Module utils

various helper functions.

Functions

• frombytecaps
  attempt to convert a byte value into a pair of uppercase hexadecimal values.
• fromhex
  Helper function which takes a mutable slice of expected byte-length and attempts to parse an immutable slice of bytes as hexadecimal characters. Returns an error if src is not exactly twice the size of buf, or if any non-hexadecimal characters are found.
• fromval
  convert a byte value in range 0x00 to 0x0f to its corresponding lowercase hexadecimal character.
• fromvalcaps
  convert a byte value in range 0x00 to 0x0f to its corresponding uppercase hexadecimal character.
• intobyte
  attemt to convert a pair of bytes from a hexadecimal string into their underlying byte representation.
• intohex
  write hex to buffer.
• intohexcaps
  write uppercase hex to buffer.
• intoval
  convert a byte from a hex string to its numeric value. use the tobyte function to convert a pair of hex characters to their actual byte representation.
• writehex
  Helper function which attempts to convert an immutable set of bytes into hexadecimal characters and write them to some destination.
• writehexcaps
  Helper function which attempts to convert an immutable set of bytes into capital hexadecimal characters and write them to some destination.