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Fix explicitly closed <meta charset> tags causing strip_encoding_declarations to result in invalid XML

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This commit is contained in:
Kovid Goyal 2014-01-31 21:24:39 +05:30
parent e35586fd00
commit 84a1eb96fa
1 changed files with 10 additions and 14 deletions
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24
src/calibre/ebooks/chardet.py
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@ -10,16 +10,13 @@ __docformat__ = 'restructuredtext en'
import re, codecs
ENCODING_PATS = [
# XML declaration
re.compile(r'<\?[^<>]+encoding\s*=\s*[\'"](.*?)[\'"][^<>]*>',
re.IGNORECASE),
# HTML 4 Pragma directive
re.compile(r'''<meta\s+?[^<>]*?content\s*=\s*['"][^'"]*?charset=([-_a-z0-9]+)[^'"]*?['"][^<>]*>''',
re.IGNORECASE),
# HTML 5 charset
re.compile(r'''<meta\s+charset=['"]([-_a-z0-9]+)['"][^<>]*>''',
re.IGNORECASE),
]
# XML declaration
re.compile(r'<\?[^<>]+encoding\s*=\s*[\'"](.*?)[\'"][^<>]*>', re.IGNORECASE),
# HTML 4 Pragma directive
re.compile(r'''<meta\s+?[^<>]*?content\s*=\s*['"][^'"]*?charset=([-_a-z0-9]+)[^'"]*?['"][^<>]*>(?:\s*</meta>){0,1}''', re.IGNORECASE),
# HTML 5 charset
re.compile(r'''<meta\s+charset=['"]([-_a-z0-9]+)['"][^<>]*>(?:\s*</meta>){0,1}''', re.IGNORECASE),
]
ENTITY_PATTERN = re.compile(r'&(\S+?);')
def strip_encoding_declarations(raw):
@ -35,8 +32,8 @@ def substitute_entites(raw):
from calibre import xml_entity_to_unicode
return ENTITY_PATTERN.sub(xml_entity_to_unicode, raw)
_CHARSET_ALIASES = { "macintosh" : "mac-roman",
"x-sjis" : "shift-jis" }
_CHARSET_ALIASES = {"macintosh" : "mac-roman",
"x-sjis" : "shift-jis"}
def detect(*args, **kwargs):
from chardet import detect
@ -58,8 +55,7 @@ def force_encoding(raw, verbose, assume_utf8=False):
if not encoding:
encoding = preferred_encoding
encoding = encoding.lower()
if _CHARSET_ALIASES.has_key(encoding):
encoding = _CHARSET_ALIASES[encoding]
encoding = _CHARSET_ALIASES.get(encoding, encoding)
if encoding == 'ascii':
encoding = 'utf-8'
return encoding