def read_cover(stream, zin, mi, opfmeta, extract_cover):
# search for an draw:image in a draw:frame with the name 'opf.cover'
# if opf.metadata prop is false, just use the first image that
# has a proper size (borrowed from docx)
otext = odLoad(stream)
cover_href = None
cover_data = None
cover_frame = None
imgnum = 0
for frm in otext.topnode.getElementsByType(odFrame):
img = frm.getElementsByType(odImage)
if len(img) == 0:
continue
i_href = img[0].getAttribute('href')
try:
raw = zin.read(i_href)
except KeyError:
continue
try:
width, height, fmt = identify_data(raw)
except:
continue
imgnum += 1
if opfmeta and frm.getAttribute('name').lower() == u'opf.cover':
cover_href = i_href
cover_data = (fmt, raw)
cover_frame = frm.getAttribute('name') # could have upper case
break
if cover_href is None and imgnum == 1 and 0.8 <= height/width <= 1.8 and height*width >= 12000:
# Pick the first image as the cover if it is of a suitable size
cover_href = i_href
cover_data = (fmt, raw)
if not opfmeta:
break
if cover_href is not None:
mi.cover = cover_href
mi.odf_cover_frame = cover_frame
if extract_cover:
if not cover_data:
raw = zin.read(cover_href)
try:
width, height, fmt = identify_data(raw)
except:
pass
else:
cover_data = (fmt, raw)
mi.cover_data = cover_data
def read_cover(stream, zin, mi, opfmeta, extract_cover):
# search for an draw:image in a draw:frame with the name 'opf.cover'
# if opf.metadata prop is false, just use the first image that
# has a proper size (borrowed from docx)
otext = odLoad(stream)
cover_href = None
cover_data = None
cover_frame = None
imgnum = 0
for frm in otext.topnode.getElementsByType(odFrame):
img = frm.getElementsByType(odImage)
if len(img) == 0:
continue
i_href = img[0].getAttribute('href')
try:
raw = zin.read(i_href)
except KeyError:
continue
try:
fmt, width, height = identify(bytes(raw))
except Exception:
continue
imgnum += 1
if opfmeta and frm.getAttribute('name').lower() == u'opf.cover':
cover_href = i_href
cover_data = (fmt, raw)
cover_frame = frm.getAttribute('name') # could have upper case
break
if cover_href is None and imgnum == 1 and 0.8 <= height / width <= 1.8 and height * width >= 12000:
# Pick the first image as the cover if it is of a suitable size
cover_href = i_href
cover_data = (fmt, raw)
if not opfmeta:
break
if cover_href is not None:
mi.cover = cover_href
mi.odf_cover_frame = cover_frame
if extract_cover:
if not cover_data:
raw = zin.read(cover_href)
try:
fmt = identify(bytes(raw))[0]
except Exception:
pass
else:
cover_data = (fmt, raw)
mi.cover_data = cover_data
def filter_load(self, odffile, mi, log):
""" This is an adaption from ODF2XHTML. It adds a step between
load and parse of the document where the Element tree can be
modified.
"""
# first load the odf structure
self.lines = []
self._wfunc = self._wlines
if isinstance(odffile, string_or_bytes) \
or hasattr(odffile, 'read'): # Added by Kovid
self.document = odLoad(odffile)
else:
self.document = odffile
# filter stuff
self.search_page_img(mi, log)
try:
self.filter_cover(mi, log)
except:
pass
# parse the modified tree and generate xhtml
self._walknode(self.document.topnode)
def filter_load(self, odffile, mi, log):
""" This is an adaption from ODF2XHTML. It adds a step between
load and parse of the document where the Element tree can be
modified.
"""
# first load the odf structure
self.lines = []
self._wfunc = self._wlines
if isinstance(odffile, basestring) \
or hasattr(odffile, 'read'): # Added by Kovid
self.document = odLoad(odffile)
else:
self.document = odffile
# filter stuff
self.search_page_img(mi, log)
try:
self.filter_cover(mi, log)
except:
pass
# parse the modified tree and generate xhtml
self._walknode(self.document.topnode)
