#!/bin/sh # Copyright (c) 2007, Nanako Shiraishi USAGE='[ | list | show | apply | clear]' . git-sh-setup require_work_tree TMP="$GIT_DIR/.git-stash.$$" trap 'rm -f "$TMP-*"' 0 ref_stash=refs/stash no_changes () { git diff-index --quiet --cached HEAD && git diff-files --quiet } clear_stash () { logfile="$GIT_DIR/logs/$ref_stash" && mkdir -p "$(dirname "$logfile")" && : >"$logfile" } save_stash () { 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) 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=$(printf 'index on %s' "$msg" | git commit-tree $i_tree -p $b_commit) || die "Cannot save the current index state" # state of the working tree w_tree=$( ( GIT_INDEX_FILE="$TMP-index" && export GIT_INDEX_FILE && rm -f "$TMP-index" && git read-tree $i_tree && git add -u && git write-tree && rm -f "$TMP-index" ) ) || die "Cannot save the current worktree state" # create the stash w_commit=$(printf 'WIP on %s\n' "$msg" | git commit-tree $w_tree -p $b_commit -p $i_commit) || die "Cannot record working tree state" git update-ref -m "$msg" $ref_stash $w_commit || die "Cannot save the current status" printf >&2 'Saved WIP on %s\n' "$msg" } have_stash () { git rev-parse --verify $ref_stash >/dev/null 2>&1 } list_stash () { have_stash || return 0 git log --pretty=oneline -g "$@" $ref_stash | sed -n -e 's/^[.0-9a-f]* refs\///p' } show_stash () { flags=$(git rev-parse --no-revs --flags "$@") if test -z "$flags" then flags=--stat fi s=$(git rev-parse --revs-only --no-flags --default $ref_stash "$@") w_commit=$(git rev-parse --verify "$s") && b_commit=$(git rev-parse --verify "$s^") && git diff $flags $b_commit $w_commit } apply_stash () { git diff-files --quiet || die 'Cannot restore on top of a dirty state' # current index state c_tree=$(git write-tree) || die 'Cannot apply a stash in the middle of a merge' 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^:") || die "$*: no valid stashed state found" eval " GITHEAD_$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 $w_tree then # No conflict a="$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" else # Merge conflict; keep the exit status from merge-recursive exit fi } # Main command set case "$1" in list) shift if test $# = 0 then set x -n 10 shift fi list_stash "$@" ;; show) shift show_stash "$@" ;; apply) shift apply_stash "$@" ;; clear) clear_stash ;; save | '') save_stash && git-reset --hard ;; *) usage esac