pofParser: removed last (blank) car for part_name, fixed usercode offset

Author: trabucayre

src/pofParser.cpp

@@ -141,7 +141,7 @@ uint32_t POFParser::parseSection(uint16_t flag, uint32_t pos, uint32_t size)
 			_hdr["tool"] = _raw_data.substr(pos, size);
 			break;
 		case 0x02:  // full FPGA part name
-			_hdr["part_name"] = _raw_data.substr(pos, size);
+			_hdr["part_name"] = _raw_data.substr(pos, size-1); // -1 because '\0'
 			break;
 		case 0x03:  // bitstream/design/xxx name
 			_hdr["design_name"] = _raw_data.substr(pos, size);
@@ -160,7 +160,7 @@ uint32_t POFParser::parseSection(uint16_t flag, uint32_t pos, uint32_t size)
 				printf("size %u %zu\n", size, _bit_data.size());
 			break;
 		case 0x13:  // contains usercode / checksum
-			_hdr["usercode"] = std::to_string(ARRAY2INT16((&_raw_data.data()[pos])));
+			_hdr["usercode"] = std::to_string(ARRAY2INT32((&_raw_data.data()[pos+size-4])));
 			if (_verbose) {
 				t = _raw_data.substr(pos, size);
 				for (size_t i = 0; i < t.size(); i++)