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- #!/bin/sh
- # Copyright (C) 2020 Free Software Foundation, Inc.
- #
- # This file is part of GCC.
- #
- # GCC is free software; you can redistribute it and/or modify
- # it under the terms of the GNU General Public License as published by
- # the Free Software Foundation; either version 3, or (at your option)
- # any later version.
- #
- # GCC is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License
- # along with GCC; see the file COPYING. If not, write to
- # the Free Software Foundation, 51 Franklin Street, Fifth Floor,
- # Boston, MA 02110-1301, USA.
- COMMIT_MSG_FILE=$1
- COMMIT_SOURCE=$2
- SHA1=$3
- # We might be on a branch before the file was added.
- if ! [ -x contrib/mklog.py ]; then exit 0; fi
- # Can't do anything if $COMMIT_MSG_FILE isn't a file.
- if ! [ -f "$COMMIT_MSG_FILE" ]; then exit 0; fi
- # Don't do anything unless requested to.
- if [ -z "$GCC_FORCE_MKLOG" ]; then exit 0; fi
- if [ -z "$COMMIT_SOURCE" ] || [ $COMMIT_SOURCE = template ]; then
- # No source or "template" means new commit.
- cmd="diff --cached"
- elif [ $COMMIT_SOURCE = message ]; then
- # "message" means -m; assume a new commit if there are any changes staged.
- if ! git diff --cached --quiet; then
- cmd="diff --cached"
- else
- cmd="diff --cached HEAD^"
- fi
- elif [ $COMMIT_SOURCE = commit ]; then
- # The message of an existing commit. If it's HEAD, assume --amend;
- # otherwise, assume a new commit with -C.
- if [ $SHA1 = HEAD ]; then
- cmd="diff --cached HEAD^"
- if [ "$(git config gcc-config.mklog-hook-type)" = "smart-amend" ]; then
- # Check if the existing message still describes the staged changes.
- f=$(mktemp /tmp/git-commit.XXXXXX) || exit 1
- git log -1 --pretty=email HEAD > $f
- printf '\n---\n\n' >> $f
- git $cmd >> $f
- if contrib/gcc-changelog/git_email.py "$f" >/dev/null 2>&1; then
- # Existing commit message is still OK for amended commit.
- rm $f
- exit 0
- fi
- rm $f
- fi
- else
- cmd="diff --cached"
- fi
- else
- # Do nothing for merge or squash.
- exit 0
- fi
- # Save diff to a file if requested.
- DIFF_FILE=$(git config gcc-config.diff-file)
- if ! [ -z "$DIFF_FILE" ]; then
- tee="tee $DIFF_FILE"
- else
- tee="cat"
- fi
- git $cmd | $tee | git gcc-mklog $GCC_MKLOG_ARGS -c "$COMMIT_MSG_FILE"
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