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Commit | Line | Data |
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85023577 | 1 | #include "builtin.h" |
fd5c363d TF |
2 | #include "exec_cmd.h" |
3 | #include "help.h" | |
d8e96fd8 | 4 | #include "run-command.h" |
8e49d503 | 5 | |
822a7d50 | 6 | const char git_usage_string[] = |
44e1e4d6 | 7 | "git [--version] [--help] [-C <path>] [-c name=value]\n" |
03a0fb0c | 8 | " [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]\n" |
9c9b4f2f | 9 | " [-p | --paginate | --no-pager] [--no-replace-objects] [--bare]\n" |
a1bea2c1 | 10 | " [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]\n" |
62b4698e | 11 | " <command> [<args>]"; |
822a7d50 | 12 | |
b7d96819 | 13 | const char git_more_info_string[] = |
ad5fe377 | 14 | N_("'git help -a' and 'git help -g' list available subcommands and some\n" |
73903d0b PO |
15 | "concept guides. See 'git help <command>' or 'git help <concept>'\n" |
16 | "to read about a specific subcommand or concept."); | |
b7d96819 | 17 | |
4e10738a | 18 | static int use_pager = -1; |
f655651e | 19 | static char *orig_cwd; |
c0562611 NTND |
20 | static const char *env_names[] = { |
21 | GIT_DIR_ENVIRONMENT, | |
22 | GIT_WORK_TREE_ENVIRONMENT, | |
23 | GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, | |
24 | GIT_PREFIX_ENVIRONMENT | |
25 | }; | |
26 | static char *orig_env[4]; | |
2e1175d4 | 27 | static int save_restore_env_balance; |
c0562611 | 28 | |
0d5466d2 | 29 | static void save_env_before_alias(void) |
c0562611 NTND |
30 | { |
31 | int i; | |
2e1175d4 JH |
32 | |
33 | assert(save_restore_env_balance == 0); | |
34 | save_restore_env_balance = 1; | |
f655651e | 35 | orig_cwd = xgetcwd(); |
c0562611 NTND |
36 | for (i = 0; i < ARRAY_SIZE(env_names); i++) { |
37 | orig_env[i] = getenv(env_names[i]); | |
38 | if (orig_env[i]) | |
39 | orig_env[i] = xstrdup(orig_env[i]); | |
40 | } | |
41 | } | |
42 | ||
57ea7123 | 43 | static void restore_env(int external_alias) |
c0562611 NTND |
44 | { |
45 | int i; | |
2e1175d4 JH |
46 | |
47 | assert(save_restore_env_balance == 1); | |
48 | save_restore_env_balance = 0; | |
57ea7123 | 49 | if (!external_alias && orig_cwd && chdir(orig_cwd)) |
c0562611 | 50 | die_errno("could not move to %s", orig_cwd); |
f655651e | 51 | free(orig_cwd); |
c0562611 | 52 | for (i = 0; i < ARRAY_SIZE(env_names); i++) { |
57ea7123 NTND |
53 | if (external_alias && |
54 | !strcmp(env_names[i], GIT_PREFIX_ENVIRONMENT)) | |
55 | continue; | |
8384c139 | 56 | if (orig_env[i]) { |
c0562611 | 57 | setenv(env_names[i], orig_env[i], 1); |
8384c139 JH |
58 | free(orig_env[i]); |
59 | } else { | |
c0562611 | 60 | unsetenv(env_names[i]); |
8384c139 | 61 | } |
c0562611 NTND |
62 | } |
63 | } | |
4e10738a JK |
64 | |
65 | static void commit_pager_choice(void) { | |
66 | switch (use_pager) { | |
67 | case 0: | |
68 | setenv("GIT_PAGER", "cat", 1); | |
69 | break; | |
70 | case 1: | |
71 | setup_pager(); | |
72 | break; | |
73 | default: | |
74 | break; | |
75 | } | |
76 | } | |
77 | ||
4b25d091 | 78 | static int handle_options(const char ***argv, int *argc, int *envchanged) |
4ab243a9 | 79 | { |
73546c08 | 80 | const char **orig_argv = *argv; |
4ab243a9 JS |
81 | |
82 | while (*argc > 0) { | |
83 | const char *cmd = (*argv)[0]; | |
84 | if (cmd[0] != '-') | |
85 | break; | |
86 | ||
6acbcb92 JS |
87 | /* |
88 | * For legacy reasons, the "version" and "help" | |
89 | * commands can be written with "--" prepended | |
90 | * to make them look like flags. | |
91 | */ | |
92 | if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version")) | |
93 | break; | |
94 | ||
95 | /* | |
96 | * Check remaining flags. | |
97 | */ | |
ae021d87 | 98 | if (skip_prefix(cmd, "--exec-path", &cmd)) { |
6acbcb92 | 99 | if (*cmd == '=') |
384df833 | 100 | git_set_argv_exec_path(cmd + 1); |
6acbcb92 JS |
101 | else { |
102 | puts(git_exec_path()); | |
103 | exit(0); | |
104 | } | |
89a56bfb MH |
105 | } else if (!strcmp(cmd, "--html-path")) { |
106 | puts(system_path(GIT_HTML_PATH)); | |
107 | exit(0); | |
f2dd8c37 JS |
108 | } else if (!strcmp(cmd, "--man-path")) { |
109 | puts(system_path(GIT_MAN_PATH)); | |
110 | exit(0); | |
111 | } else if (!strcmp(cmd, "--info-path")) { | |
112 | puts(system_path(GIT_INFO_PATH)); | |
113 | exit(0); | |
6acbcb92 | 114 | } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) { |
4e10738a | 115 | use_pager = 1; |
463a849d | 116 | } else if (!strcmp(cmd, "--no-pager")) { |
4e10738a | 117 | use_pager = 0; |
463a849d MM |
118 | if (envchanged) |
119 | *envchanged = 1; | |
b0fa7ab5 | 120 | } else if (!strcmp(cmd, "--no-replace-objects")) { |
afc711b8 | 121 | check_replace_refs = 0; |
6476b38b CC |
122 | setenv(NO_REPLACE_OBJECTS_ENVIRONMENT, "1", 1); |
123 | if (envchanged) | |
124 | *envchanged = 1; | |
6acbcb92 | 125 | } else if (!strcmp(cmd, "--git-dir")) { |
c321f00d BG |
126 | if (*argc < 2) { |
127 | fprintf(stderr, "No directory given for --git-dir.\n" ); | |
128 | usage(git_usage_string); | |
129 | } | |
45b09794 | 130 | setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1); |
4394efec ML |
131 | if (envchanged) |
132 | *envchanged = 1; | |
6acbcb92 JS |
133 | (*argv)++; |
134 | (*argc)--; | |
ae021d87 JK |
135 | } else if (skip_prefix(cmd, "--git-dir=", &cmd)) { |
136 | setenv(GIT_DIR_ENVIRONMENT, cmd, 1); | |
4394efec ML |
137 | if (envchanged) |
138 | *envchanged = 1; | |
a1bea2c1 JT |
139 | } else if (!strcmp(cmd, "--namespace")) { |
140 | if (*argc < 2) { | |
141 | fprintf(stderr, "No namespace given for --namespace.\n" ); | |
142 | usage(git_usage_string); | |
143 | } | |
144 | setenv(GIT_NAMESPACE_ENVIRONMENT, (*argv)[1], 1); | |
145 | if (envchanged) | |
146 | *envchanged = 1; | |
147 | (*argv)++; | |
148 | (*argc)--; | |
ae021d87 JK |
149 | } else if (skip_prefix(cmd, "--namespace=", &cmd)) { |
150 | setenv(GIT_NAMESPACE_ENVIRONMENT, cmd, 1); | |
a1bea2c1 JT |
151 | if (envchanged) |
152 | *envchanged = 1; | |
892c41b9 ML |
153 | } else if (!strcmp(cmd, "--work-tree")) { |
154 | if (*argc < 2) { | |
155 | fprintf(stderr, "No directory given for --work-tree.\n" ); | |
156 | usage(git_usage_string); | |
157 | } | |
158 | setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1); | |
4394efec ML |
159 | if (envchanged) |
160 | *envchanged = 1; | |
892c41b9 ML |
161 | (*argv)++; |
162 | (*argc)--; | |
ae021d87 JK |
163 | } else if (skip_prefix(cmd, "--work-tree=", &cmd)) { |
164 | setenv(GIT_WORK_TREE_ENVIRONMENT, cmd, 1); | |
4394efec ML |
165 | if (envchanged) |
166 | *envchanged = 1; | |
6acbcb92 | 167 | } else if (!strcmp(cmd, "--bare")) { |
4d3ab44d | 168 | char *cwd = xgetcwd(); |
6adcca3f | 169 | is_bare_repository_cfg = 1; |
4d3ab44d RS |
170 | setenv(GIT_DIR_ENVIRONMENT, cwd, 0); |
171 | free(cwd); | |
2cd83d10 | 172 | setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, "0", 1); |
4394efec ML |
173 | if (envchanged) |
174 | *envchanged = 1; | |
8b1fa778 AR |
175 | } else if (!strcmp(cmd, "-c")) { |
176 | if (*argc < 2) { | |
177 | fprintf(stderr, "-c expects a configuration string\n" ); | |
178 | usage(git_usage_string); | |
179 | } | |
2b64fc89 | 180 | git_config_push_parameter((*argv)[1]); |
8b1fa778 AR |
181 | (*argv)++; |
182 | (*argc)--; | |
823ab40f JK |
183 | } else if (!strcmp(cmd, "--literal-pathspecs")) { |
184 | setenv(GIT_LITERAL_PATHSPECS_ENVIRONMENT, "1", 1); | |
185 | if (envchanged) | |
186 | *envchanged = 1; | |
187 | } else if (!strcmp(cmd, "--no-literal-pathspecs")) { | |
188 | setenv(GIT_LITERAL_PATHSPECS_ENVIRONMENT, "0", 1); | |
189 | if (envchanged) | |
190 | *envchanged = 1; | |
bd30c2e4 NTND |
191 | } else if (!strcmp(cmd, "--glob-pathspecs")) { |
192 | setenv(GIT_GLOB_PATHSPECS_ENVIRONMENT, "1", 1); | |
193 | if (envchanged) | |
194 | *envchanged = 1; | |
195 | } else if (!strcmp(cmd, "--noglob-pathspecs")) { | |
196 | setenv(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, "1", 1); | |
197 | if (envchanged) | |
198 | *envchanged = 1; | |
93d93537 NTND |
199 | } else if (!strcmp(cmd, "--icase-pathspecs")) { |
200 | setenv(GIT_ICASE_PATHSPECS_ENVIRONMENT, "1", 1); | |
201 | if (envchanged) | |
202 | *envchanged = 1; | |
6035d6aa NTND |
203 | } else if (!strcmp(cmd, "--shallow-file")) { |
204 | (*argv)++; | |
205 | (*argc)--; | |
069c0532 | 206 | set_alternate_shallow_file((*argv)[0], 1); |
6035d6aa NTND |
207 | if (envchanged) |
208 | *envchanged = 1; | |
44e1e4d6 NR |
209 | } else if (!strcmp(cmd, "-C")) { |
210 | if (*argc < 2) { | |
211 | fprintf(stderr, "No directory given for -C.\n" ); | |
212 | usage(git_usage_string); | |
213 | } | |
6a536e20 KN |
214 | if ((*argv)[1][0]) { |
215 | if (chdir((*argv)[1])) | |
216 | die_errno("Cannot change to '%s'", (*argv)[1]); | |
217 | if (envchanged) | |
218 | *envchanged = 1; | |
219 | } | |
44e1e4d6 NR |
220 | (*argv)++; |
221 | (*argc)--; | |
6acbcb92 JS |
222 | } else { |
223 | fprintf(stderr, "Unknown option: %s\n", cmd); | |
822a7d50 | 224 | usage(git_usage_string); |
6acbcb92 | 225 | } |
4ab243a9 JS |
226 | |
227 | (*argv)++; | |
228 | (*argc)--; | |
4ab243a9 | 229 | } |
73546c08 | 230 | return (*argv) - orig_argv; |
4ab243a9 JS |
231 | } |
232 | ||
2b11e317 JS |
233 | static int handle_alias(int *argcp, const char ***argv) |
234 | { | |
af05d679 | 235 | int envchanged = 0, ret = 0, saved_errno = errno; |
0347a8c7 | 236 | int count, option_count; |
4b25d091 | 237 | const char **new_argv; |
94351118 JK |
238 | const char *alias_command; |
239 | char *alias_string; | |
e85dc0a3 | 240 | int unused_nongit; |
2b11e317 | 241 | |
0d5466d2 | 242 | save_env_before_alias(); |
86d26f24 | 243 | setup_git_directory_gently(&unused_nongit); |
0347a8c7 ML |
244 | |
245 | alias_command = (*argv)[0]; | |
94351118 | 246 | alias_string = alias_lookup(alias_command); |
0347a8c7 | 247 | if (alias_string) { |
dfd42a3c | 248 | if (alias_string[0] == '!') { |
850d2fec | 249 | struct child_process child = CHILD_PROCESS_INIT; |
7f51f8bc | 250 | |
030149a4 | 251 | commit_pager_choice(); |
57ea7123 | 252 | restore_env(1); |
7f51f8bc | 253 | |
850d2fec JK |
254 | child.use_shell = 1; |
255 | argv_array_push(&child.args, alias_string + 1); | |
256 | argv_array_pushv(&child.args, (*argv) + 1); | |
7f51f8bc | 257 | |
850d2fec | 258 | ret = run_command(&child); |
7f51f8bc EFL |
259 | if (ret >= 0) /* normal exit */ |
260 | exit(ret); | |
261 | ||
262 | die_errno("While expanding alias '%s': '%s'", | |
263 | alias_command, alias_string + 1); | |
dfd42a3c | 264 | } |
0347a8c7 | 265 | count = split_cmdline(alias_string, &new_argv); |
dc4179f9 | 266 | if (count < 0) |
ad9ac6db GB |
267 | die("Bad alias.%s string: %s", alias_command, |
268 | split_cmdline_strerror(count)); | |
4394efec ML |
269 | option_count = handle_options(&new_argv, &count, &envchanged); |
270 | if (envchanged) | |
271 | die("alias '%s' changes environment variables\n" | |
272 | "You can use '!git' in the alias to do this.", | |
273 | alias_command); | |
0347a8c7 ML |
274 | memmove(new_argv - option_count, new_argv, |
275 | count * sizeof(char *)); | |
276 | new_argv -= option_count; | |
277 | ||
278 | if (count < 1) | |
279 | die("empty alias for %s", alias_command); | |
280 | ||
281 | if (!strcmp(alias_command, new_argv[0])) | |
282 | die("recursive alias: %s", alias_command); | |
283 | ||
b319ce4c | 284 | trace_argv_printf(new_argv, |
6ce4e61f CC |
285 | "trace: alias expansion: %s =>", |
286 | alias_command); | |
575ba9d6 | 287 | |
2756ca43 | 288 | REALLOC_ARRAY(new_argv, count + *argcp); |
0347a8c7 | 289 | /* insert after command name */ |
4b25d091 | 290 | memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp); |
2b11e317 | 291 | |
0347a8c7 ML |
292 | *argv = new_argv; |
293 | *argcp += count - 1; | |
2b11e317 | 294 | |
0347a8c7 | 295 | ret = 1; |
2b11e317 JS |
296 | } |
297 | ||
57ea7123 | 298 | restore_env(0); |
2b11e317 | 299 | |
47e5c0ca JS |
300 | errno = saved_errno; |
301 | ||
2b11e317 JS |
302 | return ret; |
303 | } | |
304 | ||
ee38dfb8 NTND |
305 | #define RUN_SETUP (1<<0) |
306 | #define RUN_SETUP_GENTLY (1<<1) | |
307 | #define USE_PAGER (1<<2) | |
7eff28a9 SP |
308 | /* |
309 | * require working tree to be present -- anything uses this needs | |
310 | * RUN_SETUP for reading from the configuration file. | |
311 | */ | |
ee38dfb8 | 312 | #define NEED_WORK_TREE (1<<3) |
a633fca0 | 313 | |
47d0b4ff LT |
314 | struct cmd_struct { |
315 | const char *cmd; | |
316 | int (*fn)(int, const char **, const char *); | |
317 | int option; | |
318 | }; | |
319 | ||
f172f334 | 320 | static int run_builtin(struct cmd_struct *p, int argc, const char **argv) |
47d0b4ff | 321 | { |
99caeed0 | 322 | int status, help; |
0f157315 | 323 | struct stat st; |
47d0b4ff LT |
324 | const char *prefix; |
325 | ||
326 | prefix = NULL; | |
99caeed0 JN |
327 | help = argc == 2 && !strcmp(argv[1], "-h"); |
328 | if (!help) { | |
329 | if (p->option & RUN_SETUP) | |
330 | prefix = setup_git_directory(); | |
27bd38d4 | 331 | else if (p->option & RUN_SETUP_GENTLY) { |
ee38dfb8 NTND |
332 | int nongit_ok; |
333 | prefix = setup_git_directory_gently(&nongit_ok); | |
334 | } | |
99caeed0 | 335 | |
ee38dfb8 | 336 | if (use_pager == -1 && p->option & (RUN_SETUP | RUN_SETUP_GENTLY)) |
99caeed0 JN |
337 | use_pager = check_pager_config(p->cmd); |
338 | if (use_pager == -1 && p->option & USE_PAGER) | |
339 | use_pager = 1; | |
a9ca8a85 NTND |
340 | |
341 | if ((p->option & (RUN_SETUP | RUN_SETUP_GENTLY)) && | |
342 | startup_info->have_repository) /* get_git_dir() may set up repo, avoid that */ | |
343 | trace_repo_setup(prefix); | |
99caeed0 | 344 | } |
4e10738a JK |
345 | commit_pager_choice(); |
346 | ||
99caeed0 | 347 | if (!help && p->option & NEED_WORK_TREE) |
59f0f2f3 MH |
348 | setup_work_tree(); |
349 | ||
b319ce4c | 350 | trace_argv_printf(argv, "trace: built-in: git"); |
47d0b4ff | 351 | |
0f157315 LT |
352 | status = p->fn(argc, argv, prefix); |
353 | if (status) | |
47e3de0e | 354 | return status; |
0f157315 LT |
355 | |
356 | /* Somebody closed stdout? */ | |
357 | if (fstat(fileno(stdout), &st)) | |
358 | return 0; | |
359 | /* Ignore write errors for pipes and sockets.. */ | |
360 | if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) | |
361 | return 0; | |
362 | ||
363 | /* Check for ENOSPC and EIO errors.. */ | |
0227f988 | 364 | if (fflush(stdout)) |
d824cbba | 365 | die_errno("write failure on standard output"); |
0227f988 LT |
366 | if (ferror(stdout)) |
367 | die("unknown write failure on standard output"); | |
368 | if (fclose(stdout)) | |
d824cbba | 369 | die_errno("close failed on standard output"); |
0f157315 | 370 | return 0; |
47d0b4ff LT |
371 | } |
372 | ||
c6127fa3 SS |
373 | static struct cmd_struct commands[] = { |
374 | { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE }, | |
783d7e86 | 375 | { "am", cmd_am, RUN_SETUP | NEED_WORK_TREE }, |
c6127fa3 SS |
376 | { "annotate", cmd_annotate, RUN_SETUP }, |
377 | { "apply", cmd_apply, RUN_SETUP_GENTLY }, | |
378 | { "archive", cmd_archive }, | |
379 | { "bisect--helper", cmd_bisect__helper, RUN_SETUP }, | |
380 | { "blame", cmd_blame, RUN_SETUP }, | |
381 | { "branch", cmd_branch, RUN_SETUP }, | |
382 | { "bundle", cmd_bundle, RUN_SETUP_GENTLY }, | |
383 | { "cat-file", cmd_cat_file, RUN_SETUP }, | |
384 | { "check-attr", cmd_check_attr, RUN_SETUP }, | |
385 | { "check-ignore", cmd_check_ignore, RUN_SETUP | NEED_WORK_TREE }, | |
386 | { "check-mailmap", cmd_check_mailmap, RUN_SETUP }, | |
387 | { "check-ref-format", cmd_check_ref_format }, | |
0ca560cb | 388 | { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE }, |
c6127fa3 SS |
389 | { "checkout-index", cmd_checkout_index, |
390 | RUN_SETUP | NEED_WORK_TREE}, | |
391 | { "cherry", cmd_cherry, RUN_SETUP }, | |
392 | { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE }, | |
393 | { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE }, | |
86d26f24 | 394 | { "clone", cmd_clone }, |
c6127fa3 SS |
395 | { "column", cmd_column, RUN_SETUP_GENTLY }, |
396 | { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE }, | |
397 | { "commit-tree", cmd_commit_tree, RUN_SETUP }, | |
398 | { "config", cmd_config, RUN_SETUP_GENTLY }, | |
399 | { "count-objects", cmd_count_objects, RUN_SETUP }, | |
400 | { "credential", cmd_credential, RUN_SETUP_GENTLY }, | |
401 | { "describe", cmd_describe, RUN_SETUP }, | |
402 | { "diff", cmd_diff }, | |
403 | { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE }, | |
404 | { "diff-index", cmd_diff_index, RUN_SETUP }, | |
405 | { "diff-tree", cmd_diff_tree, RUN_SETUP }, | |
406 | { "fast-export", cmd_fast_export, RUN_SETUP }, | |
407 | { "fetch", cmd_fetch, RUN_SETUP }, | |
408 | { "fetch-pack", cmd_fetch_pack, RUN_SETUP }, | |
409 | { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP }, | |
410 | { "for-each-ref", cmd_for_each_ref, RUN_SETUP }, | |
411 | { "format-patch", cmd_format_patch, RUN_SETUP }, | |
412 | { "fsck", cmd_fsck, RUN_SETUP }, | |
413 | { "fsck-objects", cmd_fsck, RUN_SETUP }, | |
414 | { "gc", cmd_gc, RUN_SETUP }, | |
415 | { "get-tar-commit-id", cmd_get_tar_commit_id }, | |
416 | { "grep", cmd_grep, RUN_SETUP_GENTLY }, | |
417 | { "hash-object", cmd_hash_object }, | |
418 | { "help", cmd_help }, | |
419 | { "index-pack", cmd_index_pack, RUN_SETUP_GENTLY }, | |
86d26f24 NTND |
420 | { "init", cmd_init_db }, |
421 | { "init-db", cmd_init_db }, | |
cbd9fc23 | 422 | { "interpret-trailers", cmd_interpret_trailers, RUN_SETUP_GENTLY }, |
c6127fa3 SS |
423 | { "log", cmd_log, RUN_SETUP }, |
424 | { "ls-files", cmd_ls_files, RUN_SETUP }, | |
425 | { "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY }, | |
426 | { "ls-tree", cmd_ls_tree, RUN_SETUP }, | |
427 | { "mailinfo", cmd_mailinfo }, | |
428 | { "mailsplit", cmd_mailsplit }, | |
429 | { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE }, | |
430 | { "merge-base", cmd_merge_base, RUN_SETUP }, | |
431 | { "merge-file", cmd_merge_file, RUN_SETUP_GENTLY }, | |
432 | { "merge-index", cmd_merge_index, RUN_SETUP }, | |
433 | { "merge-ours", cmd_merge_ours, RUN_SETUP }, | |
434 | { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, | |
435 | { "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, | |
436 | { "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, | |
437 | { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, | |
438 | { "merge-tree", cmd_merge_tree, RUN_SETUP }, | |
439 | { "mktag", cmd_mktag, RUN_SETUP }, | |
440 | { "mktree", cmd_mktree, RUN_SETUP }, | |
441 | { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE }, | |
442 | { "name-rev", cmd_name_rev, RUN_SETUP }, | |
443 | { "notes", cmd_notes, RUN_SETUP }, | |
444 | { "pack-objects", cmd_pack_objects, RUN_SETUP }, | |
445 | { "pack-redundant", cmd_pack_redundant, RUN_SETUP }, | |
446 | { "pack-refs", cmd_pack_refs, RUN_SETUP }, | |
447 | { "patch-id", cmd_patch_id }, | |
448 | { "pickaxe", cmd_blame, RUN_SETUP }, | |
449 | { "prune", cmd_prune, RUN_SETUP }, | |
450 | { "prune-packed", cmd_prune_packed, RUN_SETUP }, | |
1e1ea69f | 451 | { "pull", cmd_pull, RUN_SETUP | NEED_WORK_TREE }, |
c6127fa3 SS |
452 | { "push", cmd_push, RUN_SETUP }, |
453 | { "read-tree", cmd_read_tree, RUN_SETUP }, | |
454 | { "receive-pack", cmd_receive_pack }, | |
455 | { "reflog", cmd_reflog, RUN_SETUP }, | |
456 | { "remote", cmd_remote, RUN_SETUP }, | |
457 | { "remote-ext", cmd_remote_ext }, | |
458 | { "remote-fd", cmd_remote_fd }, | |
459 | { "repack", cmd_repack, RUN_SETUP }, | |
460 | { "replace", cmd_replace, RUN_SETUP }, | |
461 | { "rerere", cmd_rerere, RUN_SETUP }, | |
462 | { "reset", cmd_reset, RUN_SETUP }, | |
463 | { "rev-list", cmd_rev_list, RUN_SETUP }, | |
464 | { "rev-parse", cmd_rev_parse }, | |
465 | { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE }, | |
466 | { "rm", cmd_rm, RUN_SETUP }, | |
467 | { "send-pack", cmd_send_pack, RUN_SETUP }, | |
468 | { "shortlog", cmd_shortlog, RUN_SETUP_GENTLY | USE_PAGER }, | |
469 | { "show", cmd_show, RUN_SETUP }, | |
470 | { "show-branch", cmd_show_branch, RUN_SETUP }, | |
471 | { "show-ref", cmd_show_ref, RUN_SETUP }, | |
472 | { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE }, | |
473 | { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE }, | |
474 | { "stripspace", cmd_stripspace }, | |
74703a1e | 475 | { "submodule--helper", cmd_submodule__helper, RUN_SETUP }, |
c6127fa3 SS |
476 | { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP }, |
477 | { "tag", cmd_tag, RUN_SETUP }, | |
478 | { "unpack-file", cmd_unpack_file, RUN_SETUP }, | |
479 | { "unpack-objects", cmd_unpack_objects, RUN_SETUP }, | |
480 | { "update-index", cmd_update_index, RUN_SETUP }, | |
481 | { "update-ref", cmd_update_ref, RUN_SETUP }, | |
482 | { "update-server-info", cmd_update_server_info, RUN_SETUP }, | |
483 | { "upload-archive", cmd_upload_archive }, | |
484 | { "upload-archive--writer", cmd_upload_archive_writer }, | |
485 | { "var", cmd_var, RUN_SETUP_GENTLY }, | |
d07b00b7 | 486 | { "verify-commit", cmd_verify_commit, RUN_SETUP }, |
c6127fa3 SS |
487 | { "verify-pack", cmd_verify_pack }, |
488 | { "verify-tag", cmd_verify_tag, RUN_SETUP }, | |
489 | { "version", cmd_version }, | |
490 | { "whatchanged", cmd_whatchanged, RUN_SETUP }, | |
df0b6cfb | 491 | { "worktree", cmd_worktree, RUN_SETUP }, |
c6127fa3 SS |
492 | { "write-tree", cmd_write_tree, RUN_SETUP }, |
493 | }; | |
494 | ||
c4f901d1 | 495 | static struct cmd_struct *get_builtin(const char *s) |
c6127fa3 SS |
496 | { |
497 | int i; | |
498 | for (i = 0; i < ARRAY_SIZE(commands); i++) { | |
c4f901d1 | 499 | struct cmd_struct *p = commands + i; |
c6127fa3 | 500 | if (!strcmp(s, p->cmd)) |
c4f901d1 | 501 | return p; |
c6127fa3 | 502 | } |
c4f901d1 SV |
503 | return NULL; |
504 | } | |
505 | ||
506 | int is_builtin(const char *s) | |
507 | { | |
508 | return !!get_builtin(s); | |
c6127fa3 SS |
509 | } |
510 | ||
63ca1c09 AK |
511 | #ifdef STRIP_EXTENSION |
512 | static void strip_extension(const char **argv) | |
513 | { | |
514 | size_t len; | |
515 | ||
516 | if (strip_suffix(argv[0], STRIP_EXTENSION, &len)) | |
517 | argv[0] = xmemdupz(argv[0], len); | |
518 | } | |
519 | #else | |
520 | #define strip_extension(cmd) | |
521 | #endif | |
522 | ||
3f784a4d | 523 | static void handle_builtin(int argc, const char **argv) |
231af832 | 524 | { |
63ca1c09 | 525 | const char *cmd; |
c4f901d1 | 526 | struct cmd_struct *builtin; |
23326d14 | 527 | |
63ca1c09 AK |
528 | strip_extension(argv); |
529 | cmd = argv[0]; | |
231af832 | 530 | |
1cd95087 LT |
531 | /* Turn "git cmd --help" into "git help cmd" */ |
532 | if (argc > 1 && !strcmp(argv[1], "--help")) { | |
533 | argv[1] = argv[0]; | |
534 | argv[0] = cmd = "help"; | |
535 | } | |
536 | ||
c4f901d1 | 537 | builtin = get_builtin(cmd); |
441981bc JH |
538 | if (builtin) |
539 | exit(run_builtin(builtin, argc, argv)); | |
231af832 LT |
540 | } |
541 | ||
7550be0a JH |
542 | static void execv_dashed_external(const char **argv) |
543 | { | |
f285a2d7 | 544 | struct strbuf cmd = STRBUF_INIT; |
7550be0a | 545 | const char *tmp; |
d8e96fd8 | 546 | int status; |
7550be0a | 547 | |
92058e4d JK |
548 | if (use_pager == -1) |
549 | use_pager = check_pager_config(argv[0]); | |
030149a4 JN |
550 | commit_pager_choice(); |
551 | ||
7550be0a JH |
552 | strbuf_addf(&cmd, "git-%s", argv[0]); |
553 | ||
554 | /* | |
555 | * argv[0] must be the git command, but the argv array | |
556 | * belongs to the caller, and may be reused in | |
557 | * subsequent loop iterations. Save argv[0] and | |
558 | * restore it on error. | |
559 | */ | |
560 | tmp = argv[0]; | |
561 | argv[0] = cmd.buf; | |
562 | ||
563 | trace_argv_printf(argv, "trace: exec:"); | |
564 | ||
d8e96fd8 JK |
565 | /* |
566 | * if we fail because the command is not found, it is | |
567 | * OK to return. Otherwise, we just pass along the status code. | |
568 | */ | |
10c6cddd | 569 | status = run_command_v_opt(argv, RUN_SILENT_EXEC_FAILURE | RUN_CLEAN_ON_EXIT); |
0ac77ec3 | 570 | if (status >= 0 || errno != ENOENT) |
5709e036 | 571 | exit(status); |
7550be0a JH |
572 | |
573 | argv[0] = tmp; | |
574 | ||
575 | strbuf_release(&cmd); | |
576 | } | |
577 | ||
a907e1b6 AS |
578 | static int run_argv(int *argcp, const char ***argv) |
579 | { | |
580 | int done_alias = 0; | |
581 | ||
582 | while (1) { | |
441981bc JH |
583 | /* |
584 | * If we tried alias and futzed with our environment, | |
585 | * it no longer is safe to invoke builtins directly in | |
586 | * general. We have to spawn them as dashed externals. | |
587 | * | |
588 | * NEEDSWORK: if we can figure out cases | |
589 | * where it is safe to do, we can avoid spawning a new | |
590 | * process. | |
591 | */ | |
592 | if (!done_alias) | |
593 | handle_builtin(*argcp, *argv); | |
a907e1b6 AS |
594 | |
595 | /* .. then try the external ones */ | |
596 | execv_dashed_external(*argv); | |
597 | ||
598 | /* It could be an alias -- this works around the insanity | |
599 | * of overriding "git log" with "git show" by having | |
600 | * alias.log = show | |
601 | */ | |
c0562611 NTND |
602 | if (done_alias) |
603 | break; | |
c0562611 | 604 | if (!handle_alias(argcp, argv)) |
a907e1b6 AS |
605 | break; |
606 | done_alias = 1; | |
607 | } | |
608 | ||
609 | return done_alias; | |
610 | } | |
611 | ||
3f2e2297 | 612 | int cmd_main(int argc, const char **argv) |
8e49d503 | 613 | { |
4dd47c3b | 614 | const char *cmd; |
8fa7975b | 615 | int done_help = 0; |
231af832 | 616 | |
650c4492 | 617 | cmd = argv[0]; |
2cd72b0b | 618 | if (!cmd) |
4dd47c3b | 619 | cmd = "git-help"; |
8e49d503 | 620 | |
578da039 KB |
621 | trace_command_performance(argv); |
622 | ||
231af832 LT |
623 | /* |
624 | * "git-xxxx" is the same as "git xxxx", but we obviously: | |
625 | * | |
626 | * - cannot take flags in between the "git" and the "xxxx". | |
627 | * - cannot execute it externally (since it would just do | |
628 | * the same thing over again) | |
629 | * | |
3f784a4d SS |
630 | * So we just directly call the builtin handler, and die if |
631 | * that one cannot handle it. | |
231af832 | 632 | */ |
ae021d87 | 633 | if (skip_prefix(cmd, "git-", &cmd)) { |
231af832 | 634 | argv[0] = cmd; |
3f784a4d SS |
635 | handle_builtin(argc, argv); |
636 | die("cannot handle %s as a builtin", cmd); | |
231af832 | 637 | } |
8e49d503 | 638 | |
231af832 | 639 | /* Look for flags.. */ |
6acbcb92 JS |
640 | argv++; |
641 | argc--; | |
4394efec | 642 | handle_options(&argv, &argc, NULL); |
6acbcb92 | 643 | if (argc > 0) { |
6d877803 JK |
644 | /* translate --help and --version into commands */ |
645 | skip_prefix(argv[0], "--", &argv[0]); | |
6acbcb92 | 646 | } else { |
3d7e2d85 | 647 | /* The user didn't specify a command; give them help */ |
73e25e7c | 648 | commit_pager_choice(); |
3d7e2d85 SP |
649 | printf("usage: %s\n\n", git_usage_string); |
650 | list_common_cmds_help(); | |
421a9769 | 651 | printf("\n%s\n", _(git_more_info_string)); |
3d7e2d85 | 652 | exit(1); |
97fc6c5f | 653 | } |
6acbcb92 | 654 | cmd = argv[0]; |
231af832 LT |
655 | |
656 | /* | |
511707d4 | 657 | * We use PATH to find git commands, but we prepend some higher |
3ea3c215 | 658 | * precedence paths: the "--exec-path" option, the GIT_EXEC_PATH |
511707d4 SP |
659 | * environment, and the $(gitexecdir) from the Makefile at build |
660 | * time. | |
231af832 | 661 | */ |
e1464ca7 | 662 | setup_path(); |
8e49d503 | 663 | |
a025463b | 664 | while (1) { |
8fa7975b | 665 | int was_alias = run_argv(&argc, &argv); |
a907e1b6 | 666 | if (errno != ENOENT) |
a025463b | 667 | break; |
a907e1b6 | 668 | if (was_alias) { |
f3dd015c | 669 | fprintf(stderr, "Expansion of alias '%s' failed; " |
7283bbc7 | 670 | "'%s' is not a git command\n", |
f3dd015c TT |
671 | cmd, argv[0]); |
672 | exit(1); | |
673 | } | |
a907e1b6 AS |
674 | if (!done_help) { |
675 | cmd = argv[0] = help_unknown_cmd(cmd); | |
676 | done_help = 1; | |
677 | } else | |
678 | break; | |
f3dd015c | 679 | } |
10b15b86 AR |
680 | |
681 | fprintf(stderr, "Failed to run command '%s': %s\n", | |
33ebb871 | 682 | cmd, strerror(errno)); |
8e49d503 AE |
683 | |
684 | return 1; | |
685 | } |