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When backing up metadata. automatically remove XML invalid chars, instead of erroring out

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This commit is contained in:
Kovid Goyal 2013-05-23 09:31:47 +05:30
parent 83810d655d
commit 621c641396
2 changed files with 13 additions and 8 deletions
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7
src/calibre/ebooks/metadata/opf2.py
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@ -21,7 +21,7 @@ from calibre.ebooks.metadata.book.base import Metadata
from calibre.utils.date import parse_date, isoformat
from calibre.utils.localization import get_lang, canonicalize_lang
from calibre import prints, guess_type
from calibre.utils.cleantext import clean_ascii_chars
from calibre.utils.cleantext import clean_ascii_chars, clean_xml_chars
from calibre.utils.config import tweaks
class Resource(object): # {{{
@ -1436,7 +1436,10 @@ def metadata_to_opf(mi, as_string=True, default_lang=None):
attrib['name'] = name
if content:
attrib['content'] = content
elem = metadata.makeelement(tag, attrib=attrib)
try:
elem = metadata.makeelement(tag, attrib=attrib)
except ValueError:
elem = metadata.makeelement(tag, attrib={k:clean_xml_chars(v) for k, v in attrib.iteritems()})
elem.tail = '\n'+(' '*8)
if text:
try:

14
src/calibre/utils/cleantext.py
View File

@ -28,13 +28,14 @@ def clean_ascii_chars(txt, charlist=None):
pat = re.compile(u'|'.join(map(unichr, charlist)))
return pat.sub('', txt)
def allowed(x):
x = ord(x)
return (x != 127 and (31 < x < 0xd7ff or x in (9, 10, 13))) or (0xe000 < x < 0xfffd) or (0x10000 < x < 0x10ffff)
def clean_xml_chars(unicode_string):
def allowed(x):
x = ord(x)
return (0x0001 < x < 0xd7ff) or (0xe000 < x < 0xfffd) or (0x10000 < x < 0x10ffff)
return u''.join(filter(allowed, unicode_string))
##
# Fredrik Lundh: http://effbot.org/zone/re-sub.htm#unescape-html
# Removes HTML or XML character references and entities from a text string.
#
@ -60,6 +61,7 @@ def unescape(text, rm=False, rchar=u''):
except KeyError:
pass
if rm:
return rchar #replace by char
return text # leave as is
return rchar # replace by char
return text # leave as is
return re.sub("&#?\w+;", fixup, text)