1 /*
2 * libgit2 "stash" example - shows how to use the stash API
3 *
4 * Written by the libgit2 contributors
5 *
6 * To the extent possible under law, the author(s) have dedicated all copyright
7 * and related and neighboring rights to this software to the public domain
8 * worldwide. This software is distributed without any warranty.
9 *
10 * You should have received a copy of the CC0 Public Domain Dedication along
11 * with this software. If not, see
12 * <http://creativecommons.org/publicdomain/zero/1.0/>.
13 */
14
15 #include <stdarg.h>
16
17 #include "common.h"
18
19 enum subcmd {
20 SUBCMD_APPLY,
21 SUBCMD_LIST,
22 SUBCMD_POP,
23 SUBCMD_PUSH
24 };
25
26 struct opts {
27 enum subcmd cmd;
28 int argc;
29 char **argv;
30 };
31
usage(const char * fmt,...)32 static void usage(const char *fmt, ...)
33 {
34 va_list ap;
35
36 fputs("usage: git stash list\n", stderr);
37 fputs(" or: git stash ( pop | apply )\n", stderr);
38 fputs(" or: git stash [push]\n", stderr);
39 fputs("\n", stderr);
40
41 va_start(ap, fmt);
42 vfprintf(stderr, fmt, ap);
43 va_end(ap);
44
45 exit(1);
46 }
47
parse_subcommand(struct opts * opts,int argc,char * argv[])48 static void parse_subcommand(struct opts *opts, int argc, char *argv[])
49 {
50 char *arg = (argc < 2) ? "push" : argv[1];
51 enum subcmd cmd;
52
53 if (!strcmp(arg, "apply")) {
54 cmd = SUBCMD_APPLY;
55 } else if (!strcmp(arg, "list")) {
56 cmd = SUBCMD_LIST;
57 } else if (!strcmp(arg, "pop")) {
58 cmd = SUBCMD_POP;
59 } else if (!strcmp(arg, "push")) {
60 cmd = SUBCMD_PUSH;
61 } else {
62 usage("invalid command %s", arg);
63 return;
64 }
65
66 opts->cmd = cmd;
67 opts->argc = (argc < 2) ? argc - 1 : argc - 2;
68 opts->argv = argv;
69 }
70
cmd_apply(git_repository * repo,struct opts * opts)71 static int cmd_apply(git_repository *repo, struct opts *opts)
72 {
73 if (opts->argc)
74 usage("apply does not accept any parameters");
75
76 check_lg2(git_stash_apply(repo, 0, NULL),
77 "Unable to apply stash", NULL);
78
79 return 0;
80 }
81
list_stash_cb(size_t index,const char * message,const git_oid * stash_id,void * payload)82 static int list_stash_cb(size_t index, const char *message,
83 const git_oid *stash_id, void *payload)
84 {
85 UNUSED(stash_id);
86 UNUSED(payload);
87 printf("stash@{%"PRIuZ"}: %s\n", index, message);
88 return 0;
89 }
90
cmd_list(git_repository * repo,struct opts * opts)91 static int cmd_list(git_repository *repo, struct opts *opts)
92 {
93 if (opts->argc)
94 usage("list does not accept any parameters");
95
96 check_lg2(git_stash_foreach(repo, list_stash_cb, NULL),
97 "Unable to list stashes", NULL);
98
99 return 0;
100 }
101
cmd_push(git_repository * repo,struct opts * opts)102 static int cmd_push(git_repository *repo, struct opts *opts)
103 {
104 git_signature *signature;
105 git_commit *stash;
106 git_oid stashid;
107
108 if (opts->argc)
109 usage("push does not accept any parameters");
110
111 check_lg2(git_signature_default(&signature, repo),
112 "Unable to get signature", NULL);
113 check_lg2(git_stash_save(&stashid, repo, signature, NULL, GIT_STASH_DEFAULT),
114 "Unable to save stash", NULL);
115 check_lg2(git_commit_lookup(&stash, repo, &stashid),
116 "Unable to lookup stash commit", NULL);
117
118 printf("Saved working directory %s\n", git_commit_summary(stash));
119
120 git_signature_free(signature);
121 git_commit_free(stash);
122
123 return 0;
124 }
125
cmd_pop(git_repository * repo,struct opts * opts)126 static int cmd_pop(git_repository *repo, struct opts *opts)
127 {
128 if (opts->argc)
129 usage("pop does not accept any parameters");
130
131 check_lg2(git_stash_pop(repo, 0, NULL),
132 "Unable to pop stash", NULL);
133
134 printf("Dropped refs/stash@{0}\n");
135
136 return 0;
137 }
138
lg2_stash(git_repository * repo,int argc,char * argv[])139 int lg2_stash(git_repository *repo, int argc, char *argv[])
140 {
141 struct opts opts = { 0 };
142
143 parse_subcommand(&opts, argc, argv);
144
145 switch (opts.cmd) {
146 case SUBCMD_APPLY:
147 return cmd_apply(repo, &opts);
148 case SUBCMD_LIST:
149 return cmd_list(repo, &opts);
150 case SUBCMD_PUSH:
151 return cmd_push(repo, &opts);
152 case SUBCMD_POP:
153 return cmd_pop(repo, &opts);
154 }
155
156 return -1;
157 }
158