bin/flat-odf-cleanup.py

   1 #!/usr/bin/python3
   2 # -*- tab-width: 4; indent-tabs-mode: nil; py-indent-offset: 4 -*-
   3 #
   4 # This file is part of the LibreOffice project.
   5 #
   6 # This Source Code Form is subject to the terms of the Mozilla Public
   7 # License, v. 2.0. If a copy of the MPL was not distributed with this
   8 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   9 #
  10
  11 import sys
  12 # sadly need lxml because the python one doesn't preserve namespace prefixes
  13 # and type-detection looks for the string "office:document"
  14 from lxml import etree as ET
  15 #import xml.etree.ElementTree as ET
  16
  17 def get_used_p_styles(root):
  18     elementnames = [
  19         ".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}p",
  20         ".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}h",
  21         ".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}alphabetical-index-entry-template",
  22         ".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}bibliography-entry-template",
  23         ".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}illustration-index-entry-template",
  24         ".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-source-style",
  25         ".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}object-index-entry-template",
  26         ".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}table-index-entry-template",
  27         ".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}table-of-content-entry-template",
  28         ".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}user-index-entry-template",
  29     ]
  30
  31     # document content
  32     ps = sum([root.findall(e) for e in elementnames], [])
  33     usedpstyles = set()
  34     usedcondstyles = set()
  35     for p in ps:
  36         usedpstyles.add(p.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}style-name"))
  37         if p.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}cond-style-name"):
  38             usedcondstyles.add(p.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}cond-style-name"))
  39         if p.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}class-names"):
  40             for style in p.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}class-names").split(" "):
  41                 usedpstyles.add(style)
  42     for shape in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}text-style-name]"):
  43         usedpstyles.add(shape.get("{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}text-style-name"))
  44     for tabletemplate in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:table:1.0}paragraph-style-name]"):
  45         usedpstyles.add(tabletemplate.get("{urn:oasis:names:tc:opendocument:xmlns:table:1.0}paragraph-style-name"))
  46     for page in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}register-truth-ref-style-name]"):
  47         usedpstyles.add(page.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}register-truth-ref-style-name"))
  48     for form in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:form:1.0}text-style-name]"):
  49         usedpstyles.add(form.get("{urn:oasis:names:tc:opendocument:xmlns:form:1.0}text-style-name"))
  50     # conditional styles
  51     for condstyle in usedcondstyles:
  52         for map_ in root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='paragraph'][@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name='" + condstyle + "']/{urn:oasis:names:tc:opendocument:xmlns:style:1.0}map"):
  53             usedpstyles.add(map_.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}apply-style-name"))
  54     # other styles
  55     for notesconfig in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:text:1.0}default-style-name]"):
  56         usedpstyles.add(notesconfig.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}default-style-name"))
  57     return usedpstyles
  58
  59 def add_parent_styles(usedstyles, styles):
  60     size = -1
  61     while size != len(usedstyles):
  62         size = len(usedstyles)
  63         for style in styles:
  64             if style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name") in usedstyles:
  65                 if style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}parent-style-name"):
  66                     usedstyles.add(style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}parent-style-name"))
  67                 # only for paragraph styles and master-pages
  68                 if style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}next-style-name"):
  69                     usedstyles.add(style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}next-style-name"))
  70
  71 def remove_unused_styles(root, usedstyles, styles, name):
  72     for style in styles:
  73         print(style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name"))
  74         if not(style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name") in usedstyles):
  75             print("removing unused " + name + " " + style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name"))
  76             # it is really dumb that there is no parent pointer in dom
  77             try:
  78                 root.find(".//{urn:oasis:names:tc:opendocument:xmlns:office:1.0}automatic-styles").remove(style)
  79             except ValueError:
  80                 root.find(".//{urn:oasis:names:tc:opendocument:xmlns:office:1.0}styles").remove(style)
  81
  82 def remove_unused_drawings(root, useddrawings, drawings, name):
  83     for drawing in drawings:
  84         print(drawing.get("{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}name"))
  85         if not(drawing.get("{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}name") in useddrawings):
  86             print("removing unused " + name + " " + drawing.get("{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}name"))
  87             root.find(".//{urn:oasis:names:tc:opendocument:xmlns:office:1.0}styles").remove(drawing)
  88
  89 def collect_all_attribute(usedstyles, attribute):
  90     for element in root.findall(".//*[@" + attribute + "]"):
  91         usedstyles.add(element.get(attribute))
  92
  93 def collect_all_attribute_list(usedstyles, attribute):
  94     for element in root.findall(".//*[@" + attribute + "]"):
  95         for style in element.get(attribute).split(" "):
  96             usedstyles.add(style)
  97
  98 def remove_unused(root):
  99     # 1) find all elements that may reference page styles - this gets rid of some paragraphs
 100     usedpstyles = get_used_p_styles(root)
 101     print(usedpstyles)
 102     usedtstyles = set()
 103     tables = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:table:1.0}table")
 104     print(tables)
 105     for table in tables:
 106         usedtstyles.add(table.get("{urn:oasis:names:tc:opendocument:xmlns:table:1.0}style-name"))
 107     pstyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='paragraph']")
 108     tstyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='table']")
 109     usedmasterpages = {"Standard"} # assume this is the default on page 1
 110     # only automatic styles may have page breaks in LO, so no need to chase parents or nexts
 111     for pstyle in pstyles:
 112         print(pstyle.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name"))
 113         if pstyle.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name") in usedpstyles:
 114             usedmasterpages.add(pstyle.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}master-page-name"))
 115     for tstyle in tstyles:
 116         if tstyle.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name") in usedtstyles:
 117             usedmasterpages.add(tstyle.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}master-page-name"))
 118     for node in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:text:1.0}master-page-name]"):
 119         usedmasterpages.add(node.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}master-page-name"))
 120     for node in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}master-page-name]"):
 121         usedmasterpages.add(node.get("{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}master-page-name"))
 122     print(usedmasterpages)
 123     # iterate parent/next until no more masterpage is added
 124     size = -1
 125     while size != len(usedmasterpages):
 126         size = len(usedmasterpages)
 127         for mp in root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}master-page"):
 128             if mp.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name") in usedmasterpages:
 129                 if mp.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}parent-style-name"):
 130                     usedmasterpages.add(mp.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}parent-style-name"))
 131                 if mp.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}next-style-name"):
 132                     usedmasterpages.add(mp.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}next-style-name"))
 133     # remove unused masterpages
 134     for mp in root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}master-page"):
 135         if not(mp.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name") in usedmasterpages):
 136             print("removing unused master page " + mp.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name"))
 137             # there is no way to get the parent element???
 138             root.find(".//{urn:oasis:names:tc:opendocument:xmlns:office:1.0}master-styles").remove(mp)
 139
 140     # 2) remove unused paragraph styles
 141     usedpstyles = get_used_p_styles(root)
 142
 143     add_parent_styles(usedpstyles, pstyles)
 144     remove_unused_styles(root, usedpstyles, pstyles, "paragraph style")
 145
 146     # 3) unused list styles - keep referenced from still used paragraph styles
 147     usedliststyles = set()
 148     for style in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}list-style-name]"):
 149         usedliststyles.add(style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}list-style-name"))
 150     for list_ in root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}list[@{urn:oasis:names:tc:opendocument:xmlns:text:1.0}style-name]"):
 151         usedliststyles.add(list_.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}style-name"))
 152     for listitem in root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}list-item[@{urn:oasis:names:tc:opendocument:xmlns:text:1.0}style-override]"):
 153         usedliststyles.add(listitem.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}style-override"))
 154     for numpara in root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}numbered-paragraph[@{urn:oasis:names:tc:opendocument:xmlns:text:1.0}style-name]"):
 155         usedliststyles.add(list_.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}style-name"))
 156     # ignore ones that are children of style:graphic-properties, those must be handled as the containing style
 157     # there is no inheritance for these
 158     liststyles = root.findall("./*/{urn:oasis:names:tc:opendocument:xmlns:text:1.0}list-style")
 159     remove_unused_styles(root, usedliststyles, liststyles, "list style")
 160
 161     # 4) unused text styles
 162     usedtextstyles = set()
 163     usedsectionstyles = set()
 164     usedrubystyles = set()
 165
 166     sections = {
 167         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}alphabetical-index",
 168         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}bibliography",
 169         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}illustration-index",
 170         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-title",
 171         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}object-index",
 172         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}section",
 173         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}table-of-content",
 174         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}table-index",
 175         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}user-index",
 176     }
 177     texts = {
 178         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}a",
 179         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-bibliography",
 180         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-chapter",
 181         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-link-end",
 182         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-link-start",
 183         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-page-number",
 184         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-span",
 185         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-tab-stop",
 186         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-text",
 187         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-title-template",
 188         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}linenumbering-configuration",
 189         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}list-level-style-number",
 190         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}list-level-style-bullet",
 191         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}outline-level-style",
 192         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}ruby-text",
 193         "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}span",
 194     }
 195     for element in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:text:1.0}style-name]"):
 196         style = element.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}style-name")
 197         if element.tag == "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}ruby":
 198             usedrubystyles.add(style)
 199         elif element.tag in sections:
 200             usedsectionstyles.add(style)
 201         elif element.tag in texts:
 202             usedtextstyles.add(style)
 203
 204     collect_all_attribute(usedtextstyles, "{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style-name")
 205     collect_all_attribute(usedtextstyles, "{urn:oasis:names:tc:opendocument:xmlns:style:1.0}leader-text-style")
 206     collect_all_attribute(usedtextstyles, "{urn:oasis:names:tc:opendocument:xmlns:style:1.0}text-line-through-text-style")
 207     collect_all_attribute(usedtextstyles, "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}visited-style-name")
 208     collect_all_attribute(usedtextstyles, "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}main-entry-style-name")
 209     collect_all_attribute(usedtextstyles, "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}citation-style-name")
 210     collect_all_attribute(usedtextstyles, "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}citation-body-style-name")
 211     for span in root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}span[@{urn:oasis:names:tc:opendocument:xmlns:text:1.0}class-names]"):
 212         for style in span.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}class-names").split(" "):
 213             usedtextstyles.add(style)
 214     textstyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='text']")
 215     add_parent_styles(usedtextstyles, textstyles)
 216     remove_unused_styles(root, usedtextstyles, textstyles, "text style")
 217
 218     # 5) unused ruby styles - can't have parents?
 219     rubystyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='ruby']")
 220     remove_unused_styles(root, usedrubystyles, rubystyles, "ruby style")
 221
 222     # 6) unused section styles - can't have parents?
 223     sectionstyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='section']")
 224     remove_unused_styles(root, usedsectionstyles, sectionstyles, "section style")
 225
 226     # 7) presentation styles
 227     usedpresentationstyles = set()
 228
 229     collect_all_attribute(usedpresentationstyles, "{urn:oasis:names:tc:opendocument:xmlns:presentation:1.0}style-name")
 230     collect_all_attribute_list(usedpresentationstyles, "{urn:oasis:names:tc:opendocument:xmlns:presentation:1.0}class-names")
 231
 232     presentationstyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='presentation']")
 233     add_parent_styles(usedpresentationstyles, presentationstyles)
 234     remove_unused_styles(root, usedpresentationstyles, presentationstyles, "presentation style")
 235
 236     # 8) graphic styles
 237     pages = {
 238         "{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}page",
 239         "{urn:oasis:names:tc:opendocument:xmlns:presentation:1.0}notes",
 240         "{urn:oasis:names:tc:opendocument:xmlns:style:1.0}handout-master",
 241         "{urn:oasis:names:tc:opendocument:xmlns:style:1.0}master-page",
 242     }
 243     usedgraphicstyles = set()
 244     useddrawingpagestyles = set()
 245     for element in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}style-name]"):
 246         style = element.get("{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}style-name")
 247         if element.tag in pages:
 248             useddrawingpagestyles.add(style)
 249         else:
 250             usedgraphicstyles.add(style)
 251     collect_all_attribute_list(usedgraphicstyles, "{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}class-names")
 252
 253     graphicstyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='graphic']")
 254     add_parent_styles(usedgraphicstyles, graphicstyles)
 255     remove_unused_styles(root, usedgraphicstyles, graphicstyles, "graphic style")
 256
 257     # 9) drawing-page styles
 258     drawingpagestyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='drawing-page']")
 259     add_parent_styles(useddrawingpagestyles, drawingpagestyles)
 260     remove_unused_styles(root, useddrawingpagestyles, drawingpagestyles, "drawing-page style")
 261
 262     # 10) page layouts
 263     usedpagelayouts = set()
 264     collect_all_attribute(usedpagelayouts, "{urn:oasis:names:tc:opendocument:xmlns:style:1.0}page-layout-name")
 265     pagelayouts = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}page-layout")
 266     remove_unused_styles(root, usedpagelayouts, pagelayouts, "page layout")
 267
 268     # 11) presentation page layouts
 269     usedpresentationpagelayouts = set()
 270     collect_all_attribute(usedpresentationpagelayouts, "{urn:oasis:names:tc:opendocument:xmlns:presentation:1.0}presentation-page-layout-name")
 271     presentationpagelayouts = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}presentation-page-layout")
 272     remove_unused_styles(root, usedpresentationpagelayouts, presentationpagelayouts, "presentation page layout")
 273
 274     # 12) table (column/row/cell) styles
 275     usedtablestyles = set()
 276     usedtablecolumnstyles = set()
 277     usedtablerowstyles = set()
 278     usedtablecellstyles = set()
 279
 280     tables = {
 281         "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}table",
 282         "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}table:background",
 283     }
 284     tablecells = {
 285         "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}covered-table-cell",
 286         "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}table-cell",
 287         "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}body",
 288         "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}even-columns",
 289         "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}even-rows",
 290         "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}first-column",
 291         "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}first-row",
 292         "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}last-column",
 293         "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}last-row",
 294         "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}odd-columns",
 295         "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}odd-rows",
 296     }
 297     for element in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:table:1.0}style-name]"):
 298         style = element.get("{urn:oasis:names:tc:opendocument:xmlns:table:1.0}style-name")
 299         if element.tag == "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}table-column":
 300             usedtablecolumnstyles.add(style)
 301         elif element.tag == "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}table-row":
 302             usedtablerowstyles.add(style)
 303         elif element.tag in tables:
 304             usedtablestyles.add(style)
 305         elif element.tag in tablecells:
 306             usedtablecellstyles.add(style)
 307
 308     for element in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:database:1.0}style-name]"):
 309         style = element.get("{urn:oasis:names:tc:opendocument:xmlns:database:1.0}style-name")
 310         if element.tag == "{urn:oasis:names:tc:opendocument:xmlns:database:1.0}column":
 311             usedtablecolumnstyles.add(style)
 312         else: # db:query db:table-representation
 313             usedtablestyles.add(style)
 314
 315     collect_all_attribute(usedtablerowstyles, "{urn:oasis:names:tc:opendocument:xmlns:database:1.0}default-row-style-name")
 316     collect_all_attribute(usedtablecellstyles, "{urn:oasis:names:tc:opendocument:xmlns:database:1.0}default-cell-style-name")
 317     collect_all_attribute(usedtablecellstyles, "{urn:oasis:names:tc:opendocument:xmlns:table:1.0}default-cell-style-name")
 318
 319     tablecolumstyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='table-column']")
 320     tablerowstyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='table-row']")
 321     tablecellstyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='table-cell']")
 322     add_parent_styles(usedtablestyles, tstyles)
 323     add_parent_styles(usedtablecolumnstyles, tablecolumstyles)
 324     add_parent_styles(usedtablerowstyles, tablerowstyles)
 325     add_parent_styles(usedtablecellstyles, tablecellstyles)
 326     remove_unused_styles(root, usedtstyles, tstyles, "table style")
 327     remove_unused_styles(root, usedtablecolumnstyles, tablecolumstyles, "table column style")
 328     remove_unused_styles(root, usedtablerowstyles, tablerowstyles, "table row style")
 329     remove_unused_styles(root, usedtablecellstyles, tablecellstyles, "table cell style")
 330
 331     # 13) gradients
 332     usedgradients = set()
 333     collect_all_attribute(usedgradients, "{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}fill-gradient-name")
 334     collect_all_attribute(usedgradients, "{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}opacity-name")
 335     gradients = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}gradient")
 336     remove_unused_drawings(root, usedgradients, gradients, "gradient")
 337
 338     # 14) hatchs
 339     usedhatchs = set()
 340     collect_all_attribute(usedhatchs, "{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}fill-hatch-name")
 341     hatchs = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}hatch")
 342     remove_unused_drawings(root, usedhatchs, hatchs, "hatch")
 343
 344     # 15) bitmaps
 345     usedbitmaps = set()
 346     collect_all_attribute(usedbitmaps, "{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}fill-image-name")
 347     bitmaps = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}bitmap")
 348     remove_unused_drawings(root, usedbitmaps, bitmaps, "bitmap")
 349
 350     # 16) markers
 351     usedmarkers = set()
 352     collect_all_attribute(usedmarkers, "{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}marker-start")
 353     collect_all_attribute(usedmarkers, "{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}marker-end")
 354     markers = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}marker")
 355     remove_unused_drawings(root, usedmarkers, markers, "marker")
 356
 357     # 17) stroke-dash
 358     usedstrokedashs = set()
 359     collect_all_attribute(usedstrokedashs, "{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}stroke-dash")
 360     collect_all_attribute_list(usedstrokedashs, "{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}stroke-dash-names")
 361     strokedashs = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}stroke-dash")
 362     remove_unused_drawings(root, usedstrokedashs, strokedashs, "stroke-dash")
 363
 364     # TODO 3 other styles
 365
 366     # 13) unused font-face-decls
 367     usedfonts = set()
 368     collect_all_attribute(usedfonts, "{urn:oasis:names:tc:opendocument:xmlns:style:1.0}font-name")
 369     collect_all_attribute(usedfonts, "{urn:oasis:names:tc:opendocument:xmlns:style:1.0}font-name-asian")
 370     collect_all_attribute(usedfonts, "{urn:oasis:names:tc:opendocument:xmlns:style:1.0}font-name-complex")
 371     fonts = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}font-face")
 372     for font in fonts:
 373         if not(font.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name") in usedfonts):
 374             print("removing unused font-face " + font.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name"))
 375             root.find(".//{urn:oasis:names:tc:opendocument:xmlns:office:1.0}font-face-decls").remove(font)
 376
 377     # 14) remove rsid attributes
 378     styles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style")
 379     for style in styles:
 380         tp = style.find(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}text-properties")
 381         if tp is not None:
 382             if "{http://openoffice.org/2009/office}rsid" in tp.attrib:
 383                 print("removing rsid from " + style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name"))
 384                 del tp.attrib["{http://openoffice.org/2009/office}rsid"]
 385             if "{http://openoffice.org/2009/office}paragraph-rsid" in tp.attrib:
 386                 print("removing paragraph-rsid from " + style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name"))
 387                 del tp.attrib["{http://openoffice.org/2009/office}paragraph-rsid"]
 388
 389     # 15) unused user field decls
 390     useduserfields = set()
 391     for field in root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}user-field-get"):
 392         useduserfields.add(field.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}name"))
 393     for field in root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}user-field-input"):
 394         useduserfields.add(field.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}name"))
 395     for field in root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}user-field-decl"):
 396         if not(field.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}name") in useduserfields):
 397             print("removing unused user-field-decl " + field.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}name"))
 398             root.find(".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}user-field-decls").remove(field)
 399
 400     # remove office:settings
 401     settings = root.find(".//{urn:oasis:names:tc:opendocument:xmlns:office:1.0}settings")
 402     if settings is not None:
 403         root.remove(settings)
 404
 405     # scripts are almost never needed
 406     scripts = root.find(".//{urn:oasis:names:tc:opendocument:xmlns:office:1.0}scripts")
 407     if scripts is not None:
 408         root.remove(scripts)
 409
 410     # remove theme
 411     theme = root.find(".//{urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.0}theme")
 412     if theme is not None:
 413         theme.getparent().remove(theme)
 414
 415     # TODO: replace embedded image with some tiny one
 416     # TODO: perhaps replace text with xxx (optionally)?
 417
 418 if __name__ == "__main__":
 419     infile = sys.argv[1]
 420     outfile = sys.argv[2]
 421
 422     dom = ET.parse(infile)
 423     root = dom.getroot()
 424
 425     remove_unused(root)
 426
 427     # write output
 428     dom.write(outfile, encoding='utf-8', xml_declaration=True)
 429
 430     """
 431     TODO
 432     chart:style-name
 433     -> chart
 434     style:data-style-name
 435     -> data style
 436     style:percentage-data-style-name
 437     -> data style
 438     """
 439
 440 # vim: set shiftwidth=4 softtabstop=4 expandtab: