mirror of
https://github.com/libretro/RetroArch.git
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44 lines
864 B
Bash
44 lines
864 B
Bash
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# Only add standalone functions to this file which are easy to source anywhere.
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# die:
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# Prints a warning or an exit error.
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# $1 = exit code, use : to not exit when printing warnings
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# $@ = exit or warning messages
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die()
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{ ret="$1"
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shift 1
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printf %s\\n "$@" >&2
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case "$ret" in
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: ) return 0 ;;
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* ) exit "$ret" ;;
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esac
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}
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# exists:
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# Finds executable files in the $PATH
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# $@ = files
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exists()
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{ v=1
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while [ $# -gt 0 ]; do
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arg="$1"
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shift 1
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case "$arg" in ''|*/) continue ;; esac
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x="${arg##*/}"
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z="${arg%/*}"
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[ ! -f "$z/$x" ] || [ ! -x "$z/$x" ] && [ "$z/$x" = "$arg" ] &&
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continue
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[ "$x" = "$z" ] && [ -x "$z/$x" ] && [ ! -f "$arg" ] && z=
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p=":$z:$PATH"
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while [ "$p" != "${p#*:}" ]; do
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p="${p#*:}"
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d="${p%%:*}"
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if [ -f "$d/$x" ] && [ -x "$d/$x" ]; then
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printf %s\\n "$d/$x"
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v=0
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break
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fi
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done
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done
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return $v
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}
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