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|
#!/bin/sh
#
# Part of Gerrit Code Review (http://code.google.com/p/gerrit/)
#
# 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.
#
CHANGE_ID_AFTER="Bug|Issue"
MSG="$1"
# Check for, and add if missing, a unique Change-Id
#
add_ChangeId() {
clean_message=`sed -e '
/^diff --git a\/.*/{
s///
q
}
/^Signed-off-by:/d
/^#/d
' "$MSG" | git stripspace`
if test -z "$clean_message"
then
return
fi
# Does Change-Id: already exist? if so, exit (no change).
if grep -i '^Change-Id:' "$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
$AWK '
# Skip lines starting with "#" without any spaces before it.
/^#/ { 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 a/ {
if (blankLines > 1) {
blankLines = 1
}
while (getline) { }
next
}
# Handle comments and continuations in tags ([foo: bar] etc)
(caught == 1) && /^[ []/ {
if (lines != "") {
lines = lines "\n"
}
lines = lines $0
next
}
# Handle normal lines (ie. not starting with some tag like "Signed-off-by:").
# If normal text appears after tags were "caught", handle them as normal text, too.
# Also count blank lines in blankLines.
!/^[a-zA-Z0-9-]+:/ || /^[a-zA-Z0-9-]+:\/\// {
if ($0 == "") {
blankLines++
next
} else {
for (i = 0; i < blankLines; i++) {
print ""
}
blankLines = 0
}
if (caught == 1) {
caught = 0
print lines
lines = ""
}
print $0
next
}
# Handle tags. They are "caught" and collected in the "lines" variable
{
caught = 1
if (lines != "") {
lines = lines "\n";
}
lines = lines $0
}
# Tag handling:
# If last line before tags was not blank, there were no tags.
# In that case, print everything, plus a blank line, followed by Change-Id.
# Otherwise there were tags. Look for the right place to inject Change-Id,
# by considering CHANGE_ID_AFTER. Tags listed in it (case insensitive) come first,
# then Change-Id, then everything else (eg. Signed-off-by:).
END {
unprinted = 1
if (blankLines == 0) {
if (lines == "") {
print ""
} else {
print lines "\n"
}
} else {
for (i = 0; i < blankLines; i++) {
print ""
}
changeIdAfter = "^(" tolower("'"$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
|
