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git/git-format-patch-script
Marco Costalba cc5625a5e2 [PATCH] Fix git-format-patch-script to handle empty messages
In case of a commit with an empty message there is no
mandatory empty line between headers and body

[jc: This makes --mbox output valid even when the commit message does
not have anything but its first line, which the one I wrote botched.
One side-effect is that it adds an extra blank line at the end even if
it has more than one lines, which will be eaten by the receiving end.
As Marco says, this is a stop-gap measure.  This script needs to be
split into two, one that gets the format specifier and a commit ID to
write to its standard output, and another that drives that one reading
from rev-list.  I'll fix things properly when that happens by
rewriting the former part in Perl or something more reasonable than
the current shell, sed and grep mishmash.]

Signed-off-by: Marco Costalba <mcostalba@yahoo.it>
Signed-off-by: Junio C Hamano <junkio@cox.net>
2005-08-19 11:32:54 -07:00

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#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano
#
. git-sh-setup-script || die "Not a git archive."
usage () {
echo >&2 "usage: $0"' [-n] [-o dir] [--keep-subject] [--mbox] [--check] [--signoff] [-<diff options>...] upstream [ our-head ]
Prepare each commit with its patch since our-head forked from upstream,
one file per patch, for e-mail submission. Each output file is
numbered sequentially from 1, and uses the first line of the commit
message (massaged for pathname safety) as the filename.
When -o is specified, output files are created in that directory; otherwise in
the current working directory.
When -n is specified, instead of "[PATCH] Subject", the first line is formatted
as "[PATCH N/M] Subject", unless you have only one patch.
When --mbox is specified, the output is formatted to resemble
UNIX mailbox format, and can be concatenated together for processing
with applymbox.
'
exit 1
}
diff_opts=
IFS='
'
LF='
'
outdir=./
while case "$#" in 0) break;; esac
do
case "$1" in
-a|--a|--au|--aut|--auth|--autho|--author)
author=t ;;
-c|--c|--ch|--che|--chec|--check)
check=t ;;
-d|--d|--da|--dat|--date)
date=t ;;
-m|--m|--mb|--mbo|--mbox)
date=t author=t mbox=t ;;
-k|--k|--ke|--kee|--keep|--keep-|--keep-s|--keep-su|--keep-sub|\
--keep-subj|--keep-subje|--keep-subjec|--keep-subject)
keep_subject=t ;;
-n|--n|--nu|--num|--numb|--numbe|--number|--numbere|--numbered)
numbered=t ;;
-s|--s|--si|--sig|--sign|--signo|--signof|--signoff)
signoff=t ;;
-o=*|--o=*|--ou=*|--out=*|--outp=*|--outpu=*|--output=*|--output-=*|\
--output-d=*|--output-di=*|--output-dir=*|--output-dire=*|\
--output-direc=*|--output-direct=*|--output-directo=*|\
--output-director=*|--output-directory=*)
outdir=`expr "$1" : '-[^=]*=\(.*\)'` ;;
-o|--o|--ou|--out|--outp|--outpu|--output|--output-|--output-d|\
--output-di|--output-dir|--output-dire|--output-direc|--output-direct|\
--output-directo|--output-director|--output-directory)
case "$#" in 1) usage ;; esac; shift
outdir="$1" ;;
-*) diff_opts="$diff_opts$LF$1" ;;
*) break ;;
esac
shift
done
case "$keep_subject$numbered" in
tt)
die '--keep-subject and --numbered are incompatible.' ;;
esac
revpair=
case "$#" in
2)
revpair="$1..$2" ;;
1)
case "$1" in
*..*)
revpair="$1";;
*)
revpair="$1..HEAD";;
esac ;;
*)
usage ;;
esac
me=`git-var GIT_AUTHOR_IDENT | sed -e 's/>.*/>/'`
case "$outdir" in
*/) ;;
*) outdir="$outdir/" ;;
esac
test -d "$outdir" || mkdir -p "$outdir" || exit
tmp=.tmp-series$$
trap 'rm -f $tmp-*' 0 1 2 3 15
series=$tmp-series
commsg=$tmp-commsg
filelist=$tmp-files
titleScript='
/./d
/^$/n
s/^\[PATCH[^]]*\] *//
s/[^-a-z.A-Z_0-9]/-/g
s/\.\.\.*/\./g
s/\.*$//
s/--*/-/g
s/^-//
s/-$//
s/$/./
p
q
'
whosepatchScript='
/^author /{
s/author \(.*>\) \(.*\)$/au='\''\1'\'' ad='\''\2'\''/p
q
}'
_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
stripCommitHead='/^'"$_x40"' (from '"$_x40"')$/d'
git-rev-list --no-merges --merge-order \
$(git-rev-parse --revs-only "$revpair") >$series
total=`wc -l <$series | tr -dc "[0-9]"`
i=$total
while read commit
do
git-cat-file commit "$commit" | git-stripspace >$commsg
title=`sed -ne "$titleScript" <$commsg`
case "$numbered" in
'') num= ;;
*)
case $total in
1) num= ;;
*) num=' '`printf "%d/%d" $i $total` ;;
esac
esac
file=`printf '%04d-%stxt' $i "$title"`
i=`expr "$i" - 1`
echo "* $file"
{
mailScript='
/./d
/^$/n'
case "$keep_subject" in
t) ;;
*)
mailScript="$mailScript"'
s|^\[PATCH[^]]*\] *||
s|^|[PATCH'"$num"'] |'
;;
esac
mailScript="$mailScript"'
s|^|Subject: |'
case "$mbox" in
t)
echo 'From nobody Mon Sep 17 00:00:00 2001' ;# UNIX "From" line
;;
esac
eval "$(sed -ne "$whosepatchScript" $commsg)"
test "$author,$au" = ",$me" || {
mailScript="$mailScript"'
a\
From: '"$au"
}
test "$date,$au" = ",$me" || {
mailScript="$mailScript"'
a\
Date: '"$ad"
}
mailScript="$mailScript"'
: body
p
n
b body'
sed -ne "$mailScript" <$commsg
test "$signoff" = "t" && {
offsigner=`git-var GIT_COMMITTER_IDENT | sed -e 's/>.*/>/'`
line="Signed-off-by: $offsigner"
grep -q "^$line\$" $commsg || {
echo
echo "$line"
echo
}
}
echo
echo '---'
echo
git-diff-tree -p $diff_opts "$commit" | git-apply --stat --summary
echo
git-diff-tree -p $diff_opts "$commit" | sed -e "$stripCommitHead"
case "$mbox" in
t)
echo
;;
esac
} >"$outdir$file"
case "$check" in
t)
# This is slightly modified from Andrew Morton's Perfect Patch.
# Lines you introduce should not have trailing whitespace.
# Also check for an indentation that has SP before a TAB.
grep -n '^+\([ ]* .*\|.*[ ]\)$' "$outdir$file"
: do not exit with non-zero because we saw no problem in the last one.
esac
done <$series