#!/bin/sh
# Copyright (c) 2007, Nanako Shiraishi
-USAGE='[ | list | show | apply | clear]'
+USAGE='[ | save | list | show | apply | clear | drop | pop | create ]'
SUBDIRECTORY_OK=Yes
+OPTIONS_SPEC=
. git-sh-setup
require_work_tree
cd_to_toplevel
ref_stash=refs/stash
no_changes () {
- git diff-index --quiet --cached HEAD &&
+ git diff-index --quiet --cached HEAD -- &&
git diff-files --quiet
}
clear_stash () {
- logfile="$GIT_DIR/logs/$ref_stash" &&
- mkdir -p "$(dirname "$logfile")" &&
- : >"$logfile"
+ if test $# != 0
+ then
+ die "git stash clear with parameters is unimplemented"
+ fi
+ if current=$(git rev-parse --verify $ref_stash 2>/dev/null)
+ then
+ git update-ref -d $ref_stash $current
+ fi
}
-save_stash () {
+create_stash () {
stash_msg="$1"
if no_changes
then
- echo >&2 'No local changes to save'
exit 0
fi
- test -f "$GIT_DIR/logs/$ref_stash" ||
- clear_stash || die "Cannot initialize stash"
# state of the base commit
if b_commit=$(git rev-parse --verify HEAD)
then
- head=$(git log --abbrev-commit --pretty=oneline -n 1 HEAD)
+ head=$(git log --no-color --abbrev-commit --pretty=oneline -n 1 HEAD --)
else
die "You do not have the initial commit yet"
fi
# state of the index
i_tree=$(git write-tree) &&
- i_commit=$(printf 'index on %s' "$msg" |
+ i_commit=$(printf 'index on %s\n' "$msg" |
git commit-tree $i_tree -p $b_commit) ||
die "Cannot save the current index state"
w_commit=$(printf '%s\n' "$stash_msg" |
git commit-tree $w_tree -p $b_commit -p $i_commit) ||
die "Cannot record working tree state"
+}
+
+save_stash () {
+ stash_msg="$1"
+
+ if no_changes
+ then
+ echo 'No local changes to save'
+ exit 0
+ fi
+ test -f "$GIT_DIR/logs/$ref_stash" ||
+ clear_stash || die "Cannot initialize stash"
+
+ create_stash "$stash_msg"
+
+ # Make sure the reflog for stash is kept.
+ : >>"$GIT_DIR/logs/$ref_stash"
git update-ref -m "$stash_msg" $ref_stash $w_commit ||
die "Cannot save the current status"
- printf >&2 'Saved "%s"\n' "$stash_msg"
+ printf 'Saved working directory and index state "%s"\n' "$stash_msg"
}
have_stash () {
list_stash () {
have_stash || return 0
- git log --pretty=oneline -g "$@" $ref_stash |
+ git log --no-color --pretty=oneline -g "$@" $ref_stash -- |
sed -n -e 's/^[.0-9a-f]* refs\///p'
}
c_tree=$(git write-tree) ||
die 'Cannot apply a stash in the middle of a merge'
+ # stash records the work tree, and is a merge between the
+ # base commit (first parent) and the index tree (second parent).
s=$(git rev-parse --revs-only --no-flags --default $ref_stash "$@") &&
w_tree=$(git rev-parse --verify "$s:") &&
- b_tree=$(git rev-parse --verify "$s^:") ||
+ b_tree=$(git rev-parse --verify "$s^1:") &&
+ i_tree=$(git rev-parse --verify "$s^2:") ||
die "$*: no valid stashed state found"
- test -z "$unstash_index" || {
- git diff --binary $s^2^..$s^2 | git apply --cached
+ unstashed_index_tree=
+ if test -n "$unstash_index" && test "$b_tree" != "$i_tree"
+ then
+ git diff-tree --binary $s^2^..$s^2 | git apply --cached
test $? -ne 0 &&
die 'Conflicts in index. Try without --index.'
unstashed_index_tree=$(git-write-tree) ||
die 'Could not save index tree'
git reset
- }
+ fi
eval "
GITHEAD_$w_tree='Stashed changes' &&
if git-merge-recursive $b_tree -- $c_tree $w_tree
then
# No conflict
- a="$TMP-added" &&
- git diff --cached --name-only --diff-filter=A $c_tree >"$a" &&
- git read-tree --reset $c_tree &&
- git update-index --add --stdin <"$a" ||
- die "Cannot unstage modified files"
- git-status
- rm -f "$a"
- test -z "$unstash_index" || git read-tree $unstashed_index_tree
+ if test -n "$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 "Cannot unstage modified files"
+ rm -f "$a"
+ fi
+ git status || :
else
# Merge conflict; keep the exit status from merge-recursive
status=$?
- test -z "$unstash_index" || echo 'Index was not unstashed.' >&2
+ if test -n "$unstash_index"
+ then
+ echo >&2 'Index was not unstashed.'
+ fi
exit $status
fi
}
+drop_stash () {
+ have_stash || die 'No stash entries to drop'
+
+ if test $# = 0
+ then
+ set x "$ref_stash@{0}"
+ shift
+ fi
+ # Verify supplied argument looks like a stash entry
+ s=$(git rev-parse --revs-only --no-flags "$@") &&
+ git rev-parse --verify "$s:" > /dev/null 2>&1 &&
+ git rev-parse --verify "$s^1:" > /dev/null 2>&1 &&
+ git rev-parse --verify "$s^2:" > /dev/null 2>&1 ||
+ die "$*: not a valid stashed state"
+
+ git reflog delete --updateref --rewrite "$@" &&
+ echo "Dropped $* ($s)" || die "$*: Could not drop stash entry"
+
+ # clear_stash if we just dropped the last stash entry
+ git rev-parse --verify "$ref_stash@{0}" > /dev/null 2>&1 || clear_stash
+}
+
# Main command set
case "$1" in
list)
shift
show_stash "$@"
;;
+save)
+ shift
+ save_stash "$*" && git-reset --hard
+ ;;
apply)
shift
apply_stash "$@"
;;
clear)
- clear_stash
+ shift
+ clear_stash "$@"
;;
-help | usage)
- usage
+create)
+ if test $# -gt 0 && test "$1" = create
+ then
+ shift
+ fi
+ create_stash "$*" && echo "$w_commit"
+ ;;
+drop)
+ shift
+ drop_stash "$@"
+ ;;
+pop)
+ shift
+ if apply_stash "$@"
+ then
+ test -z "$unstash_index" || shift
+ drop_stash "$@"
+ fi
;;
*)
- if test $# -gt 0 && test "$1" = save
+ if test $# -eq 0
then
- shift
+ save_stash &&
+ echo '(To restore them type "git stash apply")' &&
+ git-reset --hard
+ else
+ usage
fi
- save_stash "$*" && git-reset --hard
;;
esac