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#!/usr/bin/env bash
DIR="${BASH_SOURCE%/*}"
# if no CHECKPATCH is explicitly given by the environment, try to
# locate checkpatch.pl: first take the one from the path, then check
# for a local copy of the linux headers, finally try sources downloaded
# with OP-TEE (for QEMU)
if [ -z "$CHECKPATCH" ]; then
CHECKPATCH=$(command -v checkpatch.pl)
fi
if [ -z "$CHECKPATCH" ]; then
CHECKPATCH=$(find /usr/src/linux-headers* -name checkpatch.pl -print -quit)
fi
if [ -z "$CHECKPATCH" ]; then
CHECKPATCH=$(find "$PWD/../linux" -name checkpatch.pl -print -quit)
fi
source "$DIR/checkpatch_inc.sh"
hash $CHECKPATCH 2>/dev/null ||
{ echo >&2 "Could not find checkpatch.pl, aborting"; exit 1; }
help() {
cat <<-EOF
Usage:
checkpatch.sh [--working]
checkpatch.sh <COMMIT>...
checkpatch.sh <SELECTION>...
checkpatch.sh --diff <COMMIT> <COMMIT>
checkpatch.sh --cached
checkpatch.sh --help
Args:
<COMMIT> Any commit or any number of commits.
<SELECTION> Any number of Git Revision Selections. (requires git v2.19)
https://git-scm.com/book/en/v2/Git-Tools-Revision-Selection
Options:
--working Check the working area [Default].
--cached Check the staging area.
--diff <commit1> <commit2> Check the diff between commit1 and commit2.
--help Print this help message.
Examples:
checkpatch.sh commit1 commit2 commit3 Check commit1, commit2, and commit3.
checkpatch.sh HEAD~5 Check the commit 5 revisions before
the current HEAD.
checkpatch.sh commit1..^commit2 Check each commit from commit1 to
commit2 inclusively.
(requires git v2.19)
checkpatch.sh HEAD~5..HEAD~1 Check each commit from HEAD~5 to
HEAD~1 exclusively, aka not including
HEAD~1. (requires git v2.19)
checkpatch.sh commit1...tags/tag1 Check each commit that exists
exclusively within the history of
only one of each given revision.
(requires git v2.19)
checkpatch.sh HEAD~10-5 Check 5 commits moving forward in
history starting from HEAD~10.
(requires git v2.19)
checkpatch.sh branch1 tags/tag1 Check the HEAD of branch1 and the
HEAD of tag1. (requires git v2.19)
EOF
exit 1
}
op=${1:---working}
case "$op" in
--cached)
echo "Checking staging area: "
checkstaging
;;
--diff)
echo "Checking diff (diff $1...$2)"
checkdiff "$2" "$3"
;;
--working)
echo "Checking working area: "
checkworking
;;
--help|-h)
help
;;
*)
echo "Checking commit(s):"
read -r MAJOR MINOR < <(git --version | awk -F '[. ]' '{print $3, $4}')
if (( MAJOR < 2 )) || (( MAJOR == 2 && MINOR < 19 )); then
for c in "$@"; do checkpatch "$c"; done
else
for arg in "$@"; do
# parse the argument into a git object or list of git objects
object="$(git rev-parse "${arg}")" || continue
# run checkpatch if the parsed argument represents a single commit hash
if git cat-file -e "${object}" 2>/dev/null; then
checkpatch "${object}"
else
# expand the object list and run checkpatch on each commit id
commits="$(echo "${object}" | git rev-list --stdin)"
for c in ${commits}; do checkpatch "$c"; done
fi
done
fi
;;
esac
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