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Fix #1653:

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- Fail gracefully on input with fragment-level broken links
This commit is contained in:
Marshall T. Vandegrift 2009-01-19 21:17:27 -05:00
parent 0f56822a07
commit d321b77930
1 changed files with 12 additions and 7 deletions
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19
src/calibre/ebooks/mobi/writer.py
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@ -95,6 +95,7 @@ class Serializer(object):
def __init__(self, oeb, images):
self.oeb = oeb
self.images = images
self.logger = oeb.logger
self.id_offsets = {}
self.href_offsets = defaultdict(list)
self.breaks = []
@ -144,8 +145,8 @@ def serialize_href(self, href, base=None):
item = hrefs[path] if path else None
if item and item.spine_position is None:
return False
id = item.id if item else base.id
href = '#'.join((id, frag)) if frag else id
path = item.href if item else base.href
href = '#'.join((path, frag)) if frag else path
buffer.write('filepos=')
self.href_offsets[href].append(buffer.tell())
buffer.write('0000000000')
@ -170,7 +171,7 @@ def serialize_item(self, item):
buffer = self.buffer
if not item.linear:
self.breaks.append(buffer.tell() - 1)
self.id_offsets[item.id] = buffer.tell()
self.id_offsets[item.href] = buffer.tell()
for elem in item.data.find(XHTML('body')):
self.serialize_elem(elem, item)
buffer.write('<mbp:pagebreak/>')
@ -183,8 +184,8 @@ def serialize_elem(self, elem, item, nsrmap=NSRMAP):
tag = prefixname(elem.tag, nsrmap)
for attr in ('name', 'id'):
if attr in elem.attrib:
id = '#'.join((item.id, elem.attrib[attr]))
self.id_offsets[id] = buffer.tell()
href = '#'.join((item.href, elem.attrib[attr]))
self.id_offsets[href] = buffer.tell()
del elem.attrib[attr]
if tag == 'a' and not elem.attrib \
and not len(elem) and not elem.text:
@ -232,8 +233,12 @@ def serialize_text(self, text, quot=False):
def fixup_links(self):
buffer = self.buffer
for id, hoffs in self.href_offsets.items():
ioff = self.id_offsets[id]
id_offsets = self.id_offsets
for href, hoffs in self.href_offsets.items():
if href not in id_offsets:
self.logger.warn('Hyperlink target %r not found' % href)
href, _ = urldefrag(href)
ioff = self.id_offsets[href]
for hoff in hoffs:
buffer.seek(hoff)
buffer.write('%010d' % ioff)