[pacman-contrib] [PATCH] Port parseopts to libmakepkg

[Eli Schwartz]

Replace m4 macros with use of libmakepkg extensions. For now, only
parseopts is implemented, as it was directly added to libmakepkg in
2016.

The other major lib/ analogue is message.sh, which does not currently
map together due to deviations, which are fixed in pacman-git.

Signed-off-by: Eli Schwartz <eschwartz at archlinux.org>
---
 lib/Makefile.am    |   1 -
 lib/parseopts.sh   | 137 ---------------------------------------------
 src/Makefile.am    |   5 +-
 src/paccache.sh.in |   5 +-
 4 files changed, 7 insertions(+), 141 deletions(-)
 delete mode 100644 lib/parseopts.sh

diff --git a/lib/Makefile.am b/lib/Makefile.am
index 8b18cb5..d2229f7 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -4,7 +4,6 @@ DIST_SUBDIRS = $(SUBDIRS)
 
 EXTRA_DIST = \
 	output_format.sh \
-	parseopts.sh \
 	size_to_human.sh \
 	term_colors.sh
 
diff --git a/lib/parseopts.sh b/lib/parseopts.sh
deleted file mode 100644
index cf6aa6c..0000000
--- a/lib/parseopts.sh
+++ /dev/null
@@ -1,137 +0,0 @@
-# getopt-like parser
-parseopts() {
-	local opt= optarg= i= shortopts=$1
-	local -a longopts=() unused_argv=()
-
-	shift
-	while [[ $1 && $1 != '--' ]]; do
-		longopts+=("$1")
-		shift
-	done
-	shift
-
-	longoptmatch() {
-		local o longmatch=()
-		for o in "${longopts[@]}"; do
-			if [[ ${o%:} = "$1" ]]; then
-				longmatch=("$o")
-				break
-			fi
-			[[ ${o%:} = "$1"* ]] && longmatch+=("$o")
-		done
-
-		case ${#longmatch[*]} in
-			1)
-				# success, override with opt and return arg req (0 == none, 1 == required)
-				opt=${longmatch%:}
-				if [[ $longmatch = *: ]]; then
-					return 1
-				else
-					return 0
-				fi ;;
-			0)
-				# fail, no match found
-				return 255 ;;
-			*)
-				# fail, ambiguous match
-				printf "@SCRIPTNAME@: $(gettext "option '%s' is ambiguous; possibilities:")" "--$1"
-				printf " '%s'" "${longmatch[@]%:}"
-				printf '\n'
-				return 254 ;;
-		esac >&2
-	}
-
-	while (( $# )); do
-		case $1 in
-			--) # explicit end of options
-				shift
-				break
-				;;
-			-[!-]*) # short option
-				for (( i = 1; i < ${#1}; i++ )); do
-					opt=${1:i:1}
-
-					# option doesn't exist
-					if [[ $shortopts != *$opt* ]]; then
-						printf "@SCRIPTNAME@: $(gettext "invalid option") -- '%s'\n" "$opt" >&2
-						OPTRET=(--)
-						return 1
-					fi
-
-					OPTRET+=("-$opt")
-					# option requires optarg
-					if [[ $shortopts = *$opt:* ]]; then
-						# if we're not at the end of the option chunk, the rest is the optarg
-						if (( i < ${#1} - 1 )); then
-							OPTRET+=("${1:i+1}")
-							break
-						# if we're at the end, grab the the next positional, if it exists
-						elif (( i == ${#1} - 1 )) && [[ $2 ]]; then
-							OPTRET+=("$2")
-							shift
-							break
-						# parse failure
-						else
-							printf "@SCRIPTNAME@: $(gettext "option requires an argument") -- '%s'\n" "$opt" >&2
-							OPTRET=(--)
-							return 1
-						fi
-					fi
-				done
-				;;
-			--?*=*|--?*) # long option
-				IFS='=' read -r opt optarg <<< "${1#--}"
-				longoptmatch "$opt"
-				case $? in
-					0)
-						# parse failure
-						if [[ $optarg ]]; then
-							printf "@SCRIPTNAME@: $(gettext "option '%s' does not allow an argument")\n" "--$opt" >&2
-							OPTRET=(--)
-							return 1
-						# --longopt
-						else
-							OPTRET+=("--$opt")
-						fi
-						;;
-					1)
-						# --longopt=optarg
-						if [[ $optarg ]]; then
-							OPTRET+=("--$opt" "$optarg")
-						# --longopt optarg
-						elif [[ $2 ]]; then
-							OPTRET+=("--$opt" "$2" )
-							shift
-						# parse failure
-						else
-							printf "@SCRIPTNAME@: $(gettext "option '%s' requires an argument")\n" "--$opt" >&2
-							OPTRET=(--)
-							return 1
-						fi
-						;;
-					254)
-						# ambiguous option -- error was reported for us by longoptmatch()
-						OPTRET=(--)
-						return 1
-						;;
-					255)
-						# parse failure
-						printf "@SCRIPTNAME@: $(gettext "invalid option") '--%s'\n" "$opt" >&2
-						OPTRET=(--)
-						return 1
-						;;
-				esac
-				;;
-			*) # non-option arg encountered, add it as a parameter
-				unused_argv+=("$1")
-				;;
-		esac
-		shift
-	done
-
-	# add end-of-opt terminator and any leftover positional parameters
-	OPTRET+=('--' "${unused_argv[@]}" "$@")
-	unset longoptmatch
-
-	return 0
-}
diff --git a/src/Makefile.am b/src/Makefile.am
index 08dde4b..f1c6ba2 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -92,7 +92,8 @@ AM_CFLAGS = \
 	$(LIBALPM_CFLAGS)
 
 edit = sed \
-	-e 's|@bindir[@]|${bindir}|g' \
+	-e 's|@bindir[@]|$(bindir)|g' \
+	-e 's|@datarootdir[@]|$(datarootdir)|g' \
 	-e 's|@sysconfdir[@]|$(sysconfdir)|g' \
 	-e 's|@localstatedir[@]|$(localstatedir)|g' \
 	-e 's|@PACKAGE_VERSION[@]|$(REAL_PACKAGE_VERSION)|g' \
@@ -122,7 +123,7 @@ $(OURFILES): Makefile
 all-am: $(OURSCRIPTS) $(OURFILES)
 
 checkupdates: $(srcdir)/checkupdates.sh.in $(top_srcdir)/lib/output_format.sh $(top_srcdir)/lib/term_colors.sh
-paccache: $(srcdir)/paccache.sh.in $(top_srcdir)/lib/output_format.sh $(top_srcdir)/lib/parseopts.sh $(top_srcdir)/lib/size_to_human.sh $(top_srcdir)/lib/term_colors.sh
+paccache: $(srcdir)/paccache.sh.in $(top_srcdir)/lib/output_format.sh $(top_srcdir)/lib/size_to_human.sh $(top_srcdir)/lib/term_colors.sh
 pacdiff: $(srcdir)/pacdiff.sh.in $(top_srcdir)/lib/output_format.sh $(top_srcdir)/lib/term_colors.sh
 paclist: $(srcdir)/paclist.sh.in
 paclog-pkglist: $(srcdir)/paclog-pkglist.sh.in
diff --git a/src/paccache.sh.in b/src/paccache.sh.in
index 9c37c65..8334ecd 100644
--- a/src/paccache.sh.in
+++ b/src/paccache.sh.in
@@ -25,6 +25,8 @@ shopt -s extglob
 declare -r myname='paccache'
 declare -r myver='@PACKAGE_VERSION@'
 
+LIBRARY=${LIBRARY:-'@datarootdir@/makepkg'}
+
 declare -a cachedirs=() candidates=() cmdopts=() whitelist=() blacklist=()
 declare -i delete=0 dryrun=0 filecount=0 move=0 needsroot=0 totalsaved=0 verbose=0
 declare -i min_atime=0 min_mtime=0
@@ -34,7 +36,8 @@ QUIET=0
 USE_COLOR='y'
 
 m4_include(../lib/output_format.sh)
-m4_include(../lib/parseopts.sh)
+# Import libmakepkg
+source "$LIBRARY"/util/parseopts.sh
 
 die() {
 	error "$@"
-- 
2.21.0