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Implement support for parsing ToC from NCX files

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Kovid Goyal 2008-02-14 04:49:17 +00:00
parent be22c9a3b0
commit 2bc40380db
1 changed files with 72 additions and 27 deletions
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99
src/libprs500/ebooks/metadata/opf.py
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@ -14,7 +14,7 @@
## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
'''Read/Write metadata from Open Packaging Format (.opf) files.'''
import sys, re, os
import sys, re, os, glob
from urllib import unquote
from urlparse import urlparse
import xml.dom.minidom as dom
@ -85,35 +85,80 @@ class TOC(list):
def __init__(self, opfreader, cwd):
self.toc = toc = None
try:
toc = opfreader.soup.find('guide').find('reference', attrs={'type':'toc'})['href']
except:
for item in opfreader.manifest:
if 'toc' in item.href.lower():
toc = item.href
break
toc = opfreader.soup.find('spine', toc=True)
if toc is not None:
toc = urlparse(unquote(toc))[2]
if not os.path.isabs(toc):
toc = os.path.join(cwd, toc)
toc = toc['toc']
if toc is None:
try:
if not os.path.exists(toc):
bn = os.path.basename(toc)
bn = bn.replace('_top.htm', '_toc.htm') # Bug in BAEN OPF files
toc = os.path.join(os.path.dirname(toc), bn)
soup = BeautifulSoup(open(toc, 'rb').read(), convertEntities=BeautifulSoup.HTML_ENTITIES)
for a in soup.findAll('a'):
if not a.has_key('href'):
continue
purl = urlparse(unquote(a['href']))
href, fragment = purl[2], purl[5]
if not os.path.isabs(href):
href = os.path.join(cwd, href)
txt = ''.join([unicode(s).strip() for s in a.findAll(text=True)])
self.append((href, fragment, txt))
self.toc = toc
toc = opfreader.soup.find('guide').find('reference', attrs={'type':'toc'})['href']
except:
pass
for item in opfreader.manifest:
if 'toc' in item.href.lower():
toc = item.href
break
if toc is not None:
if toc.lower() != 'ncx':
toc = urlparse(unquote(toc))[2]
if not os.path.isabs(toc):
toc = os.path.join(cwd, toc)
try:
if not os.path.exists(toc):
bn = os.path.basename(toc)
bn = bn.replace('_top.htm', '_toc.htm') # Bug in BAEN OPF files
toc = os.path.join(os.path.dirname(toc), bn)
self.read_html_toc(toc, cwd)
self.toc = toc
except:
pass
else:
cwd = os.path.abspath(cwd)
m = glob.glob(os.path.join(cwd, '*.ncx'))
if m:
toc = m[0]
try:
self.read_ncx_toc(toc)
self.toc = toc
except:
raise
pass
def read_ncx_toc(self, toc):
bdir = os.path.dirname(toc)
soup = BeautifulStoneSoup(open(toc, 'rb').read(),
convertEntities=BeautifulSoup.HTML_ENTITIES)
elems = soup.findAll('navpoint')
elems.sort(cmp=lambda x, y: cmp(int(x['playorder']), int(y['playorder'])))
for elem in elems:
txt = u''
for nl in elem.findAll('navlabel'):
for text in nl.findAll('text'):
txt += ''.join([unicode(s) for s in text.findAll(text=True)])
content = elem.find('content')
if content is None or not content.has_key('src') or not txt:
continue
purl = urlparse(unquote(content['src']))
href, fragment = purl[2], purl[5]
if not os.path.isabs(href):
href = os.path.join(bdir, href)
self.append((href, fragment, txt))
def read_html_toc(self, toc, cwd):
soup = BeautifulSoup(open(toc, 'rb').read(), convertEntities=BeautifulSoup.HTML_ENTITIES)
for a in soup.findAll('a'):
if not a.has_key('href'):
continue
purl = urlparse(unquote(a['href']))
href, fragment = purl[2], purl[5]
if not os.path.isabs(href):
href = os.path.join(cwd, href)
txt = ''.join([unicode(s).strip() for s in a.findAll(text=True)])
self.append((href, fragment, txt))
class standard_field(object):