diff options
Diffstat (limited to 'ext')
| -rwxr-xr-x | ext/git-commit-msg | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/ext/git-commit-msg b/ext/git-commit-msg new file mode 100755 index 000000000..60fe59da7 --- /dev/null +++ b/ext/git-commit-msg @@ -0,0 +1,191 @@ +#!/bin/sh +# From Gerrit Code Review 2.13.5-2617-gba50ae91fd +# +# Part of Gerrit Code Review (https://www.gerritcodereview.com/) +# +# Copyright (C) 2009 The Android Open Source Project +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +# + +unset GREP_OPTIONS + +CHANGE_ID_AFTER="Bug|Depends-On|Issue|Test|Feature|Fixes|Fixed" +MSG="$1" + +# Check for, and add if missing, a unique Change-Id +# +add_ChangeId() { + clean_message=`sed -e ' + /^diff --git .*/{ + s/// + q + } + /^Signed-off-by:/d + /^#/d + ' "$MSG" | git stripspace` + if test -z "$clean_message" + then + return + fi + + # Do not add Change-Id to temp commits + if echo "$clean_message" | head -1 | grep -q '^\(fixup\|squash\)!' + then + return + fi + + if test "false" = "`git config --bool --get gerrit.createChangeId`" + then + return + fi + + # Does Change-Id: already exist? if so, exit (no change). + if grep -i '^Change-Id:' "$MSG" >/dev/null + then + return + fi + + id=`_gen_ChangeId` + T="$MSG.tmp.$$" + AWK=awk + if [ -x /usr/xpg4/bin/awk ]; then + # Solaris AWK is just too broken + AWK=/usr/xpg4/bin/awk + fi + + # Get core.commentChar from git config or use default symbol + commentChar=`git config --get core.commentChar` + commentChar=${commentChar:-#} + + # How this works: + # - parse the commit message as (textLine+ blankLine*)* + # - assume textLine+ to be a footer until proven otherwise + # - exception: the first block is not footer (as it is the title) + # - read textLine+ into a variable + # - then count blankLines + # - once the next textLine appears, print textLine+ blankLine* as these + # aren't footer + # - in END, the last textLine+ block is available for footer parsing + $AWK ' + BEGIN { + # while we start with the assumption that textLine+ + # is a footer, the first block is not. + isFooter = 0 + footerComment = 0 + blankLines = 0 + } + + # Skip lines starting with commentChar without any spaces before it. + /^'"$commentChar"'/ { next } + + # Skip the line starting with the diff command and everything after it, + # up to the end of the file, assuming it is only patch data. + # If more than one line before the diff was empty, strip all but one. + /^diff --git / { + blankLines = 0 + while (getline) { } + next + } + + # Count blank lines outside footer comments + /^$/ && (footerComment == 0) { + blankLines++ + next + } + + # Catch footer comment + /^\[[a-zA-Z0-9-]+:/ && (isFooter == 1) { + footerComment = 1 + } + + /]$/ && (footerComment == 1) { + footerComment = 2 + } + + # We have a non-blank line after blank lines. Handle this. + (blankLines > 0) { + print lines + for (i = 0; i < blankLines; i++) { + print "" + } + + lines = "" + blankLines = 0 + isFooter = 1 + footerComment = 0 + } + + # Detect that the current block is not the footer + (footerComment == 0) && (!/^\[?[a-zA-Z0-9-]+:/ || /^[a-zA-Z0-9-]+:\/\//) { + isFooter = 0 + } + + { + # We need this information about the current last comment line + if (footerComment == 2) { + footerComment = 0 + } + if (lines != "") { + lines = lines "\n"; + } + lines = lines $0 + } + + # Footer handling: + # If the last block is considered a footer, splice in the Change-Id at the + # right place. + # Look for the right place to inject Change-Id by considering + # CHANGE_ID_AFTER. Keys listed in it (case insensitive) come first, + # then Change-Id, then everything else (eg. Signed-off-by:). + # + # Otherwise just print the last block, a new line and the Change-Id as a + # block of its own. + END { + unprinted = 1 + if (isFooter == 0) { + print lines "\n" + lines = "" + } + changeIdAfter = "^(" tolower("'"$CHANGE_ID_AFTER"'") "):" + numlines = split(lines, footer, "\n") + for (line = 1; line <= numlines; line++) { + if (unprinted && match(tolower(footer[line]), changeIdAfter) != 1) { + unprinted = 0 + print "Change-Id: I'"$id"'" + } + print footer[line] + } + if (unprinted) { + print "Change-Id: I'"$id"'" + } + }' "$MSG" > "$T" && mv "$T" "$MSG" || rm -f "$T" +} +_gen_ChangeIdInput() { + echo "tree `git write-tree`" + if parent=`git rev-parse "HEAD^0" 2>/dev/null` + then + echo "parent $parent" + fi + echo "author `git var GIT_AUTHOR_IDENT`" + echo "committer `git var GIT_COMMITTER_IDENT`" + echo + printf '%s' "$clean_message" +} +_gen_ChangeId() { + _gen_ChangeIdInput | + git hash-object -t commit --stdin +} + + +add_ChangeId |