[U-Boot] [PATCH] MAKEALL: Add -m option to determine maintainers

[Marek Vasut]

The -m option lists boards including their maintainers emails. There are
multiple strategies used to retrieve these emails:

1) Check board/<boardname> with git log and use three most recent emails
2) Check board/<boardname> with git log and use three most used emails
3) Try finding board in MAINTAINERS file and retrieve all emails from there

The result is then sorted and unique results are retrieved and reported.

Signed-off-by: Marek Vasut <marex at denx.de>
Cc: Wolfgang Denk <wd at denx.de>
---
 MAKEALL |   91 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 files changed, 88 insertions(+), 3 deletions(-)

diff --git a/MAKEALL b/MAKEALL
index 0f2b4a1..2bfa696 100755
--- a/MAKEALL
+++ b/MAKEALL
@@ -17,6 +17,7 @@ usage()
 	  -v VENDOR, --vendor VENDOR   Build all boards with vendor VENDOR
 	  -s SOC,    --soc SOC         Build all boards with soc SOC
 	  -l,        --list            List all targets to be built
+	  -m,        --maintainers     List all targets and maintainer emails
 	  -h,        --help            This help output
 
 	Selections by these options are logically ANDed; if the same option
@@ -48,8 +49,8 @@ usage()
 	exit ${ret}
 }
 
-SHORT_OPTS="ha:c:v:s:l"
-LONG_OPTS="help,arch:,cpu:,vendor:,soc:,list"
+SHORT_OPTS="ha:c:v:s:lm"
+LONG_OPTS="help,arch:,cpu:,vendor:,soc:,list,maintainers"
 
 # Option processing based on util-linux-2.13/getopt-parse.bash
 
@@ -67,6 +68,7 @@ eval set -- "$TEMP"
 
 SELECTED=''
 ONLY_LIST=''
+PRINT_MAINTS=''
 
 while true ; do
 	case "$1" in
@@ -109,6 +111,10 @@ while true ; do
 	-l|--list)
 		ONLY_LIST='y'
 		shift ;;
+	-m|--maintainers)
+		ONLY_LIST='y'
+		PRINT_MAINTS='y'
+		shift ;;
 	-h|--help)
 		usage ;;
 	--)
@@ -483,11 +489,90 @@ LIST_nds32="$(boards_by_arch nds32)"
 
 #-----------------------------------------------------------------------
 
+get_target_location() {
+	target=$1
+
+	BOARD_NAME=""
+	CONFIG_NAME=""
+	board=""
+	vendor=""
+
+	# Automatic mode
+	line=`egrep -i "^[[:space:]]*${target}[[:space:]]" boards.cfg`
+	set ${line}
+
+	# add default board name if needed
+	[ $# = 3 ] && set ${line} ${1}
+
+	CONFIG_NAME="${1%_config}"
+
+	[ "${BOARD_NAME}" ] || BOARD_NAME="${1%_config}"
+
+	if [ "$4" = "-" ] ; then
+		board=${BOARD_NAME}
+	else
+		board="$4"
+	fi
+
+	[ $# -gt 4 ] && [ "$5" != "-" ] && vendor="$5"
+	[ $# -gt 6 ] && [ "$7" != "-" ] && {
+		tmp="${7%:*}"
+		if [ "$tmp" ] ; then
+			CONFIG_NAME="$tmp"
+		fi
+	}
+
+	# Assign board directory to BOARDIR variable
+	if [ -z "${vendor}" ] ; then
+	    BOARDDIR=${board}
+	else
+	    BOARDDIR=${vendor}/${board}
+	fi
+
+	echo "${CONFIG_NAME}:${BOARDDIR}"
+}
+
+get_target_maintainers() {
+	name=`echo $1 | cut -d : -f 1`
+
+	if ! grep -i ${name} MAINTAINERS >/dev/null 2>&1 ; then
+		echo ""
+		return ;
+	fi
+
+	line=`tac MAINTAINERS | grep -ni ${name} | cut -d : -f 1`
+	mail=`tac MAINTAINERS | tail -n +${line} | \
+		sed -n ":start /.*@.*/ { b mail } ; n ; b start ; :mail /.*@.*/ { p ; n ; b mail } ; q" | \
+		sed "s/^.*<//;s/>.*$//"`
+	echo "$mail"
+}
+
+list_target() {
+	if [ "$PRINT_MAINTS" != 'y' ] ; then
+		echo "$1"
+		return
+	fi
+
+	loc=`get_target_location $1`
+	maintainers_result=`get_target_maintainers ${loc} | tr " " "\n"`
+	dir=`echo ${loc} | cut -d ":" -f 2`
+	git_result=`git log --format=%aE board/${dir}`
+	git_result_recent=`echo ${git_result} | tr " " "\n" | head -n 3`
+	git_result_top=`echo ${git_result} | tr " " "\n" | \
+		sort | uniq -c | sort -nr | head -n 3 | \
+		sed "s/^ \+[0-9]\+ \+//"`
+
+	echo -n "$1:"
+	echo -e "$git_result_recent\n$git_result_top\n$maintainers_result" | \
+		sort -u | tr "\n" " " | sed "s/ $//"
+	echo ""
+}
+
 build_target() {
 	target=$1
 
 	if [ "$ONLY_LIST" == 'y' ] ; then
-		echo "$target"
+		list_target ${target}
 		return
 	fi
 
-- 
1.7.9