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AZW3 Input: Fix a regression in calibre 5 that broke processing of files with inline flow replacements. Fixes #1906459 [Private bug](https://bugs.launchpad.net/calibre/+bug/1906459)

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Kovid Goyal 2020-12-02 06:09:43 +05:30
parent 7c5abc873e
commit a67fb90335
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1 changed files with 11 additions and 8 deletions
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19
src/calibre/ebooks/mobi/reader/markup.py
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@ -9,7 +9,6 @@ __docformat__ = 'restructuredtext en'
import re, os
from calibre.ebooks.chardet import strip_encoding_declarations
from polyglot.builtins import unicode_type, range
def update_internal_links(mobi8_reader, log):
@ -125,21 +124,25 @@ def update_flow_links(mobi8_reader, resource_map, log):
font_index_pattern = re.compile(r'''kindle:embed:([0-9|A-V]+)''', re.IGNORECASE)
url_css_index_pattern = re.compile(r'''kindle:flow:([0-9|A-V]+)\?mime=text/css[^\)]*''', re.IGNORECASE)
for flow in mr.flows:
if flow is None: # 0th flow is None
flows.append(flow)
continue
if not isinstance(flow, unicode_type):
def flow_as_unicode(flow):
if isinstance(flow, bytes):
try:
flow = flow.decode(mr.header.codec)
except UnicodeDecodeError:
log.error('Flow part has invalid %s encoded bytes'%mr.header.codec)
flow = flow.decode(mr.header.codec, 'replace')
return flow
for flow in mr.flows:
if flow is None: # 0th flow is None
flows.append(flow)
continue
flow = flow_as_unicode(flow)
# links to raster image files from image tags
# image_pattern
srcpieces = img_pattern.split(flow)
for j in range(1, len(srcpieces), 2):
tag = srcpieces[j]
if tag.startswith('<im') or tag.startswith('<svg:image'):
@ -208,7 +211,7 @@ def update_flow_links(mobi8_reader, resource_map, log):
tag = ''
else:
if fi.format == 'inline':
flowtext = mr.flows[num]
flowtext = flow_as_unicode(mr.flows[num])
tag = flowtext
else:
replacement = '"../' + fi.dir + '/' + fi.fname + '"'