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New MOBI output: Allow calibre to convert OEB documents with a toc.ncx conforming to the kindlegen periodical specification into periodicals

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This commit is contained in:
Kovid Goyal 2011-07-25 20:23:52 -06:00
parent 4270605335
commit 1297576ee2
1 changed files with 27 additions and 1 deletions
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28
src/calibre/ebooks/mobi/writer2/indexer.py
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@ -295,7 +295,9 @@ class Indexer(object): # {{{
self.log = oeb.log
self.opts = opts
self.is_periodical = opts.mobi_periodical
self.is_periodical = self.detect_periodical()
self.log('Generating MOBI index for a %s'%('periodical' if
self.is_periodical else 'book'))
self.is_flat_periodical = False
if opts.mobi_periodical:
periodical_node = iter(oeb.toc).next()
@ -317,6 +319,28 @@ class Indexer(object): # {{{
self.calculate_trailing_byte_sequences()
def detect_periodical(self): # {{{
for node in self.oeb.toc.iterdescendants():
if node.depth() == 1 and node.klass != 'article':
self.log.debug(
'Not a periodical: Deepest node does not have '
'class="article"')
return False
if node.depth() == 2 and node.klass != 'section':
self.log.debug(
'Not a periodical: Second deepest node does not have'
' class="section"')
return False
if node.depth() == 3 and node.klass != 'periodical':
self.log.debug('Not a periodical: Third deepest node'
' does not have class="periodical"')
return False
if node.depth() > 3:
self.log.debug('Not a periodical: Has nodes of depth > 3')
return False
return True
# }}}
def create_index_record(self): # {{{
header_length = 192
buf = StringIO()
@ -630,6 +654,7 @@ class Indexer(object): # {{{
return indices
# }}}
# TBS {{{
def calculate_trailing_byte_sequences(self):
self.tbs_map = {}
found_node = False
@ -670,6 +695,7 @@ class Indexer(object): # {{{
def get_trailing_byte_sequence(self, num):
return self.tbs_map[num].bytestring
# }}}
# }}}