Re: [gobo-eiffel-develop] Bug in base64 encoder

[Jann R. <roe...@et...>]

Ok,
this was my fault. I forgot to call close on the encoder.
Sorry about that.

Jann

Jann Röder schrieb:
> Hello,
> I am using the gobo base64 encoder to encode the managed_pointer output 
> generated by the SED serializer. And now I found a strange bug. In some 
> cases encoding and decoding of a storable works and in others it 
> doesn't. The decoded string is one byte too short. In the example below 
> the encoding and decoding of the array <<"hello", "world">> doesn't 
> work, while the array <<"">> can be decoded just fine.
> 
> This is the example code that reproduces the problem:
> 
> test_base_64_serialization_report is
> 		-- Test the base64 encoder
> 	local
> 		l_ptr, l_ptr2: MANAGED_POINTER
> 		l_array: ARRAY[STRING]
> 		l_facilities: SED_STORABLE_FACILITIES
> 		l_rw: SED_MEMORY_READER_WRITER
> 		l_i: INTEGER
> 		l_str, l_out_str: STRING
> 		l_blob_string: UC_UTF8_STRING
> 		l_encoder: UT_BASE64_ENCODING_OUTPUT_STREAM
> 		l_input_stream: KL_STRING_INPUT_STREAM
> 		l_decoder: UT_BASE64_DECODING_INPUT_STREAM
> 	do
> 		create l_facilities
> 		create l_rw.make
> 
> 		l_array := << "hello", "world" >>
> 		--l_array := <<"">>
> 
> 		l_facilities.independent_store (l_array, l_rw, True)
> 		l_ptr := l_rw.data
> 
> 		-- Encode
> 		create l_blob_string.make (1000)
> 		create l_encoder.make (l_blob_string, False, False)
> 		from
> 			l_i := 0
> 		until
> 			l_i >= l_ptr.count
> 		loop
> 			l_encoder.put_character (l_ptr.read_character (l_i))
> 			l_i := l_i + 1
> 		end
> 		l_str := l_blob_string.to_utf8
> 
> 		-- Decode
> 		create l_input_stream.make (l_str)
> 		create l_decoder.make (l_input_stream)
> 		from
> 			create l_out_str.make (l_str.count)
> 		until
> 			l_decoder.end_of_input
> 		loop
> 			l_decoder.read_string (l_str.count)
> 			l_out_str.append (l_decoder.last_string)
> 		end
> 		create l_ptr2.make_from_pointer (l_out_str.area.base_address, 
> l_out_str.count)
> 		check
> 			l_ptr ~ l_ptr2
> 		end
> 	end
> 
> Thanks,
> Jann
> 
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