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#!/bin/sh
# Copyright (c) 2007, Nanako Shiraishi
dashless=$(basename "$0" | sed -e 's/-/ /')
USAGE="list [<options>]
or: $dashless show [<stash>]
or: $dashless drop [-q|--quiet] [<stash>]
or: $dashless ( pop | apply ) [--index] [-q|--quiet] [<stash>]
or: $dashless branch <branchname> [<stash>]
or: $dashless [save [--patch] [-k|--[no-]keep-index] [-q|--quiet]
[-u|--include-untracked] [-a|--all] [<message>]]
or: $dashless clear"
SUBDIRECTORY_OK=Yes
OPTIONS_SPEC=
START_DIR=`pwd`
. git-sh-setup
. git-sh-i18n
require_work_tree
cd_to_toplevel
TMP="$GIT_DIR/.git-stash.$$"
TMPindex=${GIT_INDEX_FILE-"$GIT_DIR/index"}.stash.$$
trap 'rm -f "$TMP-"* "$TMPindex"' 0
ref_stash=refs/stash
if git config --get-colorbool color.interactive; then
help_color="$(git config --get-color color.interactive.help 'red bold')"
reset_color="$(git config --get-color '' reset)"
else
help_color=
reset_color=
fi
no_changes () {
git diff-index --quiet --cached HEAD --ignore-submodules -- &&
git diff-files --quiet --ignore-submodules &&
(test -z "$untracked" || test -z "$(untracked_files)")
}
untracked_files () {
excl_opt=--exclude-standard
test "$untracked" = "all" && excl_opt=
git ls-files -o -z $excl_opt
}
clear_stash () {
if test $# != 0
then
die "$(gettext "git stash clear with parameters is unimplemented")"
fi
if current=$(git rev-parse --verify $ref_stash 2>/dev/null)
then
git update-ref -d $ref_stash $current
fi
}
create_stash () {
stash_msg="$1"
untracked="$2"
git update-index -q --refresh
if no_changes
then
exit 0
fi
# state of the base commit
if b_commit=$(git rev-parse --verify HEAD)
then
head=$(git rev-list --oneline -n 1 HEAD --)
else
die "$(gettext "You do not have the initial commit yet")"
fi
if branch=$(git symbolic-ref -q HEAD)
then
branch=${branch#refs/heads/}
else
branch='(no branch)'
fi
msg=$(printf '%s: %s' "$branch" "$head")
# state of the index
i_tree=$(git write-tree) &&
i_commit=$(printf 'index on %s\n' "$msg" |
git commit-tree $i_tree -p $b_commit) ||
die "$(gettext "Cannot save the current index state")"
if test -n "$untracked"
then
# Untracked files are stored by themselves in a parentless commit, for
# ease of unpacking later.
u_commit=$(
untracked_files | (
export GIT_INDEX_FILE="$TMPindex"
rm -f "$TMPindex" &&
git update-index -z --add --remove --stdin &&
u_tree=$(git write-tree) &&
printf 'untracked files on %s\n' "$msg" | git commit-tree $u_tree &&
rm -f "$TMPindex"
) ) || die "Cannot save the untracked files"
untracked_commit_option="-p $u_commit";
else
untracked_commit_option=
fi
if test -z "$patch_mode"
then
# state of the working tree
w_tree=$( (
git read-tree --index-output="$TMPindex" -m $i_tree &&
GIT_INDEX_FILE="$TMPindex" &&
export GIT_INDEX_FILE &&
git diff --name-only -z HEAD -- >"$TMP-stagenames" &&
git update-index -z --add --remove --stdin <"$TMP-stagenames" &&
git write-tree &&
rm -f "$TMPindex"
) ) ||
die "$(gettext "Cannot save the current worktree state")"
else
rm -f "$TMP-index" &&
GIT_INDEX_FILE="$TMP-index" git read-tree HEAD &&
# find out what the user wants
GIT_INDEX_FILE="$TMP-index" \
git add--interactive --patch=stash -- &&
# state of the working tree
w_tree=$(GIT_INDEX_FILE="$TMP-index" git write-tree) ||
die "$(gettext "Cannot save the current worktree state")"
git diff-tree -p HEAD $w_tree -- >"$TMP-patch" &&
test -s "$TMP-patch" ||
die "$(gettext "No changes selected")"
rm -f "$TMP-index" ||
die "$(gettext "Cannot remove temporary index (can't happen)")"
fi
# create the stash
if test -z "$stash_msg"
then
stash_msg=$(printf 'WIP on %s' "$msg")
else
stash_msg=$(printf 'On %s: %s' "$branch" "$stash_msg")
fi
w_commit=$(printf '%s\n' "$stash_msg" |
git commit-tree $w_tree -p $b_commit -p $i_commit $untracked_commit_option) ||
die "$(gettext "Cannot record working tree state")"
}
save_stash () {
keep_index=
patch_mode=
untracked=
while test $# != 0
do
case "$1" in
-k|--keep-index)
keep_index=t
;;
--no-keep-index)
keep_index=n
;;
-p|--patch)
patch_mode=t
# only default to keep if we don't already have an override
test -z "$keep_index" && keep_index=t
;;
-q|--quiet)
GIT_QUIET=t
;;
-u|--include-untracked)
untracked=untracked
;;
-a|--all)
untracked=all
;;
--)
shift
break
;;
-*)
option="$1"
# TRANSLATORS: $option is an invalid option, like
# `--blah-blah'. The 7 spaces at the beginning of the
# second line correspond to "error: ". So you should line
# up the second line with however many characters the
# translation of "error: " takes in your language. E.g. in
# English this is:
#
# $ git stash save --blah-blah 2>&1 | head -n 2
# error: unknown option for 'stash save': --blah-blah
# To provide a message, use git stash save -- '--blah-blah'
eval_gettextln "error: unknown option for 'stash save': \$option
To provide a message, use git stash save -- '\$option'"
usage
;;
*)
break
;;
esac
shift
done
if test -n "$patch_mode" && test -n "$untracked"
then
die "Can't use --patch and --include-untracked or --all at the same time"
fi
stash_msg="$*"
git update-index -q --refresh
if no_changes
then
say "$(gettext "No local changes to save")"
exit 0
fi
test -f "$GIT_DIR/logs/$ref_stash" ||
clear_stash || die "$(gettext "Cannot initialize stash")"
create_stash "$stash_msg" $untracked
# Make sure the reflog for stash is kept.
: >>"$GIT_DIR/logs/$ref_stash"
git update-ref -m "$stash_msg" $ref_stash $w_commit ||
die "$(gettext "Cannot save the current status")"
say Saved working directory and index state "$stash_msg"
if test -z "$patch_mode"
then
git reset --hard ${GIT_QUIET:+-q}
test "$untracked" = "all" && CLEAN_X_OPTION=-x || CLEAN_X_OPTION=
if test -n "$untracked"
then
git clean --force --quiet -d $CLEAN_X_OPTION
fi
if test "$keep_index" = "t" && test -n $i_tree
then
git read-tree --reset -u $i_tree
fi
else
git apply -R < "$TMP-patch" ||
die "$(gettext "Cannot remove worktree changes")"
if test "$keep_index" != "t"
then
git reset
fi
fi
}
have_stash () {
git rev-parse --verify $ref_stash >/dev/null 2>&1
}
list_stash () {
have_stash || return 0
git log --format="%gd: %gs" -g "$@" $ref_stash --
}
show_stash () {
assert_stash_like "$@"
git diff ${FLAGS:---stat} $b_commit $w_commit
}
#
# Parses the remaining options looking for flags and
# at most one revision defaulting to ${ref_stash}@{0}
# if none found.
#
# Derives related tree and commit objects from the
# revision, if one is found.
#
# stash records the work tree, and is a merge between the
# base commit (first parent) and the index tree (second parent).
#
# REV is set to the symbolic version of the specified stash-like commit
# IS_STASH_LIKE is non-blank if ${REV} looks like a stash
# IS_STASH_REF is non-blank if the ${REV} looks like a stash ref
# s is set to the SHA1 of the stash commit
# w_commit is set to the commit containing the working tree
# b_commit is set to the base commit
# i_commit is set to the commit containing the index tree
# u_commit is set to the commit containing the untracked files tree
# w_tree is set to the working tree
# b_tree is set to the base tree
# i_tree is set to the index tree
# u_tree is set to the untracked files tree
#
# GIT_QUIET is set to t if -q is specified
# INDEX_OPTION is set to --index if --index is specified.
# FLAGS is set to the remaining flags
#
# dies if:
# * too many revisions specified
# * no revision is specified and there is no stash stack
# * a revision is specified which cannot be resolve to a SHA1
# * a non-existent stash reference is specified
#
parse_flags_and_rev()
{
test "$PARSE_CACHE" = "$*" && return 0 # optimisation
PARSE_CACHE="$*"
IS_STASH_LIKE=
IS_STASH_REF=
INDEX_OPTION=
s=
w_commit=
b_commit=
i_commit=
u_commit=
w_tree=
b_tree=
i_tree=
u_tree=
REV=$(git rev-parse --no-flags --symbolic "$@") || exit 1
FLAGS=
for opt
do
case "$opt" in
-q|--quiet)
GIT_QUIET=-t
;;
--index)
INDEX_OPTION=--index
;;
-*)
FLAGS="${FLAGS}${FLAGS:+ }$opt"
;;
esac
done
set -- $REV
case $# in
0)
have_stash || die "$(gettext "No stash found.")"
set -- ${ref_stash}@{0}
;;
1)
:
;;
*)
die "$(eval_gettext "Too many revisions specified: \$REV")"
;;
esac
REV=$(git rev-parse --quiet --symbolic --verify $1 2>/dev/null) || {
reference="$1"
die "$(eval_gettext "\$reference is not valid reference")"
}
i_commit=$(git rev-parse --quiet --verify $REV^2 2>/dev/null) &&
set -- $(git rev-parse $REV $REV^1 $REV: $REV^1: $REV^2: 2>/dev/null) &&
s=$1 &&
w_commit=$1 &&
b_commit=$2 &&
w_tree=$3 &&
b_tree=$4 &&
i_tree=$5 &&
IS_STASH_LIKE=t &&
test "$ref_stash" = "$(git rev-parse --symbolic-full-name "${REV%@*}")" &&
IS_STASH_REF=t
u_commit=$(git rev-parse --quiet --verify $REV^3 2>/dev/null) &&
u_tree=$(git rev-parse $REV^3: 2>/dev/null)
}
is_stash_like()
{
parse_flags_and_rev "$@"
test -n "$IS_STASH_LIKE"
}
assert_stash_like() {
is_stash_like "$@" || {
args="$*"
die "$(eval_gettext "'\$args' is not a stash-like commit")"
}
}
is_stash_ref() {
is_stash_like "$@" && test -n "$IS_STASH_REF"
}
assert_stash_ref() {
is_stash_ref "$@" || {
args="$*"
die "$(eval_gettext "'\$args' is not a stash reference")"
}
}
apply_stash () {
assert_stash_like "$@"
git update-index -q --refresh || die "$(gettext "unable to refresh index")"
# current index state
c_tree=$(git write-tree) ||
die "$(gettext "Cannot apply a stash in the middle of a merge")"
unstashed_index_tree=
if test -n "$INDEX_OPTION" && test "$b_tree" != "$i_tree" &&
test "$c_tree" != "$i_tree"
then
git diff-tree --binary $s^2^..$s^2 | git apply --cached
test $? -ne 0 &&
die "$(gettext "Conflicts in index. Try without --index.")"
unstashed_index_tree=$(git write-tree) ||
die "$(gettext "Could not save index tree")"
git reset
fi
if test -n "$u_tree"
then
GIT_INDEX_FILE="$TMPindex" git-read-tree "$u_tree" &&
GIT_INDEX_FILE="$TMPindex" git checkout-index --all &&
rm -f "$TMPindex" ||
die 'Could not restore untracked files from stash'
fi
eval "
GITHEAD_$w_tree='Stashed changes' &&
GITHEAD_$c_tree='Updated upstream' &&
GITHEAD_$b_tree='Version stash was based on' &&
export GITHEAD_$w_tree GITHEAD_$c_tree GITHEAD_$b_tree
"
if test -n "$GIT_QUIET"
then
GIT_MERGE_VERBOSITY=0 && export GIT_MERGE_VERBOSITY
fi
if git merge-recursive $b_tree -- $c_tree $w_tree
then
# No conflict
if test -n "$unstashed_index_tree"
then
git read-tree "$unstashed_index_tree"
else
a="$TMP-added" &&
git diff-index --cached --name-only --diff-filter=A $c_tree >"$a" &&
git read-tree --reset $c_tree &&
git update-index --add --stdin <"$a" ||
die "$(gettext "Cannot unstage modified files")"
rm -f "$a"
fi
squelch=
if test -n "$GIT_QUIET"
then
squelch='>/dev/null 2>&1'
fi
(cd "$START_DIR" && eval "git status $squelch") || :
else
# Merge conflict; keep the exit status from merge-recursive
status=$?
git rerere
if test -n "$INDEX_OPTION"
then
gettextln "Index was not unstashed." >&2
fi
exit $status
fi
}
pop_stash() {
assert_stash_ref "$@"
apply_stash "$@" &&
drop_stash "$@"
}
drop_stash () {
assert_stash_ref "$@"
git reflog delete --updateref --rewrite "${REV}" &&
say "$(eval_gettext "Dropped \${REV} (\$s)")" ||
die "$(eval_gettext "\${REV}: Could not drop stash entry")"
# clear_stash if we just dropped the last stash entry
git rev-parse --verify "$ref_stash@{0}" >/dev/null 2>&1 || clear_stash
}
apply_to_branch () {
test -n "$1" || die "$(gettext "No branch name specified")"
branch=$1
shift 1
set -- --index "$@"
assert_stash_like "$@"
git checkout -b $branch $REV^ &&
apply_stash "$@" && {
test -z "$IS_STASH_REF" || drop_stash "$@"
}
}
PARSE_CACHE='--not-parsed'
# The default command is "save" if nothing but options are given
seen_non_option=
for opt
do
case "$opt" in
-*) ;;
*) seen_non_option=t; break ;;
esac
done
test -n "$seen_non_option" || set "save" "$@"
# Main command set
case "$1" in
list)
shift
list_stash "$@"
;;
show)
shift
show_stash "$@"
;;
save)
shift
save_stash "$@"
;;
apply)
shift
apply_stash "$@"
;;
clear)
shift
clear_stash "$@"
;;
create)
if test $# -gt 0 && test "$1" = create
then
shift
fi
create_stash "$*" && echo "$w_commit"
;;
drop)
shift
drop_stash "$@"
;;
pop)
shift
pop_stash "$@"
;;
branch)
shift
apply_to_branch "$@"
;;
*)
case $# in
0)
save_stash &&
say "$(gettext "(To restore them type \"git stash apply\")")"
;;
*)
usage
esac
;;
esac