def _indexTable2data(self, pfx: Name, decoder, end: int):
# traverse the manifest tree
# input: decoder with index table
# output: reassembled data
data = b''
while decoder._offset < end:
if decoder.peekType(NDN_TYPE_MANIFEST_DATAPTR, end):
ptr = decoder.readBlobTlv(NDN_TYPE_MANIFEST_DATAPTR)
# print("data ptr %s" % binascii.hexlify(ptr))
name = copy.copy(pfx).setDigest(ptr)
# print(name.to_json())
chunk = self.icn.readChunk(name)
data += NdnTlvEncoder().decode(chunk).get_bytes()
elif decoder.peekType(NDN_TYPE_MANIFEST_MANIFESTPTR, end):
ptr = decoder.readBlobTlv(NDN_TYPE_MANIFEST_MANIFESTPTR)
# print("manifest ptr %s" % binascii.hexlify(ptr))
name = copy.copy(pfx).setDigest(ptr)
chunk = self.icn.readChunk(name)
content = NdnTlvEncoder().decode(chunk)
data += self._manifestToBytes(content.get_bytes())
else:
print("invalid index table entry")
return data
return data
def bytesFromManifestName(self, name: Name):
chunk = self.icn.readChunk(name)
content = NdnTlvEncoder().decode(chunk)
name._components.pop() # drop the last component (e.g. '_')
return self._manifestToBytes(name, content.get_bytes())