get_commits

#!/bin/bash
CWD=$PWD
tmp=/tmp/tmp_dir_for_get_commits
tag=
end=
output_dir=patches
filter=
files=
list=1
get=0
SLOG_FILTER=0
FIXES=0
MISSING=""

usage()
{
	cat <<EOF
Usage:
	${0##*/} --tag <tag> [options]

this script must run inside linux upstream git repository.

Options:
	--tag                     Get patches starting from this tag/commit
	--end                     Get patches up-to this tag/commit
	--files                   Filter commits to given file list
	--list-only               Only list changes
	--output-dir              Output dir for saving the patches
	--get-patches             Save patches to given output dir: '$output_dir'
	--fixes			  Get only patches with 'Fixes' in commit message
	--filter		  Get only patches missing in current OFED dir
	-h, --help                Show help message
EOF
}

while [ ! -z "$1" ]
do
	case "$1" in
		--list-only)
		list=1
		get=0
		;;
		--get-patches)
		list=0
		get=1
		;;
		--tag)
		tag="$2"
		shift
		;;
		--end)
		end="$2"
		shift
		;;
		--outdir)
		output_dir="$2"
		if [ -d "$output_dir" ]; then
			echo "Directory '$output_dir' exists.. Aborting"
			exit 1
		fi
		shift
		;;
		--output-dir)
		output_dir="$2"
		if [ -d "$output_dir" ]; then
			echo "Directory '$output_dir' exists.. Aborting"
			exit 1
		fi
		shift
		;;
		--files)
		files="$2"
		shift
		;;
		--filter)
		SLOG_FILTER=1
		;;
		--fixes)
		FIXES=1
		;;
		-h | *help)
		usage
		exit 0
		;;
		*)
		echo "-E- Unsupported option: $1" >&2
		exit 1
		;;
	esac
	shift
done
if [ $SLOG_FILTER -eq 1 ]; then
	cd $files
	SLOG=$(git log --oneline --color=never)
	cd $CWD
fi
files="$files/ofed_scripts/checkout_files"
git pull --dry-run | grep -q -v 'Already up-to-date.' && changed=1
if [ -z "$tag" ]; then
	echo "must provide --tag" >&2
	exit 1
fi

if [ -e "$files" ]; then
	files=`cat $files`
	filter="-- $files"
fi

echo TAG=$tag
echo Files: $files

if [ $list -eq 1 ]; then
	git log --oneline --decorate ${tag}..${end} $filter
elif [ $get -eq 1 ]; then
	echo "Take relevant patches.."
	git format-patch -N -o $output_dir ${tag}..${end} $filter
	git format-patch -N -qo $tmp ${tag}..${end}
fi
if [ $FIXES -eq 1 ] || [ $SLOG_FILTER -eq 1 ]; then
	echo "Analyzing patches.."
	for file in $(ls $output_dir)
	do
		if [ $FIXES -eq 1 ]; then
			if !(cat $output_dir/$file  | grep -Eq "^[F|f]ixes: [0-9a-f]{12,40}"); then
				echo "$output_dir/$file - Missing Fixes, removing.."
				rm -rf $output_dir/$file
				continue
			fi
		fi
		if [ $SLOG_FILTER -eq 1 ]; then
			sub=$(cat $output_dir/$file | grep -A1 -w "Subject" | xargs -d '\n' | grep -oE "[0-9]*\].*" | grep -oE "[a-zA-Z].*" | head -1)
			if (echo "$SLOG" | grep -qE "$sub *$");then
				echo "$output_dir/$file - Subject inside, removing.."
				rm -rf $output_dir/$file
				continue
			fi
		fi
	done
fi
#check and alert for partial patchs
if [ $get -eq 1 ];then
	echo "Looking for partial patches.."
	for file in $(ls $output_dir)
	do
		search=$(echo $file | sed 's/[0-9]*-//')
		search=${search::50}
		up_name=$(ls $tmp | grep $search)
		if [ "X$up_name" == "X" ];then
			MISSING="$MISSING$file\n"
			continue
		fi
		if (! cmp --silent $output_dir/$file $tmp/$up_name); then
			MISSING="$MISSING$file\n"
		fi
	done
	rm -rf $tmp
fi
echo
echo "-------------------------------------------------------------------------"
echo "See results in $output_dir"
echo "-------------------------------------------------------------------------"
if [ "X$MISSING" != "X" ];then
	echo
	echo "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@"
	echo "IMPORTANT: Patches that missing upstream parts: [PLEASE REVIEW]"

	printf $MISSING
	echo "@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@"
fi