Rust Shellscript Lang

Run single Rust source like a Shellscript.

For Rust source, suffix is .rs, and for Rustshellscript source, suffix is same as Rust! But if you like, use .rss.

When run .rss, it would be compiled first, then executed.

• all executables would be not removed
• run again without modification, just execute
• run again with some modifications, recompile, then execute

Dependencies

• rustc
• basename
• mktemp

Howto Use

1. Insert Rustshellscript magic codes in header of single Rust source
2. Now you get a single Rustshellscript source
3. Give executable permission
4. Run it!

Magic Codes

for Bash

#!/bin/env bash
#![allow(unused_attributes)] /*
declare -r SOURCE_PATH="$0"
# shellcheck disable=SC2155
declare -r SOURCE_NAME=$(basename "${SOURCE_PATH}")
# shellcheck disable=SC2155
declare -ra TARGETS_PATH=$(ls -t /tmp/"${SOURCE_NAME}".* 2>/dev/null)
declare TARGET_PATH="${TARGETS_PATH[0]}"
if [ "${SOURCE_PATH}" -nt "${TARGET_PATH}" ]; then
    TARGET_PATH=$(mktemp --dry-run /tmp/"${SOURCE_NAME}".XXXXX)
    rustc "${SOURCE_PATH}" -o "${TARGET_PATH}" || exit $?
fi
exec "${TARGET_PATH}" "$@" || exit $? # */

for Ksh

# should be same as `for Bash`

for more ...

# TBD