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Commit | Line | Data |
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f2c66ed1 NS |
1 | #!/bin/sh |
2 | # Copyright (c) 2007, Nanako Shiraishi | |
3 | ||
4 | USAGE='[ | list | show | apply | clear]' | |
5 | ||
3cd2491a | 6 | SUBDIRECTORY_OK=Yes |
f2c66ed1 NS |
7 | . git-sh-setup |
8 | require_work_tree | |
ceff079b | 9 | cd_to_toplevel |
f2c66ed1 NS |
10 | |
11 | TMP="$GIT_DIR/.git-stash.$$" | |
12 | trap 'rm -f "$TMP-*"' 0 | |
13 | ||
14 | ref_stash=refs/stash | |
15 | ||
16 | no_changes () { | |
5be60078 JH |
17 | git diff-index --quiet --cached HEAD && |
18 | git diff-files --quiet | |
f2c66ed1 NS |
19 | } |
20 | ||
21 | clear_stash () { | |
7ab3cc70 JH |
22 | if current=$(git rev-parse --verify $ref_stash 2>/dev/null) |
23 | then | |
24 | git update-ref -d refs/stash $current | |
25 | fi | |
f2c66ed1 NS |
26 | } |
27 | ||
28 | save_stash () { | |
9f62e18a JH |
29 | stash_msg="$1" |
30 | ||
f2c66ed1 NS |
31 | if no_changes |
32 | then | |
33 | echo >&2 'No local changes to save' | |
34 | exit 0 | |
35 | fi | |
36 | test -f "$GIT_DIR/logs/$ref_stash" || | |
37 | clear_stash || die "Cannot initialize stash" | |
38 | ||
f12e925a NS |
39 | # Make sure the reflog for stash is kept. |
40 | : >>"$GIT_DIR/logs/$ref_stash" | |
41 | ||
f2c66ed1 | 42 | # state of the base commit |
5be60078 | 43 | if b_commit=$(git rev-parse --verify HEAD) |
f2c66ed1 | 44 | then |
5be60078 | 45 | head=$(git log --abbrev-commit --pretty=oneline -n 1 HEAD) |
f2c66ed1 NS |
46 | else |
47 | die "You do not have the initial commit yet" | |
48 | fi | |
49 | ||
5be60078 | 50 | if branch=$(git symbolic-ref -q HEAD) |
f2c66ed1 NS |
51 | then |
52 | branch=${branch#refs/heads/} | |
53 | else | |
54 | branch='(no branch)' | |
55 | fi | |
56 | msg=$(printf '%s: %s' "$branch" "$head") | |
57 | ||
58 | # state of the index | |
5be60078 | 59 | i_tree=$(git write-tree) && |
f2c66ed1 | 60 | i_commit=$(printf 'index on %s' "$msg" | |
5be60078 | 61 | git commit-tree $i_tree -p $b_commit) || |
f2c66ed1 NS |
62 | die "Cannot save the current index state" |
63 | ||
64 | # state of the working tree | |
65 | w_tree=$( ( | |
b24f56d6 JH |
66 | rm -f "$TMP-index" && |
67 | cp -p ${GIT_INDEX_FILE-"$GIT_DIR/index"} "$TMP-index" && | |
f2c66ed1 NS |
68 | GIT_INDEX_FILE="$TMP-index" && |
69 | export GIT_INDEX_FILE && | |
b24f56d6 | 70 | git read-tree -m $i_tree && |
5be60078 JH |
71 | git add -u && |
72 | git write-tree && | |
f2c66ed1 NS |
73 | rm -f "$TMP-index" |
74 | ) ) || | |
75 | die "Cannot save the current worktree state" | |
76 | ||
77 | # create the stash | |
9f62e18a JH |
78 | if test -z "$stash_msg" |
79 | then | |
80 | stash_msg=$(printf 'WIP on %s' "$msg") | |
81 | else | |
82 | stash_msg=$(printf 'On %s: %s' "$branch" "$stash_msg") | |
83 | fi | |
84 | w_commit=$(printf '%s\n' "$stash_msg" | | |
5be60078 | 85 | git commit-tree $w_tree -p $b_commit -p $i_commit) || |
f2c66ed1 NS |
86 | die "Cannot record working tree state" |
87 | ||
9f62e18a | 88 | git update-ref -m "$stash_msg" $ref_stash $w_commit || |
f2c66ed1 | 89 | die "Cannot save the current status" |
9f62e18a | 90 | printf >&2 'Saved "%s"\n' "$stash_msg" |
f2c66ed1 NS |
91 | } |
92 | ||
401de405 | 93 | have_stash () { |
5be60078 | 94 | git rev-parse --verify $ref_stash >/dev/null 2>&1 |
401de405 JK |
95 | } |
96 | ||
f2c66ed1 | 97 | list_stash () { |
401de405 | 98 | have_stash || return 0 |
5be60078 | 99 | git log --pretty=oneline -g "$@" $ref_stash | |
f2c66ed1 NS |
100 | sed -n -e 's/^[.0-9a-f]* refs\///p' |
101 | } | |
102 | ||
103 | show_stash () { | |
5be60078 | 104 | flags=$(git rev-parse --no-revs --flags "$@") |
f2c66ed1 NS |
105 | if test -z "$flags" |
106 | then | |
107 | flags=--stat | |
108 | fi | |
5be60078 | 109 | s=$(git rev-parse --revs-only --no-flags --default $ref_stash "$@") |
f2c66ed1 | 110 | |
5be60078 JH |
111 | w_commit=$(git rev-parse --verify "$s") && |
112 | b_commit=$(git rev-parse --verify "$s^") && | |
113 | git diff $flags $b_commit $w_commit | |
f2c66ed1 NS |
114 | } |
115 | ||
116 | apply_stash () { | |
5be60078 | 117 | git diff-files --quiet || |
f2c66ed1 NS |
118 | die 'Cannot restore on top of a dirty state' |
119 | ||
150937c4 JS |
120 | unstash_index= |
121 | case "$1" in | |
122 | --index) | |
123 | unstash_index=t | |
124 | shift | |
125 | esac | |
126 | ||
f2c66ed1 | 127 | # current index state |
5be60078 | 128 | c_tree=$(git write-tree) || |
f2c66ed1 NS |
129 | die 'Cannot apply a stash in the middle of a merge' |
130 | ||
5be60078 JH |
131 | s=$(git rev-parse --revs-only --no-flags --default $ref_stash "$@") && |
132 | w_tree=$(git rev-parse --verify "$s:") && | |
133 | b_tree=$(git rev-parse --verify "$s^:") || | |
f2c66ed1 NS |
134 | die "$*: no valid stashed state found" |
135 | ||
150937c4 JS |
136 | test -z "$unstash_index" || { |
137 | git diff --binary $s^2^..$s^2 | git apply --cached | |
138 | test $? -ne 0 && | |
139 | die 'Conflicts in index. Try without --index.' | |
140 | unstashed_index_tree=$(git-write-tree) || | |
141 | die 'Could not save index tree' | |
142 | git reset | |
143 | } | |
144 | ||
f2c66ed1 NS |
145 | eval " |
146 | GITHEAD_$w_tree='Stashed changes' && | |
147 | GITHEAD_$c_tree='Updated upstream' && | |
148 | GITHEAD_$b_tree='Version stash was based on' && | |
149 | export GITHEAD_$w_tree GITHEAD_$c_tree GITHEAD_$b_tree | |
150 | " | |
151 | ||
152 | if git-merge-recursive $b_tree -- $c_tree $w_tree | |
153 | then | |
154 | # No conflict | |
155 | a="$TMP-added" && | |
5be60078 JH |
156 | git diff --cached --name-only --diff-filter=A $c_tree >"$a" && |
157 | git read-tree --reset $c_tree && | |
158 | git update-index --add --stdin <"$a" || | |
f2c66ed1 NS |
159 | die "Cannot unstage modified files" |
160 | git-status | |
161 | rm -f "$a" | |
150937c4 | 162 | test -z "$unstash_index" || git read-tree $unstashed_index_tree |
f2c66ed1 NS |
163 | else |
164 | # Merge conflict; keep the exit status from merge-recursive | |
150937c4 JS |
165 | status=$? |
166 | test -z "$unstash_index" || echo 'Index was not unstashed.' >&2 | |
167 | exit $status | |
f2c66ed1 NS |
168 | fi |
169 | } | |
170 | ||
171 | # Main command set | |
172 | case "$1" in | |
fcb10a96 JH |
173 | list) |
174 | shift | |
f2c66ed1 NS |
175 | if test $# = 0 |
176 | then | |
177 | set x -n 10 | |
178 | shift | |
179 | fi | |
180 | list_stash "$@" | |
181 | ;; | |
182 | show) | |
183 | shift | |
184 | show_stash "$@" | |
185 | ;; | |
186 | apply) | |
187 | shift | |
188 | apply_stash "$@" | |
189 | ;; | |
190 | clear) | |
191 | clear_stash | |
192 | ;; | |
9f62e18a JH |
193 | help | usage) |
194 | usage | |
f2c66ed1 NS |
195 | ;; |
196 | *) | |
9f62e18a JH |
197 | if test $# -gt 0 && test "$1" = save |
198 | then | |
199 | shift | |
200 | fi | |
201 | save_stash "$*" && git-reset --hard | |
202 | ;; | |
f2c66ed1 | 203 | esac |