/usr/share/pyshared/odf/opendocument.py is in python-odf 0.9.6-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright (C) 2006-2010 Søren Roug, European Environment Agency
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
# Contributor(s):
#
__doc__="""Use OpenDocument to generate your documents."""
import zipfile, time, sys, mimetypes, copy
from cStringIO import StringIO
from namespaces import *
import manifest, meta
from office import *
import element
from attrconverters import make_NCName
from xml.sax.xmlreader import InputSource
from odfmanifest import manifestlist
__version__= TOOLSVERSION
_XMLPROLOGUE = u"<?xml version='1.0' encoding='UTF-8'?>\n"
UNIXPERMS = 0100644 << 16L # -rw-r--r--
IS_FILENAME = 0
IS_IMAGE = 1
# We need at least Python 2.2
assert sys.version_info[0]>=2 and sys.version_info[1] >= 2
#sys.setrecursionlimit(100)
#The recursion limit is set conservative so mistakes like
# s=content() s.addElement(s) won't eat up too much processor time.
odmimetypes = {
'application/vnd.oasis.opendocument.text': '.odt',
'application/vnd.oasis.opendocument.text-template': '.ott',
'application/vnd.oasis.opendocument.graphics': '.odg',
'application/vnd.oasis.opendocument.graphics-template': '.otg',
'application/vnd.oasis.opendocument.presentation': '.odp',
'application/vnd.oasis.opendocument.presentation-template': '.otp',
'application/vnd.oasis.opendocument.spreadsheet': '.ods',
'application/vnd.oasis.opendocument.spreadsheet-template': '.ots',
'application/vnd.oasis.opendocument.chart': '.odc',
'application/vnd.oasis.opendocument.chart-template': '.otc',
'application/vnd.oasis.opendocument.image': '.odi',
'application/vnd.oasis.opendocument.image-template': '.oti',
'application/vnd.oasis.opendocument.formula': '.odf',
'application/vnd.oasis.opendocument.formula-template': '.otf',
'application/vnd.oasis.opendocument.text-master': '.odm',
'application/vnd.oasis.opendocument.text-web': '.oth',
}
class OpaqueObject:
def __init__(self, filename, mediatype, content=None):
self.mediatype = mediatype
self.filename = filename
self.content = content
class OpenDocument:
""" A class to hold the content of an OpenDocument document
Use the xml method to write the XML
source to the screen or to a file
d = OpenDocument(mimetype)
fd.write(d.xml())
"""
thumbnail = None
def __init__(self, mimetype, add_generator=True):
self.mimetype = mimetype
self.childobjects = []
self._extra = []
self.folder = "" # Always empty for toplevel documents
self.topnode = Document(mimetype=self.mimetype)
self.topnode.ownerDocument = self
self.clear_caches()
self.Pictures = {}
self.meta = Meta()
self.topnode.addElement(self.meta)
if add_generator:
self.meta.addElement(meta.Generator(text=TOOLSVERSION))
self.scripts = Scripts()
self.topnode.addElement(self.scripts)
self.fontfacedecls = FontFaceDecls()
self.topnode.addElement(self.fontfacedecls)
self.settings = Settings()
self.topnode.addElement(self.settings)
self.styles = Styles()
self.topnode.addElement(self.styles)
self.automaticstyles = AutomaticStyles()
self.topnode.addElement(self.automaticstyles)
self.masterstyles = MasterStyles()
self.topnode.addElement(self.masterstyles)
self.body = Body()
self.topnode.addElement(self.body)
def rebuild_caches(self, node=None):
if node is None: node = self.topnode
self.build_caches(node)
for e in node.childNodes:
if e.nodeType == element.Node.ELEMENT_NODE:
self.rebuild_caches(e)
def clear_caches(self):
self.element_dict = {}
self._styles_dict = {}
self._styles_ooo_fix = {}
def build_caches(self, element):
""" Called from element.py
"""
if not self.element_dict.has_key(element.qname):
self.element_dict[element.qname] = []
self.element_dict[element.qname].append(element)
if element.qname == (STYLENS, u'style'):
self.__register_stylename(element) # Add to style dictionary
styleref = element.getAttrNS(TEXTNS,u'style-name')
if styleref is not None and self._styles_ooo_fix.has_key(styleref):
element.setAttrNS(TEXTNS,u'style-name', self._styles_ooo_fix[styleref])
def __register_stylename(self, element):
''' Register a style. But there are three style dictionaries:
office:styles, office:automatic-styles and office:master-styles
Chapter 14
'''
name = element.getAttrNS(STYLENS, u'name')
if name is None:
return
if element.parentNode.qname in ((OFFICENS,u'styles'), (OFFICENS,u'automatic-styles')):
if self._styles_dict.has_key(name):
newname = 'M'+name # Rename style
self._styles_ooo_fix[name] = newname
# From here on all references to the old name will refer to the new one
name = newname
element.setAttrNS(STYLENS, u'name', name)
self._styles_dict[name] = element
def toXml(self, filename=''):
xml=StringIO()
xml.write(_XMLPROLOGUE)
self.body.toXml(0, xml)
if not filename:
return xml.getvalue()
else:
f=file(filename,'w')
f.write(xml.getvalue())
f.close()
def xml(self):
""" Generates the full document as an XML file
Always written as a bytestream in UTF-8 encoding
"""
self.__replaceGenerator()
xml=StringIO()
xml.write(_XMLPROLOGUE)
self.topnode.toXml(0, xml)
return xml.getvalue()
def contentxml(self):
""" Generates the content.xml file
Always written as a bytestream in UTF-8 encoding
"""
xml=StringIO()
xml.write(_XMLPROLOGUE)
x = DocumentContent()
x.write_open_tag(0, xml)
if self.scripts.hasChildNodes():
self.scripts.toXml(1, xml)
if self.fontfacedecls.hasChildNodes():
self.fontfacedecls.toXml(1, xml)
a = AutomaticStyles()
stylelist = self._used_auto_styles([self.styles, self.automaticstyles, self.body])
if len(stylelist) > 0:
a.write_open_tag(1, xml)
for s in stylelist:
s.toXml(2, xml)
a.write_close_tag(1, xml)
else:
a.toXml(1, xml)
self.body.toXml(1, xml)
x.write_close_tag(0, xml)
return xml.getvalue()
def __manifestxml(self):
""" Generates the manifest.xml file
The self.manifest isn't avaible unless the document is being saved
"""
xml=StringIO()
xml.write(_XMLPROLOGUE)
self.manifest.toXml(0,xml)
return xml.getvalue()
def metaxml(self):
""" Generates the meta.xml file """
self.__replaceGenerator()
x = DocumentMeta()
x.addElement(self.meta)
xml=StringIO()
xml.write(_XMLPROLOGUE)
x.toXml(0,xml)
return xml.getvalue()
def settingsxml(self):
""" Generates the settings.xml file """
x = DocumentSettings()
x.addElement(self.settings)
xml=StringIO()
xml.write(_XMLPROLOGUE)
x.toXml(0,xml)
return xml.getvalue()
def _parseoneelement(self, top, stylenamelist):
""" Finds references to style objects in master-styles
and add the style name to the style list if not already there.
Recursive
"""
for e in top.childNodes:
if e.nodeType == element.Node.ELEMENT_NODE:
for styleref in (
(CHARTNS,u'style-name'),
(DRAWNS,u'style-name'),
(DRAWNS,u'text-style-name'),
(PRESENTATIONNS,u'style-name'),
(STYLENS,u'data-style-name'),
(STYLENS,u'list-style-name'),
(STYLENS,u'page-layout-name'),
(STYLENS,u'style-name'),
(TABLENS,u'default-cell-style-name'),
(TABLENS,u'style-name'),
(TEXTNS,u'style-name') ):
if e.getAttrNS(styleref[0],styleref[1]):
stylename = e.getAttrNS(styleref[0],styleref[1])
if stylename not in stylenamelist:
stylenamelist.append(stylename)
stylenamelist = self._parseoneelement(e, stylenamelist)
return stylenamelist
def _used_auto_styles(self, segments):
""" Loop through the masterstyles elements, and find the automatic
styles that are used. These will be added to the automatic-styles
element in styles.xml
"""
stylenamelist = []
for top in segments:
stylenamelist = self._parseoneelement(top, stylenamelist)
stylelist = []
for e in self.automaticstyles.childNodes:
if e.getAttrNS(STYLENS,u'name') in stylenamelist:
stylelist.append(e)
return stylelist
def stylesxml(self):
""" Generates the styles.xml file """
xml=StringIO()
xml.write(_XMLPROLOGUE)
x = DocumentStyles()
x.write_open_tag(0, xml)
if self.fontfacedecls.hasChildNodes():
self.fontfacedecls.toXml(1, xml)
self.styles.toXml(1, xml)
a = AutomaticStyles()
a.write_open_tag(1, xml)
for s in self._used_auto_styles([self.masterstyles]):
s.toXml(2, xml)
a.write_close_tag(1, xml)
if self.masterstyles.hasChildNodes():
self.masterstyles.toXml(1, xml)
x.write_close_tag(0, xml)
return xml.getvalue()
def addPicture(self, filename, mediatype=None, content=None):
""" Add a picture
It uses the same convention as OOo, in that it saves the picture in
the zipfile in the subdirectory 'Pictures'
If passed a file ptr, mediatype must be set
"""
if content is None:
if mediatype is None:
mediatype, encoding = mimetypes.guess_type(filename)
if mediatype is None:
mediatype = ''
try: ext = filename[filename.rindex('.'):]
except: ext=''
else:
ext = mimetypes.guess_extension(mediatype)
manifestfn = "Pictures/%0.0f%s" % ((time.time()*10000000000), ext)
self.Pictures[manifestfn] = (IS_FILENAME, filename, mediatype)
else:
manifestfn = filename
self.Pictures[manifestfn] = (IS_IMAGE, content, mediatype)
return manifestfn
def addPictureFromFile(self, filename, mediatype=None):
""" Add a picture
It uses the same convention as OOo, in that it saves the picture in
the zipfile in the subdirectory 'Pictures'.
If mediatype is not given, it will be guessed from the filename
extension.
"""
if mediatype is None:
mediatype, encoding = mimetypes.guess_type(filename)
if mediatype is None:
mediatype = ''
try: ext = filename[filename.rindex('.'):]
except ValueError: ext=''
else:
ext = mimetypes.guess_extension(mediatype)
manifestfn = "Pictures/%0.0f%s" % ((time.time()*10000000000), ext)
self.Pictures[manifestfn] = (IS_FILENAME, filename, mediatype)
return manifestfn
def addPictureFromString(self, content, mediatype):
""" Add a picture
It uses the same convention as OOo, in that it saves the picture in
the zipfile in the subdirectory 'Pictures'. The content variable
is a string that contains the binary image data. The mediatype
indicates the image format.
"""
ext = mimetypes.guess_extension(mediatype)
manifestfn = "Pictures/%0.0f%s" % ((time.time()*10000000000), ext)
self.Pictures[manifestfn] = (IS_IMAGE, content, mediatype)
return manifestfn
def addThumbnail(self, filecontent=None):
""" Add a fixed thumbnail
The thumbnail in the library is big, so this is pretty useless.
"""
if filecontent is None:
import thumbnail
self.thumbnail = thumbnail.thumbnail()
else:
self.thumbnail = filecontent
def addObject(self, document, objectname=None):
""" Adds an object (subdocument). The object must be an OpenDocument class
The return value will be the folder in the zipfile the object is stored in
"""
self.childobjects.append(document)
if objectname is None:
document.folder = "%s/Object %d" % (self.folder, len(self.childobjects))
else:
document.folder = objectname
return ".%s" % document.folder
def _savePictures(self, object, folder):
hasPictures = False
for arcname, picturerec in object.Pictures.items():
what_it_is, fileobj, mediatype = picturerec
self.manifest.addElement(manifest.FileEntry(fullpath="%s%s" % ( folder ,arcname), mediatype=mediatype))
hasPictures = True
if what_it_is == IS_FILENAME:
self._z.write(fileobj, arcname, zipfile.ZIP_STORED)
else:
zi = zipfile.ZipInfo(str(arcname), self._now)
zi.compress_type = zipfile.ZIP_STORED
zi.external_attr = UNIXPERMS
self._z.writestr(zi, fileobj)
# According to section 17.7.3 in ODF 1.1, the pictures folder should not have a manifest entry
# if hasPictures:
# self.manifest.addElement(manifest.FileEntry(fullpath="%sPictures/" % folder, mediatype=""))
# Look in subobjects
subobjectnum = 1
for subobject in object.childobjects:
self._savePictures(subobject,'%sObject %d/' % (folder, subobjectnum))
subobjectnum += 1
def __replaceGenerator(self):
""" Section 3.1.1: The application MUST NOT export the original identifier
belonging to the application that created the document.
"""
for m in self.meta.childNodes[:]:
if m.qname == (METANS, u'generator'):
self.meta.removeChild(m)
self.meta.addElement(meta.Generator(text=TOOLSVERSION))
def save(self, outputfile, addsuffix=False):
""" Save the document under the filename.
If the filename is '-' then save to stdout
"""
if outputfile == '-':
outputfp = zipfile.ZipFile(sys.stdout,"w")
else:
if addsuffix:
outputfile = outputfile + odmimetypes.get(self.mimetype,'.xxx')
outputfp = zipfile.ZipFile(outputfile, "w")
self.__zipwrite(outputfp)
outputfp.close()
def write(self, outputfp):
""" User API to write the ODF file to an open file descriptor
Writes the ZIP format
"""
zipoutputfp = zipfile.ZipFile(outputfp,"w")
self.__zipwrite(zipoutputfp)
def __zipwrite(self, outputfp):
""" Write the document to an open file pointer
This is where the real work is done
"""
self._z = outputfp
self._now = time.localtime()[:6]
self.manifest = manifest.Manifest()
# Write mimetype
zi = zipfile.ZipInfo('mimetype', self._now)
zi.compress_type = zipfile.ZIP_STORED
zi.external_attr = UNIXPERMS
self._z.writestr(zi, self.mimetype)
self._saveXmlObjects(self,"")
# Write pictures
self._savePictures(self,"")
# Write the thumbnail
if self.thumbnail is not None:
self.manifest.addElement(manifest.FileEntry(fullpath="Thumbnails/", mediatype=''))
self.manifest.addElement(manifest.FileEntry(fullpath="Thumbnails/thumbnail.png", mediatype=''))
zi = zipfile.ZipInfo("Thumbnails/thumbnail.png", self._now)
zi.compress_type = zipfile.ZIP_DEFLATED
zi.external_attr = UNIXPERMS
self._z.writestr(zi, self.thumbnail)
# Write any extra files
for op in self._extra:
if op.filename == "META-INF/documentsignatures.xml": continue # Don't save signatures
self.manifest.addElement(manifest.FileEntry(fullpath=op.filename, mediatype=op.mediatype))
zi = zipfile.ZipInfo(op.filename.encode('utf-8'), self._now)
zi.compress_type = zipfile.ZIP_DEFLATED
zi.external_attr = UNIXPERMS
if op.content is not None:
self._z.writestr(zi, op.content)
# Write manifest
zi = zipfile.ZipInfo("META-INF/manifest.xml", self._now)
zi.compress_type = zipfile.ZIP_DEFLATED
zi.external_attr = UNIXPERMS
self._z.writestr(zi, self.__manifestxml() )
del self._z
del self._now
del self.manifest
def _saveXmlObjects(self, object, folder):
if self == object:
self.manifest.addElement(manifest.FileEntry(fullpath="/", mediatype=object.mimetype))
else:
self.manifest.addElement(manifest.FileEntry(fullpath=folder, mediatype=object.mimetype))
# Write styles
self.manifest.addElement(manifest.FileEntry(fullpath="%sstyles.xml" % folder, mediatype="text/xml"))
zi = zipfile.ZipInfo("%sstyles.xml" % folder, self._now)
zi.compress_type = zipfile.ZIP_DEFLATED
zi.external_attr = UNIXPERMS
self._z.writestr(zi, object.stylesxml() )
# Write content
self.manifest.addElement(manifest.FileEntry(fullpath="%scontent.xml" % folder, mediatype="text/xml"))
zi = zipfile.ZipInfo("%scontent.xml" % folder, self._now)
zi.compress_type = zipfile.ZIP_DEFLATED
zi.external_attr = UNIXPERMS
self._z.writestr(zi, object.contentxml() )
# Write settings
if object.settings.hasChildNodes():
self.manifest.addElement(manifest.FileEntry(fullpath="%ssettings.xml" % folder, mediatype="text/xml"))
zi = zipfile.ZipInfo("%ssettings.xml" % folder, self._now)
zi.compress_type = zipfile.ZIP_DEFLATED
zi.external_attr = UNIXPERMS
self._z.writestr(zi, object.settingsxml() )
# Write meta
if self == object:
self.manifest.addElement(manifest.FileEntry(fullpath="meta.xml", mediatype="text/xml"))
zi = zipfile.ZipInfo("meta.xml", self._now)
zi.compress_type = zipfile.ZIP_DEFLATED
zi.external_attr = UNIXPERMS
self._z.writestr(zi, object.metaxml() )
# Write subobjects
subobjectnum = 1
for subobject in object.childobjects:
self._saveXmlObjects(subobject, '%sObject %d/' % (folder, subobjectnum))
subobjectnum += 1
# Document's DOM methods
def createElement(self, element):
""" Inconvenient interface to create an element, but follows XML-DOM.
Does not allow attributes as argument, therefore can't check grammar.
"""
return element(check_grammar=False)
def createTextNode(self, data):
""" Method to create a text node """
return element.Text(data)
def createCDATASection(self, data):
""" Method to create a CDATA section """
return element.CDATASection(cdata)
def getMediaType(self):
""" Returns the media type """
return self.mimetype
def getStyleByName(self, name):
""" Finds a style object based on the name """
ncname = make_NCName(name)
if self._styles_dict == {}:
self.rebuild_caches()
return self._styles_dict.get(ncname, None)
def getElementsByType(self, element):
""" Gets elements based on the type, which is function from text.py, draw.py etc. """
obj = element(check_grammar=False)
if self.element_dict == {}:
self.rebuild_caches()
return self.element_dict.get(obj.qname, [])
# Convenience functions
def OpenDocumentChart():
""" Creates a chart document """
doc = OpenDocument('application/vnd.oasis.opendocument.chart')
doc.chart = Chart()
doc.body.addElement(doc.chart)
return doc
def OpenDocumentDrawing():
""" Creates a drawing document """
doc = OpenDocument('application/vnd.oasis.opendocument.graphics')
doc.drawing = Drawing()
doc.body.addElement(doc.drawing)
return doc
def OpenDocumentImage():
""" Creates an image document """
doc = OpenDocument('application/vnd.oasis.opendocument.image')
doc.image = Image()
doc.body.addElement(doc.image)
return doc
def OpenDocumentPresentation():
""" Creates a presentation document """
doc = OpenDocument('application/vnd.oasis.opendocument.presentation')
doc.presentation = Presentation()
doc.body.addElement(doc.presentation)
return doc
def OpenDocumentSpreadsheet():
""" Creates a spreadsheet document """
doc = OpenDocument('application/vnd.oasis.opendocument.spreadsheet')
doc.spreadsheet = Spreadsheet()
doc.body.addElement(doc.spreadsheet)
return doc
def OpenDocumentText():
""" Creates a text document """
doc = OpenDocument('application/vnd.oasis.opendocument.text')
doc.text = Text()
doc.body.addElement(doc.text)
return doc
def OpenDocumentTextMaster():
""" Creates a text master document """
doc = OpenDocument('application/vnd.oasis.opendocument.text-master')
doc.text = Text()
doc.body.addElement(doc.text)
return doc
def __loadxmlparts(z, manifest, doc, objectpath):
from load import LoadParser
from xml.sax import make_parser, handler
for xmlfile in (objectpath+'settings.xml', objectpath+'meta.xml', objectpath+'content.xml', objectpath+'styles.xml'):
if not manifest.has_key(xmlfile):
continue
try:
xmlpart = z.read(xmlfile)
doc._parsing = xmlfile
parser = make_parser()
parser.setFeature(handler.feature_namespaces, 1)
parser.setContentHandler(LoadParser(doc))
parser.setErrorHandler(handler.ErrorHandler())
inpsrc = InputSource()
inpsrc.setByteStream(StringIO(xmlpart))
parser.parse(inpsrc)
del doc._parsing
except KeyError, v: pass
def load(odffile):
""" Load an ODF file into memory
Returns a reference to the structure
"""
z = zipfile.ZipFile(odffile)
mimetype = z.read('mimetype')
doc = OpenDocument(mimetype, add_generator=False)
# Look in the manifest file to see if which of the four files there are
manifestpart = z.read('META-INF/manifest.xml')
manifest = manifestlist(manifestpart)
__loadxmlparts(z, manifest, doc, '')
for mentry,mvalue in manifest.items():
if mentry[:9] == "Pictures/" and len(mentry) > 9:
doc.addPicture(mvalue['full-path'], mvalue['media-type'], z.read(mentry))
elif mentry == "Thumbnails/thumbnail.png":
doc.addThumbnail(z.read(mentry))
elif mentry in ('settings.xml', 'meta.xml', 'content.xml', 'styles.xml'):
pass
# Load subobjects into structure
elif mentry[:7] == "Object " and len(mentry) < 11 and mentry[-1] == "/":
subdoc = OpenDocument(mvalue['media-type'], add_generator=False)
doc.addObject(subdoc, "/" + mentry[:-1])
__loadxmlparts(z, manifest, subdoc, mentry)
elif mentry[:7] == "Object ":
pass # Don't load subobjects as opaque objects
else:
if mvalue['full-path'][-1] == '/':
doc._extra.append(OpaqueObject(mvalue['full-path'], mvalue['media-type'], None))
else:
doc._extra.append(OpaqueObject(mvalue['full-path'], mvalue['media-type'], z.read(mentry)))
# Add the SUN junk here to the struct somewhere
# It is cached data, so it can be out-of-date
z.close()
b = doc.getElementsByType(Body)
if mimetype[:39] == 'application/vnd.oasis.opendocument.text':
doc.text = b[0].firstChild
elif mimetype[:43] == 'application/vnd.oasis.opendocument.graphics':
doc.graphics = b[0].firstChild
elif mimetype[:47] == 'application/vnd.oasis.opendocument.presentation':
doc.presentation = b[0].firstChild
elif mimetype[:46] == 'application/vnd.oasis.opendocument.spreadsheet':
doc.spreadsheet = b[0].firstChild
elif mimetype[:40] == 'application/vnd.oasis.opendocument.chart':
doc.chart = b[0].firstChild
elif mimetype[:40] == 'application/vnd.oasis.opendocument.image':
doc.image = b[0].firstChild
elif mimetype[:42] == 'application/vnd.oasis.opendocument.formula':
doc.formula = b[0].firstChild
return doc
# vim: set expandtab sw=4 :
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