78 lines
2.4 KiB
Python
Executable File
78 lines
2.4 KiB
Python
Executable File
#!/usr/bin/env python
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"""Extract Html content from an EPUB file (.chm)"""
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rclepub_html_mtype = "text/html"
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import sys
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import os
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import re
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import rclexecm
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try:
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import epub
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except:
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print "RECFILTERROR HELPERNOTFOUND python:epub"
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sys.exit(1);
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class rclEPUB:
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"""RclExecM slave worker for extracting all text from an EPUB
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file. We first extract the list of internal nodes, and them return them
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one by one. The ipath is the internal href"""
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def __init__(self, em):
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self.currentindex = 0
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self.em = em
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self.em.setmimetype(rclepub_html_mtype)
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def extractone(self, id):
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"""Extract one path-named internal file from the EPUB file"""
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#self.em.rclog("extractone: [%s]"%(path))
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iseof = rclexecm.RclExecM.noteof
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if self.currentindex >= len(self.contents) -1:
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iseof = rclexecm.RclExecM.eofnext
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try:
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item = self.book.get_item(id)
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if item is None:
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raise Exception("Item not found for id %s" % (id,))
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doc = self.book.read_item(item)
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doc = re.sub('''</[hH][eE][aA][dD]''',
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'''<meta name="rclaptg" content="epub"></head>''', doc)
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self.em.setmimetype(rclepub_html_mtype)
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return (True, doc, id, iseof)
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except Exception, err:
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self.em.rclog("extractone: failed: [%s]" % err)
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return (False, "", id, iseof)
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def openfile(self, params):
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"""Open the EPUB file, create a contents array"""
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self.currentindex = 0
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self.contents = []
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try:
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self.book = epub.open(params["filename:"])
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except Exception, err:
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self.em.rclog("openfile: epub.open failed: [%s]" % err)
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return False
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for id, item in self.book.opf.manifest.iteritems():
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if item.media_type == 'application/xhtml+xml':
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self.contents.append(id)
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return True
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def getipath(self, params):
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return self.extractone(params["ipath:"])
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def getnext(self, params):
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if self.currentindex >= len(self.contents):
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return (False, "", "", rclexecm.RclExecM.eofnow)
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else:
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ret= self.extractone(self.contents[self.currentindex])
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self.currentindex += 1
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return ret
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proto = rclexecm.RclExecM()
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extract = rclEPUB(proto)
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rclexecm.main(proto, extract)
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