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#!/bin/sh # Copyright (c) 2007, Nanako Shiraishi dashless=$(basename "$0" | sed -e 's/-/ /') USAGE="list [<options>] or: $dashless (show | drop | pop ) [<stash>] or: $dashless apply [--index] [<stash>] or: $dashless branch <branchname> [<stash>] or: $dashless [save [--keep-index] [<message>]] or: $dashless clear" SUBDIRECTORY_OK=Yes OPTIONS_SPEC= . git-sh-setup require_work_tree cd_to_toplevel TMP="$GIT_DIR/.git-stash.$$" trap 'rm -f "$TMP-*"' 0 ref_stash=refs/stash no_changes () { git diff-index --quiet --cached HEAD --ignore-submodules -- && git diff-files --quiet --ignore-submodules } clear_stash () { if test $# != 0 then die "git stash clear with parameters is unimplemented" fi if current=$(git rev-parse -q --verify $ref_stash) then git update-ref -d $ref_stash $current fi } create_stash () { stash_msg="$1" git update-index -q --refresh if no_changes then exit 0 fi # state of the base commit if b_commit=$(git rev-parse --verify HEAD) then head=$(git log --no-color --abbrev-commit --pretty=oneline -n 1 HEAD --) else die "You do not have the initial commit yet" fi if branch=$(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 $b_commit) || die "Cannot save the current index state" # state of the working tree w_tree=$( ( rm -f "$TMP-index" && cp -p ${GIT_INDEX_FILE-"$GIT_DIR/index"} "$TMP-index" && GIT_INDEX_FILE="$TMP-index" && export GIT_INDEX_FILE && git read-tree -m $i_tree && git add -u && git write-tree && rm -f "$TMP-index" ) ) || die "Cannot save the current worktree state" # 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) || die "Cannot record working tree state" } save_stash () { keep_index= case "$1" in --keep-index) keep_index=t shift esac stash_msg="$*" git update-index -q --refresh 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 $w_commit || die "Cannot save the current status" printf 'Saved working directory and index state "%s"\n' "$stash_msg" git reset --hard if test -n "$keep_index" && test -n $i_tree then git read-tree --reset -u $i_tree fi } have_stash () { git rev-parse -q --verify $ref_stash >/dev/null } list_stash () { have_stash || return 0 git log --no-color --pretty=oneline -g "$@" $ref_stash -- | sed -n -e 's/^[.0-9a-f]* refs\///p' } show_stash () { flags=$(git rev-parse --no-revs --flags "$@") if test -z "$flags" then flags=--stat fi w_commit=$(git rev-parse --verify --default $ref_stash "$@") && b_commit=$(git rev-parse --verify "$w_commit^") && git diff $flags $b_commit $w_commit } apply_stash () { git update-index -q --refresh && git diff-files --quiet --ignore-submodules || die 'Cannot apply to a dirty working tree, please stage your changes' unstash_index= case "$1" in --index) unstash_index=t shift esac # current index state c_tree=$(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 --verify --default $ref_stash "$@") && w_tree=$(git rev-parse --verify "$s:") && b_tree=$(git rev-parse --verify "$s^1:") && i_tree=$(git rev-parse --verify "$s^2:") || die "$*: no valid stashed state found" unstashed_index_tree= if test -n "$unstash_index" && test "$b_tree" != "$i_tree" && test "$c_tree" != "$i_tree" then git diff-tree --binary $s^2^..$s^2 | git apply --cached test $? -ne 0 && die 'Conflicts in index. Try without --index.' unstashed_index_tree=$(git-write-tree) || die 'Could not save index tree' git reset fi eval " GITHEAD_$w_tree='Stashed changes' && GITHEAD_$c_tree='Updated upstream' && GITHEAD_$b_tree='Version stash was based on' && export GITHEAD_$w_tree GITHEAD_$c_tree GITHEAD_$b_tree " 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 "Cannot unstage modified files" rm -f "$a" fi git status || : else # Merge conflict; keep the exit status from merge-recursive status=$? 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=$(git rev-parse --verify "$@") && git rev-parse -q --verify "$s:" > /dev/null && git rev-parse -q --verify "$s^1:" > /dev/null && git rev-parse -q --verify "$s^2:" > /dev/null || die "$*: not a valid stashed state" git reflog delete --updateref --rewrite "$@" && echo "Dropped $* ($s)" || die "$*: Could not drop stash entry" # clear_stash if we just dropped the last stash entry git rev-parse -q --verify "$ref_stash@{0}" > /dev/null || clear_stash } apply_to_branch () { have_stash || die 'Nothing to apply' test -n "$1" || die 'No branch name specified' branch=$1 if test -z "$2" then set x "$ref_stash@{0}" fi stash=$2 git-checkout -b $branch $stash^ && apply_stash --index $stash && drop_stash $stash } # Main command set case "$1" in list) shift if test $# = 0 then set x -n 10 shift fi list_stash "$@" ;; 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 if apply_stash "$@" then test -z "$unstash_index" || shift drop_stash "$@" fi ;; branch) shift apply_to_branch "$@" ;; *) if test $# -eq 0 then save_stash && echo '(To restore them type "git stash apply")' else usage fi ;; esac
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