User:SamanthaNguyen/git/commit-msg


 * 1) !/bin/sh
 * 2) From Gerrit Code Review 2.7-rc2-507-g1e7090b
 * 3) Part of Gerrit Code Review (http://code.google.com/p/gerrit/)
 * 4) Copyright (C) 2009 The Android Open Source Project
 * 5) Licensed under the Apache License, Version 2.0 (the "License");
 * 6) you may not use this file except in compliance with the License.
 * 7) You may obtain a copy of the License at
 * 8) http://www.apache.org/licenses/LICENSE-2.0
 * 9) Unless required by applicable law or agreed to in writing, software
 * 10) distributed under the License is distributed on an "AS IS" BASIS,
 * 11) WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * 12) See the License for the specific language governing permissions and
 * 13) limitations under the License.
 * 1) Unless required by applicable law or agreed to in writing, software
 * 2) distributed under the License is distributed on an "AS IS" BASIS,
 * 3) WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * 4) See the License for the specific language governing permissions and
 * 5) limitations under the License.

unset GREP_OPTIONS

CHANGE_ID_AFTER="Bug|Issue" MSG="$1"

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
 * 1) Check for, and add if missing, a unique Change-Id

# 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

# 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 "#" 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/ { 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