Convert ASCII Hex text to binary

Debugging sometimes means dumping a hex stream to the console, or to a log file, something like 0x0a 0xff…

I wrote a simple command line tool to convert that kind of hex data to binary.

The following are all valid hex values and produce the same binary

• “0xDE 0xAD”
• “0xDE0xAD”
• “0xD E0xAD”
• “0xD\r\nE0xAD”
• “0xDE\r\n 0xAD”
• “0xDE\n 0xAD”
• “0xDE\r 0xAD”
• “0xD\r\nE 0xAD”
• “0x00DE 0xAD”
• “DE AD”
• “DEAD”
• “DEA D”
• “DEA\r\nD”

The following are invalid and will result in an error

• “0x01DE 0xAD”
• “0xDExAD”
• “0xDE AD”