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Nicer error message when writing the thumbnail width to the cache fails

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Kovid Goyal 2015-01-25 06:36:05 +05:30
parent 40714d02c5
commit 452bb19df1
1 changed files with 8 additions and 4 deletions
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12
src/calibre/library/catalogs/epub_mobi_builder.py
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@ -7,8 +7,8 @@ import datetime, os, platform, re, shutil, time, unicodedata, zlib
from copy import deepcopy
from xml.sax.saxutils import escape
from calibre import (prepare_string_for_xml, strftime, force_unicode,
isbytestring, replace_entities)
from calibre import (
prepare_string_for_xml, strftime, force_unicode, isbytestring, replace_entities, as_unicode)
from calibre.constants import isosx, cache_dir
from calibre.customize.conversion import DummyReporter
from calibre.customize.ui import output_profiles
@ -4442,8 +4442,12 @@ class CatalogBuilder(object):
# Write thumb_width to the file, validating cache contents
# Allows detection of aborted catalog builds
with ZipFile(self.thumbs_path, mode='a') as zfw:
zfw.writestr('thumb_width', self.opts.thumb_width)
try:
with ZipFile(self.thumbs_path, mode='a') as zfw:
zfw.writestr('thumb_width', self.opts.thumb_width)
except Exception as err:
raise ValueError('There was an error writing to the thumbnail cache: %s\n'
'Try deleting it. Underlying error: %s' % (force_unicode(self.thumbs_path), as_unicode(err)))
self.thumbs = thumbs