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parse_options: implement optional arguments

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This allows options specified with a trailing "::" to optionally
take arguments.

Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>
This commit is contained in:
Allan McRae 2011-07-05 19:01:22 +10:00 committed by Dan McGee
parent ddb8617d96
commit 87ee38d8b3
1 changed files with 15 additions and 4 deletions
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19
scripts/library/parse_options.sh
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@ -17,7 +17,12 @@ parse_options() {
fi fi
done done
if [[ -n $match ]]; then if [[ -n $match ]]; then
if [[ ${1:2} = $match ]]; then local needsargument=0
[[ ${match} = ${1:2}: ]] && needsargument=1
[[ ${match} = ${1:2}:: && -n $2 && ${2:0:1} != "-" ]] && needsargument=1
if (( ! needsargument )); then
printf ' %s' "$1" printf ' %s' "$1"
else else
if [[ -n $2 ]]; then if [[ -n $2 ]]; then
@ -40,7 +45,15 @@ parse_options() {
elif [[ ${1:0:1} = '-' ]]; then elif [[ ${1:0:1} = '-' ]]; then
for ((i=1; i<${#1}; i++)); do for ((i=1; i<${#1}; i++)); do
if [[ $short_options =~ ${1:i:1} ]]; then if [[ $short_options =~ ${1:i:1} ]]; then
if [[ $short_options =~ ${1:i:1}: ]]; then local needsargument=0
[[ $short_options =~ ${1:i:1}: && ! $short_options =~ ${1:i:1}:: ]] && needsargument=1
[[ $short_options =~ ${1:i:1}:: && \
( -n ${1:$i+1} || ( -n $2 && ${2:0:1} != "-" ) ) ]] && needsargument=1
if (( ! needsargument )); then
printf ' -%s' "${1:i:1}"
else
if [[ -n ${1:$i+1} ]]; then if [[ -n ${1:$i+1} ]]; then
printf ' -%s' "${1:i:1}" printf ' -%s' "${1:i:1}"
printf " '%s'" "${1:$i+1}" printf " '%s'" "${1:$i+1}"
@ -55,8 +68,6 @@ parse_options() {
fi fi
fi fi
break break
else
printf ' -%s' "${1:i:1}"
fi fi
else else
echo "@SCRIPTNAME@: $(gettext "unrecognized option") '-${1:i:1}'" >&2 echo "@SCRIPTNAME@: $(gettext "unrecognized option") '-${1:i:1}'" >&2