1#!/bin/sh
2#
3# Copyright (c) 2010-2013,  Intel Corporation.
4#
5# SPDX-License-Identifier: GPL-2.0-or-later
6#
7
8#
9# This script is intended to be used to prepare a series of patches
10# and a cover letter in an appropriate and consistent format for
11# submission to Open Embedded and The Yocto Project, as well as to
12# related projects and layers.
13#
14
15ODIR=pull-$$
16RELATIVE_TO="master"
17COMMIT_ID="HEAD"
18PREFIX="PATCH"
19RFC=0
20
21usage() {
22CMD=$(basename $0)
23cat <<EOM
24Usage: $CMD [-h] [-o output_dir] [-m msg_body_file] [-s subject] [-r relative_to] [-i commit_id] [-d relative_dir] -u remote [-b branch] [-- <format-patch options>]
25  -b branch           Branch name in the specified remote (default: current branch)
26  -l local branch     Local branch name (default: HEAD)
27  -c                  Create an RFC (Request for Comment) patch series
28  -h                  Display this help message
29  -a                  Automatically push local branch (-l) to remote branch (-b),
30                      or set CPR_CONTRIB_AUTO_PUSH in env
31  -i commit_id        Ending commit (default: HEAD)
32  -m msg_body_file    The file containing a blurb to be inserted into the summary email
33  -o output_dir       Specify the output directory for the messages (default: pull-PID)
34  -p prefix           Use [prefix N/M] instead of [PATCH N/M] as the subject prefix
35  -r relative_to      Starting commit (default: master)
36  -s subject          The subject to be inserted into the summary email
37  -u remote           The git remote where the branch is located, or set CPR_CONTRIB_REMOTE in env
38  -d relative_dir     Generate patches relative to directory
39
40 Examples:
41   $CMD -u contrib -b nitin/basic
42   $CMD -u contrib -r distro/master -i nitin/distro -b nitin/distro
43   $CMD -u contrib -r distro/master -i nitin/distro -b nitin/distro -l distro
44   $CMD -u contrib -r master -i misc -b nitin/misc -o pull-misc
45   $CMD -u contrib -p "RFC PATCH" -b nitin/experimental
46   $CMD -u contrib -i misc -b nitin/misc -d ./bitbake
47   $CMD -u contrib -r origin/master -o /tmp/out.v3 -- -v3 --in-reply-to=20170511120134.XX7799@site.com
48EOM
49}
50
51REMOTE="$CPR_CONTRIB_REMOTE"
52# Parse and validate arguments
53while getopts "b:acd:hi:m:o:p:r:s:u:l:" OPT; do
54	case $OPT in
55	b)
56		BRANCH="$OPTARG"
57		;;
58	l)
59		L_BRANCH="$OPTARG"
60		;;
61	c)
62		RFC=1
63		;;
64	d)
65		RELDIR="$OPTARG"
66		;;
67	h)
68		usage
69		exit 0
70		;;
71	i)
72		COMMIT_ID="$OPTARG"
73		;;
74	m)
75		BODY="$OPTARG"
76		if [ ! -e "$BODY" ]; then
77			echo "ERROR: Body file does not exist"
78			exit 1
79		fi
80		;;
81	o)
82		ODIR="$OPTARG"
83		;;
84	p)
85		PREFIX="$OPTARG"
86		;;
87	r)
88		RELATIVE_TO="$OPTARG"
89		;;
90	s)
91		SUBJECT="$OPTARG"
92		;;
93	u)
94		REMOTE="$OPTARG"
95		;;
96	a)
97		CPR_CONTRIB_AUTO_PUSH="1"
98		;;
99	--)
100		shift
101		break
102		;;
103	esac
104done
105
106shift "$((OPTIND - 1))"
107extraopts="$@"
108
109if [ -z "$REMOTE" ]; then
110	echo "ERROR: Missing parameter -u or CPR_CONTRIB_REMOTE in env, no git remote!"
111	usage
112	exit 1
113fi
114
115REMOTE_URL=$(git config remote.$REMOTE.url)
116if [ $? -ne 0 ]; then
117	echo "ERROR: git config failed to find a url for '$REMOTE'"
118	echo
119	echo "To add a remote url for $REMOTE, use:"
120	echo "  git config remote.$REMOTE.url <url>"
121	exit 1
122fi
123
124# Rewrite private URLs to public URLs
125# Determine the repository name for use in the WEB_URL later
126USER_RE="[A-Za-z0-9_.@][A-Za-z0-9_.@-]*\$\?"
127PROTO_RE="[a-z][a-z+]*://"
128GIT_RE="\(^\($PROTO_RE\)\?\)\($USER_RE@\)\?\([^:/]*\)[:/]\(.*\)"
129REMOTE_URL=${REMOTE_URL%.git}
130REMOTE_REPO=$(echo $REMOTE_URL | sed "s#$GIT_RE#\5#")
131REMOTE_URL=$(echo $REMOTE_URL | sed "s#$GIT_RE#https://\4/\5#")
132
133if [ -z "$BRANCH" ]; then
134	BRANCH=$(git branch | grep -e "^\* " | cut -d' ' -f2)
135	echo "NOTE: Assuming remote branch '$BRANCH', use -b to override."
136fi
137
138if [ -z "$L_BRANCH" ]; then
139	L_BRANCH=HEAD
140	echo "NOTE: Assuming local branch HEAD, use -l to override."
141fi
142
143if [ $RFC -eq 1 ]; then
144	PREFIX="RFC $PREFIX"
145fi
146
147
148# Set WEB_URL from known remotes
149WEB_URL=""
150case "$REMOTE_URL" in
151	*git.yoctoproject.org*)
152		WEB_URL="https://git.yoctoproject.org/$REMOTE_REPO/log/?h=$BRANCH"
153		;;
154	*git.openembedded.org*)
155		WEB_URL="https://git.openembedded.org/$REMOTE_REPO/log/?h=$BRANCH"
156		;;
157	*github.com*)
158		WEB_URL="https://github.com/$REMOTE_REPO/tree/$BRANCH"
159		;;
160esac
161
162# Perform a sanity test on the web URL. Issue a warning if it is not
163# accessible, but do not abort as users may want to run offline.
164if [ -n "$WEB_URL" ]; then
165	if [ "$CPR_CONTRIB_AUTO_PUSH" = "1" ]; then
166		echo "Pushing '$BRANCH' on '$REMOTE' as requested..."
167		git push $REMOTE $L_BRANCH:$BRANCH
168		echo ""
169	fi
170	wget --no-check-certificate -q $WEB_URL -O /dev/null
171	if [ $? -ne 0 ]; then
172		echo "WARNING: Branch '$BRANCH' was not found on the contrib git tree."
173		echo "         Please check your remote and branch parameter before sending."
174		echo ""
175	fi
176fi
177
178if [ -e $ODIR ]; then
179	echo "ERROR: output directory $ODIR exists."
180	exit 1
181fi
182mkdir $ODIR
183
184if [ -n "$RELDIR" ]; then
185	ODIR=$(realpath $ODIR)
186	pdir=$(pwd)
187	cd $RELDIR
188	extraopts="$extraopts --relative"
189fi
190
191# Generate the patches and cover letter
192git format-patch $extraopts -M40 --subject-prefix="$PREFIX" -n -o $ODIR --thread=shallow --cover-letter $RELATIVE_TO..$COMMIT_ID > /dev/null
193
194if [ -z "$(ls -A $ODIR 2> /dev/null)" ]; then
195    echo "ERROR: $ODIR is empty, no cover letter and patches was generated!"
196    echo "       This is most likely due to that \$RRELATIVE_TO..\$COMMIT_ID"
197    echo "       ($RELATIVE_TO..$COMMIT_ID) don't contain any differences."
198    rmdir $ODIR
199    exit 1
200fi
201
202[ -n "$RELDIR" ] && cd $pdir
203
204# Customize the cover letter
205CL="$(echo $ODIR/*0000-cover-letter.patch)"
206PM="$ODIR/pull-msg"
207GIT_VERSION=$(`git --version` | tr -d '[:alpha:][:space:].' | sed 's/\(...\).*/\1/')
208NEWER_GIT_VERSION=210
209if [ $GIT_VERSION -lt $NEWER_GIT_VERSION ]; then
210	git request-pull $RELATIVE_TO $REMOTE_URL $COMMIT_ID >> "$PM"
211else
212	git request-pull $RELATIVE_TO $REMOTE_URL $L_BRANCH:$BRANCH >> "$PM"
213fi
214if [ $? -ne 0 ]; then
215	echo "ERROR: git request-pull reported an error"
216	rm -rf $ODIR
217	exit 1
218fi
219
220# The cover letter already has a diffstat, remove it from the pull-msg
221# before inserting it.
222sed -n "0,\#$REMOTE_URL# p" "$PM" | sed -i "/BLURB HERE/ r /dev/stdin" "$CL"
223rm "$PM"
224
225# If this is an RFC, make that clear in the cover letter
226if [ $RFC -eq 1 ]; then
227(cat <<EOM
228Please review the following changes for suitability for inclusion. If you have
229any objections or suggestions for improvement, please respond to the patches. If
230you agree with the changes, please provide your Acked-by.
231
232EOM
233) | sed -i "/BLURB HERE/ r /dev/stdin" "$CL"
234fi
235
236# Insert the WEB_URL if there is one
237if [ -n "$WEB_URL" ]; then
238	echo "  $WEB_URL" | sed -i "\#$REMOTE_URL# r /dev/stdin" "$CL"
239fi
240
241
242# If the user specified a message body, insert it into the cover letter and
243# remove the BLURB token.
244if [ -n "$BODY" ]; then
245	sed -i "/BLURB HERE/ r $BODY" "$CL"
246	sed -i "/BLURB HERE/ d" "$CL"
247fi
248
249# Set subject automatically if there is only one patch
250patch_cnt=`git log --pretty=oneline ${RELATIVE_TO}..${L_BRANCH} | wc -l`
251if [ -z "$SUBJECT" -a $patch_cnt -eq 1 ]; then
252    SUBJECT="`git log --format=%s ${RELATIVE_TO}..${L_BRANCH}`"
253fi
254
255# Replace the SUBJECT token with it.
256if [ -n "$SUBJECT" ]; then
257	sed -i -e "s\`\*\*\* SUBJECT HERE \*\*\*\`$SUBJECT\`" "$CL"
258fi
259
260
261# Generate report for user
262cat <<EOM
263The following patches have been prepared:
264$(for PATCH in $(ls $ODIR/*); do echo "    $PATCH"; done)
265
266Review their content, especially the summary mail:
267    $CL
268
269When you are satisfied, you can send them with:
270    send-pull-request -a -p $ODIR
271EOM
272
273# Check the patches for trailing white space
274egrep -q -e "^\+.*\s+$" $ODIR/*
275if [ $? -ne 1 ]; then
276	echo
277	echo "WARNING: Trailing white space detected at these locations"
278	egrep -nH --color -e "^\+.*\s+$" $ODIR/*
279fi
280