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Fix #908 (Error message when converting LIT file)

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Kovid Goyal 2008-07-25 16:30:54 -07:00
commit 4f4af05fa2
1 changed files with 17 additions and 5 deletions
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22
src/calibre/ebooks/lit/reader.py
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@ -92,7 +92,11 @@ def read_utf8_char(bytes, pos):
'Invalid UTF8 character: %s' % repr(bytes[pos:pos+i]))
c = (c << 6) | (b & 0x3F)
return unichr(c), pos+elsize
def consume_utf8_length(bytes):
char, elsize = read_utf8_char(bytes, 0)
return ord(char), bytes[elsize:]
class UnBinary(object):
AMPERSAND_RE = re.compile(
r'&(?!(?:#[0-9]+|#x[0-9a-fA-F]+|[a-zA-Z_:][a-zA-Z0-9.-_:]+);)')
@ -315,8 +319,11 @@ class ManifestItem(object):
self.offset = offset
self.root = root
self.state = state
# Some LIT files have Windows-style paths
path = original.replace('\\', '/')
if path[1:3] == ':/': path = path[2:]
# Some paths in Fictionwise "multiformat" LIT files contain '..' (!?)
path = os.path.normpath(original).replace('\\', '/')
path = os.path.normpath(path).replace('\\', '/')
while path.startswith('../'): path = path[3:]
self.path = path
@ -557,14 +564,15 @@ class LitReader(object):
if len(raw) < 5:
raise LitError('Truncated manifest')
offset, raw = u32(raw), raw[4:]
slen, raw = ord(raw[0]), raw[1:]
slen, raw = consume_utf8_length(raw)
internal, raw = raw[:slen].decode('utf8'), raw[slen:]
slen, raw = ord(raw[0]), raw[1:]
slen, raw = consume_utf8_length(raw)
original, raw = raw[:slen].decode('utf8'), raw[slen:]
slen, raw = ord(raw[0]), raw[1:]
slen, raw = consume_utf8_length(raw)
mime_type, raw = raw[:slen].decode('utf8'), raw[slen+1:]
self.manifest[internal] = ManifestItem(
original, internal, mime_type, offset, root, state)
# Remove any common path elements
mlist = self.manifest.values()
shared = mlist[0].path
for item in mlist[1:]:
@ -578,6 +586,10 @@ class LitReader(object):
slen = len(shared)
for item in mlist:
item.path = item.path[slen:]
# Fix any straggling absolute paths
for item in mlist:
if item.path[0] == '/':
item.path = os.path.basename(item.path)
def _read_meta(self):
raw = self.get_file('/meta')