[dpdk-stable] [PATCH v2 2/2] devtools: fix patches missing if range newer than HEAD

[Xueming Li <xuemingl@nvidia.com>]

Current fix scan scripts scanned specified range in HEAD branch.
When users ran it in an earlier branch, few patches were scanned
due to the fixes in the range are newer and not merged to HEAD
branch.

This patch introduces optional <branch> argument, default to HEAD
if not specified. Checks the <range> specified in parameter must
being merged in <branch>.

Fixes: 752d8e097ec1 ("scripts: show fixes with release version of bug")
Cc: Thomas Monjalon <thomas@monjalon.net>
Cc: stable@dpdk.org
Cc: Christian Ehrhardt <christian.ehrhardt@canonical.com>

Signed-off-by: Xueming Li <xuemingl@nvidia.com>
---
 devtools/git-log-fixes.sh | 23 +++++++++++++++++------
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/devtools/git-log-fixes.sh b/devtools/git-log-fixes.sh
index 153ba5b438..51d8b19942 100755
--- a/devtools/git-log-fixes.sh
+++ b/devtools/git-log-fixes.sh
@@ -4,7 +4,7 @@
 
 print_usage ()
 {
-	echo "usage: $(basename $0) [-h] <git_range>"
+	echo "usage: $(basename $0) [-h] <git_range> [<branch>]"
 }
 
 print_help ()
@@ -15,6 +15,7 @@ print_help ()
 	Find fixes to backport on previous versions.
 	It looks for the word "fix" in the headline or a tag "Fixes" or "Reverts".
 	The oldest bug origin is printed as well as partially fixed versions.
+	It looks into current branch or the branch specified.
 	END_OF_HELP
 }
 
@@ -33,14 +34,22 @@ while getopts h ARG ; do
 done
 shift $(($OPTIND - 1))
 [ $# -ge 1 ] || usage_error 'range argument required'
-range="$*"
+range="$1"
+branch="$2"
+
+[ -n "$branch" ] || branch="HEAD"
+refbranch=$(git rev-parse --abbrev-ref $branch)
+range_last=$(git log --oneline $range |head -n1|cut -d' ' -f1)
+if ! git branch -a --contains $range_last |grep -q -e " $refbranch$" -e " remotes/$refbranch$"; then
+	echo "range $range not included by branch $refbranch"
+	exit 1
+fi
 
 # get major release version of a commit
 commit_version () # <hash>
 {
 	local VER="v*.*"
 	# use current branch as history reference
-	local refbranch=$(git rev-parse --abbrev-ref HEAD)
 	local tag=$( (git tag -l "$VER" --contains $1 --sort=creatordate --merged $refbranch 2>&- ||
 		# tag --merged option has been introduced in git 2.7.0
 		# below is a fallback in case of old git version
@@ -49,9 +58,11 @@ commit_version () # <hash>
 			sed "s,.\+,$t,"
 		done) |
 		head -n1)
-	if [ -z "$tag" ] ; then
-		# before -rc1 tag of release in progress
-		cat VERSION | cut -d'.' -f-2
+	if [ -z "$tag" ]; then
+		if [ "$branch" = 'HEAD' ]; then
+			# before -rc1 tag of release in progress
+			cat VERSION | cut -d'.' -f-2
+		fi
 	else
 		echo $tag | sed 's,^v,,' | sed 's,-rc.*,,'
 	fi
-- 
2.25.1