51 lines
1.2 KiB
Bash
51 lines
1.2 KiB
Bash
#!/usr/bin/env sh
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[ -n "${_DETECT_SH_}" ] && return || readonly _DETECT_SH_=1
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[ -n "${_VERBOSE_}" ] && echo "-- INCLUDE: detect.sh"
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_detect() {
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cmd="$1"; optional="$2"; verbose="$3";
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[ -n "$verbose" ] || [ -z "${_VERBOSE_}" ] || verbose=1;
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if ! type "$cmd" &> /dev/null; then
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[ -z "$verbose" ] || echo "-- DETECT: $cmd not found"
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if [ -z "$optional" ]; then
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echo >&2 "-- DETECT: $cmd not found, but required"
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exit 1
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fi
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else
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[ -z "$verbose" ] || echo "-- DETECT: $cmd found"
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eval "${cmd}_FOUND=1"
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fi
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}
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_detect_fn() {
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[ `type -t $1`"" == "function" ]
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}
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if [ -n "${_TEST_}" ]; then
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echo "-- TEST_BEG: _detect"
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_CMDS=(ls none)
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for _cmd in "${_CMDS[@]}"; do
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_detect "$_cmd" 1
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_CMD_FOUND="${_cmd}_FOUND"
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if [ -n "${!_CMD_FOUND}" ]; then
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echo "-- ${_CMD_FOUND} set"
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else
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echo "-- ${_CMD_FOUND} unset"
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fi
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done
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echo "-- TEST_END: _detect"
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echo "-- TEST_BEG: _detect_fn"
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_FUNCS=(_detect none)
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for _fn in "${_FUNCS[@]}"; do
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if _detect_fn "$_fn"; then
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echo "-- $_fn function exists"
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else
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echo "-- $_fn function not exist"
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fi
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done
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echo "-- TEST_END: _detect_fn"
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fi
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