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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[] = |
62b4698e | 9 | "git [--version] [--exec-path[=<path>]] [--html-path]\n" |
b0fa7ab5 | 10 | " [-p|--paginate|--no-pager] [--no-replace-objects]\n" |
62b4698e | 11 | " [--bare] [--git-dir=<path>] [--work-tree=<path>]\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 JS |
68 | { |
69 | int handled = 0; | |
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); | |
6acbcb92 | 98 | } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) { |
4e10738a | 99 | use_pager = 1; |
463a849d | 100 | } else if (!strcmp(cmd, "--no-pager")) { |
4e10738a | 101 | use_pager = 0; |
463a849d MM |
102 | if (envchanged) |
103 | *envchanged = 1; | |
b0fa7ab5 CC |
104 | } else if (!strcmp(cmd, "--no-replace-objects")) { |
105 | read_replace_refs = 0; | |
6476b38b CC |
106 | setenv(NO_REPLACE_OBJECTS_ENVIRONMENT, "1", 1); |
107 | if (envchanged) | |
108 | *envchanged = 1; | |
6acbcb92 | 109 | } else if (!strcmp(cmd, "--git-dir")) { |
c321f00d BG |
110 | if (*argc < 2) { |
111 | fprintf(stderr, "No directory given for --git-dir.\n" ); | |
112 | usage(git_usage_string); | |
113 | } | |
45b09794 | 114 | setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1); |
4394efec ML |
115 | if (envchanged) |
116 | *envchanged = 1; | |
6acbcb92 JS |
117 | (*argv)++; |
118 | (*argc)--; | |
e4b02333 | 119 | handled++; |
cc44c765 | 120 | } else if (!prefixcmp(cmd, "--git-dir=")) { |
45b09794 | 121 | setenv(GIT_DIR_ENVIRONMENT, cmd + 10, 1); |
4394efec ML |
122 | if (envchanged) |
123 | *envchanged = 1; | |
892c41b9 ML |
124 | } else if (!strcmp(cmd, "--work-tree")) { |
125 | if (*argc < 2) { | |
126 | fprintf(stderr, "No directory given for --work-tree.\n" ); | |
127 | usage(git_usage_string); | |
128 | } | |
129 | setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1); | |
4394efec ML |
130 | if (envchanged) |
131 | *envchanged = 1; | |
892c41b9 ML |
132 | (*argv)++; |
133 | (*argc)--; | |
134 | } else if (!prefixcmp(cmd, "--work-tree=")) { | |
135 | setenv(GIT_WORK_TREE_ENVIRONMENT, cmd + 12, 1); | |
4394efec ML |
136 | if (envchanged) |
137 | *envchanged = 1; | |
6acbcb92 | 138 | } else if (!strcmp(cmd, "--bare")) { |
ef5ddb2f | 139 | static char git_dir[PATH_MAX+1]; |
6adcca3f | 140 | is_bare_repository_cfg = 1; |
9277d602 | 141 | setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 0); |
4394efec ML |
142 | if (envchanged) |
143 | *envchanged = 1; | |
8b1fa778 AR |
144 | } else if (!strcmp(cmd, "-c")) { |
145 | if (*argc < 2) { | |
146 | fprintf(stderr, "-c expects a configuration string\n" ); | |
147 | usage(git_usage_string); | |
148 | } | |
2b64fc89 | 149 | git_config_push_parameter((*argv)[1]); |
8b1fa778 AR |
150 | (*argv)++; |
151 | (*argc)--; | |
6acbcb92 JS |
152 | } else { |
153 | fprintf(stderr, "Unknown option: %s\n", cmd); | |
822a7d50 | 154 | usage(git_usage_string); |
6acbcb92 | 155 | } |
4ab243a9 JS |
156 | |
157 | (*argv)++; | |
158 | (*argc)--; | |
159 | handled++; | |
160 | } | |
161 | return handled; | |
162 | } | |
163 | ||
2b11e317 JS |
164 | static int handle_alias(int *argcp, const char ***argv) |
165 | { | |
af05d679 | 166 | int envchanged = 0, ret = 0, saved_errno = errno; |
2b11e317 | 167 | const char *subdir; |
0347a8c7 | 168 | int count, option_count; |
4b25d091 | 169 | const char **new_argv; |
94351118 JK |
170 | const char *alias_command; |
171 | char *alias_string; | |
e85dc0a3 | 172 | int unused_nongit; |
2b11e317 | 173 | |
e85dc0a3 | 174 | subdir = setup_git_directory_gently(&unused_nongit); |
0347a8c7 ML |
175 | |
176 | alias_command = (*argv)[0]; | |
94351118 | 177 | alias_string = alias_lookup(alias_command); |
0347a8c7 | 178 | if (alias_string) { |
dfd42a3c | 179 | if (alias_string[0] == '!') { |
7f51f8bc EFL |
180 | const char **alias_argv; |
181 | int argc = *argcp, i; | |
182 | ||
030149a4 | 183 | commit_pager_choice(); |
7f51f8bc EFL |
184 | |
185 | /* build alias_argv */ | |
186 | alias_argv = xmalloc(sizeof(*alias_argv) * (argc + 1)); | |
187 | alias_argv[0] = alias_string + 1; | |
188 | for (i = 1; i < argc; ++i) | |
189 | alias_argv[i] = (*argv)[i]; | |
190 | alias_argv[argc] = NULL; | |
191 | ||
192 | ret = run_command_v_opt(alias_argv, RUN_USING_SHELL); | |
193 | if (ret >= 0) /* normal exit */ | |
194 | exit(ret); | |
195 | ||
196 | die_errno("While expanding alias '%s': '%s'", | |
197 | alias_command, alias_string + 1); | |
dfd42a3c | 198 | } |
0347a8c7 | 199 | count = split_cmdline(alias_string, &new_argv); |
dc4179f9 | 200 | if (count < 0) |
ad9ac6db GB |
201 | die("Bad alias.%s string: %s", alias_command, |
202 | split_cmdline_strerror(count)); | |
4394efec ML |
203 | option_count = handle_options(&new_argv, &count, &envchanged); |
204 | if (envchanged) | |
205 | die("alias '%s' changes environment variables\n" | |
206 | "You can use '!git' in the alias to do this.", | |
207 | alias_command); | |
0347a8c7 ML |
208 | memmove(new_argv - option_count, new_argv, |
209 | count * sizeof(char *)); | |
210 | new_argv -= option_count; | |
211 | ||
212 | if (count < 1) | |
213 | die("empty alias for %s", alias_command); | |
214 | ||
215 | if (!strcmp(alias_command, new_argv[0])) | |
216 | die("recursive alias: %s", alias_command); | |
217 | ||
b319ce4c | 218 | trace_argv_printf(new_argv, |
6ce4e61f CC |
219 | "trace: alias expansion: %s =>", |
220 | alias_command); | |
575ba9d6 | 221 | |
4b25d091 | 222 | new_argv = xrealloc(new_argv, sizeof(char *) * |
6167c136 | 223 | (count + *argcp)); |
0347a8c7 | 224 | /* insert after command name */ |
4b25d091 | 225 | memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp); |
2b11e317 | 226 | |
0347a8c7 ML |
227 | *argv = new_argv; |
228 | *argcp += count - 1; | |
2b11e317 | 229 | |
0347a8c7 | 230 | ret = 1; |
2b11e317 JS |
231 | } |
232 | ||
7be77de2 | 233 | if (subdir && chdir(subdir)) |
d824cbba | 234 | die_errno("Cannot change to '%s'", subdir); |
2b11e317 | 235 | |
47e5c0ca JS |
236 | errno = saved_errno; |
237 | ||
2b11e317 JS |
238 | return ret; |
239 | } | |
240 | ||
70827b15 | 241 | const char git_version_string[] = GIT_VERSION; |
5b84f4d8 | 242 | |
ee38dfb8 NTND |
243 | #define RUN_SETUP (1<<0) |
244 | #define RUN_SETUP_GENTLY (1<<1) | |
245 | #define USE_PAGER (1<<2) | |
7eff28a9 SP |
246 | /* |
247 | * require working tree to be present -- anything uses this needs | |
248 | * RUN_SETUP for reading from the configuration file. | |
249 | */ | |
ee38dfb8 | 250 | #define NEED_WORK_TREE (1<<3) |
a633fca0 | 251 | |
47d0b4ff LT |
252 | struct cmd_struct { |
253 | const char *cmd; | |
254 | int (*fn)(int, const char **, const char *); | |
255 | int option; | |
256 | }; | |
257 | ||
f172f334 | 258 | static int run_builtin(struct cmd_struct *p, int argc, const char **argv) |
47d0b4ff | 259 | { |
99caeed0 | 260 | int status, help; |
0f157315 | 261 | struct stat st; |
47d0b4ff LT |
262 | const char *prefix; |
263 | ||
264 | prefix = NULL; | |
99caeed0 JN |
265 | help = argc == 2 && !strcmp(argv[1], "-h"); |
266 | if (!help) { | |
267 | if (p->option & RUN_SETUP) | |
268 | prefix = setup_git_directory(); | |
ee38dfb8 NTND |
269 | if (p->option & RUN_SETUP_GENTLY) { |
270 | int nongit_ok; | |
271 | prefix = setup_git_directory_gently(&nongit_ok); | |
272 | } | |
99caeed0 | 273 | |
ee38dfb8 | 274 | if (use_pager == -1 && p->option & (RUN_SETUP | RUN_SETUP_GENTLY)) |
99caeed0 JN |
275 | use_pager = check_pager_config(p->cmd); |
276 | if (use_pager == -1 && p->option & USE_PAGER) | |
277 | use_pager = 1; | |
a9ca8a85 NTND |
278 | |
279 | if ((p->option & (RUN_SETUP | RUN_SETUP_GENTLY)) && | |
280 | startup_info->have_repository) /* get_git_dir() may set up repo, avoid that */ | |
281 | trace_repo_setup(prefix); | |
99caeed0 | 282 | } |
4e10738a JK |
283 | commit_pager_choice(); |
284 | ||
99caeed0 | 285 | if (!help && p->option & NEED_WORK_TREE) |
59f0f2f3 MH |
286 | setup_work_tree(); |
287 | ||
b319ce4c | 288 | trace_argv_printf(argv, "trace: built-in: git"); |
47d0b4ff | 289 | |
0f157315 LT |
290 | status = p->fn(argc, argv, prefix); |
291 | if (status) | |
47e3de0e | 292 | return status; |
0f157315 LT |
293 | |
294 | /* Somebody closed stdout? */ | |
295 | if (fstat(fileno(stdout), &st)) | |
296 | return 0; | |
297 | /* Ignore write errors for pipes and sockets.. */ | |
298 | if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) | |
299 | return 0; | |
300 | ||
301 | /* Check for ENOSPC and EIO errors.. */ | |
0227f988 | 302 | if (fflush(stdout)) |
d824cbba | 303 | die_errno("write failure on standard output"); |
0227f988 LT |
304 | if (ferror(stdout)) |
305 | die("unknown write failure on standard output"); | |
306 | if (fclose(stdout)) | |
d824cbba | 307 | die_errno("close failed on standard output"); |
0f157315 | 308 | return 0; |
47d0b4ff LT |
309 | } |
310 | ||
311 | static void handle_internal_command(int argc, const char **argv) | |
231af832 LT |
312 | { |
313 | const char *cmd = argv[0]; | |
47d0b4ff | 314 | static struct cmd_struct commands[] = { |
7ae3df8c | 315 | { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE }, |
d97bc5de | 316 | { "annotate", cmd_annotate, RUN_SETUP }, |
d1ea8962 | 317 | { "apply", cmd_apply, RUN_SETUP_GENTLY }, |
265d5280 | 318 | { "archive", cmd_archive }, |
1bf072e3 | 319 | { "bisect--helper", cmd_bisect__helper, RUN_SETUP | NEED_WORK_TREE }, |
4f0219a4 | 320 | { "blame", cmd_blame, RUN_SETUP }, |
1da1b3a3 | 321 | { "branch", cmd_branch, RUN_SETUP }, |
2cb60093 | 322 | { "bundle", cmd_bundle, RUN_SETUP_GENTLY }, |
efffea03 | 323 | { "cat-file", cmd_cat_file, RUN_SETUP }, |
ef5dd8a9 NTND |
324 | { "check-attr", cmd_check_attr, RUN_SETUP }, |
325 | { "check-ref-format", cmd_check_ref_format }, | |
782c2d65 | 326 | { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE }, |
4465f410 JS |
327 | { "checkout-index", cmd_checkout_index, |
328 | RUN_SETUP | NEED_WORK_TREE}, | |
e827633a | 329 | { "cherry", cmd_cherry, RUN_SETUP }, |
7ae3df8c | 330 | { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE }, |
113f10f2 | 331 | { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE }, |
ef5dd8a9 | 332 | { "clone", cmd_clone }, |
f5bbc322 | 333 | { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE }, |
efffea03 | 334 | { "commit-tree", cmd_commit_tree, RUN_SETUP }, |
3ba7e6e2 | 335 | { "config", cmd_config, RUN_SETUP_GENTLY }, |
8112894d | 336 | { "count-objects", cmd_count_objects, RUN_SETUP }, |
9a0eaf83 | 337 | { "describe", cmd_describe, RUN_SETUP }, |
89d07f75 | 338 | { "diff", cmd_diff }, |
4f38f6b5 | 339 | { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE }, |
efffea03 | 340 | { "diff-index", cmd_diff_index, RUN_SETUP }, |
efffea03 | 341 | { "diff-tree", cmd_diff_tree, RUN_SETUP }, |
f2dc849e | 342 | { "fast-export", cmd_fast_export, RUN_SETUP }, |
b888d61c | 343 | { "fetch", cmd_fetch, RUN_SETUP }, |
2d4177c0 | 344 | { "fetch-pack", cmd_fetch_pack, RUN_SETUP }, |
efffea03 | 345 | { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP }, |
9f613ddd | 346 | { "for-each-ref", cmd_for_each_ref, RUN_SETUP }, |
efffea03 | 347 | { "format-patch", cmd_format_patch, RUN_SETUP }, |
b4dfefe0 MW |
348 | { "fsck", cmd_fsck, RUN_SETUP }, |
349 | { "fsck-objects", cmd_fsck, RUN_SETUP }, | |
6757ada4 | 350 | { "gc", cmd_gc, RUN_SETUP }, |
f754fa9c | 351 | { "get-tar-commit-id", cmd_get_tar_commit_id }, |
ff38d1a9 | 352 | { "grep", cmd_grep, RUN_SETUP_GENTLY }, |
b28a1ce0 | 353 | { "hash-object", cmd_hash_object }, |
f754fa9c | 354 | { "help", cmd_help }, |
e0fce074 | 355 | { "index-pack", cmd_index_pack, RUN_SETUP_GENTLY }, |
515377ea | 356 | { "init", cmd_init_db }, |
f754fa9c | 357 | { "init-db", cmd_init_db }, |
1fda91b5 | 358 | { "log", cmd_log, RUN_SETUP }, |
efffea03 | 359 | { "ls-files", cmd_ls_files, RUN_SETUP }, |
f0ef6a6e | 360 | { "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY }, |
ef5dd8a9 | 361 | { "ls-tree", cmd_ls_tree, RUN_SETUP }, |
f754fa9c JH |
362 | { "mailinfo", cmd_mailinfo }, |
363 | { "mailsplit", cmd_mailsplit }, | |
1c7b76be | 364 | { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE }, |
71dfbf22 | 365 | { "merge-base", cmd_merge_base, RUN_SETUP }, |
3668d423 | 366 | { "merge-file", cmd_merge_file, RUN_SETUP_GENTLY }, |
0ecace72 | 367 | { "merge-index", cmd_merge_index, RUN_SETUP }, |
a00a42ae | 368 | { "merge-ours", cmd_merge_ours, RUN_SETUP }, |
e1b3a2ca | 369 | { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
8cc5b290 AP |
370 | { "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
371 | { "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, | |
1736855c | 372 | { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
907a7cb5 | 373 | { "merge-tree", cmd_merge_tree, RUN_SETUP }, |
112dd514 | 374 | { "mktag", cmd_mktag, RUN_SETUP }, |
633e3556 | 375 | { "mktree", cmd_mktree, RUN_SETUP }, |
7ae3df8c | 376 | { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE }, |
efffea03 | 377 | { "name-rev", cmd_name_rev, RUN_SETUP }, |
cd067d3b | 378 | { "notes", cmd_notes, RUN_SETUP }, |
efffea03 | 379 | { "pack-objects", cmd_pack_objects, RUN_SETUP }, |
377d0276 | 380 | { "pack-redundant", cmd_pack_redundant, RUN_SETUP }, |
ef5dd8a9 | 381 | { "pack-refs", cmd_pack_refs, RUN_SETUP }, |
dedc0ec5 | 382 | { "patch-id", cmd_patch_id }, |
f0ef6a6e | 383 | { "peek-remote", cmd_ls_remote, RUN_SETUP_GENTLY }, |
d97bc5de | 384 | { "pickaxe", cmd_blame, RUN_SETUP }, |
efffea03 JH |
385 | { "prune", cmd_prune, RUN_SETUP }, |
386 | { "prune-packed", cmd_prune_packed, RUN_SETUP }, | |
102cb085 | 387 | { "push", cmd_push, RUN_SETUP }, |
efffea03 | 388 | { "read-tree", cmd_read_tree, RUN_SETUP }, |
be5908ae | 389 | { "receive-pack", cmd_receive_pack }, |
4264dc15 | 390 | { "reflog", cmd_reflog, RUN_SETUP }, |
211c8968 | 391 | { "remote", cmd_remote, RUN_SETUP }, |
7f3ecebf | 392 | { "remote-ext", cmd_remote_ext }, |
3a9ed4bd | 393 | { "remote-fd", cmd_remote_fd }, |
54b0c1e0 | 394 | { "replace", cmd_replace, RUN_SETUP }, |
6390c905 | 395 | { "repo-config", cmd_repo_config, RUN_SETUP_GENTLY }, |
658f3650 | 396 | { "rerere", cmd_rerere, RUN_SETUP }, |
0e5a7faa | 397 | { "reset", cmd_reset, RUN_SETUP }, |
efffea03 | 398 | { "rev-list", cmd_rev_list, RUN_SETUP }, |
5410a02a | 399 | { "rev-parse", cmd_rev_parse }, |
7ae3df8c | 400 | { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE }, |
271bb087 | 401 | { "rm", cmd_rm, RUN_SETUP }, |
96249c04 | 402 | { "send-pack", cmd_send_pack, RUN_SETUP }, |
773b69bf | 403 | { "shortlog", cmd_shortlog, RUN_SETUP_GENTLY | USE_PAGER }, |
1fda91b5 | 404 | { "show", cmd_show, RUN_SETUP }, |
ef5dd8a9 NTND |
405 | { "show-branch", cmd_show_branch, RUN_SETUP }, |
406 | { "show-ref", cmd_show_ref, RUN_SETUP }, | |
407 | { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE }, | |
10762323 | 408 | { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE }, |
f754fa9c | 409 | { "stripspace", cmd_stripspace }, |
efffea03 | 410 | { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP }, |
62e09ce9 | 411 | { "tag", cmd_tag, RUN_SETUP }, |
9cb90b80 | 412 | { "tar-tree", cmd_tar_tree }, |
b5325818 | 413 | { "unpack-file", cmd_unpack_file, RUN_SETUP }, |
efffea03 JH |
414 | { "unpack-objects", cmd_unpack_objects, RUN_SETUP }, |
415 | { "update-index", cmd_update_index, RUN_SETUP }, | |
416 | { "update-ref", cmd_update_ref, RUN_SETUP }, | |
53a1116c | 417 | { "update-server-info", cmd_update_server_info, RUN_SETUP }, |
39345a21 | 418 | { "upload-archive", cmd_upload_archive }, |
2bc8c1a8 | 419 | { "var", cmd_var, RUN_SETUP_GENTLY }, |
ef5dd8a9 | 420 | { "verify-pack", cmd_verify_pack }, |
2ae68fcb | 421 | { "verify-tag", cmd_verify_tag, RUN_SETUP }, |
f754fa9c | 422 | { "version", cmd_version }, |
1fda91b5 | 423 | { "whatchanged", cmd_whatchanged, RUN_SETUP }, |
efffea03 | 424 | { "write-tree", cmd_write_tree, RUN_SETUP }, |
231af832 LT |
425 | }; |
426 | int i; | |
23326d14 JS |
427 | static const char ext[] = STRIP_EXTENSION; |
428 | ||
429 | if (sizeof(ext) > 1) { | |
430 | i = strlen(argv[0]) - strlen(ext); | |
431 | if (i > 0 && !strcmp(argv[0] + i, ext)) { | |
e8eec71d | 432 | char *argv0 = xstrdup(argv[0]); |
23326d14 JS |
433 | argv[0] = cmd = argv0; |
434 | argv0[i] = '\0'; | |
435 | } | |
436 | } | |
231af832 | 437 | |
1cd95087 LT |
438 | /* Turn "git cmd --help" into "git help cmd" */ |
439 | if (argc > 1 && !strcmp(argv[1], "--help")) { | |
440 | argv[1] = argv[0]; | |
441 | argv[0] = cmd = "help"; | |
442 | } | |
443 | ||
231af832 LT |
444 | for (i = 0; i < ARRAY_SIZE(commands); i++) { |
445 | struct cmd_struct *p = commands+i; | |
446 | if (strcmp(p->cmd, cmd)) | |
447 | continue; | |
f172f334 | 448 | exit(run_builtin(p, argc, argv)); |
231af832 LT |
449 | } |
450 | } | |
451 | ||
7550be0a JH |
452 | static void execv_dashed_external(const char **argv) |
453 | { | |
f285a2d7 | 454 | struct strbuf cmd = STRBUF_INIT; |
7550be0a | 455 | const char *tmp; |
d8e96fd8 | 456 | int status; |
7550be0a | 457 | |
030149a4 JN |
458 | commit_pager_choice(); |
459 | ||
7550be0a JH |
460 | strbuf_addf(&cmd, "git-%s", argv[0]); |
461 | ||
462 | /* | |
463 | * argv[0] must be the git command, but the argv array | |
464 | * belongs to the caller, and may be reused in | |
465 | * subsequent loop iterations. Save argv[0] and | |
466 | * restore it on error. | |
467 | */ | |
468 | tmp = argv[0]; | |
469 | argv[0] = cmd.buf; | |
470 | ||
471 | trace_argv_printf(argv, "trace: exec:"); | |
472 | ||
d8e96fd8 JK |
473 | /* |
474 | * if we fail because the command is not found, it is | |
475 | * OK to return. Otherwise, we just pass along the status code. | |
476 | */ | |
c024beb5 | 477 | status = run_command_v_opt(argv, RUN_SILENT_EXEC_FAILURE); |
0ac77ec3 | 478 | if (status >= 0 || errno != ENOENT) |
5709e036 | 479 | exit(status); |
7550be0a JH |
480 | |
481 | argv[0] = tmp; | |
482 | ||
483 | strbuf_release(&cmd); | |
484 | } | |
485 | ||
a907e1b6 AS |
486 | static int run_argv(int *argcp, const char ***argv) |
487 | { | |
488 | int done_alias = 0; | |
489 | ||
490 | while (1) { | |
491 | /* See if it's an internal command */ | |
492 | handle_internal_command(*argcp, *argv); | |
493 | ||
494 | /* .. then try the external ones */ | |
495 | execv_dashed_external(*argv); | |
496 | ||
497 | /* It could be an alias -- this works around the insanity | |
498 | * of overriding "git log" with "git show" by having | |
499 | * alias.log = show | |
500 | */ | |
501 | if (done_alias || !handle_alias(argcp, argv)) | |
502 | break; | |
503 | done_alias = 1; | |
504 | } | |
505 | ||
506 | return done_alias; | |
507 | } | |
508 | ||
7550be0a | 509 | |
47d0b4ff | 510 | int main(int argc, const char **argv) |
8e49d503 | 511 | { |
4dd47c3b | 512 | const char *cmd; |
231af832 | 513 | |
e37c1329 NTND |
514 | startup_info = &git_startup_info; |
515 | ||
2cd72b0b SP |
516 | cmd = git_extract_argv0_path(argv[0]); |
517 | if (!cmd) | |
4dd47c3b | 518 | cmd = "git-help"; |
8e49d503 | 519 | |
231af832 LT |
520 | /* |
521 | * "git-xxxx" is the same as "git xxxx", but we obviously: | |
522 | * | |
523 | * - cannot take flags in between the "git" and the "xxxx". | |
524 | * - cannot execute it externally (since it would just do | |
525 | * the same thing over again) | |
526 | * | |
527 | * So we just directly call the internal command handler, and | |
528 | * die if that one cannot handle it. | |
529 | */ | |
cc44c765 | 530 | if (!prefixcmp(cmd, "git-")) { |
231af832 LT |
531 | cmd += 4; |
532 | argv[0] = cmd; | |
47d0b4ff | 533 | handle_internal_command(argc, argv); |
231af832 LT |
534 | die("cannot handle %s internally", cmd); |
535 | } | |
8e49d503 | 536 | |
231af832 | 537 | /* Look for flags.. */ |
6acbcb92 JS |
538 | argv++; |
539 | argc--; | |
4394efec | 540 | handle_options(&argv, &argc, NULL); |
6acbcb92 | 541 | if (argc > 0) { |
cc44c765 | 542 | if (!prefixcmp(argv[0], "--")) |
6acbcb92 JS |
543 | argv[0] += 2; |
544 | } else { | |
3d7e2d85 | 545 | /* The user didn't specify a command; give them help */ |
73e25e7c | 546 | commit_pager_choice(); |
3d7e2d85 SP |
547 | printf("usage: %s\n\n", git_usage_string); |
548 | list_common_cmds_help(); | |
b7d96819 | 549 | printf("\n%s\n", git_more_info_string); |
3d7e2d85 | 550 | exit(1); |
97fc6c5f | 551 | } |
6acbcb92 | 552 | cmd = argv[0]; |
231af832 LT |
553 | |
554 | /* | |
511707d4 | 555 | * We use PATH to find git commands, but we prepend some higher |
3ea3c215 | 556 | * precedence paths: the "--exec-path" option, the GIT_EXEC_PATH |
511707d4 SP |
557 | * environment, and the $(gitexecdir) from the Makefile at build |
558 | * time. | |
231af832 | 559 | */ |
e1464ca7 | 560 | setup_path(); |
8e49d503 | 561 | |
a025463b | 562 | while (1) { |
a907e1b6 AS |
563 | static int done_help = 0; |
564 | static int was_alias = 0; | |
565 | was_alias = run_argv(&argc, &argv); | |
566 | if (errno != ENOENT) | |
a025463b | 567 | break; |
a907e1b6 | 568 | if (was_alias) { |
f3dd015c | 569 | fprintf(stderr, "Expansion of alias '%s' failed; " |
7283bbc7 | 570 | "'%s' is not a git command\n", |
f3dd015c TT |
571 | cmd, argv[0]); |
572 | exit(1); | |
573 | } | |
a907e1b6 AS |
574 | if (!done_help) { |
575 | cmd = argv[0] = help_unknown_cmd(cmd); | |
576 | done_help = 1; | |
577 | } else | |
578 | break; | |
f3dd015c | 579 | } |
10b15b86 AR |
580 | |
581 | fprintf(stderr, "Failed to run command '%s': %s\n", | |
33ebb871 | 582 | cmd, strerror(errno)); |
8e49d503 AE |
583 | |
584 | return 1; | |
585 | } |