示例#1
0
 def load(self, parser, debug=0):
     parser.seek(0)
     while 1:
         try:
             (pos, line) = parser.nextline()
         except PSEOF:
             break
         if line.startswith('trailer'):
             parser.seek(pos)
             self.load_trailer(parser)
             if 1 <= debug:
                 print >> sys.stderr, 'trailer: %r' % self.get_trailer()
             break
         m = self.PDFOBJ_CUE.match(line)
         if not m:
             continue
         (objid, genno) = m.groups()
         objid = int(objid)
         genno = int(genno)
         self.offsets[objid] = (None, pos, genno)
         # expand ObjStm.
         parser.seek(pos)
         (_, obj) = parser.nextobject()
         if isinstance(obj,
                       PDFStream) and obj.get('Type') is LITERAL_OBJSTM:
             stream = stream_value(obj)
             try:
                 n = stream['N']
             except KeyError:
                 if STRICT:
                     raise PDFSyntaxError('N is not defined: %r' % stream)
                 n = 0
             parser1 = PDFStreamParser(stream.get_data())
             objs = []
             try:
                 while 1:
                     (_, obj) = parser1.nextobject()
                     objs.append(obj)
             except PSEOF:
                 pass
             n = min(n, len(objs) // 2)
             for index in xrange(n):
                 objid1 = objs[index * 2]
                 self.offsets[objid1] = (objid, index, 0)
     return
示例#2
0
 def _get_objects(self, stream):
     if stream.get('Type') is not LITERAL_OBJSTM:
         if STRICT:
             raise PDFSyntaxError('Not a stream object: %r' % stream)
     try:
         n = stream['N']
     except KeyError:
         if STRICT:
             raise PDFSyntaxError('N is not defined: %r' % stream)
         n = 0
     parser = PDFStreamParser(stream.get_data())
     parser.set_document(self)
     objs = []
     try:
         while 1:
             (_, obj) = parser.nextobject()
             objs.append(obj)
     except PSEOF:
         pass
     return (objs, n)