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executable file 590 lines (537 sloc) 13.869 kB
#!/bin/sh
#
# Copyright (c) 2005, 2006 Junio C Hamano
SUBDIRECTORY_OK=Yes
OPTIONS_KEEPDASHDASH=
OPTIONS_SPEC="\
git am [options] [<mbox>|<Maildir>...]
git am [options] (--resolved | --skip | --abort)
--
i,interactive run interactively
b,binary* (historical option -- no-op)
3,3way allow fall back on 3way merging if needed
s,signoff add a Signed-off-by line to the commit message
u,utf8 recode into utf8 (default)
k,keep pass -k flag to git-mailinfo
whitespace= pass it through git-apply
directory= pass it through git-apply
C= pass it through git-apply
p= pass it through git-apply
reject pass it through git-apply
resolvemsg= override error message when patch failure occurs
r,resolved to be used after a patch failure
skip skip the current patch
abort restore the original branch and abort the patching operation.
committer-date-is-author-date lie about committer date
ignore-date use current timestamp for author date
rebasing* (internal use for git-rebase)"
. git-sh-setup
prefix=$(git rev-parse --show-prefix)
set_reflog_action am
require_work_tree
cd_to_toplevel
git var GIT_COMMITTER_IDENT >/dev/null ||
die "You need to set your committer info first"
if git rev-parse --verify -q HEAD >/dev/null
then
HAS_HEAD=yes
else
HAS_HEAD=
fi
sq () {
for sqarg
do
printf "%s" "$sqarg" |
sed -e 's/'\''/'\''\\'\'''\''/g' -e 's/.*/ '\''&'\''/'
done
}
stop_here () {
echo "$1" >"$dotest/next"
exit 1
}
stop_here_user_resolve () {
if [ -n "$resolvemsg" ]; then
printf '%s\n' "$resolvemsg"
stop_here $1
fi
cmdline="git am"
if test '' != "$interactive"
then
cmdline="$cmdline -i"
fi
if test '' != "$threeway"
then
cmdline="$cmdline -3"
fi
echo "When you have resolved this problem run \"$cmdline --resolved\"."
echo "If you would prefer to skip this patch, instead run \"$cmdline --skip\"."
echo "To restore the original branch and stop patching run \"$cmdline --abort\"."
stop_here $1
}
go_next () {
rm -f "$dotest/$msgnum" "$dotest/msg" "$dotest/msg-clean" \
"$dotest/patch" "$dotest/info"
echo "$next" >"$dotest/next"
this=$next
}
cannot_fallback () {
echo "$1"
echo "Cannot fall back to three-way merge."
exit 1
}
fall_back_3way () {
O_OBJECT=`cd "$GIT_OBJECT_DIRECTORY" && pwd`
rm -fr "$dotest"/patch-merge-*
mkdir "$dotest/patch-merge-tmp-dir"
# First see if the patch records the index info that we can use.
git apply --build-fake-ancestor "$dotest/patch-merge-tmp-index" \
"$dotest/patch" &&
GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
git write-tree >"$dotest/patch-merge-base+" ||
cannot_fallback "Repository lacks necessary blobs to fall back on 3-way merge."
echo Using index info to reconstruct a base tree...
if GIT_INDEX_FILE="$dotest/patch-merge-tmp-index" \
git apply --cached <"$dotest/patch"
then
mv "$dotest/patch-merge-base+" "$dotest/patch-merge-base"
mv "$dotest/patch-merge-tmp-index" "$dotest/patch-merge-index"
else
cannot_fallback "Did you hand edit your patch?
It does not apply to blobs recorded in its index."
fi
test -f "$dotest/patch-merge-index" &&
his_tree=$(GIT_INDEX_FILE="$dotest/patch-merge-index" git write-tree) &&
orig_tree=$(cat "$dotest/patch-merge-base") &&
rm -fr "$dotest"/patch-merge-* || exit 1
echo Falling back to patching base and 3-way merge...
# This is not so wrong. Depending on which base we picked,
# orig_tree may be wildly different from ours, but his_tree
# has the same set of wildly different changes in parts the
# patch did not touch, so recursive ends up canceling them,
# saying that we reverted all those changes.
eval GITHEAD_$his_tree='"$FIRSTLINE"'
export GITHEAD_$his_tree
git-merge-recursive $orig_tree -- HEAD $his_tree || {
git rerere
echo Failed to merge in the changes.
exit 1
}
unset GITHEAD_$his_tree
}
prec=4
dotest="$GIT_DIR/rebase-apply"
sign= utf8=t keep= skip= interactive= resolved= rebasing= abort=
resolvemsg= resume=
git_apply_opt=
committer_date_is_author_date=
ignore_date=
while test $# != 0
do
case "$1" in
-i|--interactive)
interactive=t ;;
-b|--binary)
: ;;
-3|--3way)
threeway=t ;;
-s|--signoff)
sign=t ;;
-u|--utf8)
utf8=t ;; # this is now default
--no-utf8)
utf8= ;;
-k|--keep)
keep=t ;;
-r|--resolved)
resolved=t ;;
--skip)
skip=t ;;
--abort)
abort=t ;;
--rebasing)
rebasing=t threeway=t keep=t ;;
-d|--dotest)
die "-d option is no longer supported. Do not use."
;;
--resolvemsg)
shift; resolvemsg=$1 ;;
--whitespace|--directory)
git_apply_opt="$git_apply_opt $(sq "$1=$2")"; shift ;;
-C|-p)
git_apply_opt="$git_apply_opt $(sq "$1$2")"; shift ;;
--reject)
git_apply_opt="$git_apply_opt $1" ;;
--committer-date-is-author-date)
committer_date_is_author_date=t ;;
--ignore-date)
ignore_date=t ;;
--)
shift; break ;;
*)
usage ;;
esac
shift
done
# If the dotest directory exists, but we have finished applying all the
# patches in them, clear it out.
if test -d "$dotest" &&
last=$(cat "$dotest/last") &&
next=$(cat "$dotest/next") &&
test $# != 0 &&
test "$next" -gt "$last"
then
rm -fr "$dotest"
fi
if test -d "$dotest"
then
case "$#,$skip$resolved$abort" in
0,*t*)
# Explicit resume command and we do not have file, so
# we are happy.
: ;;
0,)
# No file input but without resume parameters; catch
# user error to feed us a patch from standard input
# when there is already $dotest. This is somewhat
# unreliable -- stdin could be /dev/null for example
# and the caller did not intend to feed us a patch but
# wanted to continue unattended.
test -t 0
;;
*)
false
;;
esac ||
die "previous rebase directory $dotest still exists but mbox given."
resume=yes
case "$skip,$abort" in
t,t)
die "Please make up your mind. --skip or --abort?"
;;
t,)
git rerere clear
git read-tree --reset -u HEAD HEAD
orig_head=$(cat "$GIT_DIR/ORIG_HEAD")
git reset HEAD
git update-ref ORIG_HEAD $orig_head
;;
,t)
if test -f "$dotest/rebasing"
then
exec git rebase --abort
fi
git rerere clear
test -f "$dotest/dirtyindex" || {
git read-tree --reset -u HEAD ORIG_HEAD
git reset ORIG_HEAD
}
rm -fr "$dotest"
exit ;;
esac
rm -f "$dotest/dirtyindex"
else
# Make sure we are not given --skip, --resolved, nor --abort
test "$skip$resolved$abort" = "" ||
die "Resolve operation not in progress, we are not resuming."
# Start afresh.
mkdir -p "$dotest" || exit
if test -n "$prefix" && test $# != 0
then
first=t
for arg
do
test -n "$first" && {
set x
first=
}
case "$arg" in
/*)
set "$@" "$arg" ;;
*)
set "$@" "$prefix$arg" ;;
esac
done
shift
fi
git mailsplit -d"$prec" -o"$dotest" -b -- "$@" > "$dotest/last" || {
rm -fr "$dotest"
exit 1
}
# -s, -u, -k, --whitespace, -3, -C and -p flags are kept
# for the resuming session after a patch failure.
# -i can and must be given when resuming.
echo " $git_apply_opt" >"$dotest/apply-opt"
echo "$threeway" >"$dotest/threeway"
echo "$sign" >"$dotest/sign"
echo "$utf8" >"$dotest/utf8"
echo "$keep" >"$dotest/keep"
echo 1 >"$dotest/next"
if test -n "$rebasing"
then
: >"$dotest/rebasing"
else
: >"$dotest/applying"
if test -n "$HAS_HEAD"
then
git update-ref ORIG_HEAD HEAD
else
git update-ref -d ORIG_HEAD >/dev/null 2>&1
fi
fi
fi
case "$resolved" in
'')
case "$HAS_HEAD" in
'')
files=$(git ls-files) ;;
?*)
files=$(git diff-index --cached --name-only HEAD --) ;;
esac || exit
if test "$files"
then
test -n "$HAS_HEAD" && : >"$dotest/dirtyindex"
die "Dirty index: cannot apply patches (dirty: $files)"
fi
esac
if test "$(cat "$dotest/utf8")" = t
then
utf8=-u
else
utf8=-n
fi
if test "$(cat "$dotest/keep")" = t
then
keep=-k
fi
if test "$(cat "$dotest/threeway")" = t
then
threeway=t
fi
git_apply_opt=$(cat "$dotest/apply-opt")
if test "$(cat "$dotest/sign")" = t
then
SIGNOFF=`git var GIT_COMMITTER_IDENT | sed -e '
s/>.*/>/
s/^/Signed-off-by: /'
`
else
SIGNOFF=
fi
last=`cat "$dotest/last"`
this=`cat "$dotest/next"`
if test "$skip" = t
then
this=`expr "$this" + 1`
resume=
fi
if test "$this" -gt "$last"
then
echo Nothing to do.
rm -fr "$dotest"
exit
fi
while test "$this" -le "$last"
do
msgnum=`printf "%0${prec}d" $this`
next=`expr "$this" + 1`
test -f "$dotest/$msgnum" || {
resume=
go_next
continue
}
# If we are not resuming, parse and extract the patch information
# into separate files:
# - info records the authorship and title
# - msg is the rest of commit log message
# - patch is the patch body.
#
# When we are resuming, these files are either already prepared
# by the user, or the user can tell us to do so by --resolved flag.
case "$resume" in
'')
git mailinfo $keep $utf8 "$dotest/msg" "$dotest/patch" \
<"$dotest/$msgnum" >"$dotest/info" ||
stop_here $this
# skip pine's internal folder data
grep '^Author: Mail System Internal Data$' \
<"$dotest"/info >/dev/null &&
go_next && continue
test -s "$dotest/patch" || {
echo "Patch is empty. Was it split wrong?"
stop_here $this
}
if test -f "$dotest/rebasing" &&
commit=$(sed -e 's/^From \([0-9a-f]*\) .*/\1/' \
-e q "$dotest/$msgnum") &&
test "$(git cat-file -t "$commit")" = commit
then
git cat-file commit "$commit" |
sed -e '1,/^$/d' >"$dotest/msg-clean"
else
SUBJECT="$(sed -n '/^Subject/ s/Subject: //p' "$dotest/info")"
case "$keep_subject" in -k) SUBJECT="[PATCH] $SUBJECT" ;; esac
(printf '%s\n\n' "$SUBJECT"; cat "$dotest/msg") |
git stripspace > "$dotest/msg-clean"
fi
;;
esac
GIT_AUTHOR_NAME="$(sed -n '/^Author/ s/Author: //p' "$dotest/info")"
GIT_AUTHOR_EMAIL="$(sed -n '/^Email/ s/Email: //p' "$dotest/info")"
GIT_AUTHOR_DATE="$(sed -n '/^Date/ s/Date: //p' "$dotest/info")"
if test -z "$GIT_AUTHOR_EMAIL"
then
echo "Patch does not have a valid e-mail address."
stop_here $this
fi
export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
case "$resume" in
'')
if test '' != "$SIGNOFF"
then
LAST_SIGNED_OFF_BY=`
sed -ne '/^Signed-off-by: /p' \
"$dotest/msg-clean" |
sed -ne '$p'
`
ADD_SIGNOFF=`
test "$LAST_SIGNED_OFF_BY" = "$SIGNOFF" || {
test '' = "$LAST_SIGNED_OFF_BY" && echo
echo "$SIGNOFF"
}`
else
ADD_SIGNOFF=
fi
{
if test -s "$dotest/msg-clean"
then
cat "$dotest/msg-clean"
fi
if test '' != "$ADD_SIGNOFF"
then
echo "$ADD_SIGNOFF"
fi
} >"$dotest/final-commit"
;;
*)
case "$resolved$interactive" in
tt)
# This is used only for interactive view option.
git diff-index -p --cached HEAD -- >"$dotest/patch"
;;
esac
esac
resume=
if test "$interactive" = t
then
test -t 0 ||
die "cannot be interactive without stdin connected to a terminal."
action=again
while test "$action" = again
do
echo "Commit Body is:"
echo "--------------------------"
cat "$dotest/final-commit"
echo "--------------------------"
printf "Apply? [y]es/[n]o/[e]dit/[v]iew patch/[a]ccept all "
read reply
case "$reply" in
[yY]*) action=yes ;;
[aA]*) action=yes interactive= ;;
[nN]*) action=skip ;;
[eE]*) git_editor "$dotest/final-commit"
action=again ;;
[vV]*) action=again
LESS=-S ${PAGER:-less} "$dotest/patch" ;;
*) action=again ;;
esac
done
else
action=yes
fi
FIRSTLINE=$(sed 1q "$dotest/final-commit")
if test $action = skip
then
go_next
continue
fi
if test -x "$GIT_DIR"/hooks/applypatch-msg
then
"$GIT_DIR"/hooks/applypatch-msg "$dotest/final-commit" ||
stop_here $this
fi
printf 'Applying: %s\n' "$FIRSTLINE"
case "$resolved" in
'')
eval 'git apply '"$git_apply_opt"' --index "$dotest/patch"'
apply_status=$?
;;
t)
# Resolved means the user did all the hard work, and
# we do not have to do any patch application. Just
# trust what the user has in the index file and the
# working tree.
resolved=
git diff-index --quiet --cached HEAD -- && {
echo "No changes - did you forget to use 'git add'?"
stop_here_user_resolve $this
}
unmerged=$(git ls-files -u)
if test -n "$unmerged"
then
echo "You still have unmerged paths in your index"
echo "did you forget to use 'git add'?"
stop_here_user_resolve $this
fi
apply_status=0
git rerere
;;
esac
if test $apply_status = 1 && test "$threeway" = t
then
if (fall_back_3way)
then
# Applying the patch to an earlier tree and merging the
# result may have produced the same tree as ours.
git diff-index --quiet --cached HEAD -- && {
echo No changes -- Patch already applied.
go_next
continue
}
# clear apply_status -- we have successfully merged.
apply_status=0
fi
fi
if test $apply_status != 0
then
printf 'Patch failed at %s %s\n' "$msgnum" "$FIRSTLINE"
stop_here_user_resolve $this
fi
if test -x "$GIT_DIR"/hooks/pre-applypatch
then
"$GIT_DIR"/hooks/pre-applypatch || stop_here $this
fi
tree=$(git write-tree) &&
commit=$(
if test -n "$ignore_date"
then
GIT_AUTHOR_DATE=
fi
parent=$(git rev-parse --verify -q HEAD) ||
echo >&2 "applying to an empty history"
if test -n "$committer_date_is_author_date"
then
GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"
export GIT_COMMITTER_DATE
fi &&
git commit-tree $tree ${parent:+-p $parent} <"$dotest/final-commit"
) &&
git update-ref -m "$GIT_REFLOG_ACTION: $FIRSTLINE" HEAD $commit $parent ||
stop_here $this
if test -x "$GIT_DIR"/hooks/post-applypatch
then
"$GIT_DIR"/hooks/post-applypatch
fi
go_next
done
git gc --auto
rm -fr "$dotest"
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