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#!/usr/bin/python3
# -*- tab-width: 4; indent-tabs-mode: nil; py-indent-offset: 4 -*-
#
# This file is part of the LibreOffice project.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
import sys
# sadly need lxml because the python one doesn't preserve namespace prefixes
# and type-detection looks for the string "office:document"
from lxml import etree as ET
#import xml.etree.ElementTree as ET
def get_used_p_styles(root):
elementnames = [
".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}p",
".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}h",
".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}alphabetical-index-entry-template",
".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}bibliography-entry-template",
".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}illustration-index-entry-template",
".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-source-style",
".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}object-index-entry-template",
".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}table-index-entry-template",
".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}table-of-content-entry-template",
".//{urn:oasis:names:tc:opendocument:xmlns:text:1.0}user-index-entry-template",
]
# document content
ps = sum([root.findall(e) for e in elementnames], [])
usedpstyles = set()
usedcondstyles = set()
for p in ps:
usedpstyles.add(p.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}style-name"))
if p.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}cond-style-name"):
usedcondstyles.add(p.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}cond-style-name"))
if p.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}class-names"):
for style in p.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}class-names").split(" "):
usedpstyles.add(style)
for shape in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}text-style-name]"):
usedpstyles.add(shape.get("{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}text-style-name"))
for tabletemplate in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:table:1.0}paragraph-style-name]"):
usedpstyles.add(tabletemplate.get("{urn:oasis:names:tc:opendocument:xmlns:table:1.0}paragraph-style-name"))
for page in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}register-truth-ref-style-name]"):
usedpstyles.add(page.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}register-truth-ref-style-name"))
for form in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:form:1.0}text-style-name]"):
usedpstyles.add(form.get("{urn:oasis:names:tc:opendocument:xmlns:form:1.0}text-style-name"))
# conditional styles
for condstyle in usedcondstyles:
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"):
usedpstyles.add(map_.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}apply-style-name"))
# other styles
for notesconfig in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:text:1.0}default-style-name]"):
usedpstyles.add(notesconfig.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}default-style-name"))
return usedpstyles
def add_parent_styles(usedstyles, styles):
size = -1
while size != len(usedstyles):
size = len(usedstyles)
for style in styles:
if style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name") in usedstyles:
if style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}parent-style-name"):
usedstyles.add(style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}parent-style-name"))
# only for paragraph styles and master-pages
if style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}next-style-name"):
usedstyles.add(style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}next-style-name"))
def remove_unused_styles(root, usedstyles, styles, name):
for style in styles:
print(style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name"))
if not(style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name") in usedstyles):
print("removing unused " + name + " " + style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name"))
# it is really dumb that there is no parent pointer in dom
try:
root.find(".//{urn:oasis:names:tc:opendocument:xmlns:office:1.0}automatic-styles").remove(style)
except ValueError:
root.find(".//{urn:oasis:names:tc:opendocument:xmlns:office:1.0}styles").remove(style)
def collect_all_attribute(usedstyles, attribute):
for element in root.findall(".//*[@" + attribute + "]"):
usedstyles.add(element.get(attribute))
def remove_unused(root):
# 1) find all elements that may reference page styles - this gets rid of some paragaraphs
usedpstyles = get_used_p_styles(root)
print(usedpstyles)
usedtstyles = set()
tables = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:table:1.0}table")
print(tables)
for table in tables:
usedtstyles.add(table.get("{urn:oasis:names:tc:opendocument:xmlns:table:1.0}style-name"))
pstyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='paragraph']")
tstyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='table']")
usedmasterpages = {"Standard"} # assume this is the default on page 1
# only automatic styles may have page breaks in LO, so no need to chase parents or nexts
for pstyle in pstyles:
print(pstyle.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name"))
if pstyle.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name") in usedpstyles:
usedmasterpages.add(pstyle.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}master-page-name"))
for tstyle in tstyles:
if tstyle.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name") in usedtstyles:
usedmasterpages.add(tstyle.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}master-page-name"))
for node in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:text:1.0}master-page-name]"):
usedmasterpages.add(node.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}master-page-name"))
for node in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}master-page-name]"):
usedmasterpages.add(node.get("{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}master-page-name"))
print(usedmasterpages)
# iterate parent/next until no more masterpage is added
size = -1
while size != len(usedmasterpages):
size = len(usedmasterpages)
for mp in root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}master-page"):
if mp.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name") in usedmasterpages:
if mp.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}parent-style-name"):
usedmasterpages.add(mp.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}parent-style-name"))
if mp.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}next-style-name"):
usedmasterpages.add(mp.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}next-style-name"))
# remove unused masterpages
for mp in root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}master-page"):
if not(mp.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name") in usedmasterpages):
print("removing unused master page " + mp.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name"))
# there is no way to get the parent element???
root.find(".//{urn:oasis:names:tc:opendocument:xmlns:office:1.0}master-styles").remove(mp)
# 2) remove unused paragraph styles
usedpstyles = get_used_p_styles(root)
add_parent_styles(usedpstyles, pstyles)
remove_unused_styles(root, usedpstyles, pstyles, "paragraph style")
# 3) unused list styles - keep referenced from still used paragraph styles
usedliststyles = set()
for style in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}list-style-name]"):
usedliststyles.add(style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}list-style-name)"))
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]"):
usedliststyles.add(list_.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}style-name"))
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]"):
usedliststyles.add(listitem.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}style-override"))
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]"):
usedliststyles.add(list_.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}style-name"))
# ignore ones that are children of style:graphic-properties, those must be handled as the containing style
# there is no inheritance for these
liststyles = root.findall("./*/{urn:oasis:names:tc:opendocument:xmlns:text:1.0}list-style")
remove_unused_styles(root, usedliststyles, liststyles, "list style")
# 4) unused text styles
usedtextstyles = set()
usedsectionstyles = set()
usedrubystyles = set()
sections = {
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}alphabetical-index",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}bibliography",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}illustration-index",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-title",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}object-index",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}section",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}table-of-content",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}table-index",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}user-index",
}
texts = {
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}a",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-bibliography",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-chapter",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-link-end",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-link-start",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-page-number",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-span",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-tab-stop",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-entry-text",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}index-title-template",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}linenumbering-configuration",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}list-level-style-number",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}list-level-style-bullet",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}outline-level-style",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}ruby-text",
"{urn:oasis:names:tc:opendocument:xmlns:text:1.0}span",
}
for element in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:text:1.0}style-name]"):
style = element.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}style-name")
if element.tag == "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}ruby":
usedrubystyles.add(style)
elif element.tag in sections:
usedsectionstyles.add(style)
elif element.tag in texts:
usedtextstyles.add(style)
collect_all_attribute(usedtextstyles, "{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style-name")
collect_all_attribute(usedtextstyles, "{urn:oasis:names:tc:opendocument:xmlns:style:1.0}leader-text-style")
collect_all_attribute(usedtextstyles, "{urn:oasis:names:tc:opendocument:xmlns:style:1.0}text-line-through-text-style")
collect_all_attribute(usedtextstyles, "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}visited-style-name")
collect_all_attribute(usedtextstyles, "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}main-entry-style-name")
collect_all_attribute(usedtextstyles, "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}citation-style-name")
collect_all_attribute(usedtextstyles, "{urn:oasis:names:tc:opendocument:xmlns:text:1.0}citation-body-style-name")
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]"):
for style in span.get("{urn:oasis:names:tc:opendocument:xmlns:text:1.0}class-names").split(" "):
usedtextstyles.add(style)
textstyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='text']")
add_parent_styles(usedtextstyles, textstyles)
remove_unused_styles(root, usedtextstyles, textstyles, "text style")
# 5) unused ruby styles - can't have parents?
rubystyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='ruby']")
remove_unused_styles(root, usedrubystyles, rubystyles, "ruby style")
# 6) unused section styles - can't have parents?
sectionstyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='section']")
remove_unused_styles(root, usedsectionstyles, sectionstyles, "section style")
# 7) presentation styles
usedpresentationstyles = set()
collect_all_attribute(usedpresentationstyles, "{urn:oasis:names:tc:opendocument:xmlns:presentation:1.0}style-name")
for element in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:presentation:1.0}class-names]"):
for style in element.get("{urn:oasis:names:tc:opendocument:xmlns:presentation:1.0}class-names").split(" "):
usedpresentationstyles.add(style)
presentationstyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='presentation']")
add_parent_styles(usedpresentationstyles, presentationstyles)
remove_unused_styles(root, usedpresentationstyles, presentationstyles, "presentation style")
# 8) graphic styles
pages = {
"{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}page",
"{urn:oasis:names:tc:opendocument:xmlns:presentation:1.0}notes",
"{urn:oasis:names:tc:opendocument:xmlns:style:1.0}handout-master",
"{urn:oasis:names:tc:opendocument:xmlns:style:1.0}master-page",
}
usedgraphicstyles = set()
useddrawingpagestyles = set()
for element in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}style-name]"):
style = element.get("{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}style-name")
if element.tag in pages:
useddrawingpagestyles.add(style)
else:
usedgraphicstyles.add(style)
for element in root.findall(".//*[@{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}class-names]"):
for style in element.get("{urn:oasis:names:tc:opendocument:xmlns:drawing:1.0}class-names").split(" "):
usedgraphicstyles.add(style)
graphicstyles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style[@{urn:oasis:names:tc:opendocument:xmlns:style:1.0}family='graphic']")
add_parent_styles(usedgraphicstyles, graphicstyles)
remove_unused_styles(root, usedgraphicstyles, graphicstyles, "graphic style")
# 9) drawing-page styles
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']")
add_parent_styles(useddrawingpagestyles, drawingpagestyles)
remove_unused_styles(root, useddrawingpagestyles, drawingpagestyles, "drawing-page style")
# TODO 3 other styles
# 13) unused font-face-decls
usedfonts = set()
collect_all_attribute(usedfonts, "{urn:oasis:names:tc:opendocument:xmlns:style:1.0}font-name")
collect_all_attribute(usedfonts, "{urn:oasis:names:tc:opendocument:xmlns:style:1.0}font-name-asian")
collect_all_attribute(usedfonts, "{urn:oasis:names:tc:opendocument:xmlns:style:1.0}font-name-complex")
fonts = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}font-face")
for font in fonts:
if not(font.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name") in usedfonts):
print("removing unused font-face " + font.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name"))
root.find(".//{urn:oasis:names:tc:opendocument:xmlns:office:1.0}font-face-decls").remove(font)
# 14) remove rsid attributes
styles = root.findall(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}style")
for style in styles:
tp = style.find(".//{urn:oasis:names:tc:opendocument:xmlns:style:1.0}text-properties")
if tp is not None:
if "{http://openoffice.org/2009/office}rsid" in tp.attrib:
print("removing rsid from " + style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name"))
del tp.attrib["{http://openoffice.org/2009/office}rsid"]
if "{http://openoffice.org/2009/office}paragraph-rsid" in tp.attrib:
print("removing paragraph-rsid from " + style.get("{urn:oasis:names:tc:opendocument:xmlns:style:1.0}name"))
del tp.attrib["{http://openoffice.org/2009/office}paragraph-rsid"]
# remove office:settings
settings = root.find(".//{urn:oasis:names:tc:opendocument:xmlns:office:1.0}settings")
if settings is not None:
root.remove(settings)
# scripts are almost never needed
scripts = root.find(".//{urn:oasis:names:tc:opendocument:xmlns:office:1.0}scripts")
if scripts is not None:
root.remove(scripts)
# TODO: replace embedded image with some tiny one
# TODO: perhaps replace text with xxx (optionally)?
if __name__ == "__main__":
infile = sys.argv[1]
outfile = sys.argv[2]
dom = ET.parse(infile)
root = dom.getroot()
remove_unused(root)
# write output
dom.write(outfile, encoding='utf-8', xml_declaration=True)
"""
TODO
chart:style-name
-> chart
db:style-name
-> table-column, table
db:default-row-style-name
-> table-row
db:default-cell-style-name
-> cell
style:data-style-name
-> data style
presentation:presentation-page-layout-name
-> presentation-page-layout
style:page-layout-name
-> "page layout style" ?
style:percentage-data-style-name
-> data style
table:default-cell-style-name
-> cell
draw:stroke-dash-names
-> draw:stroke-dash
draw:fill-gradient-name
-> gradient
draw:fill-hatch-name
-> hatch
draw:fill-image-name
-> bitmap
draw:opacity-name
-> gradient
draw:stroke-dash
-> draw:stroke-dash
draw:marker-start
draw:marker-end
"""
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