scripts: check commits with checkpatch

The new option -n allows to give a number of commits to check
from the git HEAD.
If neither -n nor patch files are given, the commits after
origin/master are checked.

Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>
Acked-by: Bruce Richardson <bruce.richardson@intel.com>

diff --git a/scripts/checkpatches.sh b/scripts/checkpatches.sh
index 4cae86d..7111558 100755 (executable)
--- a/scripts/checkpatches.sh
+++ b/scripts/checkpatches.sh
@@ -48,17 +48,19 @@ NEW_TYPEDEFS,COMPARISON_TO_NULL"
 
 print_usage () {
        cat <<- END_OF_HELP
-       usage: $(basename $0) [-q] [-v] [patch1 [patch2] ...]]
+       usage: $(basename $0) [-q] [-v] [-nX|patch1 [patch2] ...]]
 
        Run Linux kernel checkpatch.pl with DPDK options.
        The environment variable DPDK_CHECKPATCH_PATH must be set.
        END_OF_HELP
 }
 
+number=0
 quiet=false
 verbose=false
-while getopts hqv ARG ; do
+while getopts hn:qv ARG ; do
        case $ARG in
+               n ) number=$OPTARG ;;
                q ) quiet=true && options="$options --no-summary" ;;
                v ) verbose=true ;;
                h ) print_usage ; exit 0 ;;
@@ -74,17 +76,42 @@ if [ ! -x "$DPDK_CHECKPATCH_PATH" ] ; then
        exit 1
 fi
 
+total=0
 status=0
-for p in "$@" ; do
-       ! $verbose || printf '\n### %s\n\n' "$p"
-       report=$($DPDK_CHECKPATCH_PATH $options "$p" 2>/dev/null)
+
+check () { # <patch> <commit> <title>
+       total=$(($total + 1))
+       ! $verbose || printf '\n### %s\n\n' "$3"
+       if [ -n "$1" ] ; then
+               report=$($DPDK_CHECKPATCH_PATH $options "$1" 2>/dev/null)
+       elif [ -n "$2" ] ; then
+               report=$(git format-patch --no-stat --stdout -1 $commit |
+                       $DPDK_CHECKPATCH_PATH $options - 2>/dev/null)
+       fi
        [ $? -ne 0 ] || continue
-       $verbose || printf '\n### %s\n\n' "$p"
+       $verbose || printf '\n### %s\n\n' "$3"
        printf '%s\n' "$report" | head -n -6
        status=$(($status + 1))
-done
-pass=$(($# - $status))
-$quiet || printf '%d/%d valid patch' $pass $#
+}
+
+if [ -z "$1" ] ; then
+       if [ $number -eq 0 ] ; then
+               commits=$(git rev-list origin/master..)
+       else
+               commits=$(git rev-list --max-count=$number HEAD)
+       fi
+       for commit in $commits ; do
+               subject=$(git log --format='%s' -1 $commit)
+               check '' $commit "$subject"
+       done
+else
+       for patch in "$@" ; do
+               subject=$(sed -n 's,^Subject: ,,p' "$patch")
+               check "$patch" '' "$subject"
+       done
+fi
+pass=$(($total - $status))
+$quiet || printf '%d/%d valid patch' $pass $total
 $quiet || [ $pass -le 1 ] || printf 'es'
 $quiet || printf '\n'
 exit $status