MYNT-EYE-S-SDK/scripts/common/detect.sh
2018-03-09 11:52:49 +08:00

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