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Edit Book: Fix extra 1x1 unused GIF image being created when saving and re-opening AZW3 files. Fixes #1272410 [Editing AZW3 book adds 1x1 pixel gray gif each time](https://bugs.launchpad.net/calibre/+bug/1272410)

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This commit is contained in:
Kovid Goyal 2014-01-25 09:52:36 +05:30
parent a36aa7dab9
commit a9b3adbad3
2 changed files with 4 additions and 1 deletions
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3
src/calibre/ebooks/mobi/reader/mobi8.py
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@ -386,6 +386,7 @@ class Mobi8Reader(object):
return build_toc(index_entries)
def extract_resources(self):
from calibre.ebooks.mobi.writer2.resources import PLACEHOLDER_GIF
resource_map = []
for x in ('fonts', 'images'):
os.mkdir(x)
@ -414,6 +415,8 @@ class Mobi8Reader(object):
if font['encrypted']:
self.encrypted_fonts.append(href)
else:
if len(data) == len(PLACEHOLDER_GIF) and data == PLACEHOLDER_GIF:
continue
imgtype = what(None, data)
if imgtype is None:
from calibre.utils.magick.draw import identify_data

2
src/calibre/ebooks/mobi/writer2/resources.py
View File

@ -14,7 +14,7 @@ from calibre.ebooks import generate_masthead
from calibre.ebooks.oeb.base import OEB_RASTER_IMAGES
from calibre.utils.imghdr import what
PLACEHOLDER_GIF = b'GIF89a\x01\x00\x01\x00\x80\x00\x00\x00\x00\x00\xff\xff\xff!\xf9\x04\x01\x00\x00\x00\x00,\x00\x00\x00\x00\x01\x00\x01\x00@\x02\x01D\x00;'
PLACEHOLDER_GIF = b'GIF89a\x01\x00\x01\x00\xf0\x00\x00\x00\x00\x00\xff\xff\xff!\xf9\x04\x01\x00\x00\x00\x00!\xfe calibre-placeholder-gif-for-azw3\x00,\x00\x00\x00\x00\x01\x00\x01\x00\x00\x02\x02D\x01\x00;' # noqa
class Resources(object):