Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/lxml/html/__init__.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
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1 # Copyright (c) 2004 Ian Bicking. All rights reserved.
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2 #
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3 # Redistribution and use in source and binary forms, with or without
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4 # modification, are permitted provided that the following conditions are
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5 # met:
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6 #
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7 # 1. Redistributions of source code must retain the above copyright
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8 # notice, this list of conditions and the following disclaimer.
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9 #
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10 # 2. Redistributions in binary form must reproduce the above copyright
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11 # notice, this list of conditions and the following disclaimer in
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12 # the documentation and/or other materials provided with the
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13 # distribution.
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14 #
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15 # 3. Neither the name of Ian Bicking nor the names of its contributors may
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16 # be used to endorse or promote products derived from this software
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17 # without specific prior written permission.
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18 #
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19 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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20 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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21 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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22 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL IAN BICKING OR
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23 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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24 # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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25 # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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26 # PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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27 # LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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28 # NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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29 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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30
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31 """The ``lxml.html`` tool set for HTML handling.
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32 """
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33
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34 from __future__ import absolute_import
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35
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36 __all__ = [
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37 'document_fromstring', 'fragment_fromstring', 'fragments_fromstring', 'fromstring',
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38 'tostring', 'Element', 'defs', 'open_in_browser', 'submit_form',
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39 'find_rel_links', 'find_class', 'make_links_absolute',
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40 'resolve_base_href', 'iterlinks', 'rewrite_links', 'open_in_browser', 'parse']
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41
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42
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43 import copy
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44 import sys
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45 import re
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46 from functools import partial
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47
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48 try:
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49 from collections.abc import MutableMapping, MutableSet
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50 except ImportError:
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51 from collections import MutableMapping, MutableSet
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52
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53 from .. import etree
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54 from . import defs
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55 from ._setmixin import SetMixin
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56
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57 try:
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58 from urlparse import urljoin
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59 except ImportError:
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60 # Python 3
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61 from urllib.parse import urljoin
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62
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63 try:
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64 unicode
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65 except NameError:
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66 # Python 3
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67 unicode = str
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68 try:
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69 basestring
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70 except NameError:
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71 # Python 3
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72 basestring = (str, bytes)
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73
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74
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75 def __fix_docstring(s):
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76 if not s:
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77 return s
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78 if sys.version_info[0] >= 3:
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79 sub = re.compile(r"^(\s*)u'", re.M).sub
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80 else:
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81 sub = re.compile(r"^(\s*)b'", re.M).sub
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82 return sub(r"\1'", s)
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83
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84
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85 XHTML_NAMESPACE = "http://www.w3.org/1999/xhtml"
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86
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87 _rel_links_xpath = etree.XPath("descendant-or-self::a[@rel]|descendant-or-self::x:a[@rel]",
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88 namespaces={'x':XHTML_NAMESPACE})
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89 _options_xpath = etree.XPath("descendant-or-self::option|descendant-or-self::x:option",
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90 namespaces={'x':XHTML_NAMESPACE})
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91 _forms_xpath = etree.XPath("descendant-or-self::form|descendant-or-self::x:form",
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92 namespaces={'x':XHTML_NAMESPACE})
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93 #_class_xpath = etree.XPath(r"descendant-or-self::*[regexp:match(@class, concat('\b', $class_name, '\b'))]", {'regexp': 'http://exslt.org/regular-expressions'})
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94 _class_xpath = etree.XPath("descendant-or-self::*[@class and contains(concat(' ', normalize-space(@class), ' '), concat(' ', $class_name, ' '))]")
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95 _id_xpath = etree.XPath("descendant-or-self::*[@id=$id]")
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96 _collect_string_content = etree.XPath("string()")
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97 _iter_css_urls = re.compile(r'url\(('+'["][^"]*["]|'+"['][^']*[']|"+r'[^)]*)\)', re.I).finditer
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98 _iter_css_imports = re.compile(r'@import "(.*?)"').finditer
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99 _label_xpath = etree.XPath("//label[@for=$id]|//x:label[@for=$id]",
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100 namespaces={'x':XHTML_NAMESPACE})
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101 _archive_re = re.compile(r'[^ ]+')
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102 _parse_meta_refresh_url = re.compile(
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103 r'[^;=]*;\s*(?:url\s*=\s*)?(?P<url>.*)$', re.I).search
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104
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105
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106 def _unquote_match(s, pos):
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107 if s[:1] == '"' and s[-1:] == '"' or s[:1] == "'" and s[-1:] == "'":
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108 return s[1:-1], pos+1
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109 else:
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110 return s,pos
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111
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112
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113 def _transform_result(typ, result):
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114 """Convert the result back into the input type.
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115 """
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116 if issubclass(typ, bytes):
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117 return tostring(result, encoding='utf-8')
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118 elif issubclass(typ, unicode):
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119 return tostring(result, encoding='unicode')
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120 else:
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121 return result
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122
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123
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124 def _nons(tag):
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125 if isinstance(tag, basestring):
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126 if tag[0] == '{' and tag[1:len(XHTML_NAMESPACE)+1] == XHTML_NAMESPACE:
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127 return tag.split('}')[-1]
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128 return tag
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129
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130
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131 class Classes(MutableSet):
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132 """Provides access to an element's class attribute as a set-like collection.
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133 Usage::
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134
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135 >>> el = fromstring('<p class="hidden large">Text</p>')
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136 >>> classes = el.classes # or: classes = Classes(el.attrib)
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137 >>> classes |= ['block', 'paragraph']
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138 >>> el.get('class')
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139 'hidden large block paragraph'
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140 >>> classes.toggle('hidden')
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141 False
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142 >>> el.get('class')
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143 'large block paragraph'
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144 >>> classes -= ('some', 'classes', 'block')
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145 >>> el.get('class')
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146 'large paragraph'
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147 """
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148 def __init__(self, attributes):
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149 self._attributes = attributes
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150 self._get_class_value = partial(attributes.get, 'class', '')
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151
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152 def add(self, value):
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153 """
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154 Add a class.
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155
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156 This has no effect if the class is already present.
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157 """
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158 if not value or re.search(r'\s', value):
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159 raise ValueError("Invalid class name: %r" % value)
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160 classes = self._get_class_value().split()
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161 if value in classes:
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162 return
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163 classes.append(value)
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164 self._attributes['class'] = ' '.join(classes)
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165
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166 def discard(self, value):
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167 """
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168 Remove a class if it is currently present.
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169
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170 If the class is not present, do nothing.
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171 """
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172 if not value or re.search(r'\s', value):
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173 raise ValueError("Invalid class name: %r" % value)
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174 classes = [name for name in self._get_class_value().split()
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175 if name != value]
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176 if classes:
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177 self._attributes['class'] = ' '.join(classes)
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178 elif 'class' in self._attributes:
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179 del self._attributes['class']
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180
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181 def remove(self, value):
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182 """
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183 Remove a class; it must currently be present.
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184
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185 If the class is not present, raise a KeyError.
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186 """
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187 if not value or re.search(r'\s', value):
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188 raise ValueError("Invalid class name: %r" % value)
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189 super(Classes, self).remove(value)
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190
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191 def __contains__(self, name):
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192 classes = self._get_class_value()
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193 return name in classes and name in classes.split()
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194
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195 def __iter__(self):
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196 return iter(self._get_class_value().split())
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197
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198 def __len__(self):
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199 return len(self._get_class_value().split())
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200
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201 # non-standard methods
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202
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203 def update(self, values):
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204 """
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205 Add all names from 'values'.
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206 """
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207 classes = self._get_class_value().split()
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208 extended = False
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209 for value in values:
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210 if value not in classes:
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211 classes.append(value)
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212 extended = True
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213 if extended:
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214 self._attributes['class'] = ' '.join(classes)
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215
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216 def toggle(self, value):
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217 """
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218 Add a class name if it isn't there yet, or remove it if it exists.
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219
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220 Returns true if the class was added (and is now enabled) and
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221 false if it was removed (and is now disabled).
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222 """
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223 if not value or re.search(r'\s', value):
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224 raise ValueError("Invalid class name: %r" % value)
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225 classes = self._get_class_value().split()
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226 try:
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227 classes.remove(value)
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228 enabled = False
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229 except ValueError:
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230 classes.append(value)
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231 enabled = True
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232 if classes:
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233 self._attributes['class'] = ' '.join(classes)
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234 else:
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235 del self._attributes['class']
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236 return enabled
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237
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238
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239 class HtmlMixin(object):
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240
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241 def set(self, key, value=None):
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242 """set(self, key, value=None)
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243
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244 Sets an element attribute. If no value is provided, or if the value is None,
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245 creates a 'boolean' attribute without value, e.g. "<form novalidate></form>"
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246 for ``form.set('novalidate')``.
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247 """
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248 super(HtmlElement, self).set(key, value)
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249
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250 @property
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251 def classes(self):
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252 """
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253 A set-like wrapper around the 'class' attribute.
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254 """
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255 return Classes(self.attrib)
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256
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257 @classes.setter
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258 def classes(self, classes):
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259 assert isinstance(classes, Classes) # only allow "el.classes |= ..." etc.
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260 value = classes._get_class_value()
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261 if value:
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262 self.set('class', value)
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263 elif self.get('class') is not None:
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264 del self.attrib['class']
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265
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266 @property
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267 def base_url(self):
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268 """
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269 Returns the base URL, given when the page was parsed.
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270
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271 Use with ``urlparse.urljoin(el.base_url, href)`` to get
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272 absolute URLs.
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273 """
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274 return self.getroottree().docinfo.URL
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275
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276 @property
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277 def forms(self):
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278 """
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279 Return a list of all the forms
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280 """
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281 return _forms_xpath(self)
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282
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283 @property
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284 def body(self):
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285 """
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286 Return the <body> element. Can be called from a child element
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287 to get the document's head.
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288 """
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289 return self.xpath('//body|//x:body', namespaces={'x':XHTML_NAMESPACE})[0]
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290
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291 @property
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292 def head(self):
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293 """
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294 Returns the <head> element. Can be called from a child
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295 element to get the document's head.
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296 """
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297 return self.xpath('//head|//x:head', namespaces={'x':XHTML_NAMESPACE})[0]
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298
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299 @property
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300 def label(self):
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301 """
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302 Get or set any <label> element associated with this element.
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303 """
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304 id = self.get('id')
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305 if not id:
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306 return None
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307 result = _label_xpath(self, id=id)
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308 if not result:
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309 return None
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310 else:
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311 return result[0]
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312
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313 @label.setter
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314 def label(self, label):
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315 id = self.get('id')
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316 if not id:
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317 raise TypeError(
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318 "You cannot set a label for an element (%r) that has no id"
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319 % self)
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320 if _nons(label.tag) != 'label':
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321 raise TypeError(
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322 "You can only assign label to a label element (not %r)"
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323 % label)
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324 label.set('for', id)
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325
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326 @label.deleter
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327 def label(self):
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328 label = self.label
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329 if label is not None:
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330 del label.attrib['for']
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331
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332 def drop_tree(self):
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333 """
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334 Removes this element from the tree, including its children and
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335 text. The tail text is joined to the previous element or
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336 parent.
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337 """
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338 parent = self.getparent()
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339 assert parent is not None
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340 if self.tail:
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341 previous = self.getprevious()
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342 if previous is None:
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343 parent.text = (parent.text or '') + self.tail
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344 else:
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345 previous.tail = (previous.tail or '') + self.tail
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346 parent.remove(self)
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347
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348 def drop_tag(self):
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349 """
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350 Remove the tag, but not its children or text. The children and text
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351 are merged into the parent.
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352
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353 Example::
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354
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355 >>> h = fragment_fromstring('<div>Hello <b>World!</b></div>')
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356 >>> h.find('.//b').drop_tag()
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357 >>> print(tostring(h, encoding='unicode'))
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358 <div>Hello World!</div>
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359 """
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360 parent = self.getparent()
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361 assert parent is not None
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362 previous = self.getprevious()
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363 if self.text and isinstance(self.tag, basestring):
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364 # not a Comment, etc.
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365 if previous is None:
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366 parent.text = (parent.text or '') + self.text
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367 else:
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368 previous.tail = (previous.tail or '') + self.text
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369 if self.tail:
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370 if len(self):
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371 last = self[-1]
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372 last.tail = (last.tail or '') + self.tail
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373 elif previous is None:
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374 parent.text = (parent.text or '') + self.tail
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375 else:
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376 previous.tail = (previous.tail or '') + self.tail
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377 index = parent.index(self)
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378 parent[index:index+1] = self[:]
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379
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380 def find_rel_links(self, rel):
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381 """
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382 Find any links like ``<a rel="{rel}">...</a>``; returns a list of elements.
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383 """
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384 rel = rel.lower()
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385 return [el for el in _rel_links_xpath(self)
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386 if el.get('rel').lower() == rel]
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diff changeset
387
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parents:
diff changeset
388 def find_class(self, class_name):
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diff changeset
389 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
390 Find any elements with the given class name.
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guerler
parents:
diff changeset
391 """
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diff changeset
392 return _class_xpath(self, class_name=class_name)
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diff changeset
393
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diff changeset
394 def get_element_by_id(self, id, *default):
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diff changeset
395 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
396 Get the first element in a document with the given id. If none is
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
397 found, return the default argument if provided or raise KeyError
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
398 otherwise.
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guerler
parents:
diff changeset
399
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
400 Note that there can be more than one element with the same id,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
401 and this isn't uncommon in HTML documents found in the wild.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
402 Browsers return only the first match, and this function does
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guerler
parents:
diff changeset
403 the same.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
404 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
405 try:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
406 # FIXME: should this check for multiple matches?
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guerler
parents:
diff changeset
407 # browsers just return the first one
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408 return _id_xpath(self, id=id)[0]
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diff changeset
409 except IndexError:
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parents:
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410 if default:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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411 return default[0]
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412 else:
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413 raise KeyError(id)
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414
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415 def text_content(self):
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416 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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417 Return the text content of the tag (and the text in any children).
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418 """
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419 return _collect_string_content(self)
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420
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421 def cssselect(self, expr, translator='html'):
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422 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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423 Run the CSS expression on this element and its children,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
424 returning a list of the results.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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425
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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426 Equivalent to lxml.cssselect.CSSSelect(expr, translator='html')(self)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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427 -- note that pre-compiling the expression can provide a substantial
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
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428 speedup.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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429 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
430 # Do the import here to make the dependency optional.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
431 from lxml.cssselect import CSSSelector
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
432 return CSSSelector(expr, translator=translator)(self)
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433
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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434 ########################################
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
435 ## Link functions
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
436 ########################################
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diff changeset
437
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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438 def make_links_absolute(self, base_url=None, resolve_base_href=True,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
439 handle_failures=None):
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440 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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441 Make all links in the document absolute, given the
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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442 ``base_url`` for the document (the full URL where the document
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
443 came from), or if no ``base_url`` is given, then the ``.base_url``
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
444 of the document.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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445
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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446 If ``resolve_base_href`` is true, then any ``<base href>``
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447 tags in the document are used *and* removed from the document.
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448 If it is false then any such tag is ignored.
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guerler
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449
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450 If ``handle_failures`` is None (default), a failure to process
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
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451 a URL will abort the processing. If set to 'ignore', errors
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
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452 are ignored. If set to 'discard', failing URLs will be removed.
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parents:
diff changeset
453 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
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454 if base_url is None:
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parents:
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455 base_url = self.base_url
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
456 if base_url is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
457 raise TypeError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
458 "No base_url given, and the document has no base_url")
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guerler
parents:
diff changeset
459 if resolve_base_href:
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guerler
parents:
diff changeset
460 self.resolve_base_href()
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guerler
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diff changeset
461
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
462 if handle_failures == 'ignore':
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
463 def link_repl(href):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
464 try:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
465 return urljoin(base_url, href)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
466 except ValueError:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
467 return href
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
468 elif handle_failures == 'discard':
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
469 def link_repl(href):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
470 try:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
471 return urljoin(base_url, href)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
472 except ValueError:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
473 return None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
474 elif handle_failures is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
475 def link_repl(href):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
476 return urljoin(base_url, href)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
477 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
478 raise ValueError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
479 "unexpected value for handle_failures: %r" % handle_failures)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
480
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
481 self.rewrite_links(link_repl)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
482
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
483 def resolve_base_href(self, handle_failures=None):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
484 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
485 Find any ``<base href>`` tag in the document, and apply its
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
486 values to all links found in the document. Also remove the
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
487 tag once it has been applied.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
488
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
489 If ``handle_failures`` is None (default), a failure to process
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
490 a URL will abort the processing. If set to 'ignore', errors
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
491 are ignored. If set to 'discard', failing URLs will be removed.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
492 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
493 base_href = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
494 basetags = self.xpath('//base[@href]|//x:base[@href]',
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
495 namespaces={'x': XHTML_NAMESPACE})
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
496 for b in basetags:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
497 base_href = b.get('href')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
498 b.drop_tree()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
499 if not base_href:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
500 return
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
501 self.make_links_absolute(base_href, resolve_base_href=False,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
502 handle_failures=handle_failures)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
503
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
504 def iterlinks(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
505 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
506 Yield (element, attribute, link, pos), where attribute may be None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
507 (indicating the link is in the text). ``pos`` is the position
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
508 where the link occurs; often 0, but sometimes something else in
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
509 the case of links in stylesheets or style tags.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
510
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
511 Note: <base href> is *not* taken into account in any way. The
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
512 link you get is exactly the link in the document.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
513
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
514 Note: multiple links inside of a single text string or
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
515 attribute value are returned in reversed order. This makes it
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
516 possible to replace or delete them from the text string value
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
517 based on their reported text positions. Otherwise, a
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
518 modification at one text position can change the positions of
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
519 links reported later on.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
520 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
521 link_attrs = defs.link_attrs
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
522 for el in self.iter(etree.Element):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
523 attribs = el.attrib
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
524 tag = _nons(el.tag)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
525 if tag == 'object':
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
526 codebase = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
527 ## <object> tags have attributes that are relative to
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
528 ## codebase
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
529 if 'codebase' in attribs:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
530 codebase = el.get('codebase')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
531 yield (el, 'codebase', codebase, 0)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
532 for attrib in ('classid', 'data'):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
533 if attrib in attribs:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
534 value = el.get(attrib)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
535 if codebase is not None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
536 value = urljoin(codebase, value)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
537 yield (el, attrib, value, 0)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
538 if 'archive' in attribs:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
539 for match in _archive_re.finditer(el.get('archive')):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
540 value = match.group(0)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
541 if codebase is not None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
542 value = urljoin(codebase, value)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
543 yield (el, 'archive', value, match.start())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
544 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
545 for attrib in link_attrs:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
546 if attrib in attribs:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
547 yield (el, attrib, attribs[attrib], 0)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
548 if tag == 'meta':
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
549 http_equiv = attribs.get('http-equiv', '').lower()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
550 if http_equiv == 'refresh':
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
551 content = attribs.get('content', '')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
552 match = _parse_meta_refresh_url(content)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
553 url = (match.group('url') if match else content).strip()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
554 # unexpected content means the redirect won't work, but we might
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
555 # as well be permissive and return the entire string.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
556 if url:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
557 url, pos = _unquote_match(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
558 url, match.start('url') if match else content.find(url))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
559 yield (el, 'content', url, pos)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
560 elif tag == 'param':
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
561 valuetype = el.get('valuetype') or ''
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
562 if valuetype.lower() == 'ref':
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
563 ## FIXME: while it's fine we *find* this link,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
564 ## according to the spec we aren't supposed to
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
565 ## actually change the value, including resolving
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
566 ## it. It can also still be a link, even if it
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
567 ## doesn't have a valuetype="ref" (which seems to be the norm)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
568 ## http://www.w3.org/TR/html401/struct/objects.html#adef-valuetype
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
569 yield (el, 'value', el.get('value'), 0)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
570 elif tag == 'style' and el.text:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
571 urls = [
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
572 # (start_pos, url)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
573 _unquote_match(match.group(1), match.start(1))[::-1]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
574 for match in _iter_css_urls(el.text)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
575 ] + [
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
576 (match.start(1), match.group(1))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
577 for match in _iter_css_imports(el.text)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
578 ]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
579 if urls:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
580 # sort by start pos to bring both match sets back into order
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
581 # and reverse the list to report correct positions despite
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
582 # modifications
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
583 urls.sort(reverse=True)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
584 for start, url in urls:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
585 yield (el, None, url, start)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
586 if 'style' in attribs:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
587 urls = list(_iter_css_urls(attribs['style']))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
588 if urls:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
589 # return in reversed order to simplify in-place modifications
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
590 for match in urls[::-1]:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
591 url, start = _unquote_match(match.group(1), match.start(1))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
592 yield (el, 'style', url, start)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
593
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
594 def rewrite_links(self, link_repl_func, resolve_base_href=True,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
595 base_href=None):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
596 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
597 Rewrite all the links in the document. For each link
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
598 ``link_repl_func(link)`` will be called, and the return value
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
599 will replace the old link.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
600
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
601 Note that links may not be absolute (unless you first called
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
602 ``make_links_absolute()``), and may be internal (e.g.,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
603 ``'#anchor'``). They can also be values like
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
604 ``'mailto:email'`` or ``'javascript:expr'``.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
605
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
606 If you give ``base_href`` then all links passed to
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
607 ``link_repl_func()`` will take that into account.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
608
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
609 If the ``link_repl_func`` returns None, the attribute or
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
610 tag text will be removed completely.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
611 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
612 if base_href is not None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
613 # FIXME: this can be done in one pass with a wrapper
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
614 # around link_repl_func
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
615 self.make_links_absolute(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
616 base_href, resolve_base_href=resolve_base_href)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
617 elif resolve_base_href:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
618 self.resolve_base_href()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
619
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
620 for el, attrib, link, pos in self.iterlinks():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
621 new_link = link_repl_func(link.strip())
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
622 if new_link == link:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
623 continue
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
624 if new_link is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
625 # Remove the attribute or element content
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
626 if attrib is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
627 el.text = ''
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
628 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
629 del el.attrib[attrib]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
630 continue
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
631
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
632 if attrib is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
633 new = el.text[:pos] + new_link + el.text[pos+len(link):]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
634 el.text = new
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
635 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
636 cur = el.get(attrib)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
637 if not pos and len(cur) == len(link):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
638 new = new_link # most common case
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
639 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
640 new = cur[:pos] + new_link + cur[pos+len(link):]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
641 el.set(attrib, new)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
642
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
643
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parents:
diff changeset
644 class _MethodFunc(object):
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diff changeset
645 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
646 An object that represents a method on an element as a function;
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guerler
parents:
diff changeset
647 the function takes either an element or an HTML string. It
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
648 returns whatever the function normally returns, or if the function
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
649 works in-place (and so returns None) it returns a serialized form
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diff changeset
650 of the resulting document.
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diff changeset
651 """
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diff changeset
652 def __init__(self, name, copy=False, source_class=HtmlMixin):
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diff changeset
653 self.name = name
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diff changeset
654 self.copy = copy
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diff changeset
655 self.__doc__ = getattr(source_class, self.name).__doc__
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guerler
parents:
diff changeset
656 def __call__(self, doc, *args, **kw):
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diff changeset
657 result_type = type(doc)
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parents:
diff changeset
658 if isinstance(doc, basestring):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
659 if 'copy' in kw:
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parents:
diff changeset
660 raise TypeError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
661 "The keyword 'copy' can only be used with element inputs to %s, not a string input" % self.name)
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diff changeset
662 doc = fromstring(doc, **kw)
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diff changeset
663 else:
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parents:
diff changeset
664 if 'copy' in kw:
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parents:
diff changeset
665 make_a_copy = kw.pop('copy')
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diff changeset
666 else:
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diff changeset
667 make_a_copy = self.copy
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parents:
diff changeset
668 if make_a_copy:
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parents:
diff changeset
669 doc = copy.deepcopy(doc)
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diff changeset
670 meth = getattr(doc, self.name)
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diff changeset
671 result = meth(*args, **kw)
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diff changeset
672 # FIXME: this None test is a bit sloppy
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diff changeset
673 if result is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
674 # Then return what we got in
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diff changeset
675 return _transform_result(result_type, doc)
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676 else:
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diff changeset
677 return result
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diff changeset
678
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diff changeset
679
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diff changeset
680 find_rel_links = _MethodFunc('find_rel_links', copy=False)
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diff changeset
681 find_class = _MethodFunc('find_class', copy=False)
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diff changeset
682 make_links_absolute = _MethodFunc('make_links_absolute', copy=True)
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diff changeset
683 resolve_base_href = _MethodFunc('resolve_base_href', copy=True)
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diff changeset
684 iterlinks = _MethodFunc('iterlinks', copy=False)
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diff changeset
685 rewrite_links = _MethodFunc('rewrite_links', copy=True)
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diff changeset
686
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687
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688 class HtmlComment(etree.CommentBase, HtmlMixin):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
689 pass
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diff changeset
690
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691
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diff changeset
692 class HtmlElement(etree.ElementBase, HtmlMixin):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
693 # Override etree.ElementBase.cssselect() and set(), despite the MRO (FIXME: change base order?)
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694 cssselect = HtmlMixin.cssselect
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diff changeset
695 set = HtmlMixin.set
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diff changeset
696
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diff changeset
697
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diff changeset
698 class HtmlProcessingInstruction(etree.PIBase, HtmlMixin):
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diff changeset
699 pass
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diff changeset
700
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diff changeset
701
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diff changeset
702 class HtmlEntity(etree.EntityBase, HtmlMixin):
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parents:
diff changeset
703 pass
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diff changeset
704
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diff changeset
705
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diff changeset
706 class HtmlElementClassLookup(etree.CustomElementClassLookup):
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parents:
diff changeset
707 """A lookup scheme for HTML Element classes.
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guerler
parents:
diff changeset
708
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parents:
diff changeset
709 To create a lookup instance with different Element classes, pass a tag
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parents:
diff changeset
710 name mapping of Element classes in the ``classes`` keyword argument and/or
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
711 a tag name mapping of Mixin classes in the ``mixins`` keyword argument.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
712 The special key '*' denotes a Mixin class that should be mixed into all
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diff changeset
713 Element classes.
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diff changeset
714 """
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diff changeset
715 _default_element_classes = {}
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diff changeset
716
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parents:
diff changeset
717 def __init__(self, classes=None, mixins=None):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
718 etree.CustomElementClassLookup.__init__(self)
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parents:
diff changeset
719 if classes is None:
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diff changeset
720 classes = self._default_element_classes.copy()
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parents:
diff changeset
721 if mixins:
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diff changeset
722 mixers = {}
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
723 for name, value in mixins:
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parents:
diff changeset
724 if name == '*':
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parents:
diff changeset
725 for n in classes.keys():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
726 mixers.setdefault(n, []).append(value)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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diff changeset
727 else:
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diff changeset
728 mixers.setdefault(name, []).append(value)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
729 for name, mix_bases in mixers.items():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
730 cur = classes.get(name, HtmlElement)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
731 bases = tuple(mix_bases + [cur])
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
732 classes[name] = type(cur.__name__, bases, {})
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
733 self._element_classes = classes
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diff changeset
734
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diff changeset
735 def lookup(self, node_type, document, namespace, name):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
736 if node_type == 'element':
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
737 return self._element_classes.get(name.lower(), HtmlElement)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
738 elif node_type == 'comment':
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
739 return HtmlComment
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
740 elif node_type == 'PI':
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
741 return HtmlProcessingInstruction
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
742 elif node_type == 'entity':
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
743 return HtmlEntity
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
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diff changeset
744 # Otherwise normal lookup
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guerler
parents:
diff changeset
745 return None
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guerler
parents:
diff changeset
746
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guerler
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diff changeset
747
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
748 ################################################################################
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
749 # parsing
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
750 ################################################################################
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
751
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
752 _looks_like_full_html_unicode = re.compile(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
753 unicode(r'^\s*<(?:html|!doctype)'), re.I).match
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
754 _looks_like_full_html_bytes = re.compile(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
755 r'^\s*<(?:html|!doctype)'.encode('ascii'), re.I).match
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
756
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
757
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
758 def document_fromstring(html, parser=None, ensure_head_body=False, **kw):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
759 if parser is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
760 parser = html_parser
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guerler
parents:
diff changeset
761 value = etree.fromstring(html, parser, **kw)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
762 if value is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
763 raise etree.ParserError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
764 "Document is empty")
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
765 if ensure_head_body and value.find('head') is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
766 value.insert(0, Element('head'))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
767 if ensure_head_body and value.find('body') is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
768 value.append(Element('body'))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
769 return value
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
770
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
771
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
772 def fragments_fromstring(html, no_leading_text=False, base_url=None,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
773 parser=None, **kw):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
774 """Parses several HTML elements, returning a list of elements.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
775
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
776 The first item in the list may be a string.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
777 If no_leading_text is true, then it will be an error if there is
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
778 leading text, and it will always be a list of only elements.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
779
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
780 base_url will set the document's base_url attribute
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
781 (and the tree's docinfo.URL).
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
782 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
783 if parser is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
784 parser = html_parser
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
785 # FIXME: check what happens when you give html with a body, head, etc.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
786 if isinstance(html, bytes):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
787 if not _looks_like_full_html_bytes(html):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
788 # can't use %-formatting in early Py3 versions
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
789 html = ('<html><body>'.encode('ascii') + html +
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
790 '</body></html>'.encode('ascii'))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
791 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
792 if not _looks_like_full_html_unicode(html):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
793 html = '<html><body>%s</body></html>' % html
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
794 doc = document_fromstring(html, parser=parser, base_url=base_url, **kw)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
795 assert _nons(doc.tag) == 'html'
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
796 bodies = [e for e in doc if _nons(e.tag) == 'body']
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
797 assert len(bodies) == 1, ("too many bodies: %r in %r" % (bodies, html))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
798 body = bodies[0]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
799 elements = []
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
800 if no_leading_text and body.text and body.text.strip():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
801 raise etree.ParserError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
802 "There is leading text: %r" % body.text)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
803 if body.text and body.text.strip():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
804 elements.append(body.text)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
805 elements.extend(body)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
806 # FIXME: removing the reference to the parent artificial document
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
807 # would be nice
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
808 return elements
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
809
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
810
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
811 def fragment_fromstring(html, create_parent=False, base_url=None,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
812 parser=None, **kw):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
813 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
814 Parses a single HTML element; it is an error if there is more than
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
815 one element, or if anything but whitespace precedes or follows the
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
816 element.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
817
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
818 If ``create_parent`` is true (or is a tag name) then a parent node
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
819 will be created to encapsulate the HTML in a single element. In this
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
820 case, leading or trailing text is also allowed, as are multiple elements
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
821 as result of the parsing.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
822
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
823 Passing a ``base_url`` will set the document's ``base_url`` attribute
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
824 (and the tree's docinfo.URL).
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
825 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
826 if parser is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
827 parser = html_parser
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
828
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
829 accept_leading_text = bool(create_parent)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
830
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
831 elements = fragments_fromstring(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
832 html, parser=parser, no_leading_text=not accept_leading_text,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
833 base_url=base_url, **kw)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
834
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
835 if create_parent:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
836 if not isinstance(create_parent, basestring):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
837 create_parent = 'div'
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
838 new_root = Element(create_parent)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
839 if elements:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
840 if isinstance(elements[0], basestring):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
841 new_root.text = elements[0]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
842 del elements[0]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
843 new_root.extend(elements)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
844 return new_root
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
845
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
846 if not elements:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
847 raise etree.ParserError('No elements found')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
848 if len(elements) > 1:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
849 raise etree.ParserError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
850 "Multiple elements found (%s)"
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
851 % ', '.join([_element_name(e) for e in elements]))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
852 el = elements[0]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
853 if el.tail and el.tail.strip():
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
854 raise etree.ParserError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
855 "Element followed by text: %r" % el.tail)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
856 el.tail = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
857 return el
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
858
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
859
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
860 def fromstring(html, base_url=None, parser=None, **kw):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
861 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
862 Parse the html, returning a single element/document.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
863
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
864 This tries to minimally parse the chunk of text, without knowing if it
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
865 is a fragment or a document.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
866
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
867 base_url will set the document's base_url attribute (and the tree's docinfo.URL)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
868 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
869 if parser is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
870 parser = html_parser
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
871 if isinstance(html, bytes):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
872 is_full_html = _looks_like_full_html_bytes(html)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
873 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
874 is_full_html = _looks_like_full_html_unicode(html)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
875 doc = document_fromstring(html, parser=parser, base_url=base_url, **kw)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
876 if is_full_html:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
877 return doc
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
878 # otherwise, lets parse it out...
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
879 bodies = doc.findall('body')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
880 if not bodies:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
881 bodies = doc.findall('{%s}body' % XHTML_NAMESPACE)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
882 if bodies:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
883 body = bodies[0]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
884 if len(bodies) > 1:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
885 # Somehow there are multiple bodies, which is bad, but just
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
886 # smash them into one body
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
887 for other_body in bodies[1:]:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
888 if other_body.text:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
889 if len(body):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
890 body[-1].tail = (body[-1].tail or '') + other_body.text
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
891 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
892 body.text = (body.text or '') + other_body.text
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
893 body.extend(other_body)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
894 # We'll ignore tail
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
895 # I guess we are ignoring attributes too
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
896 other_body.drop_tree()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
897 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
898 body = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
899 heads = doc.findall('head')
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parents:
diff changeset
900 if not heads:
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parents:
diff changeset
901 heads = doc.findall('{%s}head' % XHTML_NAMESPACE)
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guerler
parents:
diff changeset
902 if heads:
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parents:
diff changeset
903 # Well, we have some sort of structure, so lets keep it all
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guerler
parents:
diff changeset
904 head = heads[0]
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parents:
diff changeset
905 if len(heads) > 1:
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parents:
diff changeset
906 for other_head in heads[1:]:
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parents:
diff changeset
907 head.extend(other_head)
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parents:
diff changeset
908 # We don't care about text or tail in a head
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parents:
diff changeset
909 other_head.drop_tree()
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parents:
diff changeset
910 return doc
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parents:
diff changeset
911 if body is None:
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parents:
diff changeset
912 return doc
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parents:
diff changeset
913 if (len(body) == 1 and (not body.text or not body.text.strip())
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guerler
parents:
diff changeset
914 and (not body[-1].tail or not body[-1].tail.strip())):
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guerler
parents:
diff changeset
915 # The body has just one element, so it was probably a single
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guerler
parents:
diff changeset
916 # element passed in
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parents:
diff changeset
917 return body[0]
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parents:
diff changeset
918 # Now we have a body which represents a bunch of tags which have the
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guerler
parents:
diff changeset
919 # content that was passed in. We will create a fake container, which
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
920 # is the body tag, except <body> implies too much structure.
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guerler
parents:
diff changeset
921 if _contains_block_level_tag(body):
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guerler
parents:
diff changeset
922 body.tag = 'div'
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parents:
diff changeset
923 else:
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parents:
diff changeset
924 body.tag = 'span'
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parents:
diff changeset
925 return body
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parents:
diff changeset
926
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diff changeset
927
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diff changeset
928 def parse(filename_or_url, parser=None, base_url=None, **kw):
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diff changeset
929 """
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diff changeset
930 Parse a filename, URL, or file-like object into an HTML document
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parents:
diff changeset
931 tree. Note: this returns a tree, not an element. Use
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parents:
diff changeset
932 ``parse(...).getroot()`` to get the document root.
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parents:
diff changeset
933
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parents:
diff changeset
934 You can override the base URL with the ``base_url`` keyword. This
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guerler
parents:
diff changeset
935 is most useful when parsing from a file-like object.
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guerler
parents:
diff changeset
936 """
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guerler
parents:
diff changeset
937 if parser is None:
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guerler
parents:
diff changeset
938 parser = html_parser
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parents:
diff changeset
939 return etree.parse(filename_or_url, parser, base_url=base_url, **kw)
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parents:
diff changeset
940
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diff changeset
941
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diff changeset
942 def _contains_block_level_tag(el):
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parents:
diff changeset
943 # FIXME: I could do this with XPath, but would that just be
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
944 # unnecessarily slow?
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parents:
diff changeset
945 for el in el.iter(etree.Element):
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guerler
parents:
diff changeset
946 if _nons(el.tag) in defs.block_tags:
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parents:
diff changeset
947 return True
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parents:
diff changeset
948 return False
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parents:
diff changeset
949
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parents:
diff changeset
950
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parents:
diff changeset
951 def _element_name(el):
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parents:
diff changeset
952 if isinstance(el, etree.CommentBase):
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parents:
diff changeset
953 return 'comment'
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954 elif isinstance(el, basestring):
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diff changeset
955 return 'string'
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diff changeset
956 else:
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parents:
diff changeset
957 return _nons(el.tag)
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parents:
diff changeset
958
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diff changeset
959
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diff changeset
960 ################################################################################
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guerler
parents:
diff changeset
961 # form handling
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parents:
diff changeset
962 ################################################################################
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diff changeset
963
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parents:
diff changeset
964 class FormElement(HtmlElement):
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parents:
diff changeset
965 """
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parents:
diff changeset
966 Represents a <form> element.
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diff changeset
967 """
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diff changeset
968
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diff changeset
969 @property
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parents:
diff changeset
970 def inputs(self):
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parents:
diff changeset
971 """
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diff changeset
972 Returns an accessor for all the input elements in the form.
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parents:
diff changeset
973
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parents:
diff changeset
974 See `InputGetter` for more information about the object.
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diff changeset
975 """
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parents:
diff changeset
976 return InputGetter(self)
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parents:
diff changeset
977
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diff changeset
978 @property
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diff changeset
979 def fields(self):
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parents:
diff changeset
980 """
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parents:
diff changeset
981 Dictionary-like object that represents all the fields in this
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parents:
diff changeset
982 form. You can set values in this dictionary to effect the
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diff changeset
983 form.
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diff changeset
984 """
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diff changeset
985 return FieldsDict(self.inputs)
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diff changeset
986
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diff changeset
987 @fields.setter
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diff changeset
988 def fields(self, value):
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diff changeset
989 fields = self.fields
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diff changeset
990 prev_keys = fields.keys()
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991 for key, value in value.items():
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diff changeset
992 if key in prev_keys:
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diff changeset
993 prev_keys.remove(key)
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diff changeset
994 fields[key] = value
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diff changeset
995 for key in prev_keys:
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diff changeset
996 if key is None:
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diff changeset
997 # Case of an unnamed input; these aren't really
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parents:
diff changeset
998 # expressed in form_values() anyway.
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diff changeset
999 continue
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diff changeset
1000 fields[key] = None
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diff changeset
1001
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diff changeset
1002 def _name(self):
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parents:
diff changeset
1003 if self.get('name'):
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parents:
diff changeset
1004 return self.get('name')
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parents:
diff changeset
1005 elif self.get('id'):
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parents:
diff changeset
1006 return '#' + self.get('id')
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guerler
parents:
diff changeset
1007 iter_tags = self.body.iter
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guerler
parents:
diff changeset
1008 forms = list(iter_tags('form'))
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parents:
diff changeset
1009 if not forms:
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parents:
diff changeset
1010 forms = list(iter_tags('{%s}form' % XHTML_NAMESPACE))
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parents:
diff changeset
1011 return str(forms.index(self))
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diff changeset
1012
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1013 def form_values(self):
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diff changeset
1014 """
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diff changeset
1015 Return a list of tuples of the field values for the form.
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parents:
diff changeset
1016 This is suitable to be passed to ``urllib.urlencode()``.
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diff changeset
1017 """
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diff changeset
1018 results = []
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diff changeset
1019 for el in self.inputs:
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parents:
diff changeset
1020 name = el.name
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diff changeset
1021 if not name or 'disabled' in el.attrib:
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diff changeset
1022 continue
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diff changeset
1023 tag = _nons(el.tag)
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diff changeset
1024 if tag == 'textarea':
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diff changeset
1025 results.append((name, el.value))
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1026 elif tag == 'select':
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parents:
diff changeset
1027 value = el.value
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1028 if el.multiple:
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diff changeset
1029 for v in value:
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parents:
diff changeset
1030 results.append((name, v))
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parents:
diff changeset
1031 elif value is not None:
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parents:
diff changeset
1032 results.append((name, el.value))
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parents:
diff changeset
1033 else:
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parents:
diff changeset
1034 assert tag == 'input', (
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parents:
diff changeset
1035 "Unexpected tag: %r" % el)
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parents:
diff changeset
1036 if el.checkable and not el.checked:
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parents:
diff changeset
1037 continue
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parents:
diff changeset
1038 if el.type in ('submit', 'image', 'reset', 'file'):
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parents:
diff changeset
1039 continue
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parents:
diff changeset
1040 value = el.value
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parents:
diff changeset
1041 if value is not None:
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diff changeset
1042 results.append((name, el.value))
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parents:
diff changeset
1043 return results
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parents:
diff changeset
1044
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parents:
diff changeset
1045 @property
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parents:
diff changeset
1046 def action(self):
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parents:
diff changeset
1047 """
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parents:
diff changeset
1048 Get/set the form's ``action`` attribute.
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parents:
diff changeset
1049 """
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diff changeset
1050 base_url = self.base_url
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parents:
diff changeset
1051 action = self.get('action')
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parents:
diff changeset
1052 if base_url and action is not None:
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parents:
diff changeset
1053 return urljoin(base_url, action)
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parents:
diff changeset
1054 else:
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parents:
diff changeset
1055 return action
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diff changeset
1056
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diff changeset
1057 @action.setter
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diff changeset
1058 def action(self, value):
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parents:
diff changeset
1059 self.set('action', value)
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parents:
diff changeset
1060
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parents:
diff changeset
1061 @action.deleter
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parents:
diff changeset
1062 def action(self):
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parents:
diff changeset
1063 attrib = self.attrib
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parents:
diff changeset
1064 if 'action' in attrib:
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parents:
diff changeset
1065 del attrib['action']
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parents:
diff changeset
1066
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parents:
diff changeset
1067 @property
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parents:
diff changeset
1068 def method(self):
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parents:
diff changeset
1069 """
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parents:
diff changeset
1070 Get/set the form's method. Always returns a capitalized
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parents:
diff changeset
1071 string, and defaults to ``'GET'``
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diff changeset
1072 """
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parents:
diff changeset
1073 return self.get('method', 'GET').upper()
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parents:
diff changeset
1074
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parents:
diff changeset
1075 @method.setter
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parents:
diff changeset
1076 def method(self, value):
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parents:
diff changeset
1077 self.set('method', value.upper())
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parents:
diff changeset
1078
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parents:
diff changeset
1079
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diff changeset
1080 HtmlElementClassLookup._default_element_classes['form'] = FormElement
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parents:
diff changeset
1081
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diff changeset
1082
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diff changeset
1083 def submit_form(form, extra_values=None, open_http=None):
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parents:
diff changeset
1084 """
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diff changeset
1085 Helper function to submit a form. Returns a file-like object, as from
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parents:
diff changeset
1086 ``urllib.urlopen()``. This object also has a ``.geturl()`` function,
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diff changeset
1087 which shows the URL if there were any redirects.
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diff changeset
1088
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1089 You can use this like::
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diff changeset
1090
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diff changeset
1091 form = doc.forms[0]
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diff changeset
1092 form.inputs['foo'].value = 'bar' # etc
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diff changeset
1093 response = form.submit()
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diff changeset
1094 doc = parse(response)
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diff changeset
1095 doc.make_links_absolute(response.geturl())
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diff changeset
1096
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diff changeset
1097 To change the HTTP requester, pass a function as ``open_http`` keyword
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diff changeset
1098 argument that opens the URL for you. The function must have the following
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diff changeset
1099 signature::
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1100
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diff changeset
1101 open_http(method, URL, values)
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diff changeset
1102
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1103 The action is one of 'GET' or 'POST', the URL is the target URL as a
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diff changeset
1104 string, and the values are a sequence of ``(name, value)`` tuples with the
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diff changeset
1105 form data.
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1106 """
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1107 values = form.form_values()
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diff changeset
1108 if extra_values:
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diff changeset
1109 if hasattr(extra_values, 'items'):
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diff changeset
1110 extra_values = extra_values.items()
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diff changeset
1111 values.extend(extra_values)
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diff changeset
1112 if open_http is None:
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diff changeset
1113 open_http = open_http_urllib
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diff changeset
1114 if form.action:
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diff changeset
1115 url = form.action
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diff changeset
1116 else:
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diff changeset
1117 url = form.base_url
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diff changeset
1118 return open_http(form.method, url, values)
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parents:
diff changeset
1119
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diff changeset
1120
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1121 def open_http_urllib(method, url, values):
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diff changeset
1122 if not url:
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diff changeset
1123 raise ValueError("cannot submit, no URL provided")
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diff changeset
1124 ## FIXME: should test that it's not a relative URL or something
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parents:
diff changeset
1125 try:
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diff changeset
1126 from urllib import urlencode, urlopen
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diff changeset
1127 except ImportError: # Python 3
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parents:
diff changeset
1128 from urllib.request import urlopen
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parents:
diff changeset
1129 from urllib.parse import urlencode
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parents:
diff changeset
1130 if method == 'GET':
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diff changeset
1131 if '?' in url:
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diff changeset
1132 url += '&'
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1133 else:
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diff changeset
1134 url += '?'
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diff changeset
1135 url += urlencode(values)
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diff changeset
1136 data = None
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diff changeset
1137 else:
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diff changeset
1138 data = urlencode(values)
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parents:
diff changeset
1139 if not isinstance(data, bytes):
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diff changeset
1140 data = data.encode('ASCII')
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parents:
diff changeset
1141 return urlopen(url, data)
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diff changeset
1142
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diff changeset
1143
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1144 class FieldsDict(MutableMapping):
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1145
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1146 def __init__(self, inputs):
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1147 self.inputs = inputs
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1148 def __getitem__(self, item):
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1149 return self.inputs[item].value
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diff changeset
1150 def __setitem__(self, item, value):
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1151 self.inputs[item].value = value
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1152 def __delitem__(self, item):
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parents:
diff changeset
1153 raise KeyError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1154 "You cannot remove keys from ElementDict")
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parents:
diff changeset
1155 def keys(self):
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1156 return self.inputs.keys()
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diff changeset
1157 def __contains__(self, item):
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diff changeset
1158 return item in self.inputs
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diff changeset
1159 def __iter__(self):
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1160 return iter(self.inputs.keys())
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diff changeset
1161 def __len__(self):
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diff changeset
1162 return len(self.inputs)
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diff changeset
1163
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parents:
diff changeset
1164 def __repr__(self):
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parents:
diff changeset
1165 return '<%s for form %s>' % (
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parents:
diff changeset
1166 self.__class__.__name__,
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parents:
diff changeset
1167 self.inputs.form._name())
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parents:
diff changeset
1168
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diff changeset
1169
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parents:
diff changeset
1170 class InputGetter(object):
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parents:
diff changeset
1171
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diff changeset
1172 """
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parents:
diff changeset
1173 An accessor that represents all the input fields in a form.
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parents:
diff changeset
1174
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parents:
diff changeset
1175 You can get fields by name from this, with
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1176 ``form.inputs['field_name']``. If there are a set of checkboxes
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parents:
diff changeset
1177 with the same name, they are returned as a list (a `CheckboxGroup`
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parents:
diff changeset
1178 which also allows value setting). Radio inputs are handled
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parents:
diff changeset
1179 similarly.
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diff changeset
1180
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parents:
diff changeset
1181 You can also iterate over this to get all input elements. This
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1182 won't return the same thing as if you get all the names, as
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1183 checkboxes and radio elements are returned individually.
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diff changeset
1184 """
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diff changeset
1185
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diff changeset
1186 _name_xpath = etree.XPath(".//*[@name = $name and (local-name(.) = 'select' or local-name(.) = 'input' or local-name(.) = 'textarea')]")
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parents:
diff changeset
1187 _all_xpath = etree.XPath(".//*[local-name() = 'select' or local-name() = 'input' or local-name() = 'textarea']")
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parents:
diff changeset
1188
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1189 def __init__(self, form):
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parents:
diff changeset
1190 self.form = form
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diff changeset
1191
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1192 def __repr__(self):
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parents:
diff changeset
1193 return '<%s for form %s>' % (
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parents:
diff changeset
1194 self.__class__.__name__,
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parents:
diff changeset
1195 self.form._name())
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diff changeset
1196
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diff changeset
1197 ## FIXME: there should be more methods, and it's unclear if this is
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parents:
diff changeset
1198 ## a dictionary-like object or list-like object
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parents:
diff changeset
1199
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parents:
diff changeset
1200 def __getitem__(self, name):
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parents:
diff changeset
1201 results = self._name_xpath(self.form, name=name)
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parents:
diff changeset
1202 if results:
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parents:
diff changeset
1203 type = results[0].get('type')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1204 if type == 'radio' and len(results) > 1:
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parents:
diff changeset
1205 group = RadioGroup(results)
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parents:
diff changeset
1206 group.name = name
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parents:
diff changeset
1207 return group
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parents:
diff changeset
1208 elif type == 'checkbox' and len(results) > 1:
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parents:
diff changeset
1209 group = CheckboxGroup(results)
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parents:
diff changeset
1210 group.name = name
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parents:
diff changeset
1211 return group
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diff changeset
1212 else:
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parents:
diff changeset
1213 # I don't like throwing away elements like this
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parents:
diff changeset
1214 return results[0]
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diff changeset
1215 else:
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parents:
diff changeset
1216 raise KeyError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1217 "No input element with the name %r" % name)
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parents:
diff changeset
1218
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parents:
diff changeset
1219 def __contains__(self, name):
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parents:
diff changeset
1220 results = self._name_xpath(self.form, name=name)
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parents:
diff changeset
1221 return bool(results)
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diff changeset
1222
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diff changeset
1223 def keys(self):
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parents:
diff changeset
1224 names = set()
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parents:
diff changeset
1225 for el in self:
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parents:
diff changeset
1226 names.add(el.name)
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parents:
diff changeset
1227 if None in names:
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parents:
diff changeset
1228 names.remove(None)
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parents:
diff changeset
1229 return list(names)
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parents:
diff changeset
1230
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parents:
diff changeset
1231 def __iter__(self):
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guerler
parents:
diff changeset
1232 ## FIXME: kind of dumb to turn a list into an iterator, only
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1233 ## to have it likely turned back into a list again :(
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parents:
diff changeset
1234 return iter(self._all_xpath(self.form))
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guerler
parents:
diff changeset
1235
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diff changeset
1236
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parents:
diff changeset
1237 class InputMixin(object):
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parents:
diff changeset
1238 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1239 Mix-in for all input elements (input, select, and textarea)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1240 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1241 @property
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parents:
diff changeset
1242 def name(self):
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parents:
diff changeset
1243 """
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parents:
diff changeset
1244 Get/set the name of the element
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parents:
diff changeset
1245 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1246 return self.get('name')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1247
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1248 @name.setter
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parents:
diff changeset
1249 def name(self, value):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1250 self.set('name', value)
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guerler
parents:
diff changeset
1251
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1252 @name.deleter
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parents:
diff changeset
1253 def name(self):
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guerler
parents:
diff changeset
1254 attrib = self.attrib
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guerler
parents:
diff changeset
1255 if 'name' in attrib:
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guerler
parents:
diff changeset
1256 del attrib['name']
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parents:
diff changeset
1257
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parents:
diff changeset
1258 def __repr__(self):
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guerler
parents:
diff changeset
1259 type_name = getattr(self, 'type', None)
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guerler
parents:
diff changeset
1260 if type_name:
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guerler
parents:
diff changeset
1261 type_name = ' type=%r' % type_name
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parents:
diff changeset
1262 else:
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parents:
diff changeset
1263 type_name = ''
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parents:
diff changeset
1264 return '<%s %x name=%r%s>' % (
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1265 self.__class__.__name__, id(self), self.name, type_name)
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guerler
parents:
diff changeset
1266
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parents:
diff changeset
1267
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parents:
diff changeset
1268 class TextareaElement(InputMixin, HtmlElement):
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parents:
diff changeset
1269 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1270 ``<textarea>`` element. You can get the name with ``.name`` and
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1271 get/set the value with ``.value``
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parents:
diff changeset
1272 """
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guerler
parents:
diff changeset
1273 @property
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parents:
diff changeset
1274 def value(self):
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parents:
diff changeset
1275 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1276 Get/set the value (which is the contents of this element)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1277 """
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guerler
parents:
diff changeset
1278 content = self.text or ''
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
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parents:
diff changeset
1279 if self.tag.startswith("{%s}" % XHTML_NAMESPACE):
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guerler
parents:
diff changeset
1280 serialisation_method = 'xml'
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parents:
diff changeset
1281 else:
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parents:
diff changeset
1282 serialisation_method = 'html'
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parents:
diff changeset
1283 for el in self:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1284 # it's rare that we actually get here, so let's not use ''.join()
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guerler
parents:
diff changeset
1285 content += etree.tostring(
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guerler
parents:
diff changeset
1286 el, method=serialisation_method, encoding='unicode')
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guerler
parents:
diff changeset
1287 return content
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guerler
parents:
diff changeset
1288
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guerler
parents:
diff changeset
1289 @value.setter
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1290 def value(self, value):
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1291 del self[:]
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1292 self.text = value
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1293
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diff changeset
1294 @value.deleter
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diff changeset
1295 def value(self):
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diff changeset
1296 self.text = ''
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parents:
diff changeset
1297 del self[:]
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diff changeset
1298
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diff changeset
1299
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diff changeset
1300 HtmlElementClassLookup._default_element_classes['textarea'] = TextareaElement
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1301
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1302
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1303 class SelectElement(InputMixin, HtmlElement):
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diff changeset
1304 """
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diff changeset
1305 ``<select>`` element. You can get the name with ``.name``.
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1306
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1307 ``.value`` will be the value of the selected option, unless this
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1308 is a multi-select element (``<select multiple>``), in which case
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diff changeset
1309 it will be a set-like object. In either case ``.value_options``
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1310 gives the possible values.
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1311
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1312 The boolean attribute ``.multiple`` shows if this is a
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1313 multi-select.
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1314 """
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1315 @property
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1316 def value(self):
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1317 """
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1318 Get/set the value of this select (the selected option).
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1319
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1320 If this is a multi-select, this is a set-like object that
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1321 represents all the selected options.
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1322 """
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1323 if self.multiple:
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1324 return MultipleSelectOptions(self)
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1325 options = _options_xpath(self)
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1326
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1327 try:
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1328 selected_option = next(el for el in reversed(options) if el.get('selected') is not None)
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1329 except StopIteration:
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1330 try:
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1331 selected_option = next(el for el in options if el.get('disabled') is None)
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1332 except StopIteration:
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1333 return None
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1334 value = selected_option.get('value')
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1335 if value is None:
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1336 value = (selected_option.text or '').strip()
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1337 return value
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1338
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1339 @value.setter
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1340 def value(self, value):
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1341 if self.multiple:
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1342 if isinstance(value, basestring):
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1343 raise TypeError("You must pass in a sequence")
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1344 values = self.value
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1345 values.clear()
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1346 values.update(value)
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1347 return
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1348 checked_option = None
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1349 if value is not None:
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1350 for el in _options_xpath(self):
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1351 opt_value = el.get('value')
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1352 if opt_value is None:
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1353 opt_value = (el.text or '').strip()
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1354 if opt_value == value:
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1355 checked_option = el
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1356 break
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1357 else:
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1358 raise ValueError(
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1359 "There is no option with the value of %r" % value)
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1360 for el in _options_xpath(self):
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1361 if 'selected' in el.attrib:
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1362 del el.attrib['selected']
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1363 if checked_option is not None:
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1364 checked_option.set('selected', '')
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1365
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1366 @value.deleter
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1367 def value(self):
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1368 # FIXME: should del be allowed at all?
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1369 if self.multiple:
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1370 self.value.clear()
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1371 else:
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1372 self.value = None
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1373
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1374 @property
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1375 def value_options(self):
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1376 """
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1377 All the possible values this select can have (the ``value``
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1378 attribute of all the ``<option>`` elements.
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1379 """
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1380 options = []
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1381 for el in _options_xpath(self):
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1382 value = el.get('value')
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1383 if value is None:
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1384 value = (el.text or '').strip()
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1385 options.append(value)
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1386 return options
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1387
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1388 @property
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1389 def multiple(self):
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1390 """
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1391 Boolean attribute: is there a ``multiple`` attribute on this element.
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1392 """
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1393 return 'multiple' in self.attrib
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1394
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1395 @multiple.setter
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1396 def multiple(self, value):
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1397 if value:
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1398 self.set('multiple', '')
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1399 elif 'multiple' in self.attrib:
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1400 del self.attrib['multiple']
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1401
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1402
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1403 HtmlElementClassLookup._default_element_classes['select'] = SelectElement
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1404
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1405
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1406 class MultipleSelectOptions(SetMixin):
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1407 """
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1408 Represents all the selected options in a ``<select multiple>`` element.
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diff changeset
1409
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1410 You can add to this set-like option to select an option, or remove
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diff changeset
1411 to unselect the option.
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1412 """
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1413
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1414 def __init__(self, select):
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1415 self.select = select
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diff changeset
1416
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1417 @property
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1418 def options(self):
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diff changeset
1419 """
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diff changeset
1420 Iterator of all the ``<option>`` elements.
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guerler
parents:
diff changeset
1421 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1422 return iter(_options_xpath(self.select))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1423
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1424 def __iter__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1425 for option in self.options:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1426 if 'selected' in option.attrib:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1427 opt_value = option.get('value')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1428 if opt_value is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1429 opt_value = (option.text or '').strip()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1430 yield opt_value
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1431
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1432 def add(self, item):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1433 for option in self.options:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1434 opt_value = option.get('value')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1435 if opt_value is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1436 opt_value = (option.text or '').strip()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1437 if opt_value == item:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1438 option.set('selected', '')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1439 break
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1440 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1441 raise ValueError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1442 "There is no option with the value %r" % item)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1443
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1444 def remove(self, item):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1445 for option in self.options:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1446 opt_value = option.get('value')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1447 if opt_value is None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1448 opt_value = (option.text or '').strip()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1449 if opt_value == item:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1450 if 'selected' in option.attrib:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1451 del option.attrib['selected']
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1452 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1453 raise ValueError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1454 "The option %r is not currently selected" % item)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1455 break
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1456 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1457 raise ValueError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1458 "There is not option with the value %r" % item)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1459
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1460 def __repr__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1461 return '<%s {%s} for select name=%r>' % (
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1462 self.__class__.__name__,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1463 ', '.join([repr(v) for v in self]),
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1464 self.select.name)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1465
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1466
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1467 class RadioGroup(list):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1468 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1469 This object represents several ``<input type=radio>`` elements
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1470 that have the same name.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1471
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1472 You can use this like a list, but also use the property
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1473 ``.value`` to check/uncheck inputs. Also you can use
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1474 ``.value_options`` to get the possible values.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1475 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1476 @property
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1477 def value(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1478 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1479 Get/set the value, which checks the radio with that value (and
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1480 unchecks any other value).
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1481 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1482 for el in self:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1483 if 'checked' in el.attrib:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1484 return el.get('value')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1485 return None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1486
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1487 @value.setter
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1488 def value(self, value):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1489 checked_option = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1490 if value is not None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1491 for el in self:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1492 if el.get('value') == value:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1493 checked_option = el
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1494 break
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1495 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1496 raise ValueError("There is no radio input with the value %r" % value)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1497 for el in self:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1498 if 'checked' in el.attrib:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1499 del el.attrib['checked']
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1500 if checked_option is not None:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1501 checked_option.set('checked', '')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1502
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1503 @value.deleter
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1504 def value(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1505 self.value = None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1506
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1507 @property
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1508 def value_options(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1509 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1510 Returns a list of all the possible values.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1511 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1512 return [el.get('value') for el in self]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1513
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1514 def __repr__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1515 return '%s(%s)' % (
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1516 self.__class__.__name__,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1517 list.__repr__(self))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1518
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1519
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1520 class CheckboxGroup(list):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1521 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1522 Represents a group of checkboxes (``<input type=checkbox>``) that
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1523 have the same name.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1524
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1525 In addition to using this like a list, the ``.value`` attribute
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1526 returns a set-like object that you can add to or remove from to
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1527 check and uncheck checkboxes. You can also use ``.value_options``
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1528 to get the possible values.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1529 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1530 @property
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1531 def value(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1532 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1533 Return a set-like object that can be modified to check or
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1534 uncheck individual checkboxes according to their value.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1535 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1536 return CheckboxValues(self)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1537
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1538 @value.setter
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1539 def value(self, value):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1540 values = self.value
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1541 values.clear()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1542 if not hasattr(value, '__iter__'):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1543 raise ValueError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1544 "A CheckboxGroup (name=%r) must be set to a sequence (not %r)"
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1545 % (self[0].name, value))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1546 values.update(value)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1547
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1548 @value.deleter
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1549 def value(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1550 self.value.clear()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1551
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1552 @property
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1553 def value_options(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1554 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1555 Returns a list of all the possible values.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1556 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1557 return [el.get('value') for el in self]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1558
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1559 def __repr__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1560 return '%s(%s)' % (
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1561 self.__class__.__name__, list.__repr__(self))
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1562
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1563
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1564 class CheckboxValues(SetMixin):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1565 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1566 Represents the values of the checked checkboxes in a group of
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1567 checkboxes with the same name.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1568 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1569
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1570 def __init__(self, group):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1571 self.group = group
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1572
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1573 def __iter__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1574 return iter([
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1575 el.get('value')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1576 for el in self.group
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1577 if 'checked' in el.attrib])
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1578
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1579 def add(self, value):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1580 for el in self.group:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1581 if el.get('value') == value:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1582 el.set('checked', '')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1583 break
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1584 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1585 raise KeyError("No checkbox with value %r" % value)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1586
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guerler
parents:
diff changeset
1587 def remove(self, value):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1588 for el in self.group:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1589 if el.get('value') == value:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1590 if 'checked' in el.attrib:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1591 del el.attrib['checked']
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1592 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1593 raise KeyError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1594 "The checkbox with value %r was already unchecked" % value)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1595 break
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guerler
parents:
diff changeset
1596 else:
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guerler
parents:
diff changeset
1597 raise KeyError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1598 "No checkbox with value %r" % value)
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guerler
parents:
diff changeset
1599
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1600 def __repr__(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1601 return '<%s {%s} for checkboxes name=%r>' % (
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1602 self.__class__.__name__,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1603 ', '.join([repr(v) for v in self]),
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1604 self.group.name)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1605
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guerler
parents:
diff changeset
1606
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1607 class InputElement(InputMixin, HtmlElement):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1608 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1609 Represents an ``<input>`` element.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1610
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1611 You can get the type with ``.type`` (which is lower-cased and
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1612 defaults to ``'text'``).
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1613
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1614 Also you can get and set the value with ``.value``
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1615
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1616 Checkboxes and radios have the attribute ``input.checkable ==
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1617 True`` (for all others it is false) and a boolean attribute
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1618 ``.checked``.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1619
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1620 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1621
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1622 ## FIXME: I'm a little uncomfortable with the use of .checked
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1623 @property
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1624 def value(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1625 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1626 Get/set the value of this element, using the ``value`` attribute.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1627
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1628 Also, if this is a checkbox and it has no value, this defaults
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1629 to ``'on'``. If it is a checkbox or radio that is not
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1630 checked, this returns None.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1631 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1632 if self.checkable:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1633 if self.checked:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1634 return self.get('value') or 'on'
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1635 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1636 return None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1637 return self.get('value')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1638
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1639 @value.setter
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1640 def value(self, value):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1641 if self.checkable:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1642 if not value:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1643 self.checked = False
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1644 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1645 self.checked = True
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1646 if isinstance(value, basestring):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1647 self.set('value', value)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1648 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1649 self.set('value', value)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1650
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1651 @value.deleter
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1652 def value(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1653 if self.checkable:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1654 self.checked = False
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1655 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1656 if 'value' in self.attrib:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1657 del self.attrib['value']
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1658
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1659 @property
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1660 def type(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1661 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1662 Return the type of this element (using the type attribute).
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1663 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1664 return self.get('type', 'text').lower()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1665
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1666 @type.setter
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1667 def type(self, value):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1668 self.set('type', value)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1669
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1670 @property
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1671 def checkable(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1672 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1673 Boolean: can this element be checked?
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1674 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1675 return self.type in ('checkbox', 'radio')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1676
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1677 @property
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1678 def checked(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1679 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1680 Boolean attribute to get/set the presence of the ``checked``
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1681 attribute.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1682
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1683 You can only use this on checkable input types.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1684 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1685 if not self.checkable:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1686 raise AttributeError('Not a checkable input type')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1687 return 'checked' in self.attrib
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1688
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1689 @checked.setter
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1690 def checked(self, value):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1691 if not self.checkable:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1692 raise AttributeError('Not a checkable input type')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1693 if value:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1694 self.set('checked', '')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1695 else:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1696 attrib = self.attrib
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1697 if 'checked' in attrib:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1698 del attrib['checked']
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1699
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1700
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1701 HtmlElementClassLookup._default_element_classes['input'] = InputElement
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1702
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1703
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1704 class LabelElement(HtmlElement):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1705 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1706 Represents a ``<label>`` element.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1707
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1708 Label elements are linked to other elements with their ``for``
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1709 attribute. You can access this element with ``label.for_element``.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1710 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1711 @property
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1712 def for_element(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1713 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1714 Get/set the element this label points to. Return None if it
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1715 can't be found.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1716 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1717 id = self.get('for')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1718 if not id:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1719 return None
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1720 return self.body.get_element_by_id(id)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1721
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1722 @for_element.setter
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1723 def for_element(self, other):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1724 id = other.get('id')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1725 if not id:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1726 raise TypeError(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1727 "Element %r has no id attribute" % other)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1728 self.set('for', id)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1729
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1730 @for_element.deleter
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1731 def for_element(self):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1732 attrib = self.attrib
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1733 if 'id' in attrib:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1734 del attrib['id']
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1735
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1736
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1737 HtmlElementClassLookup._default_element_classes['label'] = LabelElement
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1738
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1739
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1740 ############################################################
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1741 ## Serialization
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1742 ############################################################
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1743
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1744 def html_to_xhtml(html):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1745 """Convert all tags in an HTML tree to XHTML by moving them to the
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1746 XHTML namespace.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1747 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1748 try:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1749 html = html.getroot()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1750 except AttributeError:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1751 pass
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1752 prefix = "{%s}" % XHTML_NAMESPACE
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1753 for el in html.iter(etree.Element):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1754 tag = el.tag
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1755 if tag[0] != '{':
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1756 el.tag = prefix + tag
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1757
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1758
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1759 def xhtml_to_html(xhtml):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1760 """Convert all tags in an XHTML tree to HTML by removing their
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1761 XHTML namespace.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1762 """
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1763 try:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1764 xhtml = xhtml.getroot()
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1765 except AttributeError:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1766 pass
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1767 prefix = "{%s}" % XHTML_NAMESPACE
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1768 prefix_len = len(prefix)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1769 for el in xhtml.iter(prefix + "*"):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1770 el.tag = el.tag[prefix_len:]
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1771
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1772
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1773 # This isn't a general match, but it's a match for what libxml2
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1774 # specifically serialises:
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1775 __str_replace_meta_content_type = re.compile(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1776 r'<meta http-equiv="Content-Type"[^>]*>').sub
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1777 __bytes_replace_meta_content_type = re.compile(
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1778 r'<meta http-equiv="Content-Type"[^>]*>'.encode('ASCII')).sub
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1779
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1780
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1781 def tostring(doc, pretty_print=False, include_meta_content_type=False,
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1782 encoding=None, method="html", with_tail=True, doctype=None):
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1783 """Return an HTML string representation of the document.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1784
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1785 Note: if include_meta_content_type is true this will create a
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1786 ``<meta http-equiv="Content-Type" ...>`` tag in the head;
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1787 regardless of the value of include_meta_content_type any existing
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1788 ``<meta http-equiv="Content-Type" ...>`` tag will be removed
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1789
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1790 The ``encoding`` argument controls the output encoding (defaults to
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1791 ASCII, with &#...; character references for any characters outside
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1792 of ASCII). Note that you can pass the name ``'unicode'`` as
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1793 ``encoding`` argument to serialise to a Unicode string.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1794
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1795 The ``method`` argument defines the output method. It defaults to
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1796 'html', but can also be 'xml' for xhtml output, or 'text' to
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1797 serialise to plain text without markup.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1798
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1799 To leave out the tail text of the top-level element that is being
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1800 serialised, pass ``with_tail=False``.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1801
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1802 The ``doctype`` option allows passing in a plain string that will
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1803 be serialised before the XML tree. Note that passing in non
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1804 well-formed content here will make the XML output non well-formed.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1805 Also, an existing doctype in the document tree will not be removed
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1806 when serialising an ElementTree instance.
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1807
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1808 Example::
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1809
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1810 >>> from lxml import html
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1811 >>> root = html.fragment_fromstring('<p>Hello<br>world!</p>')
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1812
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1813 >>> html.tostring(root)
56ad4e20f292 "planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
guerler
parents:
diff changeset
1814 b'<p>Hello<br>world!</p>'
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1815 >>> html.tostring(root, method='html')
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parents:
diff changeset
1816 b'<p>Hello<br>world!</p>'
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1817
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1818 >>> html.tostring(root, method='xml')
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1819 b'<p>Hello<br/>world!</p>'
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1820
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1821 >>> html.tostring(root, method='text')
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parents:
diff changeset
1822 b'Helloworld!'
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1823
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1824 >>> html.tostring(root, method='text', encoding='unicode')
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parents:
diff changeset
1825 u'Helloworld!'
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1826
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1827 >>> root = html.fragment_fromstring('<div><p>Hello<br>world!</p>TAIL</div>')
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parents:
diff changeset
1828 >>> html.tostring(root[0], method='text', encoding='unicode')
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parents:
diff changeset
1829 u'Helloworld!TAIL'
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1830
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1831 >>> html.tostring(root[0], method='text', encoding='unicode', with_tail=False)
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parents:
diff changeset
1832 u'Helloworld!'
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1833
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1834 >>> doc = html.document_fromstring('<p>Hello<br>world!</p>')
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1835 >>> html.tostring(doc, method='html', encoding='unicode')
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parents:
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1836 u'<html><body><p>Hello<br>world!</p></body></html>'
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1837
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1838 >>> print(html.tostring(doc, method='html', encoding='unicode',
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parents:
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1839 ... doctype='<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"'
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1840 ... ' "http://www.w3.org/TR/html4/strict.dtd">'))
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diff changeset
1841 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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1842 <html><body><p>Hello<br>world!</p></body></html>
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1843 """
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1844 html = etree.tostring(doc, method=method, pretty_print=pretty_print,
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1845 encoding=encoding, with_tail=with_tail,
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1846 doctype=doctype)
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1847 if method == 'html' and not include_meta_content_type:
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1848 if isinstance(html, str):
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1849 html = __str_replace_meta_content_type('', html)
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1850 else:
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1851 html = __bytes_replace_meta_content_type(bytes(), html)
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1852 return html
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1853
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1854
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1855 tostring.__doc__ = __fix_docstring(tostring.__doc__)
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1856
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1857
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1858 def open_in_browser(doc, encoding=None):
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1859 """
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1860 Open the HTML document in a web browser, saving it to a temporary
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1861 file to open it. Note that this does not delete the file after
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1862 use. This is mainly meant for debugging.
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1863 """
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1864 import os
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1865 import webbrowser
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1866 import tempfile
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1867 if not isinstance(doc, etree._ElementTree):
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1868 doc = etree.ElementTree(doc)
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1869 handle, fn = tempfile.mkstemp(suffix='.html')
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1870 f = os.fdopen(handle, 'wb')
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1871 try:
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1872 doc.write(f, method="html", encoding=encoding or doc.docinfo.encoding or "UTF-8")
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1873 finally:
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1874 # we leak the file itself here, but we should at least close it
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1875 f.close()
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1876 url = 'file://' + fn.replace(os.path.sep, '/')
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1877 print(url)
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1878 webbrowser.open(url)
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1879
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1880
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1881 ################################################################################
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1882 # configure Element class lookup
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1883 ################################################################################
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1884
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1885 class HTMLParser(etree.HTMLParser):
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1886 """An HTML parser that is configured to return lxml.html Element
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1887 objects.
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1888 """
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1889 def __init__(self, **kwargs):
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1890 super(HTMLParser, self).__init__(**kwargs)
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1891 self.set_element_class_lookup(HtmlElementClassLookup())
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1892
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1893
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1894 class XHTMLParser(etree.XMLParser):
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1895 """An XML parser that is configured to return lxml.html Element
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1896 objects.
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diff changeset
1897
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1898 Note that this parser is not really XHTML aware unless you let it
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1899 load a DTD that declares the HTML entities. To do this, make sure
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1900 you have the XHTML DTDs installed in your catalogs, and create the
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1901 parser like this::
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1902
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1903 >>> parser = XHTMLParser(load_dtd=True)
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1904
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1905 If you additionally want to validate the document, use this::
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1906
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1907 >>> parser = XHTMLParser(dtd_validation=True)
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1908
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1909 For catalog support, see http://www.xmlsoft.org/catalog.html.
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1910 """
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1911 def __init__(self, **kwargs):
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1912 super(XHTMLParser, self).__init__(**kwargs)
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1913 self.set_element_class_lookup(HtmlElementClassLookup())
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1914
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1915
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1916 def Element(*args, **kw):
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1917 """Create a new HTML Element.
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1918
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1919 This can also be used for XHTML documents.
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1920 """
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1921 v = html_parser.makeelement(*args, **kw)
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1922 return v
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1923
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1924
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1925 html_parser = HTMLParser()
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1926 xhtml_parser = XHTMLParser()