H

For the dead week 𝓮𝓷𝓳𝓸𝔂𝓮𝓻. A sophisticated twist on Fernsicles/h.

Usage

H [eEdD] (-|.*)

e|E encodes capture group one. d|D decodes capture group one. Specifying - reads from stdin as capture group one, and anything else reads the remaining arguments as capture group one.

How

For encoding, the program parses your input as a bitstream of half-byte values, converting each to some variant of the letter H.

For decoding, the program parses your input as a Vec<char>, then performs the reverse lookup. If an invalid char is passed, the program will interpret it as a zero byte 0x00.

Since we can't declare a static hash table in Rust without use of external dependencies, we just use functions instead.