Mercurial > repos > shellac > guppy_basecaller
annotate env/lib/python3.7/site-packages/docutils/transforms/peps.py @ 3:758bc20232e8 draft
"planemo upload commit 2a0fe2cc28b09e101d37293e53e82f61762262ec"
author | shellac |
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date | Thu, 14 May 2020 16:20:52 -0400 |
parents | 26e78fe6e8c4 |
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1 # $Id: peps.py 7995 2016-12-10 17:50:59Z milde $ |
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2 # Author: David Goodger <goodger@python.org> |
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3 # Copyright: This module has been placed in the public domain. |
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4 |
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5 """ |
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6 Transforms for PEP processing. |
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7 |
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8 - `Headers`: Used to transform a PEP's initial RFC-2822 header. It remains a |
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9 field list, but some entries get processed. |
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10 - `Contents`: Auto-inserts a table of contents. |
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11 - `PEPZero`: Special processing for PEP 0. |
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12 """ |
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13 |
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14 __docformat__ = 'reStructuredText' |
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15 |
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16 import sys |
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17 import os |
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18 import re |
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19 import time |
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20 from docutils import nodes, utils, languages |
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21 from docutils import ApplicationError, DataError |
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22 from docutils.transforms import Transform, TransformError |
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23 from docutils.transforms import parts, references, misc |
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24 |
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25 |
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26 class Headers(Transform): |
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27 |
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28 """ |
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29 Process fields in a PEP's initial RFC-2822 header. |
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30 """ |
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31 |
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32 default_priority = 360 |
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33 |
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34 pep_url = 'pep-%04d' |
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35 pep_cvs_url = ('http://hg.python.org' |
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36 '/peps/file/default/pep-%04d.txt') |
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37 rcs_keyword_substitutions = ( |
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38 (re.compile(r'\$' r'RCSfile: (.+),v \$$', re.IGNORECASE), r'\1'), |
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39 (re.compile(r'\$[a-zA-Z]+: (.+) \$$'), r'\1'),) |
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40 |
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41 def apply(self): |
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42 if not len(self.document): |
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43 # @@@ replace these DataErrors with proper system messages |
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44 raise DataError('Document tree is empty.') |
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45 header = self.document[0] |
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46 if not isinstance(header, nodes.field_list) or \ |
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47 'rfc2822' not in header['classes']: |
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48 raise DataError('Document does not begin with an RFC-2822 ' |
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49 'header; it is not a PEP.') |
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50 pep = None |
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51 for field in header: |
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52 if field[0].astext().lower() == 'pep': # should be the first field |
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53 value = field[1].astext() |
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54 try: |
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55 pep = int(value) |
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56 cvs_url = self.pep_cvs_url % pep |
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57 except ValueError: |
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58 pep = value |
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59 cvs_url = None |
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60 msg = self.document.reporter.warning( |
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61 '"PEP" header must contain an integer; "%s" is an ' |
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62 'invalid value.' % pep, base_node=field) |
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63 msgid = self.document.set_id(msg) |
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64 prb = nodes.problematic(value, value or '(none)', |
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65 refid=msgid) |
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66 prbid = self.document.set_id(prb) |
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67 msg.add_backref(prbid) |
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68 if len(field[1]): |
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69 field[1][0][:] = [prb] |
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70 else: |
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71 field[1] += nodes.paragraph('', '', prb) |
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72 break |
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73 if pep is None: |
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74 raise DataError('Document does not contain an RFC-2822 "PEP" ' |
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75 'header.') |
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76 if pep == 0: |
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77 # Special processing for PEP 0. |
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78 pending = nodes.pending(PEPZero) |
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79 self.document.insert(1, pending) |
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80 self.document.note_pending(pending) |
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81 if len(header) < 2 or header[1][0].astext().lower() != 'title': |
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82 raise DataError('No title!') |
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83 for field in header: |
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84 name = field[0].astext().lower() |
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85 body = field[1] |
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86 if len(body) > 1: |
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87 raise DataError('PEP header field body contains multiple ' |
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88 'elements:\n%s' % field.pformat(level=1)) |
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89 elif len(body) == 1: |
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90 if not isinstance(body[0], nodes.paragraph): |
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91 raise DataError('PEP header field body may only contain ' |
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92 'a single paragraph:\n%s' |
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93 % field.pformat(level=1)) |
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94 elif name == 'last-modified': |
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95 date = time.strftime( |
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96 '%d-%b-%Y', |
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97 time.localtime(os.stat(self.document['source'])[8])) |
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98 if cvs_url: |
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99 body += nodes.paragraph( |
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100 '', '', nodes.reference('', date, refuri=cvs_url)) |
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101 else: |
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102 # empty |
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103 continue |
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104 para = body[0] |
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105 if name == 'author': |
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106 for node in para: |
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107 if isinstance(node, nodes.reference): |
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108 node.replace_self(mask_email(node)) |
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109 elif name == 'discussions-to': |
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110 for node in para: |
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111 if isinstance(node, nodes.reference): |
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112 node.replace_self(mask_email(node, pep)) |
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113 elif name in ('replaces', 'replaced-by', 'requires'): |
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114 newbody = [] |
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115 space = nodes.Text(' ') |
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116 for refpep in re.split(r',?\s+', body.astext()): |
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117 pepno = int(refpep) |
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118 newbody.append(nodes.reference( |
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119 refpep, refpep, |
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120 refuri=(self.document.settings.pep_base_url |
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121 + self.pep_url % pepno))) |
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122 newbody.append(space) |
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123 para[:] = newbody[:-1] # drop trailing space |
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124 elif name == 'last-modified': |
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125 utils.clean_rcs_keywords(para, self.rcs_keyword_substitutions) |
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126 if cvs_url: |
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127 date = para.astext() |
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128 para[:] = [nodes.reference('', date, refuri=cvs_url)] |
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129 elif name == 'content-type': |
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130 pep_type = para.astext() |
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131 uri = self.document.settings.pep_base_url + self.pep_url % 12 |
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132 para[:] = [nodes.reference('', pep_type, refuri=uri)] |
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133 elif name == 'version' and len(body): |
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134 utils.clean_rcs_keywords(para, self.rcs_keyword_substitutions) |
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135 |
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136 |
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137 class Contents(Transform): |
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138 |
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139 """ |
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140 Insert an empty table of contents topic and a transform placeholder into |
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141 the document after the RFC 2822 header. |
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142 """ |
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143 |
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144 default_priority = 380 |
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145 |
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146 def apply(self): |
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147 language = languages.get_language(self.document.settings.language_code, |
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148 self.document.reporter) |
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149 name = language.labels['contents'] |
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150 title = nodes.title('', name) |
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151 topic = nodes.topic('', title, classes=['contents']) |
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152 name = nodes.fully_normalize_name(name) |
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153 if not self.document.has_name(name): |
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154 topic['names'].append(name) |
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155 self.document.note_implicit_target(topic) |
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156 pending = nodes.pending(parts.Contents) |
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157 topic += pending |
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158 self.document.insert(1, topic) |
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159 self.document.note_pending(pending) |
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160 |
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161 |
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162 class TargetNotes(Transform): |
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163 |
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164 """ |
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165 Locate the "References" section, insert a placeholder for an external |
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166 target footnote insertion transform at the end, and schedule the |
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167 transform to run immediately. |
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168 """ |
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169 |
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170 default_priority = 520 |
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171 |
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172 def apply(self): |
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173 doc = self.document |
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174 i = len(doc) - 1 |
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175 refsect = copyright = None |
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176 while i >= 0 and isinstance(doc[i], nodes.section): |
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177 title_words = doc[i][0].astext().lower().split() |
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178 if 'references' in title_words: |
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179 refsect = doc[i] |
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180 break |
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181 elif 'copyright' in title_words: |
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182 copyright = i |
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183 i -= 1 |
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184 if not refsect: |
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185 refsect = nodes.section() |
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186 refsect += nodes.title('', 'References') |
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187 doc.set_id(refsect) |
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188 if copyright: |
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189 # Put the new "References" section before "Copyright": |
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190 doc.insert(copyright, refsect) |
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191 else: |
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192 # Put the new "References" section at end of doc: |
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193 doc.append(refsect) |
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194 pending = nodes.pending(references.TargetNotes) |
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195 refsect.append(pending) |
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196 self.document.note_pending(pending, 0) |
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197 pending = nodes.pending(misc.CallBack, |
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198 details={'callback': self.cleanup_callback}) |
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199 refsect.append(pending) |
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200 self.document.note_pending(pending, 1) |
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201 |
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202 def cleanup_callback(self, pending): |
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203 """ |
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204 Remove an empty "References" section. |
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205 |
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206 Called after the `references.TargetNotes` transform is complete. |
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207 """ |
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208 if len(pending.parent) == 2: # <title> and <pending> |
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209 pending.parent.parent.remove(pending.parent) |
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210 |
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211 |
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212 class PEPZero(Transform): |
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213 |
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214 """ |
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215 Special processing for PEP 0. |
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216 """ |
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217 |
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218 default_priority =760 |
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219 |
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220 def apply(self): |
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221 visitor = PEPZeroSpecial(self.document) |
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222 self.document.walk(visitor) |
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223 self.startnode.parent.remove(self.startnode) |
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224 |
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225 |
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226 class PEPZeroSpecial(nodes.SparseNodeVisitor): |
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227 |
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228 """ |
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229 Perform the special processing needed by PEP 0: |
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230 |
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231 - Mask email addresses. |
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232 |
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233 - Link PEP numbers in the second column of 4-column tables to the PEPs |
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234 themselves. |
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235 """ |
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236 |
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237 pep_url = Headers.pep_url |
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238 |
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239 def unknown_visit(self, node): |
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240 pass |
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241 |
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242 def visit_reference(self, node): |
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243 node.replace_self(mask_email(node)) |
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244 |
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245 def visit_field_list(self, node): |
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246 if 'rfc2822' in node['classes']: |
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247 raise nodes.SkipNode |
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248 |
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249 def visit_tgroup(self, node): |
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250 self.pep_table = node['cols'] == 4 |
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251 self.entry = 0 |
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252 |
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253 def visit_colspec(self, node): |
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254 self.entry += 1 |
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255 if self.pep_table and self.entry == 2: |
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256 node['classes'].append('num') |
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257 |
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258 def visit_row(self, node): |
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259 self.entry = 0 |
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260 |
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261 def visit_entry(self, node): |
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262 self.entry += 1 |
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263 if self.pep_table and self.entry == 2 and len(node) == 1: |
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264 node['classes'].append('num') |
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265 p = node[0] |
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266 if isinstance(p, nodes.paragraph) and len(p) == 1: |
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267 text = p.astext() |
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268 try: |
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269 pep = int(text) |
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270 ref = (self.document.settings.pep_base_url |
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271 + self.pep_url % pep) |
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272 p[0] = nodes.reference(text, text, refuri=ref) |
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273 except ValueError: |
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274 pass |
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275 |
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276 |
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277 non_masked_addresses = ('peps@python.org', |
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278 'python-list@python.org', |
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279 'python-dev@python.org') |
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280 |
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281 def mask_email(ref, pepno=None): |
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282 """ |
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283 Mask the email address in `ref` and return a replacement node. |
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284 |
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285 `ref` is returned unchanged if it contains no email address. |
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286 |
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287 For email addresses such as "user@host", mask the address as "user at |
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288 host" (text) to thwart simple email address harvesters (except for those |
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289 listed in `non_masked_addresses`). If a PEP number (`pepno`) is given, |
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290 return a reference including a default email subject. |
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291 """ |
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292 if ref.hasattr('refuri') and ref['refuri'].startswith('mailto:'): |
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293 if ref['refuri'][8:] in non_masked_addresses: |
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294 replacement = ref[0] |
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295 else: |
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296 replacement_text = ref.astext().replace('@', ' at ') |
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297 replacement = nodes.raw('', replacement_text, format='html') |
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298 if pepno is None: |
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299 return replacement |
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300 else: |
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301 ref['refuri'] += '?subject=PEP%%20%s' % pepno |
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302 ref[:] = [replacement] |
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303 return ref |
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304 else: |
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305 return ref |