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Commit | Line | Data |
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85023577 | 1 | #include "builtin.h" |
2b11e317 | 2 | #include "cache.h" |
fd5c363d TF |
3 | #include "exec_cmd.h" |
4 | #include "help.h" | |
575ba9d6 | 5 | #include "quote.h" |
d8e96fd8 | 6 | #include "run-command.h" |
8e49d503 | 7 | |
822a7d50 | 8 | const char git_usage_string[] = |
f2dd8c37 | 9 | "git [--version] [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]\n" |
a1bea2c1 JT |
10 | " [-p|--paginate|--no-pager] [--no-replace-objects] [--bare]\n" |
11 | " [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]\n" | |
293b07f1 | 12 | " [-c name=value] [--help]\n" |
62b4698e | 13 | " <command> [<args>]"; |
822a7d50 | 14 | |
b7d96819 | 15 | const char git_more_info_string[] = |
62b4698e | 16 | "See 'git help <command>' for more information on a specific command."; |
b7d96819 | 17 | |
e37c1329 | 18 | static struct startup_info git_startup_info; |
4e10738a JK |
19 | static int use_pager = -1; |
20 | struct pager_config { | |
21 | const char *cmd; | |
9bad7233 JK |
22 | int want; |
23 | char *value; | |
4e10738a JK |
24 | }; |
25 | ||
26 | static int pager_command_config(const char *var, const char *value, void *data) | |
27 | { | |
28 | struct pager_config *c = data; | |
9bad7233 JK |
29 | if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd)) { |
30 | int b = git_config_maybe_bool(var, value); | |
31 | if (b >= 0) | |
32 | c->want = b; | |
33 | else { | |
34 | c->want = 1; | |
35 | c->value = xstrdup(value); | |
36 | } | |
37 | } | |
4e10738a JK |
38 | return 0; |
39 | } | |
40 | ||
41 | /* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */ | |
42 | int check_pager_config(const char *cmd) | |
43 | { | |
44 | struct pager_config c; | |
45 | c.cmd = cmd; | |
9bad7233 JK |
46 | c.want = -1; |
47 | c.value = NULL; | |
4e10738a | 48 | git_config(pager_command_config, &c); |
9bad7233 JK |
49 | if (c.value) |
50 | pager_program = c.value; | |
51 | return c.want; | |
4e10738a JK |
52 | } |
53 | ||
54 | static void commit_pager_choice(void) { | |
55 | switch (use_pager) { | |
56 | case 0: | |
57 | setenv("GIT_PAGER", "cat", 1); | |
58 | break; | |
59 | case 1: | |
60 | setup_pager(); | |
61 | break; | |
62 | default: | |
63 | break; | |
64 | } | |
65 | } | |
66 | ||
4b25d091 | 67 | static int handle_options(const char ***argv, int *argc, int *envchanged) |
4ab243a9 | 68 | { |
73546c08 | 69 | const char **orig_argv = *argv; |
4ab243a9 JS |
70 | |
71 | while (*argc > 0) { | |
72 | const char *cmd = (*argv)[0]; | |
73 | if (cmd[0] != '-') | |
74 | break; | |
75 | ||
6acbcb92 JS |
76 | /* |
77 | * For legacy reasons, the "version" and "help" | |
78 | * commands can be written with "--" prepended | |
79 | * to make them look like flags. | |
80 | */ | |
81 | if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version")) | |
82 | break; | |
83 | ||
84 | /* | |
85 | * Check remaining flags. | |
86 | */ | |
cc44c765 | 87 | if (!prefixcmp(cmd, "--exec-path")) { |
6acbcb92 JS |
88 | cmd += 11; |
89 | if (*cmd == '=') | |
384df833 | 90 | git_set_argv_exec_path(cmd + 1); |
6acbcb92 JS |
91 | else { |
92 | puts(git_exec_path()); | |
93 | exit(0); | |
94 | } | |
89a56bfb MH |
95 | } else if (!strcmp(cmd, "--html-path")) { |
96 | puts(system_path(GIT_HTML_PATH)); | |
97 | exit(0); | |
f2dd8c37 JS |
98 | } else if (!strcmp(cmd, "--man-path")) { |
99 | puts(system_path(GIT_MAN_PATH)); | |
100 | exit(0); | |
101 | } else if (!strcmp(cmd, "--info-path")) { | |
102 | puts(system_path(GIT_INFO_PATH)); | |
103 | exit(0); | |
6acbcb92 | 104 | } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) { |
4e10738a | 105 | use_pager = 1; |
463a849d | 106 | } else if (!strcmp(cmd, "--no-pager")) { |
4e10738a | 107 | use_pager = 0; |
463a849d MM |
108 | if (envchanged) |
109 | *envchanged = 1; | |
b0fa7ab5 CC |
110 | } else if (!strcmp(cmd, "--no-replace-objects")) { |
111 | read_replace_refs = 0; | |
6476b38b CC |
112 | setenv(NO_REPLACE_OBJECTS_ENVIRONMENT, "1", 1); |
113 | if (envchanged) | |
114 | *envchanged = 1; | |
6acbcb92 | 115 | } else if (!strcmp(cmd, "--git-dir")) { |
c321f00d BG |
116 | if (*argc < 2) { |
117 | fprintf(stderr, "No directory given for --git-dir.\n" ); | |
118 | usage(git_usage_string); | |
119 | } | |
45b09794 | 120 | setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1); |
4394efec ML |
121 | if (envchanged) |
122 | *envchanged = 1; | |
6acbcb92 JS |
123 | (*argv)++; |
124 | (*argc)--; | |
cc44c765 | 125 | } else if (!prefixcmp(cmd, "--git-dir=")) { |
45b09794 | 126 | setenv(GIT_DIR_ENVIRONMENT, cmd + 10, 1); |
4394efec ML |
127 | if (envchanged) |
128 | *envchanged = 1; | |
a1bea2c1 JT |
129 | } else if (!strcmp(cmd, "--namespace")) { |
130 | if (*argc < 2) { | |
131 | fprintf(stderr, "No namespace given for --namespace.\n" ); | |
132 | usage(git_usage_string); | |
133 | } | |
134 | setenv(GIT_NAMESPACE_ENVIRONMENT, (*argv)[1], 1); | |
135 | if (envchanged) | |
136 | *envchanged = 1; | |
137 | (*argv)++; | |
138 | (*argc)--; | |
139 | } else if (!prefixcmp(cmd, "--namespace=")) { | |
140 | setenv(GIT_NAMESPACE_ENVIRONMENT, cmd + 12, 1); | |
141 | if (envchanged) | |
142 | *envchanged = 1; | |
892c41b9 ML |
143 | } else if (!strcmp(cmd, "--work-tree")) { |
144 | if (*argc < 2) { | |
145 | fprintf(stderr, "No directory given for --work-tree.\n" ); | |
146 | usage(git_usage_string); | |
147 | } | |
148 | setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1); | |
4394efec ML |
149 | if (envchanged) |
150 | *envchanged = 1; | |
892c41b9 ML |
151 | (*argv)++; |
152 | (*argc)--; | |
153 | } else if (!prefixcmp(cmd, "--work-tree=")) { | |
154 | setenv(GIT_WORK_TREE_ENVIRONMENT, cmd + 12, 1); | |
4394efec ML |
155 | if (envchanged) |
156 | *envchanged = 1; | |
6acbcb92 | 157 | } else if (!strcmp(cmd, "--bare")) { |
ef5ddb2f | 158 | static char git_dir[PATH_MAX+1]; |
6adcca3f | 159 | is_bare_repository_cfg = 1; |
9277d602 | 160 | setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 0); |
4394efec ML |
161 | if (envchanged) |
162 | *envchanged = 1; | |
8b1fa778 AR |
163 | } else if (!strcmp(cmd, "-c")) { |
164 | if (*argc < 2) { | |
165 | fprintf(stderr, "-c expects a configuration string\n" ); | |
166 | usage(git_usage_string); | |
167 | } | |
2b64fc89 | 168 | git_config_push_parameter((*argv)[1]); |
8b1fa778 AR |
169 | (*argv)++; |
170 | (*argc)--; | |
6acbcb92 JS |
171 | } else { |
172 | fprintf(stderr, "Unknown option: %s\n", cmd); | |
822a7d50 | 173 | usage(git_usage_string); |
6acbcb92 | 174 | } |
4ab243a9 JS |
175 | |
176 | (*argv)++; | |
177 | (*argc)--; | |
4ab243a9 | 178 | } |
73546c08 | 179 | return (*argv) - orig_argv; |
4ab243a9 JS |
180 | } |
181 | ||
2b11e317 JS |
182 | static int handle_alias(int *argcp, const char ***argv) |
183 | { | |
af05d679 | 184 | int envchanged = 0, ret = 0, saved_errno = errno; |
2b11e317 | 185 | const char *subdir; |
0347a8c7 | 186 | int count, option_count; |
4b25d091 | 187 | const char **new_argv; |
94351118 JK |
188 | const char *alias_command; |
189 | char *alias_string; | |
e85dc0a3 | 190 | int unused_nongit; |
2b11e317 | 191 | |
e85dc0a3 | 192 | subdir = setup_git_directory_gently(&unused_nongit); |
0347a8c7 ML |
193 | |
194 | alias_command = (*argv)[0]; | |
94351118 | 195 | alias_string = alias_lookup(alias_command); |
0347a8c7 | 196 | if (alias_string) { |
dfd42a3c | 197 | if (alias_string[0] == '!') { |
7f51f8bc EFL |
198 | const char **alias_argv; |
199 | int argc = *argcp, i; | |
200 | ||
030149a4 | 201 | commit_pager_choice(); |
7f51f8bc EFL |
202 | |
203 | /* build alias_argv */ | |
204 | alias_argv = xmalloc(sizeof(*alias_argv) * (argc + 1)); | |
205 | alias_argv[0] = alias_string + 1; | |
206 | for (i = 1; i < argc; ++i) | |
207 | alias_argv[i] = (*argv)[i]; | |
208 | alias_argv[argc] = NULL; | |
209 | ||
26b05251 | 210 | ret = run_command_v_opt(alias_argv, RUN_USING_SHELL); |
7f51f8bc EFL |
211 | if (ret >= 0) /* normal exit */ |
212 | exit(ret); | |
213 | ||
214 | die_errno("While expanding alias '%s': '%s'", | |
215 | alias_command, alias_string + 1); | |
dfd42a3c | 216 | } |
0347a8c7 | 217 | count = split_cmdline(alias_string, &new_argv); |
dc4179f9 | 218 | if (count < 0) |
ad9ac6db GB |
219 | die("Bad alias.%s string: %s", alias_command, |
220 | split_cmdline_strerror(count)); | |
4394efec ML |
221 | option_count = handle_options(&new_argv, &count, &envchanged); |
222 | if (envchanged) | |
223 | die("alias '%s' changes environment variables\n" | |
224 | "You can use '!git' in the alias to do this.", | |
225 | alias_command); | |
0347a8c7 ML |
226 | memmove(new_argv - option_count, new_argv, |
227 | count * sizeof(char *)); | |
228 | new_argv -= option_count; | |
229 | ||
230 | if (count < 1) | |
231 | die("empty alias for %s", alias_command); | |
232 | ||
233 | if (!strcmp(alias_command, new_argv[0])) | |
234 | die("recursive alias: %s", alias_command); | |
235 | ||
b319ce4c | 236 | trace_argv_printf(new_argv, |
6ce4e61f CC |
237 | "trace: alias expansion: %s =>", |
238 | alias_command); | |
575ba9d6 | 239 | |
4b25d091 | 240 | new_argv = xrealloc(new_argv, sizeof(char *) * |
6167c136 | 241 | (count + *argcp)); |
0347a8c7 | 242 | /* insert after command name */ |
4b25d091 | 243 | memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp); |
2b11e317 | 244 | |
0347a8c7 ML |
245 | *argv = new_argv; |
246 | *argcp += count - 1; | |
2b11e317 | 247 | |
0347a8c7 | 248 | ret = 1; |
2b11e317 JS |
249 | } |
250 | ||
7be77de2 | 251 | if (subdir && chdir(subdir)) |
d824cbba | 252 | die_errno("Cannot change to '%s'", subdir); |
2b11e317 | 253 | |
47e5c0ca JS |
254 | errno = saved_errno; |
255 | ||
2b11e317 JS |
256 | return ret; |
257 | } | |
258 | ||
70827b15 | 259 | const char git_version_string[] = GIT_VERSION; |
5b84f4d8 | 260 | |
ee38dfb8 NTND |
261 | #define RUN_SETUP (1<<0) |
262 | #define RUN_SETUP_GENTLY (1<<1) | |
263 | #define USE_PAGER (1<<2) | |
7eff28a9 SP |
264 | /* |
265 | * require working tree to be present -- anything uses this needs | |
266 | * RUN_SETUP for reading from the configuration file. | |
267 | */ | |
ee38dfb8 | 268 | #define NEED_WORK_TREE (1<<3) |
a633fca0 | 269 | |
47d0b4ff LT |
270 | struct cmd_struct { |
271 | const char *cmd; | |
272 | int (*fn)(int, const char **, const char *); | |
273 | int option; | |
274 | }; | |
275 | ||
f172f334 | 276 | static int run_builtin(struct cmd_struct *p, int argc, const char **argv) |
47d0b4ff | 277 | { |
99caeed0 | 278 | int status, help; |
0f157315 | 279 | struct stat st; |
47d0b4ff LT |
280 | const char *prefix; |
281 | ||
282 | prefix = NULL; | |
99caeed0 JN |
283 | help = argc == 2 && !strcmp(argv[1], "-h"); |
284 | if (!help) { | |
285 | if (p->option & RUN_SETUP) | |
286 | prefix = setup_git_directory(); | |
ee38dfb8 NTND |
287 | if (p->option & RUN_SETUP_GENTLY) { |
288 | int nongit_ok; | |
289 | prefix = setup_git_directory_gently(&nongit_ok); | |
290 | } | |
99caeed0 | 291 | |
ee38dfb8 | 292 | if (use_pager == -1 && p->option & (RUN_SETUP | RUN_SETUP_GENTLY)) |
99caeed0 JN |
293 | use_pager = check_pager_config(p->cmd); |
294 | if (use_pager == -1 && p->option & USE_PAGER) | |
295 | use_pager = 1; | |
a9ca8a85 NTND |
296 | |
297 | if ((p->option & (RUN_SETUP | RUN_SETUP_GENTLY)) && | |
298 | startup_info->have_repository) /* get_git_dir() may set up repo, avoid that */ | |
299 | trace_repo_setup(prefix); | |
99caeed0 | 300 | } |
4e10738a JK |
301 | commit_pager_choice(); |
302 | ||
99caeed0 | 303 | if (!help && p->option & NEED_WORK_TREE) |
59f0f2f3 MH |
304 | setup_work_tree(); |
305 | ||
b319ce4c | 306 | trace_argv_printf(argv, "trace: built-in: git"); |
47d0b4ff | 307 | |
0f157315 LT |
308 | status = p->fn(argc, argv, prefix); |
309 | if (status) | |
47e3de0e | 310 | return status; |
0f157315 LT |
311 | |
312 | /* Somebody closed stdout? */ | |
313 | if (fstat(fileno(stdout), &st)) | |
314 | return 0; | |
315 | /* Ignore write errors for pipes and sockets.. */ | |
316 | if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) | |
317 | return 0; | |
318 | ||
319 | /* Check for ENOSPC and EIO errors.. */ | |
0227f988 | 320 | if (fflush(stdout)) |
d824cbba | 321 | die_errno("write failure on standard output"); |
0227f988 LT |
322 | if (ferror(stdout)) |
323 | die("unknown write failure on standard output"); | |
324 | if (fclose(stdout)) | |
d824cbba | 325 | die_errno("close failed on standard output"); |
0f157315 | 326 | return 0; |
47d0b4ff LT |
327 | } |
328 | ||
329 | static void handle_internal_command(int argc, const char **argv) | |
231af832 LT |
330 | { |
331 | const char *cmd = argv[0]; | |
47d0b4ff | 332 | static struct cmd_struct commands[] = { |
7ae3df8c | 333 | { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE }, |
d97bc5de | 334 | { "annotate", cmd_annotate, RUN_SETUP }, |
d1ea8962 | 335 | { "apply", cmd_apply, RUN_SETUP_GENTLY }, |
265d5280 | 336 | { "archive", cmd_archive }, |
24c51280 | 337 | { "bisect--helper", cmd_bisect__helper, RUN_SETUP }, |
4f0219a4 | 338 | { "blame", cmd_blame, RUN_SETUP }, |
1da1b3a3 | 339 | { "branch", cmd_branch, RUN_SETUP }, |
2cb60093 | 340 | { "bundle", cmd_bundle, RUN_SETUP_GENTLY }, |
efffea03 | 341 | { "cat-file", cmd_cat_file, RUN_SETUP }, |
ef5dd8a9 NTND |
342 | { "check-attr", cmd_check_attr, RUN_SETUP }, |
343 | { "check-ref-format", cmd_check_ref_format }, | |
782c2d65 | 344 | { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE }, |
4465f410 JS |
345 | { "checkout-index", cmd_checkout_index, |
346 | RUN_SETUP | NEED_WORK_TREE}, | |
e827633a | 347 | { "cherry", cmd_cherry, RUN_SETUP }, |
7ae3df8c | 348 | { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE }, |
113f10f2 | 349 | { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE }, |
ef5dd8a9 | 350 | { "clone", cmd_clone }, |
f5bbc322 | 351 | { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE }, |
efffea03 | 352 | { "commit-tree", cmd_commit_tree, RUN_SETUP }, |
3ba7e6e2 | 353 | { "config", cmd_config, RUN_SETUP_GENTLY }, |
8112894d | 354 | { "count-objects", cmd_count_objects, RUN_SETUP }, |
9a0eaf83 | 355 | { "describe", cmd_describe, RUN_SETUP }, |
89d07f75 | 356 | { "diff", cmd_diff }, |
4f38f6b5 | 357 | { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE }, |
efffea03 | 358 | { "diff-index", cmd_diff_index, RUN_SETUP }, |
efffea03 | 359 | { "diff-tree", cmd_diff_tree, RUN_SETUP }, |
f2dc849e | 360 | { "fast-export", cmd_fast_export, RUN_SETUP }, |
b888d61c | 361 | { "fetch", cmd_fetch, RUN_SETUP }, |
2d4177c0 | 362 | { "fetch-pack", cmd_fetch_pack, RUN_SETUP }, |
efffea03 | 363 | { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP }, |
9f613ddd | 364 | { "for-each-ref", cmd_for_each_ref, RUN_SETUP }, |
efffea03 | 365 | { "format-patch", cmd_format_patch, RUN_SETUP }, |
b4dfefe0 MW |
366 | { "fsck", cmd_fsck, RUN_SETUP }, |
367 | { "fsck-objects", cmd_fsck, RUN_SETUP }, | |
6757ada4 | 368 | { "gc", cmd_gc, RUN_SETUP }, |
f754fa9c | 369 | { "get-tar-commit-id", cmd_get_tar_commit_id }, |
ff38d1a9 | 370 | { "grep", cmd_grep, RUN_SETUP_GENTLY }, |
b28a1ce0 | 371 | { "hash-object", cmd_hash_object }, |
f754fa9c | 372 | { "help", cmd_help }, |
e0fce074 | 373 | { "index-pack", cmd_index_pack, RUN_SETUP_GENTLY }, |
515377ea | 374 | { "init", cmd_init_db }, |
f754fa9c | 375 | { "init-db", cmd_init_db }, |
1fda91b5 | 376 | { "log", cmd_log, RUN_SETUP }, |
efffea03 | 377 | { "ls-files", cmd_ls_files, RUN_SETUP }, |
f0ef6a6e | 378 | { "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY }, |
ef5dd8a9 | 379 | { "ls-tree", cmd_ls_tree, RUN_SETUP }, |
f754fa9c JH |
380 | { "mailinfo", cmd_mailinfo }, |
381 | { "mailsplit", cmd_mailsplit }, | |
1c7b76be | 382 | { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE }, |
71dfbf22 | 383 | { "merge-base", cmd_merge_base, RUN_SETUP }, |
3668d423 | 384 | { "merge-file", cmd_merge_file, RUN_SETUP_GENTLY }, |
0ecace72 | 385 | { "merge-index", cmd_merge_index, RUN_SETUP }, |
a00a42ae | 386 | { "merge-ours", cmd_merge_ours, RUN_SETUP }, |
e1b3a2ca | 387 | { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
8cc5b290 AP |
388 | { "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
389 | { "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, | |
1736855c | 390 | { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
907a7cb5 | 391 | { "merge-tree", cmd_merge_tree, RUN_SETUP }, |
112dd514 | 392 | { "mktag", cmd_mktag, RUN_SETUP }, |
633e3556 | 393 | { "mktree", cmd_mktree, RUN_SETUP }, |
7ae3df8c | 394 | { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE }, |
efffea03 | 395 | { "name-rev", cmd_name_rev, RUN_SETUP }, |
cd067d3b | 396 | { "notes", cmd_notes, RUN_SETUP }, |
efffea03 | 397 | { "pack-objects", cmd_pack_objects, RUN_SETUP }, |
377d0276 | 398 | { "pack-redundant", cmd_pack_redundant, RUN_SETUP }, |
ef5dd8a9 | 399 | { "pack-refs", cmd_pack_refs, RUN_SETUP }, |
dedc0ec5 | 400 | { "patch-id", cmd_patch_id }, |
f0ef6a6e | 401 | { "peek-remote", cmd_ls_remote, RUN_SETUP_GENTLY }, |
d97bc5de | 402 | { "pickaxe", cmd_blame, RUN_SETUP }, |
efffea03 JH |
403 | { "prune", cmd_prune, RUN_SETUP }, |
404 | { "prune-packed", cmd_prune_packed, RUN_SETUP }, | |
102cb085 | 405 | { "push", cmd_push, RUN_SETUP }, |
efffea03 | 406 | { "read-tree", cmd_read_tree, RUN_SETUP }, |
be5908ae | 407 | { "receive-pack", cmd_receive_pack }, |
4264dc15 | 408 | { "reflog", cmd_reflog, RUN_SETUP }, |
211c8968 | 409 | { "remote", cmd_remote, RUN_SETUP }, |
7f3ecebf | 410 | { "remote-ext", cmd_remote_ext }, |
3a9ed4bd | 411 | { "remote-fd", cmd_remote_fd }, |
54b0c1e0 | 412 | { "replace", cmd_replace, RUN_SETUP }, |
6390c905 | 413 | { "repo-config", cmd_repo_config, RUN_SETUP_GENTLY }, |
658f3650 | 414 | { "rerere", cmd_rerere, RUN_SETUP }, |
0e5a7faa | 415 | { "reset", cmd_reset, RUN_SETUP }, |
efffea03 | 416 | { "rev-list", cmd_rev_list, RUN_SETUP }, |
5410a02a | 417 | { "rev-parse", cmd_rev_parse }, |
7ae3df8c | 418 | { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE }, |
271bb087 | 419 | { "rm", cmd_rm, RUN_SETUP }, |
96249c04 | 420 | { "send-pack", cmd_send_pack, RUN_SETUP }, |
773b69bf | 421 | { "shortlog", cmd_shortlog, RUN_SETUP_GENTLY | USE_PAGER }, |
1fda91b5 | 422 | { "show", cmd_show, RUN_SETUP }, |
ef5dd8a9 NTND |
423 | { "show-branch", cmd_show_branch, RUN_SETUP }, |
424 | { "show-ref", cmd_show_ref, RUN_SETUP }, | |
425 | { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE }, | |
10762323 | 426 | { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE }, |
f754fa9c | 427 | { "stripspace", cmd_stripspace }, |
efffea03 | 428 | { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP }, |
62e09ce9 | 429 | { "tag", cmd_tag, RUN_SETUP }, |
9cb90b80 | 430 | { "tar-tree", cmd_tar_tree }, |
b5325818 | 431 | { "unpack-file", cmd_unpack_file, RUN_SETUP }, |
efffea03 JH |
432 | { "unpack-objects", cmd_unpack_objects, RUN_SETUP }, |
433 | { "update-index", cmd_update_index, RUN_SETUP }, | |
434 | { "update-ref", cmd_update_ref, RUN_SETUP }, | |
53a1116c | 435 | { "update-server-info", cmd_update_server_info, RUN_SETUP }, |
39345a21 | 436 | { "upload-archive", cmd_upload_archive }, |
1bc01efe | 437 | { "upload-archive--writer", cmd_upload_archive_writer }, |
2bc8c1a8 | 438 | { "var", cmd_var, RUN_SETUP_GENTLY }, |
ef5dd8a9 | 439 | { "verify-pack", cmd_verify_pack }, |
2ae68fcb | 440 | { "verify-tag", cmd_verify_tag, RUN_SETUP }, |
f754fa9c | 441 | { "version", cmd_version }, |
1fda91b5 | 442 | { "whatchanged", cmd_whatchanged, RUN_SETUP }, |
efffea03 | 443 | { "write-tree", cmd_write_tree, RUN_SETUP }, |
231af832 LT |
444 | }; |
445 | int i; | |
23326d14 JS |
446 | static const char ext[] = STRIP_EXTENSION; |
447 | ||
448 | if (sizeof(ext) > 1) { | |
449 | i = strlen(argv[0]) - strlen(ext); | |
450 | if (i > 0 && !strcmp(argv[0] + i, ext)) { | |
e8eec71d | 451 | char *argv0 = xstrdup(argv[0]); |
23326d14 JS |
452 | argv[0] = cmd = argv0; |
453 | argv0[i] = '\0'; | |
454 | } | |
455 | } | |
231af832 | 456 | |
1cd95087 LT |
457 | /* Turn "git cmd --help" into "git help cmd" */ |
458 | if (argc > 1 && !strcmp(argv[1], "--help")) { | |
459 | argv[1] = argv[0]; | |
460 | argv[0] = cmd = "help"; | |
461 | } | |
462 | ||
231af832 LT |
463 | for (i = 0; i < ARRAY_SIZE(commands); i++) { |
464 | struct cmd_struct *p = commands+i; | |
465 | if (strcmp(p->cmd, cmd)) | |
466 | continue; | |
f172f334 | 467 | exit(run_builtin(p, argc, argv)); |
231af832 LT |
468 | } |
469 | } | |
470 | ||
7550be0a JH |
471 | static void execv_dashed_external(const char **argv) |
472 | { | |
f285a2d7 | 473 | struct strbuf cmd = STRBUF_INIT; |
7550be0a | 474 | const char *tmp; |
d8e96fd8 | 475 | int status; |
7550be0a | 476 | |
92058e4d JK |
477 | if (use_pager == -1) |
478 | use_pager = check_pager_config(argv[0]); | |
030149a4 JN |
479 | commit_pager_choice(); |
480 | ||
7550be0a JH |
481 | strbuf_addf(&cmd, "git-%s", argv[0]); |
482 | ||
483 | /* | |
484 | * argv[0] must be the git command, but the argv array | |
485 | * belongs to the caller, and may be reused in | |
486 | * subsequent loop iterations. Save argv[0] and | |
487 | * restore it on error. | |
488 | */ | |
489 | tmp = argv[0]; | |
490 | argv[0] = cmd.buf; | |
491 | ||
492 | trace_argv_printf(argv, "trace: exec:"); | |
493 | ||
d8e96fd8 JK |
494 | /* |
495 | * if we fail because the command is not found, it is | |
496 | * OK to return. Otherwise, we just pass along the status code. | |
497 | */ | |
c024beb5 | 498 | status = run_command_v_opt(argv, RUN_SILENT_EXEC_FAILURE); |
0ac77ec3 | 499 | if (status >= 0 || errno != ENOENT) |
5709e036 | 500 | exit(status); |
7550be0a JH |
501 | |
502 | argv[0] = tmp; | |
503 | ||
504 | strbuf_release(&cmd); | |
505 | } | |
506 | ||
a907e1b6 AS |
507 | static int run_argv(int *argcp, const char ***argv) |
508 | { | |
509 | int done_alias = 0; | |
510 | ||
511 | while (1) { | |
512 | /* See if it's an internal command */ | |
513 | handle_internal_command(*argcp, *argv); | |
514 | ||
515 | /* .. then try the external ones */ | |
516 | execv_dashed_external(*argv); | |
517 | ||
518 | /* It could be an alias -- this works around the insanity | |
519 | * of overriding "git log" with "git show" by having | |
520 | * alias.log = show | |
521 | */ | |
522 | if (done_alias || !handle_alias(argcp, argv)) | |
523 | break; | |
524 | done_alias = 1; | |
525 | } | |
526 | ||
527 | return done_alias; | |
528 | } | |
529 | ||
7550be0a | 530 | |
47d0b4ff | 531 | int main(int argc, const char **argv) |
8e49d503 | 532 | { |
4dd47c3b | 533 | const char *cmd; |
231af832 | 534 | |
e37c1329 NTND |
535 | startup_info = &git_startup_info; |
536 | ||
2cd72b0b SP |
537 | cmd = git_extract_argv0_path(argv[0]); |
538 | if (!cmd) | |
4dd47c3b | 539 | cmd = "git-help"; |
8e49d503 | 540 | |
5e9637c6 ÆAB |
541 | git_setup_gettext(); |
542 | ||
231af832 LT |
543 | /* |
544 | * "git-xxxx" is the same as "git xxxx", but we obviously: | |
545 | * | |
546 | * - cannot take flags in between the "git" and the "xxxx". | |
547 | * - cannot execute it externally (since it would just do | |
548 | * the same thing over again) | |
549 | * | |
550 | * So we just directly call the internal command handler, and | |
551 | * die if that one cannot handle it. | |
552 | */ | |
cc44c765 | 553 | if (!prefixcmp(cmd, "git-")) { |
231af832 LT |
554 | cmd += 4; |
555 | argv[0] = cmd; | |
47d0b4ff | 556 | handle_internal_command(argc, argv); |
231af832 LT |
557 | die("cannot handle %s internally", cmd); |
558 | } | |
8e49d503 | 559 | |
231af832 | 560 | /* Look for flags.. */ |
6acbcb92 JS |
561 | argv++; |
562 | argc--; | |
4394efec | 563 | handle_options(&argv, &argc, NULL); |
6acbcb92 | 564 | if (argc > 0) { |
cc44c765 | 565 | if (!prefixcmp(argv[0], "--")) |
6acbcb92 JS |
566 | argv[0] += 2; |
567 | } else { | |
3d7e2d85 | 568 | /* The user didn't specify a command; give them help */ |
73e25e7c | 569 | commit_pager_choice(); |
3d7e2d85 SP |
570 | printf("usage: %s\n\n", git_usage_string); |
571 | list_common_cmds_help(); | |
b7d96819 | 572 | printf("\n%s\n", git_more_info_string); |
3d7e2d85 | 573 | exit(1); |
97fc6c5f | 574 | } |
6acbcb92 | 575 | cmd = argv[0]; |
231af832 LT |
576 | |
577 | /* | |
511707d4 | 578 | * We use PATH to find git commands, but we prepend some higher |
3ea3c215 | 579 | * precedence paths: the "--exec-path" option, the GIT_EXEC_PATH |
511707d4 SP |
580 | * environment, and the $(gitexecdir) from the Makefile at build |
581 | * time. | |
231af832 | 582 | */ |
e1464ca7 | 583 | setup_path(); |
8e49d503 | 584 | |
a025463b | 585 | while (1) { |
a907e1b6 AS |
586 | static int done_help = 0; |
587 | static int was_alias = 0; | |
588 | was_alias = run_argv(&argc, &argv); | |
589 | if (errno != ENOENT) | |
a025463b | 590 | break; |
a907e1b6 | 591 | if (was_alias) { |
f3dd015c | 592 | fprintf(stderr, "Expansion of alias '%s' failed; " |
7283bbc7 | 593 | "'%s' is not a git command\n", |
f3dd015c TT |
594 | cmd, argv[0]); |
595 | exit(1); | |
596 | } | |
a907e1b6 AS |
597 | if (!done_help) { |
598 | cmd = argv[0] = help_unknown_cmd(cmd); | |
599 | done_help = 1; | |
600 | } else | |
601 | break; | |
f3dd015c | 602 | } |
10b15b86 AR |
603 | |
604 | fprintf(stderr, "Failed to run command '%s': %s\n", | |
33ebb871 | 605 | cmd, strerror(errno)); |
8e49d503 AE |
606 | |
607 | return 1; | |
608 | } |