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#!/bin/sh -e
# Portable install version that supports -D -m and -t
usage() {
printf '%s\n' "usage: $0 [-D] [-m mode] source dest" \
" or: $0 [-D] [-m mode] [-t dir] [source...]" >&2
exit 1
}
die() { printf '%s\n' "$@" >&2; exit 1;}
mkdirp=''
target=''
mode=''
REST=''
parse() {
OPTIND=$(($#+1))
while OPTARG= && [ $# -gt 0 ]; do
case $1 in
-[tm]?*) OPTARG=$1; shift
eval 'set -- "${OPTARG%"${OPTARG#??}"}" "${OPTARG#??}"' ${1+'"$@"'}
;;
-[!-]?*) OPTARG=$1; shift
eval 'set -- "${OPTARG%"${OPTARG#??}"}" -"${OPTARG#??}"' ${1+'"$@"'}
OPTARG= ;;
esac
case $1 in
'-D')
[ "${OPTARG:-}" ] && OPTARG=${OPTARG#*\=} && set "noarg" "$1" && break
eval '[ ${OPTARG+x} ] &&:' && OPTARG='1' || OPTARG=''
mkdirp="$OPTARG"
;;
'-t')
[ $# -le 1 ] && set "required" "$1" && break
OPTARG=$2
target="$OPTARG"
shift ;;
'-m')
[ $# -le 1 ] && set "required" "$1" && break
OPTARG=$2
mode="$OPTARG"
shift ;;
'-h'|'--help')
usage
exit 0 ;;
--)
shift
while [ $# -gt 0 ]; do
REST="${REST} \"\${$((OPTIND-$#))}\""
shift
done
break ;;
[-]?*) set "unknown" "$1"; break ;;
*)
REST="${REST} \"\${$((OPTIND-$#))}\""
esac
shift
done
[ $# -eq 0 ] && { OPTIND=1; unset OPTARG; return 0; }
case $1 in
unknown) set "Unrecognized option: $2" "$@" ;;
noarg) set "Does not allow an argument: $2" "$@" ;;
required) set "Requires an argument: $2" "$@" ;;
pattern:*) set "Does not match the pattern (${1#*:}): $2" "$@" ;;
notcmd) set "Not a command: $2" "$@" ;;
*) set "Validation error ($1): $2" "$@"
esac
echo "$1" >&2
exit 1
}
parse "$@" && eval set -- "$REST"
if [ "$target" ]; then
[ "$mkdirp" ] || [ -d "$target" ] || die "$target doesn't exist"
mkdir -p "$target"
for arg; do
[ -d "$target/${arg##*/}" ] && die "$target/${arg##*/} is a directory"
cp "$arg" "$target/${arg##*/}"
# Most implementations set the mode to 0755 by default when -t is set.
chmod "${mode:=0755}" "$target/${arg##*/}"
done
else
case "$2" in */*) [ "$mkdirp" ] || [ -d "${2%/*}" ] || die "${2%/*} doesn't exist"
mkdir -p "${2%/*}"
esac
[ -d "$2" ] && die "$2 is a directory"
cp "$1" "$2"
chmod "${mode:=0755}" "$2"
fi
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