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Conversion: Ignore invalid chapter detection and level n ToC expressions instead of erroring out

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This commit is contained in:
Kovid Goyal 2012-07-25 10:14:40 +05:30
parent 9180cf7d9a
commit 2aa4f7c70b
1 changed files with 21 additions and 5 deletions
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26
src/calibre/ebooks/oeb/transforms/structure.py
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@ -82,10 +82,17 @@ class DetectStructure(object):
def detect_chapters(self):
self.detected_chapters = []
def find_matches(expr, doc):
try:
return XPath(expr)(doc)
except:
self.log.warn('Invalid chapter expression, ignoring: %s'%expr)
return []
if self.opts.chapter:
chapter_xpath = XPath(self.opts.chapter)
for item in self.oeb.spine:
for x in chapter_xpath(item.data):
for x in find_matches(self.opts.chapter, item.data):
self.detected_chapters.append((item, x))
chapter_mark = self.opts.chapter_mark
@ -164,11 +171,19 @@ class DetectStructure(object):
added = OrderedDict()
added2 = OrderedDict()
counter = 1
def find_matches(expr, doc):
try:
return XPath(expr)(doc)
except:
self.log.warn('Invalid ToC expression, ignoring: %s'%expr)
return []
for document in self.oeb.spine:
previous_level1 = list(added.itervalues())[-1] if added else None
previous_level2 = list(added2.itervalues())[-1] if added2 else None
for elem in XPath(self.opts.level1_toc)(document.data):
for elem in find_matches(self.opts.level1_toc, document.data):
text, _href = self.elem_to_link(document, elem, counter)
counter += 1
if text:
@ -178,7 +193,7 @@ class DetectStructure(object):
#node.add(_('Top'), _href)
if self.opts.level2_toc is not None and added:
for elem in XPath(self.opts.level2_toc)(document.data):
for elem in find_matches(self.opts.level2_toc, document.data):
level1 = None
for item in document.data.iterdescendants():
if item in added:
@ -196,7 +211,8 @@ class DetectStructure(object):
break
if self.opts.level3_toc is not None and added2:
for elem in XPath(self.opts.level3_toc)(document.data):
for elem in find_matches(self.opts.level3_toc,
document.data):
level2 = None
for item in document.data.iterdescendants():
if item in added2: