Mercurial > repos > guerler > springsuite

annotate planemo/lib/python3.7/site-packages/docutils/transforms/parts.py @ 1:56ad4e20f292 draft

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"planemo upload commit 6eee67778febed82ddd413c3ca40b3183a3898f1"
author guerler
date Fri, 31 Jul 2020 00:32:28 -0400
parents d30785e31577
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1 # $Id: parts.py 8403 2019-10-11 10:09:53Z milde $
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2 # Authors: David Goodger <goodger@python.org>; Ueli Schlaepfer; Dmitry Jemerov
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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 related to document parts.
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7 """
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8
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9 __docformat__ = 'reStructuredText'
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10
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11
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12 import re
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13 import sys
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14 from docutils import nodes, utils
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15 from docutils.transforms import TransformError, Transform
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16
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17
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18 class SectNum(Transform):
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19
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20 """
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21 Automatically assigns numbers to the titles of document sections.
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22
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23 It is possible to limit the maximum section level for which the numbers
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24 are added. For those sections that are auto-numbered, the "autonum"
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25 attribute is set, informing the contents table generator that a different
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26 form of the TOC should be used.
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27 """
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28
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29 default_priority = 710
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30 """Should be applied before `Contents`."""
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31
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32 def apply(self):
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33 self.maxdepth = self.startnode.details.get('depth', None)
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34 self.startvalue = self.startnode.details.get('start', 1)
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35 self.prefix = self.startnode.details.get('prefix', '')
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36 self.suffix = self.startnode.details.get('suffix', '')
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37 self.startnode.parent.remove(self.startnode)
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38 if self.document.settings.sectnum_xform:
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39 if self.maxdepth is None:
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40 self.maxdepth = sys.maxsize
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41 self.update_section_numbers(self.document)
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42 else: # store details for eventual section numbering by the writer
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43 self.document.settings.sectnum_depth = self.maxdepth
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44 self.document.settings.sectnum_start = self.startvalue
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45 self.document.settings.sectnum_prefix = self.prefix
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46 self.document.settings.sectnum_suffix = self.suffix
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47
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48 def update_section_numbers(self, node, prefix=(), depth=0):
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49 depth += 1
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50 if prefix:
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51 sectnum = 1
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52 else:
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53 sectnum = self.startvalue
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54 for child in node:
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55 if isinstance(child, nodes.section):
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56 numbers = prefix + (str(sectnum),)
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57 title = child[0]
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58 # Use &nbsp; for spacing:
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59 generated = nodes.generated(
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60 '', (self.prefix + '.'.join(numbers) + self.suffix
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61 + u'\u00a0' * 3),
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62 classes=['sectnum'])
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63 title.insert(0, generated)
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64 title['auto'] = 1
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65 if depth < self.maxdepth:
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66 self.update_section_numbers(child, numbers, depth)
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67 sectnum += 1
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68
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69
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70 class Contents(Transform):
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71
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72 """
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73 This transform generates a table of contents from the entire document tree
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74 or from a single branch. It locates "section" elements and builds them
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75 into a nested bullet list, which is placed within a "topic" created by the
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76 contents directive. A title is either explicitly specified, taken from
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77 the appropriate language module, or omitted (local table of contents).
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78 The depth may be specified. Two-way references between the table of
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79 contents and section titles are generated (requires Writer support).
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80
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81 This transform requires a startnode, which contains generation
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82 options and provides the location for the generated table of contents (the
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83 startnode is replaced by the table of contents "topic").
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84 """
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85
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86 default_priority = 720
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87
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88 def apply(self):
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89 try: # let the writer (or output software) build the contents list?
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90 toc_by_writer = self.document.settings.use_latex_toc
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91 except AttributeError:
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92 toc_by_writer = False
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93 details = self.startnode.details
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94 if 'local' in details:
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95 startnode = self.startnode.parent.parent
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96 while not (isinstance(startnode, nodes.section)
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97 or isinstance(startnode, nodes.document)):
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98 # find the ToC root: a direct ancestor of startnode
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99 startnode = startnode.parent
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100 else:
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101 startnode = self.document
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102 self.toc_id = self.startnode.parent['ids'][0]
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103 if 'backlinks' in details:
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104 self.backlinks = details['backlinks']
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105 else:
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106 self.backlinks = self.document.settings.toc_backlinks
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107 if toc_by_writer:
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108 # move customization settings to the parent node
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109 self.startnode.parent.attributes.update(details)
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110 self.startnode.parent.remove(self.startnode)
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111 else:
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112 contents = self.build_contents(startnode)
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113 if len(contents):
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114 self.startnode.replace_self(contents)
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115 else:
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116 self.startnode.parent.parent.remove(self.startnode.parent)
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117
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118 def build_contents(self, node, level=0):
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119 level += 1
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120 sections = [sect for sect in node if isinstance(sect, nodes.section)]
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121 entries = []
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122 autonum = 0
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123 depth = self.startnode.details.get('depth', sys.maxsize)
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124 for section in sections:
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125 title = section[0]
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126 auto = title.get('auto') # May be set by SectNum.
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127 entrytext = self.copy_and_filter(title)
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128 reference = nodes.reference('', '', refid=section['ids'][0],
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129 *entrytext)
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130 ref_id = self.document.set_id(reference,
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131 suggested_prefix='toc-entry')
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132 entry = nodes.paragraph('', '', reference)
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133 item = nodes.list_item('', entry)
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134 if ( self.backlinks in ('entry', 'top')
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135 and title.next_node(nodes.reference) is None):
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136 if self.backlinks == 'entry':
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137 title['refid'] = ref_id
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138 elif self.backlinks == 'top':
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139 title['refid'] = self.toc_id
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140 if level < depth:
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141 subsects = self.build_contents(section, level)
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142 item += subsects
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143 entries.append(item)
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144 if entries:
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145 contents = nodes.bullet_list('', *entries)
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146 if auto:
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147 contents['classes'].append('auto-toc')
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148 return contents
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149 else:
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150 return []
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151
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152 def copy_and_filter(self, node):
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153 """Return a copy of a title, with references, images, etc. removed."""
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154 visitor = ContentsFilter(self.document)
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155 node.walkabout(visitor)
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156 return visitor.get_entry_text()
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157
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158
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159 class ContentsFilter(nodes.TreeCopyVisitor):
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160
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161 def get_entry_text(self):
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162 return self.get_tree_copy().children
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163
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164 def visit_citation_reference(self, node):
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165 raise nodes.SkipNode
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166
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167 def visit_footnote_reference(self, node):
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168 raise nodes.SkipNode
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169
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170 def visit_image(self, node):
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171 if node.hasattr('alt'):
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172 self.parent.append(nodes.Text(node['alt']))
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173 raise nodes.SkipNode
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174
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175 def ignore_node_but_process_children(self, node):
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176 raise nodes.SkipDeparture
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177
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178 visit_problematic = ignore_node_but_process_children
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179 visit_reference = ignore_node_but_process_children
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180 visit_target = ignore_node_but_process_children