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pacman/scripts/library/parse_options.sh
Dave Reisner e27a5c8851 parse-options: simplify unused-arg & parameter printing
Signed-off-by: Dave Reisner <d@falconindy.com>
2011-06-24 00:02:06 -05:00

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# getopt like parser
parse_options() {
local short_options=$1; shift;
local long_options=$1; shift;
local ret=0;
local unused_options=""
local i
while [[ -n $1 ]]; do
if [[ ${1:0:2} = '--' ]]; then
if [[ -n ${1:2} ]]; then
local match=""
for i in ${long_options//,/ }; do
if [[ ${1:2} = ${i//:} ]]; then
match=$i
break
fi
done
if [[ -n $match ]]; then
if [[ ${1:2} = $match ]]; then
printf ' %s' "$1"
else
if [[ -n $2 ]]; then
printf ' %s' "$1"
shift
printf " '%s'" "$1"
else
printf "@SCRIPTNAME@: $(gettext "option %s requires an argument")" "'$1'" >&2
ret=1
fi
fi
else
echo "@SCRIPTNAME@: $(gettext "unrecognized option") '$1'" >&2
ret=1
fi
else
shift
break
fi
elif [[ ${1:0:1} = '-' ]]; then
for ((i=1; i<${#1}; i++)); do
if [[ $short_options =~ ${1:i:1} ]]; then
if [[ $short_options =~ ${1:i:1}: ]]; then
if [[ -n ${1:$i+1} ]]; then
printf ' -%s' "${1:i:1}"
printf " '%s'" "${1:$i+1}"
else
if [[ -n $2 ]]; then
printf ' -%s' "${1:i:1}"
shift
printf " '%s'" "${1}"
else
printf "@SCRIPTNAME@: $(gettext "option %s requires an argument")" "'-${1:i:1}'" >&2
ret=1
fi
fi
break
else
printf ' -%s' "${1:i:1}"
fi
else
echo "@SCRIPTNAME@: $(gettext "unrecognized option") '-${1:i:1}'" >&2
ret=1
fi
done
else
unused_options="${unused_options} '$1'"
fi
shift
done
printf " --"
[[ $unused_options ]] && printf ' %s' "${unused_options[@]}"
[[ $1 ]] && printf " '%s'" "$@"
printf "\n"
return $ret
}