mirror of
https://github.com/notwa/rc
synced 2024-11-13 19:59:02 -08:00
62 lines
1.1 KiB
Bash
Executable file
62 lines
1.1 KiB
Bash
Executable file
#!/usr/bin/env sh
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# FAKE_COMPAT
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### @ witch
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### this is a personal rewrite of `which` from Debian.
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### the original version didn't run on certain shells,
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### and inherited inconsistent behaviors from getopts.
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### the silent (`-s`) flag from Ubuntu has been added.
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set -ef
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all=0 silent=0
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for flag; do
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case "$flag" in
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(--) shift; break;;
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(-?*)
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shift
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while flag="${flag#?}"; [ -n "$flag" ]; do
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case "$flag" in
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(a*) all=1;;
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(s*) silent=1;;
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(*)
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printf >&2 'Illegal option: -%.1s\n' "$flag"
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printf 'Usage: %s\n' "$0 [-as] args"
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exit 2;;
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esac
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done;;
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(*) break;;
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esac
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done
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[ "$#" = 0 ] && res=1 || res=0
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if [ "$silent" = 0 ]; then
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puts() { printf %s\\n "$@"; }
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else
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puts() { :; }
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fi
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IFS=:
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for prog; do
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err=1
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case "$prog" in
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(*/*)
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if [ -f "$prog" ] && [ -x "$prog" ]; then
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puts "$prog"
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err=0
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fi;;
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(*)
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set -- $(printf %s: "$PATH")
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for sub; do
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[ -n "$sub" ] || sub=.
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if [ -f "$sub/$prog" ] && [ -x "$sub/$prog" ]; then
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puts "$sub/$prog"
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err=0
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[ "$all" = 1 ] || break
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fi
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done;;
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esac
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[ "$err" = 0 ] || res=1
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done
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exit "$res"
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