makepkg: move option parsing code to separate file

This move the getopt replacement function parse_options out of
makepkg.sh.in and into a separate file.  The code is inserted
into the relevant place in makepkg using m4.

This will allow the reuse of the option parsing code in other
scripts (i.e. pacman-key) while avoiding code duplication.

Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>

1 files changed, 87 insertions, 0 deletions

diff --git a/scripts/library/parse_options.sh b/scripts/library/parse_options.sh
new file mode 100644
index 00000000..32aa0bee
--- /dev/null
+++ b/scripts/library/parse_options.sh
@@ -0,0 +1,87 @@
+# 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
+							echo "@SCRIPTNAME@: option '$1' $(gettext "requires an argument")" >&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
+								echo "@SCRIPTNAME@: option $(gettext "requires an argument") -- '${1:i:1}'" >&2
+								ret=1
+							fi
+						fi
+						break
+					else
+						printf ' -%s' "${1:i:1}"
+					fi
+				else
+					echo "@SCRIPTNAME@: $(gettext "invalid option") -- '${1:i:1}'" >&2
+					ret=1
+				fi
+			done
+		else
+			unused_options="${unused_options} '$1'"
+		fi
+		shift
+	done
+
+	printf " --"
+	if [[ -n $unused_options ]]; then
+		for i in ${unused_options[@]}; do
+			printf ' %s' "$i"
+		done
+	fi
+	if [[ -n $1 ]]; then
+		while [[ -n $1 ]]; do
+			printf " '%s'" "${1}"
+			shift
+		done
+	fi
+	printf "\n"
+
+	return $ret
+}
\ No newline at end of file