makepkg, repo-add: replace external commands with bash substitutions where possible

This also removes the awk dependency from makepkg and repo-add.

Signed-off-by: Cedric Staniewski <cedric@gmx.ca>
Signed-off-by: Allan McRae <allan@archlinux.org>
Signed-off-by: Dan McGee <dan@archlinux.org>

scripts/makepkg.sh.in

@@ -27,7 +27,7 @@
 
 # makepkg uses quite a few external programs during its execution. You
 # need to have at least the following installed for makepkg to function:
-#   awk, bsdtar (libarchive), bzip2, coreutils, fakeroot, find (findutils),
+#   bsdtar (libarchive), bzip2, coreutils, fakeroot, find (findutils),
 #   getopt (util-linux), gettext, grep, gzip, openssl, sed
 
 # gettext initialization
@@ -188,15 +188,15 @@ trap 'trap_exit "$(gettext "An unknown error has occurred. Exiting...")"' ERR
 # extract the filename from a source entry
 get_filename() {
 	# if a filename is specified, use it
-	local filename=$(echo $1 | sed 's|::.*||')
+	local filename="${1%%::*}"
 	# if it is just an URL, we only keep the last component
-	echo "$filename" | sed 's|^.*://.*/||g'
+	echo "${filename##*/}"
 }
 
 # extract the URL from a source entry
 get_url() {
 	# strip an eventual filename
-	echo $1 | sed 's|.*::||'
+	echo "${1#*::}"
 }
 
 ##
@@ -246,11 +246,11 @@ check_buildenv() {
 #          ? - not found
 ##
 in_opt_array() {
-	local needle=$(echo $1 | tr '[:upper:]' '[:lower:]'); shift
+	local needle="${1,,}"; shift
 
 	local opt
 	for opt in "$@"; do
-		opt=$(echo $opt | tr '[:upper:]' '[:lower:]')
+		opt="${opt,,}"
 		if [ "$opt" = "$needle" ]; then
 			echo 'y' # Enabled
 			return
@@ -282,14 +282,14 @@ in_array() {
 get_downloadclient() {
 	# $1 = URL with valid protocol prefix
 	local url=$1
-	local proto=$(echo "$url" | sed 's|://.*||')
+	local proto="${url%%://*}"
 
 	# loop through DOWNLOAD_AGENTS variable looking for protocol
 	local i
 	for i in "${DLAGENTS[@]}"; do
-		local handler=$(echo $i | sed 's|::.*||')
+		local handler="${i%%::*}"
 		if [ "$proto" = "$handler" ]; then
-			agent=$(echo $i | sed 's|^.*::||')
+			agent="${i##*::}"
 			break
 		fi
 	done
@@ -302,7 +302,7 @@ get_downloadclient() {
 	fi
 
 	# ensure specified program is installed
-	local program="$(echo $agent | awk '{print $1 }')"
+	local program="${agent%% *}"
 	if [ ! -x "$program" ]; then
 		local baseprog=$(basename $program)
 		error "$(gettext "The download program %s is not installed.")" "$baseprog"
@@ -321,7 +321,7 @@ download_file() {
 	# destination file
 	local file=$3
 	# temporary download file, default to last component of the URL
-	local dlfile=$(echo "$url" | sed 's|^.*://.*/||g')
+	local dlfile="${url##*/}"
 
 	# replace %o by the temporary dlfile if it exists
 	if echo "$dlcmd" | grep -q "%o" ; then
@@ -431,7 +431,7 @@ remove_deps() {
 	local dep depstrip deplist
 	deplist=""
 	for dep in $pkgdeps; do
-		depstrip=$(echo $dep | sed -e 's|=.*$||' -e 's|>.*$||' -e 's|<.*$||')
+		depstrip="${dep%%[<=>]*}"
 		deplist="$deplist $depstrip"
 	done
 
@@ -513,7 +513,7 @@ generate_checksums() {
 
 	local integ
 	for integ in ${INTEGRITY_CHECK[@]}; do
-		integ="$(echo $integ | tr '[:upper:]' '[:lower:]')"
+		integ="${integ,,}"
 		case "$integ" in
 			md5|sha1|sha256|sha384|sha512) : ;;
 			*)
@@ -546,7 +546,8 @@ generate_checksums() {
 				fi
 			fi
 
-			local sum="$(openssl dgst -${integ} "$file" | awk '{print $NF}')"
+			local sum="$(openssl dgst -${integ} "$file")"
+			sum=${sum##* }
 			[ $ct -gt 0 ] && echo -n "$indent"
 			echo -n "'$sum'"
 			ct=$(($ct+1))
@@ -591,8 +592,9 @@ check_checksums() {
 				fi
 
 				if [ $found -gt 0 ] ; then
-					local expectedsum="$(echo ${integrity_sums[$idx]} | tr '[A-F]' '[a-f]')"
+					local expectedsum="${integrity_sums[$idx],,}"
-					local realsum="$(openssl dgst -${integ} "$file" | awk '{print $NF}')"
+					local realsum="$(openssl dgst -${integ} "$file")"
+					realsum="${realsum##* }"
 					if [ "$expectedsum" = "$realsum" ]; then
 						echo "$(gettext "Passed")" >&2
 					else
@@ -882,7 +884,8 @@ write_pkginfo() {
 	else
 		local packager="Unknown Packager"
 	fi
-	local size=$(du -sk | awk '{print $1 * 1024}')
+	local size="$(du -sk)"
+	size="$(( ${size%%[^0-9]*} * 1024 ))"
 
 	msg2 "$(gettext "Generating .PKGINFO file...")"
 	echo "# Generated by makepkg $myver" >.PKGINFO
@@ -1588,7 +1591,7 @@ if [ "$CLEANCACHE" -eq 1 ]; then
 		echo -n "$(gettext "    Are you sure you wish to do this? ")"
 		echo -n "$(gettext "[Y/n]")"
 		read answer
-		answer=$(echo $answer | tr '[:lower:]' '[:upper:]')
+		answer="${answer^^}"
 		if [ "$answer" = "$(gettext "YES")" -o "$answer" = "$(gettext "Y")" ]; then
 			rm "$SRCDEST"/*
 			if [ $? -ne 0 ]; then

scripts/repo-add.sh.in

@@ -136,7 +136,8 @@ db_write_delta()
 		echo -e "%DELTAS%" >>$deltas
 	fi
 	# get md5sum and compressed size of package
-	md5sum="$(openssl dgst -md5 "$deltafile" | awk '{print $NF}')"
+	md5sum="$(openssl dgst -md5 "$deltafile")"
+	md5sum="${md5sum##* }"
 	csize=$(@SIZECMD@ "$deltafile")
 
 	oldfile=$(xdelta3 printhdr $deltafile | grep "XDELTA filename (source)" | sed 's/.*: *//')
@@ -213,7 +214,8 @@ db_write_entry()
 	IFS=$OLDIFS
 
 	# get md5sum and compressed size of package
-	md5sum="$(openssl dgst -md5 "$pkgfile" | awk '{print $NF}')"
+	md5sum="$(openssl dgst -md5 "$pkgfile")"
+	md5sum="${md5sum##* }"
 	csize=$(@SIZECMD@ "$pkgfile")
 
 	# ensure $pkgname and $pkgver variables were found