def getobj(self, objid):
assert objid != 0
if not self.xrefs:
raise PDFException('PDFDocument is not initialized')
if 2 <= self.debug:
print >> sys.stderr, 'getobj: objid=%r' % (objid)
if objid in self._cached_objs:
(obj, genno) = self._cached_objs[objid]
else:
for xref in self.xrefs:
try:
(strmid, index, genno) = xref.get_pos(objid)
except KeyError:
continue
try:
if strmid is not None:
stream = stream_value(self.getobj(strmid))
obj = self._getobj_objstm(stream, index, objid)
else:
obj = self._getobj_parse(index, objid)
if isinstance(obj, PDFStream):
obj.set_objid(objid, genno)
break
except (PSEOF, PDFSyntaxError):
continue
else:
raise PDFObjectNotFound(objid)
if 2 <= self.debug:
print >> sys.stderr, 'register: objid=%r: %r' % (objid, obj)
if self.caching:
self._cached_objs[objid] = (obj, genno)
if self.decipher:
obj = decipher_all(self.decipher, objid, genno, obj)
return obj
def getobj(self, objid):
assert objid != 0
if not self.xrefs:
raise PDFException('PDFDocument is not initialized')
if 2 <= self.debug:
print >>sys.stderr, 'getobj: objid=%r' % (objid)
if objid in self._cached_objs:
(obj, genno) = self._cached_objs[objid]
else:
for xref in self.xrefs:
try:
(strmid, index, genno) = xref.get_pos(objid)
except KeyError:
continue
try:
if strmid is not None:
stream = stream_value(self.getobj(strmid))
obj = self._getobj_objstm(stream, index, objid)
else:
obj = self._getobj_parse(index, objid)
if self.decipher:
obj = decipher_all(self.decipher, objid, genno, obj)
if isinstance(obj, PDFStream):
obj.set_objid(objid, genno)
break
except (PSEOF, PDFSyntaxError):
continue
else:
raise PDFObjectNotFound(objid)
if 2 <= self.debug:
print >>sys.stderr, 'register: objid=%r: %r' % (objid, obj)
if self.caching:
self._cached_objs[objid] = (obj, genno)
return obj
def getobj(self, objid):
if not self.xrefs:
raise PDFException('PDFDocument is not initialized')
if 2 <= self.debug:
print >>sys.stderr, 'getobj: objid=%r' % (objid)
if objid in self._cached_objs:
genno = 0
obj = self._cached_objs[objid]
else:
for xref in self.xrefs:
try:
(strmid, index) = xref.get_pos(objid)
break
except KeyError:
pass
else:
if STRICT:
raise PDFSyntaxError('Cannot locate objid=%r' % objid)
# return null for a nonexistent reference.
return None
if strmid:
stream = stream_value(self.getobj(strmid))
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
if strmid in self._parsed_objs:
objs = self._parsed_objs[strmid]
else:
parser = PDFStreamParser(stream.get_data())
parser.set_document(self)
objs = []
try:
while 1:
(_,obj) = parser.nextobject()
objs.append(obj)
except PSEOF:
pass
if self.caching:
self._parsed_objs[strmid] = objs
genno = 0
i = n*2+index
try:
obj = objs[i]
except IndexError:
if STRICT:
raise PDFSyntaxError('Invalid object number: objid=%r' % (objid))
# return None for an invalid object number
return None
if isinstance(obj, PDFStream):
obj.set_objid(objid, 0)
else:
self._parser.seek(index)
(_,objid1) = self._parser.nexttoken() # objid
(_,genno) = self._parser.nexttoken() # genno
(_,kwd) = self._parser.nexttoken()
# #### hack around malformed pdf files
#assert objid1 == objid, (objid, objid1)
if objid1 != objid:
x = []
while kwd is not self.KEYWORD_OBJ:
(_,kwd) = self._parser.nexttoken()
x.append(kwd)
if x:
objid1 = x[-2]
genno = x[-1]
# #### end hack around malformed pdf files
if kwd is not self.KEYWORD_OBJ:
raise PDFSyntaxError('Invalid object spec: offset=%r' % index)
try:
(_,obj) = self._parser.nextobject()
if isinstance(obj, PDFStream):
obj.set_objid(objid, genno)
except PSEOF:
return None
if 2 <= self.debug:
print >>sys.stderr, 'register: objid=%r: %r' % (objid, obj)
if self.caching:
self._cached_objs[objid] = obj
if self.decipher:
obj = decipher_all(self.decipher, objid, genno, obj)
return obj
def getobj(self, objid):
if not self.ready:
raise PDFException('PDFDocument not initialized')
#assert self.xrefs
if 2 <= self.debug:
print >>stderr, 'getobj: objid=%r' % (objid)
if objid in self.objs:
genno = 0
obj = self.objs[objid]
else:
for xref in self.xrefs:
try:
(strmid, index) = xref.getpos(objid)
break
except KeyError:
pass
else:
if STRICT:
raise PDFSyntaxError('Cannot locate objid=%r' % objid)
return None
if strmid:
stream = stream_value(self.getobj(strmid))
if stream.dic.get('Type') is not LITERAL_OBJSTM:
if STRICT:
raise PDFSyntaxError('Not a stream object: %r' % stream)
try:
n = stream.dic['N']
except KeyError:
if STRICT:
raise PDFSyntaxError('N is not defined: %r' % stream)
n = 0
if strmid in self.parsed_objs:
objs = self.parsed_objs[stream]
else:
parser = PDFObjStrmParser(self, stream.get_data())
objs = []
try:
while 1:
(_,obj) = parser.nextobject()
objs.append(obj)
except PSEOF:
pass
self.parsed_objs[stream] = objs
genno = 0
i = n*2+index
try:
obj = objs[i]
except IndexError:
raise PDFSyntaxError('Invalid object number: objid=%r' % (objid))
if isinstance(obj, PDFStream):
obj.set_objid(objid, 0)
else:
self.parser.seek(index)
(_,objid1) = self.parser.nexttoken() # objid
(_,genno) = self.parser.nexttoken() # genno
#assert objid1 == objid, (objid, objid1)
(_,kwd) = self.parser.nexttoken()
if kwd is not self.KEYWORD_OBJ:
raise PDFSyntaxError('Invalid object spec: offset=%r' % index)
(_,obj) = self.parser.nextobject()
if isinstance(obj, PDFStream):
obj.set_objid(objid, genno)
if 2 <= self.debug:
print >>stderr, 'register: objid=%r: %r' % (objid, obj)
self.objs[objid] = obj
if self.decipher:
obj = decipher_all(self.decipher, objid, genno, obj)
return obj
