242 lines
7.4 KiB
Python
Executable File
242 lines
7.4 KiB
Python
Executable File
#!/usr/bin/env python
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import sys
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stdout = sys.stdout
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stderr = sys.stderr
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from pdflib.pdfparser import PDFDocument, PDFParser, PDFPasswordIncorrect
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from pdflib.pdfinterp import PDFResourceManager, PDFPageInterpreter
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from pdflib.pdffont import PDFUnicodeNotDefined
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from pdflib.cmap import CMapDB
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from pdflib.page import PDFDevice, PageItem, FigureItem, TextItem, PageAggregator
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def enc(x, codec):
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x = x.replace('&','&').replace('>','>').replace('<','<').replace('"','"')
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return x.encode(codec, 'xmlcharrefreplace')
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def encprops(props, codec):
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if not props: return ''
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return ''.join( ' %s="%s"' % (enc(k,codec), enc(str(v),codec)) for (k,v) in sorted(props.iteritems()) )
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## TextConverter
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class TextConverter(PageAggregator):
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def __init__(self, rsrc, outfp, codec='ascii'):
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PageAggregator.__init__(self, rsrc)
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self.outfp = outfp
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self.codec = codec
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return
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## SGMLConverter
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##
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class SGMLConverter(TextConverter):
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def end_page(self, page):
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TextConverter.end_page(self, page)
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page = self.cur_item
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def f(item):
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bbox = '%.3f,%.3f,%.3f,%.3f' % item.bbox
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if isinstance(item, FigureItem):
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self.outfp.write('<figure id="%s" bbox="%s">\n' % (item.id, bbox))
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for child in item.objs:
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f(child)
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self.outfp.write('</figure>\n')
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elif isinstance(item, TextItem):
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self.outfp.write('<text font="%s" direction="%s" bbox="%s" fontsize="%.3f">' %
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(enc(item.font.fontname, self.codec), item.direction, bbox, item.fontsize))
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self.outfp.write(enc(item.text, self.codec))
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self.outfp.write('</text>\n')
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bbox = '%.3f,%.3f,%.3f,%.3f' % page.bbox
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self.outfp.write('<page id="%s" bbox="%s" rotate="%d">\n' %
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(page.id, bbox, page.rotate))
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for child in page.objs:
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f(child)
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self.outfp.write('</page>\n')
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return
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## HTMLConverter
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##
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class HTMLConverter(TextConverter):
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def __init__(self, rsrc, outfp, codec='utf-8', pagenum=True, pagepad=50, scale=1):
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TextConverter.__init__(self, rsrc, outfp, codec=codec)
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self.pagenum = pagenum
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self.pagepad = pagepad
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self.scale = scale
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self.outfp.write('<html><head><meta http-equiv="Content-Type" content="text/html; charset=%s">\n' % self.codec)
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self.outfp.write('</head><body>\n')
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self.yoffset = self.pagepad
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return
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def end_page(self, page):
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TextConverter.end_page(self, page)
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page = self.cur_item
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def f(item):
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if isinstance(item, FigureItem):
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pass
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elif isinstance(item, TextItem):
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if item.direction == 2:
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wmode = 'tb-rl'
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else:
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wmode = 'lr-tb'
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(x,_,_,y) = item.bbox
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self.outfp.write('<span style="position:absolute; writing-mode:%s; left:%dpx; top:%dpx; font-size:%dpx;">' %
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(wmode, x*self.scale, (self.yoffset-y)*self.scale, item.fontsize*self.scale))
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self.outfp.write(enc(item.text, self.codec))
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self.outfp.write('</span>\n')
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(x0,y0,x1,y1) = page.bbox
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self.yoffset += y1
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if self.pagenum:
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self.outfp.write('<div style="position:absolute; top:%dpx;"><a name="%s">Page %s</a></div>' %
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((self.yoffset-y1)*self.scale, page.id, page.id))
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self.outfp.write('<span style="position:absolute; border: 1px solid gray; '
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'left:%dpx; top:%dpx; width:%dpx; height:%dpx;"></span>\n' %
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(x0*self.scale, (self.yoffset-y1)*self.scale, (x1-x0)*self.scale, (y1-y0)*self.scale))
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for child in page.objs:
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f(child)
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self.yoffset += self.pagepad
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return
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def close(self):
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self.outfp.write('<div style="position:absolute; top:0px;">Page: %s</div>\n' %
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', '.join('<a href="#%s">%s</a>' % (i,i) for i in xrange(self.pageno)))
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self.outfp.write('</body></html>\n')
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return
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## TagExtractor
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##
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class TagExtractor(PDFDevice):
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def __init__(self, rsrc, outfp, codec='utf-8'):
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PDFDevice.__init__(self, rsrc)
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self.outfp = outfp
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self.codec = codec
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self.pageno = 0
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self.tag = None
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return
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def render_image(self, stream, size, matrix):
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return
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def render_string(self, textstate, textmatrix, size, seq):
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font = textstate.font
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text = ''
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for x in seq:
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if not isinstance(x, str): continue
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chars = font.decode(x)
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for cid in chars:
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try:
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char = font.to_unicode(cid)
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text += char
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except PDFUnicodeNotDefined, e:
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pass
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self.outfp.write(enc(text, self.codec))
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return
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def begin_page(self, page):
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(x0, y0, x1, y1) = page.mediabox
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bbox = '%.3f,%.3f,%.3f,%.3f' % (x0, y0, x1, y1)
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self.outfp.write('<page id="%s" bbox="%s" rotate="%d">' %
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(self.pageno, bbox, page.rotate))
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return
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def end_page(self, page):
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self.outfp.write('</page>\n')
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self.pageno += 1
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return
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def begin_tag(self, tag, props=None):
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self.outfp.write('<%s%s>' % (enc(tag.name, self.codec), encprops(props, self.codec)))
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self.tag = tag
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return
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def end_tag(self):
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assert self.tag
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self.outfp.write('</%s>' % enc(self.tag.name, self.codec))
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self.tag = None
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return
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def do_tag(self, tag, props=None):
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self.outfp.write('<%s%s/>' % (enc(tag.name, self.codec), encprops(props, self.codec)))
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return
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# pdf2txt
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class TextExtractionNotAllowed(RuntimeError): pass
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def convert(rsrc, device, fname, pagenos=None, maxpages=0, password=''):
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doc = PDFDocument()
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fp = file(fname, 'rb')
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parser = PDFParser(doc, fp)
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try:
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doc.initialize(password)
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except PDFPasswordIncorrect:
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raise TextExtractionNotAllowed('Incorrect password')
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if not doc.is_extractable:
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raise TextExtractionNotAllowed('Text extraction is not allowed: %r' % fname)
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interpreter = PDFPageInterpreter(rsrc, device)
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for (pageno,page) in enumerate(doc.get_pages()):
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if pagenos and (pageno not in pagenos): continue
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interpreter.process_page(page)
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if maxpages and maxpages <= pageno+1: break
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device.close()
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fp.close()
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return
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# main
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def main(argv):
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import getopt
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def usage():
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print 'usage: %s [-d] [-p pagenos] [-P password] [-c codec] [-t html|sgml|tag] [-o output] file ...' % argv[0]
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return 100
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try:
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(opts, args) = getopt.getopt(argv[1:], 'dp:P:c:t:o:C:D:m:')
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except getopt.GetoptError:
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return usage()
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if not args: return usage()
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debug = 0
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cmapdir = 'CMap'
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cdbcmapdir = 'CDBCMap'
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codec = 'ascii'
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pagenos = set()
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maxpages = 0
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outtype = 'html'
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password = ''
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outfp = stdout
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for (k, v) in opts:
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if k == '-d': debug += 1
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elif k == '-p': pagenos.update( int(x)-1 for x in v.split(',') )
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elif k == '-P': password = v
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elif k == '-c': codec = v
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elif k == '-m': maxpages = int(v)
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elif k == '-C': cmapdir = v
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elif k == '-D': cdbcmapdir = v
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elif k == '-t': outtype = v
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elif k == '-o': outfp = file(v, 'wb')
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#
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CMapDB.debug = debug
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PDFResourceManager.debug = debug
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PDFDocument.debug = debug
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PDFParser.debug = debug
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PDFPageInterpreter.debug = debug
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#
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CMapDB.initialize(cmapdir, cdbcmapdir)
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rsrc = PDFResourceManager()
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if outtype == 'sgml':
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device = SGMLConverter(rsrc, outfp, codec)
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elif outtype == 'html':
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device = HTMLConverter(rsrc, outfp, codec)
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elif outtype == 'tag':
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device = TagExtractor(rsrc, outfp, codec)
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else:
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return usage()
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for fname in args:
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convert(rsrc, device, fname, pagenos,
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maxpages=maxpages, password=password)
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return
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if __name__ == '__main__': sys.exit(main(sys.argv))
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