]> git.ipfire.org Git - thirdparty/git.git/blame - git.c
Merge branch 'jc/show-untracked-false'
[thirdparty/git.git] / git.c
CommitLineData
85023577 1#include "builtin.h"
b2141fc1 2#include "config.h"
32a8f510 3#include "environment.h"
d807c4a0 4#include "exec-cmd.h"
f394e093 5#include "gettext.h"
fd5c363d 6#include "help.h"
c784b0a5 7#include "object-file.h"
ca4eed70 8#include "pager.h"
08c46a49 9#include "read-cache-ll.h"
d8e96fd8 10#include "run-command.h"
65b5f948 11#include "alias.h"
cbeab747 12#include "replace-object.h"
e38da487 13#include "setup.h"
44451a2e 14#include "attr.h"
120ad2b0 15#include "shallow.h"
74ea5c95
EN
16#include "trace.h"
17#include "trace2.h"
8e49d503 18
007aa8d8
NTND
19#define RUN_SETUP (1<<0)
20#define RUN_SETUP_GENTLY (1<<1)
21#define USE_PAGER (1<<2)
22/*
23 * require working tree to be present -- anything uses this needs
24 * RUN_SETUP for reading from the configuration file.
25 */
26#define NEED_WORK_TREE (1<<3)
4002ec3d
ÆAB
27#define DELAY_PAGER_CONFIG (1<<4)
28#define NO_PARSEOPT (1<<5) /* parse-options is not used */
007aa8d8
NTND
29
30struct cmd_struct {
31 const char *cmd;
32 int (*fn)(int, const char **, const char *);
e9547947 33 unsigned int option;
007aa8d8
NTND
34};
35
822a7d50 36const char git_usage_string[] =
6b52f48b 37 N_("git [-v | --version] [-h | --help] [-C <path>] [-c <name>=<value>]\n"
fc045fe7 38 " [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]\n"
7213c288 39 " [-p | --paginate | -P | --no-pager] [--no-replace-objects] [--bare]\n"
fc045fe7 40 " [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]\n"
4002ec3d 41 " [--config-env=<name>=<envvar>] <command> [<args>]");
822a7d50 42
b7d96819 43const char git_more_info_string[] =
ad5fe377 44 N_("'git help -a' and 'git help -g' list available subcommands and some\n"
73903d0b 45 "concept guides. See 'git help <command>' or 'git help <concept>'\n"
e55f36b8
PO
46 "to read about a specific subcommand or concept.\n"
47 "See 'git help git' for an overview of the system.");
b7d96819 48
4e10738a 49static int use_pager = -1;
c0562611 50
e5d7a619 51static void list_builtins(struct string_list *list, unsigned int exclude_option);
8893fd95 52
e11dca10
NTND
53static void exclude_helpers_from_list(struct string_list *list)
54{
55 int i = 0;
56
57 while (i < list->nr) {
58 if (strstr(list->items[i].string, "--"))
59 unsorted_string_list_delete_item(list, i, 0);
60 else
61 i++;
62 }
63}
64
0089521c
NTND
65static int match_token(const char *spec, int len, const char *token)
66{
67 int token_len = strlen(token);
68
69 return len == token_len && !strncmp(spec, token, token_len);
70}
71
72static int list_cmds(const char *spec)
73{
e5d7a619
NTND
74 struct string_list list = STRING_LIST_INIT_DUP;
75 int i;
83b0ecf3
JK
76 int nongit;
77
78 /*
79 * Set up the repository so we can pick up any repo-level config (like
80 * completion.commands).
81 */
82 setup_git_directory_gently(&nongit);
e5d7a619 83
0089521c
NTND
84 while (*spec) {
85 const char *sep = strchrnul(spec, ',');
86 int len = sep - spec;
87
88 if (match_token(spec, len, "builtins"))
e5d7a619 89 list_builtins(&list, 0);
6bb2dc0b
NTND
90 else if (match_token(spec, len, "main"))
91 list_all_main_cmds(&list);
92 else if (match_token(spec, len, "others"))
93 list_all_other_cmds(&list);
e11dca10
NTND
94 else if (match_token(spec, len, "nohelpers"))
95 exclude_helpers_from_list(&list);
3301d36b
NTND
96 else if (match_token(spec, len, "alias"))
97 list_aliases(&list);
6532f374
NTND
98 else if (match_token(spec, len, "config"))
99 list_cmds_by_config(&list);
3c777767
NTND
100 else if (len > 5 && !strncmp(spec, "list-", 5)) {
101 struct strbuf sb = STRBUF_INIT;
102
103 strbuf_add(&sb, spec + 5, len - 5);
104 list_cmds_by_category(&list, sb.buf);
105 strbuf_release(&sb);
106 }
0089521c
NTND
107 else
108 die(_("unsupported command listing type '%s'"), spec);
109 spec += len;
110 if (*spec == ',')
111 spec++;
112 }
e5d7a619
NTND
113 for (i = 0; i < list.nr; i++)
114 puts(list.items[i].string);
115 string_list_clear(&list, 0);
0089521c
NTND
116 return 0;
117}
8893fd95 118
3b335762
NTND
119static void commit_pager_choice(void)
120{
4e10738a
JK
121 switch (use_pager) {
122 case 0:
123 setenv("GIT_PAGER", "cat", 1);
124 break;
125 case 1:
126 setup_pager();
127 break;
128 default:
129 break;
130 }
131}
132
033fe3d9
133void setup_auto_pager(const char *cmd, int def)
134{
135 if (use_pager != -1 || pager_in_use())
136 return;
137 use_pager = check_pager_config(cmd);
138 if (use_pager == -1)
139 use_pager = def;
140 commit_pager_choice();
141}
142
4b25d091 143static int handle_options(const char ***argv, int *argc, int *envchanged)
4ab243a9 144{
73546c08 145 const char **orig_argv = *argv;
4ab243a9
JS
146
147 while (*argc > 0) {
148 const char *cmd = (*argv)[0];
149 if (cmd[0] != '-')
150 break;
151
6acbcb92
JS
152 /*
153 * For legacy reasons, the "version" and "help"
154 * commands can be written with "--" prepended
155 * to make them look like flags.
156 */
6b52f48b
GF
157 if (!strcmp(cmd, "--help") || !strcmp(cmd, "-h") ||
158 !strcmp(cmd, "--version") || !strcmp(cmd, "-v"))
6acbcb92
JS
159 break;
160
161 /*
162 * Check remaining flags.
163 */
ae021d87 164 if (skip_prefix(cmd, "--exec-path", &cmd)) {
6acbcb92 165 if (*cmd == '=')
226c0ddd 166 git_set_exec_path(cmd + 1);
6acbcb92
JS
167 else {
168 puts(git_exec_path());
ee4512ed 169 trace2_cmd_name("_query_");
6acbcb92
JS
170 exit(0);
171 }
89a56bfb
MH
172 } else if (!strcmp(cmd, "--html-path")) {
173 puts(system_path(GIT_HTML_PATH));
ee4512ed 174 trace2_cmd_name("_query_");
89a56bfb 175 exit(0);
f2dd8c37
JS
176 } else if (!strcmp(cmd, "--man-path")) {
177 puts(system_path(GIT_MAN_PATH));
ee4512ed 178 trace2_cmd_name("_query_");
f2dd8c37
JS
179 exit(0);
180 } else if (!strcmp(cmd, "--info-path")) {
181 puts(system_path(GIT_INFO_PATH));
ee4512ed 182 trace2_cmd_name("_query_");
f2dd8c37 183 exit(0);
6acbcb92 184 } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) {
4e10738a 185 use_pager = 1;
7213c288 186 } else if (!strcmp(cmd, "-P") || !strcmp(cmd, "--no-pager")) {
4e10738a 187 use_pager = 0;
463a849d
MM
188 if (envchanged)
189 *envchanged = 1;
c784b0a5
JH
190 } else if (!strcmp(cmd, "--no-lazy-fetch")) {
191 fetch_if_missing = 0;
e6d5479e
JH
192 setenv(NO_LAZY_FETCH_ENVIRONMENT, "1", 1);
193 if (envchanged)
194 *envchanged = 1;
b0fa7ab5 195 } else if (!strcmp(cmd, "--no-replace-objects")) {
d24eda4e 196 disable_replace_refs();
6476b38b
CC
197 setenv(NO_REPLACE_OBJECTS_ENVIRONMENT, "1", 1);
198 if (envchanged)
199 *envchanged = 1;
6acbcb92 200 } else if (!strcmp(cmd, "--git-dir")) {
c321f00d 201 if (*argc < 2) {
986cd655 202 fprintf(stderr, _("no directory given for '%s' option\n" ), "--git-dir");
c321f00d
BG
203 usage(git_usage_string);
204 }
45b09794 205 setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1);
4394efec
ML
206 if (envchanged)
207 *envchanged = 1;
6acbcb92
JS
208 (*argv)++;
209 (*argc)--;
ae021d87
JK
210 } else if (skip_prefix(cmd, "--git-dir=", &cmd)) {
211 setenv(GIT_DIR_ENVIRONMENT, cmd, 1);
4394efec
ML
212 if (envchanged)
213 *envchanged = 1;
a1bea2c1
JT
214 } else if (!strcmp(cmd, "--namespace")) {
215 if (*argc < 2) {
fc045fe7 216 fprintf(stderr, _("no namespace given for --namespace\n" ));
a1bea2c1
JT
217 usage(git_usage_string);
218 }
219 setenv(GIT_NAMESPACE_ENVIRONMENT, (*argv)[1], 1);
220 if (envchanged)
221 *envchanged = 1;
222 (*argv)++;
223 (*argc)--;
ae021d87
JK
224 } else if (skip_prefix(cmd, "--namespace=", &cmd)) {
225 setenv(GIT_NAMESPACE_ENVIRONMENT, cmd, 1);
a1bea2c1
JT
226 if (envchanged)
227 *envchanged = 1;
892c41b9
ML
228 } else if (!strcmp(cmd, "--work-tree")) {
229 if (*argc < 2) {
986cd655 230 fprintf(stderr, _("no directory given for '%s' option\n" ), "--work-tree");
892c41b9
ML
231 usage(git_usage_string);
232 }
233 setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1);
4394efec
ML
234 if (envchanged)
235 *envchanged = 1;
892c41b9
ML
236 (*argv)++;
237 (*argc)--;
ae021d87
JK
238 } else if (skip_prefix(cmd, "--work-tree=", &cmd)) {
239 setenv(GIT_WORK_TREE_ENVIRONMENT, cmd, 1);
4394efec
ML
240 if (envchanged)
241 *envchanged = 1;
6acbcb92 242 } else if (!strcmp(cmd, "--bare")) {
4d3ab44d 243 char *cwd = xgetcwd();
6adcca3f 244 is_bare_repository_cfg = 1;
4d3ab44d
RS
245 setenv(GIT_DIR_ENVIRONMENT, cwd, 0);
246 free(cwd);
2cd83d10 247 setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, "0", 1);
4394efec
ML
248 if (envchanged)
249 *envchanged = 1;
8b1fa778
AR
250 } else if (!strcmp(cmd, "-c")) {
251 if (*argc < 2) {
fc045fe7 252 fprintf(stderr, _("-c expects a configuration string\n" ));
8b1fa778
AR
253 usage(git_usage_string);
254 }
2b64fc89 255 git_config_push_parameter((*argv)[1]);
8b1fa778
AR
256 (*argv)++;
257 (*argc)--;
c331551c
PS
258 } else if (!strcmp(cmd, "--config-env")) {
259 if (*argc < 2) {
260 fprintf(stderr, _("no config key given for --config-env\n" ));
261 usage(git_usage_string);
262 }
263 git_config_push_env((*argv)[1]);
264 (*argv)++;
265 (*argc)--;
ce81b1da
PS
266 } else if (skip_prefix(cmd, "--config-env=", &cmd)) {
267 git_config_push_env(cmd);
823ab40f
JK
268 } else if (!strcmp(cmd, "--literal-pathspecs")) {
269 setenv(GIT_LITERAL_PATHSPECS_ENVIRONMENT, "1", 1);
270 if (envchanged)
271 *envchanged = 1;
272 } else if (!strcmp(cmd, "--no-literal-pathspecs")) {
273 setenv(GIT_LITERAL_PATHSPECS_ENVIRONMENT, "0", 1);
274 if (envchanged)
275 *envchanged = 1;
bd30c2e4
NTND
276 } else if (!strcmp(cmd, "--glob-pathspecs")) {
277 setenv(GIT_GLOB_PATHSPECS_ENVIRONMENT, "1", 1);
278 if (envchanged)
279 *envchanged = 1;
280 } else if (!strcmp(cmd, "--noglob-pathspecs")) {
281 setenv(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, "1", 1);
282 if (envchanged)
283 *envchanged = 1;
93d93537
NTND
284 } else if (!strcmp(cmd, "--icase-pathspecs")) {
285 setenv(GIT_ICASE_PATHSPECS_ENVIRONMENT, "1", 1);
286 if (envchanged)
287 *envchanged = 1;
27344d6a
JK
288 } else if (!strcmp(cmd, "--no-optional-locks")) {
289 setenv(GIT_OPTIONAL_LOCKS_ENVIRONMENT, "0", 1);
290 if (envchanged)
291 *envchanged = 1;
6035d6aa
NTND
292 } else if (!strcmp(cmd, "--shallow-file")) {
293 (*argv)++;
294 (*argc)--;
6a2df51c 295 set_alternate_shallow_file(the_repository, (*argv)[0], 1);
6035d6aa
NTND
296 if (envchanged)
297 *envchanged = 1;
44e1e4d6
NR
298 } else if (!strcmp(cmd, "-C")) {
299 if (*argc < 2) {
986cd655 300 fprintf(stderr, _("no directory given for '%s' option\n" ), "-C");
44e1e4d6
NR
301 usage(git_usage_string);
302 }
6a536e20
KN
303 if ((*argv)[1][0]) {
304 if (chdir((*argv)[1]))
fc045fe7 305 die_errno("cannot change to '%s'", (*argv)[1]);
6a536e20
KN
306 if (envchanged)
307 *envchanged = 1;
308 }
44e1e4d6
NR
309 (*argv)++;
310 (*argc)--;
0089521c 311 } else if (skip_prefix(cmd, "--list-cmds=", &cmd)) {
ee4512ed 312 trace2_cmd_name("_query_");
0089521c 313 if (!strcmp(cmd, "parseopt")) {
e5d7a619
NTND
314 struct string_list list = STRING_LIST_INIT_DUP;
315 int i;
316
317 list_builtins(&list, NO_PARSEOPT);
318 for (i = 0; i < list.nr; i++)
319 printf("%s ", list.items[i].string);
320 string_list_clear(&list, 0);
0089521c
NTND
321 exit(0);
322 } else {
323 exit(list_cmds(cmd));
324 }
44451a2e
JC
325 } else if (!strcmp(cmd, "--attr-source")) {
326 if (*argc < 2) {
327 fprintf(stderr, _("no attribute source given for --attr-source\n" ));
328 usage(git_usage_string);
329 }
330 setenv(GIT_ATTR_SOURCE_ENVIRONMENT, (*argv)[1], 1);
331 if (envchanged)
332 *envchanged = 1;
333 (*argv)++;
334 (*argc)--;
335 } else if (skip_prefix(cmd, "--attr-source=", &cmd)) {
336 set_git_attr_source(cmd);
337 setenv(GIT_ATTR_SOURCE_ENVIRONMENT, cmd, 1);
338 if (envchanged)
339 *envchanged = 1;
6acbcb92 340 } else {
fc045fe7 341 fprintf(stderr, _("unknown option: %s\n"), cmd);
822a7d50 342 usage(git_usage_string);
6acbcb92 343 }
4ab243a9
JS
344
345 (*argv)++;
346 (*argc)--;
4ab243a9 347 }
73546c08 348 return (*argv) - orig_argv;
4ab243a9
JS
349}
350
2b11e317
JS
351static int handle_alias(int *argcp, const char ***argv)
352{
af05d679 353 int envchanged = 0, ret = 0, saved_errno = errno;
0347a8c7 354 int count, option_count;
4b25d091 355 const char **new_argv;
94351118
JK
356 const char *alias_command;
357 char *alias_string;
0347a8c7
ML
358
359 alias_command = (*argv)[0];
94351118 360 alias_string = alias_lookup(alias_command);
0347a8c7 361 if (alias_string) {
a9a60b94
RV
362 if (*argcp > 1 && !strcmp((*argv)[1], "-h"))
363 fprintf_ln(stderr, _("'%s' is aliased to '%s'"),
364 alias_command, alias_string);
dfd42a3c 365 if (alias_string[0] == '!') {
850d2fec 366 struct child_process child = CHILD_PROCESS_INIT;
a9bcf658
JS
367 int nongit_ok;
368
369 /* Aliases expect GIT_PREFIX, GIT_DIR etc to be set */
370 setup_git_directory_gently(&nongit_ok);
7f51f8bc 371
030149a4 372 commit_pager_choice();
7f51f8bc 373
850d2fec 374 child.use_shell = 1;
c0d73a59
TA
375 child.clean_on_exit = 1;
376 child.wait_after_clean = 1;
ee4512ed 377 child.trace2_child_class = "shell_alias";
ef8d7ac4
JK
378 strvec_push(&child.args, alias_string + 1);
379 strvec_pushv(&child.args, (*argv) + 1);
7f51f8bc 380
d70a9eb6 381 trace2_cmd_alias(alias_command, child.args.v);
ee4512ed
JH
382 trace2_cmd_name("_run_shell_alias_");
383
850d2fec 384 ret = run_command(&child);
7f51f8bc
EFL
385 if (ret >= 0) /* normal exit */
386 exit(ret);
387
8aa8c140
NTND
388 die_errno(_("while expanding alias '%s': '%s'"),
389 alias_command, alias_string + 1);
dfd42a3c 390 }
0347a8c7 391 count = split_cmdline(alias_string, &new_argv);
dc4179f9 392 if (count < 0)
8aa8c140 393 die(_("bad alias.%s string: %s"), alias_command,
a7412ae1 394 _(split_cmdline_strerror(count)));
4394efec
ML
395 option_count = handle_options(&new_argv, &count, &envchanged);
396 if (envchanged)
8aa8c140
NTND
397 die(_("alias '%s' changes environment variables.\n"
398 "You can use '!git' in the alias to do this"),
399 alias_command);
7bd97d6d 400 MOVE_ARRAY(new_argv - option_count, new_argv, count);
0347a8c7
ML
401 new_argv -= option_count;
402
403 if (count < 1)
8aa8c140 404 die(_("empty alias for %s"), alias_command);
0347a8c7
ML
405
406 if (!strcmp(alias_command, new_argv[0]))
8aa8c140 407 die(_("recursive alias: %s"), alias_command);
0347a8c7 408
b319ce4c 409 trace_argv_printf(new_argv,
6ce4e61f
CC
410 "trace: alias expansion: %s =>",
411 alias_command);
575ba9d6 412
2756ca43 413 REALLOC_ARRAY(new_argv, count + *argcp);
0347a8c7 414 /* insert after command name */
7bd97d6d 415 COPY_ARRAY(new_argv + count, *argv + 1, *argcp);
2b11e317 416
ee4512ed 417 trace2_cmd_alias(alias_command, new_argv);
ee4512ed 418
0347a8c7
ML
419 *argv = new_argv;
420 *argcp += count - 1;
2b11e317 421
0347a8c7 422 ret = 1;
2b11e317
JS
423 }
424
47e5c0ca
JS
425 errno = saved_errno;
426
2b11e317
JS
427 return ret;
428}
429
f172f334 430static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
47d0b4ff 431{
99caeed0 432 int status, help;
0f157315 433 struct stat st;
47d0b4ff 434 const char *prefix;
e5b17bda 435 int run_setup = (p->option & (RUN_SETUP | RUN_SETUP_GENTLY));
47d0b4ff 436
99caeed0 437 help = argc == 2 && !strcmp(argv[1], "-h");
e5b17bda
LD
438 if (help && (run_setup & RUN_SETUP))
439 /* demote to GENTLY to allow 'git cmd -h' outside repo */
440 run_setup = RUN_SETUP_GENTLY;
441
442 if (run_setup & RUN_SETUP) {
443 prefix = setup_git_directory();
444 } else if (run_setup & RUN_SETUP_GENTLY) {
445 int nongit_ok;
446 prefix = setup_git_directory_gently(&nongit_ok);
447 } else {
448 prefix = NULL;
99caeed0 449 }
9725c8dd 450 assert(!prefix || *prefix);
e5b17bda
LD
451 precompose_argv_prefix(argc, argv, NULL);
452 if (use_pager == -1 && run_setup &&
453 !(p->option & DELAY_PAGER_CONFIG))
454 use_pager = check_pager_config(p->cmd);
455 if (use_pager == -1 && p->option & USE_PAGER)
456 use_pager = 1;
457 if (run_setup && startup_info->have_repository)
458 /* get_git_dir() may set up repo, avoid that */
17ab64e1 459 trace_repo_setup();
4e10738a
JK
460 commit_pager_choice();
461
99caeed0 462 if (!help && p->option & NEED_WORK_TREE)
59f0f2f3
MH
463 setup_work_tree();
464
b319ce4c 465 trace_argv_printf(argv, "trace: built-in: git");
ee4512ed 466 trace2_cmd_name(p->cmd);
47d0b4ff 467
f8adbec9 468 validate_cache_entries(the_repository->index);
0f157315 469 status = p->fn(argc, argv, prefix);
f8adbec9 470 validate_cache_entries(the_repository->index);
8616a2d0 471
0f157315 472 if (status)
47e3de0e 473 return status;
0f157315
LT
474
475 /* Somebody closed stdout? */
476 if (fstat(fileno(stdout), &st))
477 return 0;
478 /* Ignore write errors for pipes and sockets.. */
479 if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode))
480 return 0;
481
482 /* Check for ENOSPC and EIO errors.. */
0227f988 483 if (fflush(stdout))
8aa8c140 484 die_errno(_("write failure on standard output"));
0227f988 485 if (ferror(stdout))
8aa8c140 486 die(_("unknown write failure on standard output"));
0227f988 487 if (fclose(stdout))
8aa8c140 488 die_errno(_("close failed on standard output"));
0f157315 489 return 0;
47d0b4ff
LT
490}
491
c6127fa3
SS
492static struct cmd_struct commands[] = {
493 { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE },
783d7e86 494 { "am", cmd_am, RUN_SETUP | NEED_WORK_TREE },
66fa6e8e 495 { "annotate", cmd_annotate, RUN_SETUP },
c6127fa3 496 { "apply", cmd_apply, RUN_SETUP_GENTLY },
eb0224c6 497 { "archive", cmd_archive, RUN_SETUP_GENTLY },
73fce294 498 { "bisect", cmd_bisect, RUN_SETUP },
c6127fa3 499 { "blame", cmd_blame, RUN_SETUP },
d74b541e 500 { "branch", cmd_branch, RUN_SETUP | DELAY_PAGER_CONFIG },
d7a5649c 501 { "bugreport", cmd_bugreport, RUN_SETUP_GENTLY },
66fa6e8e 502 { "bundle", cmd_bundle, RUN_SETUP_GENTLY },
c6127fa3
SS
503 { "cat-file", cmd_cat_file, RUN_SETUP },
504 { "check-attr", cmd_check_attr, RUN_SETUP },
505 { "check-ignore", cmd_check_ignore, RUN_SETUP | NEED_WORK_TREE },
506 { "check-mailmap", cmd_check_mailmap, RUN_SETUP },
e9547947 507 { "check-ref-format", cmd_check_ref_format, NO_PARSEOPT },
0ca560cb 508 { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE },
e9e8adf1 509 { "checkout--worker", cmd_checkout__worker,
4002ec3d 510 RUN_SETUP | NEED_WORK_TREE },
c6127fa3
SS
511 { "checkout-index", cmd_checkout_index,
512 RUN_SETUP | NEED_WORK_TREE},
513 { "cherry", cmd_cherry, RUN_SETUP },
514 { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE },
515 { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE },
86d26f24 516 { "clone", cmd_clone },
c6127fa3
SS
517 { "column", cmd_column, RUN_SETUP_GENTLY },
518 { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE },
4ce58ee3 519 { "commit-graph", cmd_commit_graph, RUN_SETUP },
66fa6e8e 520 { "commit-tree", cmd_commit_tree, RUN_SETUP },
32888b8f 521 { "config", cmd_config, RUN_SETUP_GENTLY | DELAY_PAGER_CONFIG },
c6127fa3 522 { "count-objects", cmd_count_objects, RUN_SETUP },
e9547947 523 { "credential", cmd_credential, RUN_SETUP_GENTLY | NO_PARSEOPT },
b5dd96b7
JK
524 { "credential-cache", cmd_credential_cache },
525 { "credential-cache--daemon", cmd_credential_cache_daemon },
526 { "credential-store", cmd_credential_store },
c6127fa3 527 { "describe", cmd_describe, RUN_SETUP },
6783fd3c 528 { "diagnose", cmd_diagnose, RUN_SETUP_GENTLY },
e9547947
NTND
529 { "diff", cmd_diff, NO_PARSEOPT },
530 { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT },
531 { "diff-index", cmd_diff_index, RUN_SETUP | NO_PARSEOPT },
532 { "diff-tree", cmd_diff_tree, RUN_SETUP | NO_PARSEOPT },
20de316e 533 { "difftool", cmd_difftool, RUN_SETUP_GENTLY },
c6127fa3 534 { "fast-export", cmd_fast_export, RUN_SETUP },
a006f875 535 { "fast-import", cmd_fast_import, RUN_SETUP | NO_PARSEOPT },
c6127fa3 536 { "fetch", cmd_fetch, RUN_SETUP },
e9547947 537 { "fetch-pack", cmd_fetch_pack, RUN_SETUP | NO_PARSEOPT },
c6127fa3
SS
538 { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP },
539 { "for-each-ref", cmd_for_each_ref, RUN_SETUP },
4950b2a2 540 { "for-each-repo", cmd_for_each_repo, RUN_SETUP_GENTLY },
c6127fa3
SS
541 { "format-patch", cmd_format_patch, RUN_SETUP },
542 { "fsck", cmd_fsck, RUN_SETUP },
543 { "fsck-objects", cmd_fsck, RUN_SETUP },
bb61a962 544 { "fsmonitor--daemon", cmd_fsmonitor__daemon, RUN_SETUP },
c6127fa3 545 { "gc", cmd_gc, RUN_SETUP },
e9547947 546 { "get-tar-commit-id", cmd_get_tar_commit_id, NO_PARSEOPT },
f9ee2fcd 547 { "grep", cmd_grep, RUN_SETUP_GENTLY },
c6127fa3
SS
548 { "hash-object", cmd_hash_object },
549 { "help", cmd_help },
96e7225b 550 { "hook", cmd_hook, RUN_SETUP },
e9547947 551 { "index-pack", cmd_index_pack, RUN_SETUP_GENTLY | NO_PARSEOPT },
86d26f24
NTND
552 { "init", cmd_init_db },
553 { "init-db", cmd_init_db },
cbd9fc23 554 { "interpret-trailers", cmd_interpret_trailers, RUN_SETUP_GENTLY },
c6127fa3 555 { "log", cmd_log, RUN_SETUP },
188dce13 556 { "ls-files", cmd_ls_files, RUN_SETUP },
c6127fa3
SS
557 { "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY },
558 { "ls-tree", cmd_ls_tree, RUN_SETUP },
66fa6e8e 559 { "mailinfo", cmd_mailinfo, RUN_SETUP_GENTLY },
e9547947 560 { "mailsplit", cmd_mailsplit, NO_PARSEOPT },
03509544 561 { "maintenance", cmd_maintenance, RUN_SETUP },
c6127fa3
SS
562 { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE },
563 { "merge-base", cmd_merge_base, RUN_SETUP },
564 { "merge-file", cmd_merge_file, RUN_SETUP_GENTLY },
e9547947
NTND
565 { "merge-index", cmd_merge_index, RUN_SETUP | NO_PARSEOPT },
566 { "merge-ours", cmd_merge_ours, RUN_SETUP | NO_PARSEOPT },
567 { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT },
568 { "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT },
569 { "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT },
570 { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE | NO_PARSEOPT },
6ec755a0 571 { "merge-tree", cmd_merge_tree, RUN_SETUP },
66fa6e8e 572 { "mktag", cmd_mktag, RUN_SETUP },
c6127fa3 573 { "mktree", cmd_mktree, RUN_SETUP },
73ff4ad0 574 { "multi-pack-index", cmd_multi_pack_index, RUN_SETUP },
c6127fa3
SS
575 { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE },
576 { "name-rev", cmd_name_rev, RUN_SETUP },
577 { "notes", cmd_notes, RUN_SETUP },
578 { "pack-objects", cmd_pack_objects, RUN_SETUP },
e9547947 579 { "pack-redundant", cmd_pack_redundant, RUN_SETUP | NO_PARSEOPT },
c6127fa3 580 { "pack-refs", cmd_pack_refs, RUN_SETUP },
e9547947 581 { "patch-id", cmd_patch_id, RUN_SETUP_GENTLY | NO_PARSEOPT },
c6127fa3
SS
582 { "pickaxe", cmd_blame, RUN_SETUP },
583 { "prune", cmd_prune, RUN_SETUP },
584 { "prune-packed", cmd_prune_packed, RUN_SETUP },
1e1ea69f 585 { "pull", cmd_pull, RUN_SETUP | NEED_WORK_TREE },
c6127fa3 586 { "push", cmd_push, RUN_SETUP },
348ae56c 587 { "range-diff", cmd_range_diff, RUN_SETUP | USE_PAGER },
4002ec3d 588 { "read-tree", cmd_read_tree, RUN_SETUP },
80dfc924 589 { "rebase", cmd_rebase, RUN_SETUP | NEED_WORK_TREE },
c6127fa3
SS
590 { "receive-pack", cmd_receive_pack },
591 { "reflog", cmd_reflog, RUN_SETUP },
592 { "remote", cmd_remote, RUN_SETUP },
e9547947
NTND
593 { "remote-ext", cmd_remote_ext, NO_PARSEOPT },
594 { "remote-fd", cmd_remote_fd, NO_PARSEOPT },
c6127fa3
SS
595 { "repack", cmd_repack, RUN_SETUP },
596 { "replace", cmd_replace, RUN_SETUP },
f920b028 597 { "replay", cmd_replay, RUN_SETUP },
c6127fa3
SS
598 { "rerere", cmd_rerere, RUN_SETUP },
599 { "reset", cmd_reset, RUN_SETUP },
46e91b66 600 { "restore", cmd_restore, RUN_SETUP | NEED_WORK_TREE },
e9547947
NTND
601 { "rev-list", cmd_rev_list, RUN_SETUP | NO_PARSEOPT },
602 { "rev-parse", cmd_rev_parse, NO_PARSEOPT },
c6127fa3
SS
603 { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE },
604 { "rm", cmd_rm, RUN_SETUP },
605 { "send-pack", cmd_send_pack, RUN_SETUP },
606 { "shortlog", cmd_shortlog, RUN_SETUP_GENTLY | USE_PAGER },
607 { "show", cmd_show, RUN_SETUP },
608 { "show-branch", cmd_show_branch, RUN_SETUP },
88a09a55 609 { "show-index", cmd_show_index, RUN_SETUP_GENTLY },
c6127fa3 610 { "show-ref", cmd_show_ref, RUN_SETUP },
24fc2cde 611 { "sparse-checkout", cmd_sparse_checkout, RUN_SETUP },
c6127fa3 612 { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE },
8a2cd3f5 613 { "stash", cmd_stash, RUN_SETUP | NEED_WORK_TREE },
c6127fa3
SS
614 { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE },
615 { "stripspace", cmd_stripspace },
f5a6be9d 616 { "submodule--helper", cmd_submodule__helper, RUN_SETUP },
d787d311 617 { "switch", cmd_switch, RUN_SETUP | NEED_WORK_TREE },
c6127fa3 618 { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },
de121ffe 619 { "tag", cmd_tag, RUN_SETUP | DELAY_PAGER_CONFIG },
e9547947
NTND
620 { "unpack-file", cmd_unpack_file, RUN_SETUP | NO_PARSEOPT },
621 { "unpack-objects", cmd_unpack_objects, RUN_SETUP | NO_PARSEOPT },
c6127fa3
SS
622 { "update-index", cmd_update_index, RUN_SETUP },
623 { "update-ref", cmd_update_ref, RUN_SETUP },
624 { "update-server-info", cmd_update_server_info, RUN_SETUP },
e9547947
NTND
625 { "upload-archive", cmd_upload_archive, NO_PARSEOPT },
626 { "upload-archive--writer", cmd_upload_archive_writer, NO_PARSEOPT },
a3d6b53e 627 { "upload-pack", cmd_upload_pack },
e9547947 628 { "var", cmd_var, RUN_SETUP_GENTLY | NO_PARSEOPT },
d07b00b7 629 { "verify-commit", cmd_verify_commit, RUN_SETUP },
c6127fa3
SS
630 { "verify-pack", cmd_verify_pack },
631 { "verify-tag", cmd_verify_tag, RUN_SETUP },
632 { "version", cmd_version },
633 { "whatchanged", cmd_whatchanged, RUN_SETUP },
398c4ff5 634 { "worktree", cmd_worktree, RUN_SETUP },
c6127fa3
SS
635 { "write-tree", cmd_write_tree, RUN_SETUP },
636};
637
c4f901d1 638static struct cmd_struct *get_builtin(const char *s)
c6127fa3
SS
639{
640 int i;
641 for (i = 0; i < ARRAY_SIZE(commands); i++) {
c4f901d1 642 struct cmd_struct *p = commands + i;
c6127fa3 643 if (!strcmp(s, p->cmd))
c4f901d1 644 return p;
c6127fa3 645 }
c4f901d1
SV
646 return NULL;
647}
648
649int is_builtin(const char *s)
650{
651 return !!get_builtin(s);
c6127fa3
SS
652}
653
e5d7a619 654static void list_builtins(struct string_list *out, unsigned int exclude_option)
8893fd95
JK
655{
656 int i;
e9547947
NTND
657 for (i = 0; i < ARRAY_SIZE(commands); i++) {
658 if (exclude_option &&
659 (commands[i].option & exclude_option))
660 continue;
e5d7a619 661 string_list_append(out, commands[i].cmd);
e9547947 662 }
8893fd95
JK
663}
664
722fc374
JS
665void load_builtin_commands(const char *prefix, struct cmdnames *cmds)
666{
667 const char *name;
668 int i;
669
670 /*
671 * Callers can ask for a subset of the commands based on a certain
672 * prefix, which is then dropped from the added names. The names in
673 * the `commands[]` array do not have the `git-` prefix, though,
674 * therefore we must expect the `prefix` to at least start with `git-`.
675 */
676 if (!skip_prefix(prefix, "git-", &prefix))
677 BUG("prefix '%s' must start with 'git-'", prefix);
678
679 for (i = 0; i < ARRAY_SIZE(commands); i++)
680 if (skip_prefix(commands[i].cmd, prefix, &name))
681 add_cmdname(cmds, name, strlen(name));
682}
683
63ca1c09
AK
684#ifdef STRIP_EXTENSION
685static void strip_extension(const char **argv)
686{
687 size_t len;
688
689 if (strip_suffix(argv[0], STRIP_EXTENSION, &len))
690 argv[0] = xmemdupz(argv[0], len);
691}
692#else
693#define strip_extension(cmd)
694#endif
695
3f784a4d 696static void handle_builtin(int argc, const char **argv)
231af832 697{
ef8d7ac4 698 struct strvec args = STRVEC_INIT;
63ca1c09 699 const char *cmd;
c4f901d1 700 struct cmd_struct *builtin;
23326d14 701
63ca1c09
AK
702 strip_extension(argv);
703 cmd = argv[0];
231af832 704
2c6b6d9f 705 /* Turn "git cmd --help" into "git help --exclude-guides cmd" */
1cd95087 706 if (argc > 1 && !strcmp(argv[1], "--help")) {
2c6b6d9f
RT
707 int i;
708
1cd95087
LT
709 argv[1] = argv[0];
710 argv[0] = cmd = "help";
2c6b6d9f
RT
711
712 for (i = 0; i < argc; i++) {
ef8d7ac4 713 strvec_push(&args, argv[i]);
2c6b6d9f 714 if (!i)
ef8d7ac4 715 strvec_push(&args, "--exclude-guides");
2c6b6d9f
RT
716 }
717
718 argc++;
d70a9eb6 719 argv = args.v;
1cd95087
LT
720 }
721
c4f901d1 722 builtin = get_builtin(cmd);
441981bc
JH
723 if (builtin)
724 exit(run_builtin(builtin, argc, argv));
ef8d7ac4 725 strvec_clear(&args);
231af832
LT
726}
727
7550be0a
JH
728static void execv_dashed_external(const char **argv)
729{
2b296c93 730 struct child_process cmd = CHILD_PROCESS_INIT;
d8e96fd8 731 int status;
7550be0a 732
595d59e2 733 if (use_pager == -1 && !is_builtin(argv[0]))
92058e4d 734 use_pager = check_pager_config(argv[0]);
030149a4
JN
735 commit_pager_choice();
736
ef8d7ac4
JK
737 strvec_pushf(&cmd.args, "git-%s", argv[0]);
738 strvec_pushv(&cmd.args, argv + 1);
2b296c93 739 cmd.clean_on_exit = 1;
46df6906 740 cmd.wait_after_clean = 1;
2b296c93 741 cmd.silent_exec_failure = 1;
ee4512ed 742 cmd.trace2_child_class = "dashed";
7550be0a 743
ee4512ed
JH
744 trace2_cmd_name("_run_dashed_");
745
746 /*
747 * The code in run_command() logs trace2 child_start/child_exit
748 * events, so we do not need to report exec/exec_result events here.
749 */
d70a9eb6 750 trace_argv_printf(cmd.args.v, "trace: exec:");
7550be0a 751
d8e96fd8 752 /*
246f0ede
JK
753 * If we fail because the command is not found, it is
754 * OK to return. Otherwise, we just pass along the status code,
755 * or our usual generic code if we were not even able to exec
756 * the program.
d8e96fd8 757 */
2b296c93 758 status = run_command(&cmd);
ee4512ed
JH
759
760 /*
761 * If the child process ran and we are now going to exit, emit a
762 * generic string as our trace2 command verb to indicate that we
763 * launched a dashed command.
764 */
246f0ede 765 if (status >= 0)
5709e036 766 exit(status);
246f0ede
JK
767 else if (errno != ENOENT)
768 exit(128);
7550be0a
JH
769}
770
a907e1b6
AS
771static int run_argv(int *argcp, const char ***argv)
772{
773 int done_alias = 0;
c6d75bc1 774 struct string_list cmd_list = STRING_LIST_INIT_NODUP;
82f71d9a 775 struct string_list_item *seen;
a907e1b6
AS
776
777 while (1) {
441981bc
JH
778 /*
779 * If we tried alias and futzed with our environment,
780 * it no longer is safe to invoke builtins directly in
781 * general. We have to spawn them as dashed externals.
782 *
783 * NEEDSWORK: if we can figure out cases
784 * where it is safe to do, we can avoid spawning a new
785 * process.
786 */
787 if (!done_alias)
788 handle_builtin(*argcp, *argv);
ee4512ed 789 else if (get_builtin(**argv)) {
0e906739 790 struct child_process cmd = CHILD_PROCESS_INIT;
ee4512ed
JH
791 int i;
792
793 /*
794 * The current process is committed to launching a
795 * child process to run the command named in (**argv)
796 * and exiting. Log a generic string as the trace2
797 * command verb to indicate this. Note that the child
798 * process will log the actual verb when it runs.
799 */
800 trace2_cmd_name("_run_git_alias_");
801
ee4512ed
JH
802 commit_pager_choice();
803
0e906739 804 strvec_push(&cmd.args, "git");
ee4512ed 805 for (i = 0; i < *argcp; i++)
0e906739 806 strvec_push(&cmd.args, (*argv)[i]);
ee4512ed 807
0e906739 808 trace_argv_printf(cmd.args.v, "trace: exec:");
ee4512ed
JH
809
810 /*
811 * if we fail because the command is not found, it is
812 * OK to return. Otherwise, we just pass along the status code.
813 */
0e906739
RS
814 cmd.silent_exec_failure = 1;
815 cmd.clean_on_exit = 1;
816 cmd.wait_after_clean = 1;
817 cmd.trace2_child_class = "git_alias";
818 i = run_command(&cmd);
ee4512ed
JH
819 if (i >= 0 || errno != ENOENT)
820 exit(i);
821 die("could not execute builtin %s", **argv);
822 }
ee4512ed 823
a907e1b6
AS
824 /* .. then try the external ones */
825 execv_dashed_external(*argv);
826
82f71d9a
TS
827 seen = unsorted_string_list_lookup(&cmd_list, *argv[0]);
828 if (seen) {
829 int i;
830 struct strbuf sb = STRBUF_INIT;
831 for (i = 0; i < cmd_list.nr; i++) {
832 struct string_list_item *item = &cmd_list.items[i];
833
834 strbuf_addf(&sb, "\n %s", item->string);
835 if (item == seen)
836 strbuf_addstr(&sb, " <==");
837 else if (i == cmd_list.nr - 1)
838 strbuf_addstr(&sb, " ==>");
839 }
c6d75bc1 840 die(_("alias loop detected: expansion of '%s' does"
82f71d9a 841 " not terminate:%s"), cmd_list.items[0].string, sb.buf);
c6d75bc1
TS
842 }
843
844 string_list_append(&cmd_list, *argv[0]);
845
846 /*
847 * It could be an alias -- this works around the insanity
a907e1b6
AS
848 * of overriding "git log" with "git show" by having
849 * alias.log = show
850 */
c0562611 851 if (!handle_alias(argcp, argv))
a907e1b6
AS
852 break;
853 done_alias = 1;
854 }
855
c6d75bc1
TS
856 string_list_clear(&cmd_list, 0);
857
a907e1b6
AS
858 return done_alias;
859}
860
3f2e2297 861int cmd_main(int argc, const char **argv)
8e49d503 862{
4dd47c3b 863 const char *cmd;
8fa7975b 864 int done_help = 0;
231af832 865
650c4492 866 cmd = argv[0];
2cd72b0b 867 if (!cmd)
4dd47c3b 868 cmd = "git-help";
6854a8f5
JK
869 else {
870 const char *slash = find_last_dir_sep(cmd);
871 if (slash)
872 cmd = slash + 1;
873 }
8e49d503 874
578da039
KB
875 trace_command_performance(argv);
876
231af832
LT
877 /*
878 * "git-xxxx" is the same as "git xxxx", but we obviously:
879 *
880 * - cannot take flags in between the "git" and the "xxxx".
881 * - cannot execute it externally (since it would just do
882 * the same thing over again)
883 *
3f784a4d
SS
884 * So we just directly call the builtin handler, and die if
885 * that one cannot handle it.
231af832 886 */
ae021d87 887 if (skip_prefix(cmd, "git-", &cmd)) {
231af832 888 argv[0] = cmd;
3f784a4d 889 handle_builtin(argc, argv);
8aa8c140 890 die(_("cannot handle %s as a builtin"), cmd);
231af832 891 }
8e49d503 892
231af832 893 /* Look for flags.. */
6acbcb92
JS
894 argv++;
895 argc--;
4394efec 896 handle_options(&argv, &argc, NULL);
413bc6d2
DS
897
898 if (!argc) {
3d7e2d85 899 /* The user didn't specify a command; give them help */
73e25e7c 900 commit_pager_choice();
8aa8c140 901 printf(_("usage: %s\n\n"), git_usage_string);
3d7e2d85 902 list_common_cmds_help();
421a9769 903 printf("\n%s\n", _(git_more_info_string));
3d7e2d85 904 exit(1);
97fc6c5f 905 }
413bc6d2
DS
906
907 if (!strcmp("--version", argv[0]) || !strcmp("-v", argv[0]))
908 argv[0] = "version";
909 else if (!strcmp("--help", argv[0]) || !strcmp("-h", argv[0]))
910 argv[0] = "help";
911
6acbcb92 912 cmd = argv[0];
231af832
LT
913
914 /*
511707d4 915 * We use PATH to find git commands, but we prepend some higher
3ea3c215 916 * precedence paths: the "--exec-path" option, the GIT_EXEC_PATH
511707d4
SP
917 * environment, and the $(gitexecdir) from the Makefile at build
918 * time.
231af832 919 */
e1464ca7 920 setup_path();
8e49d503 921
a025463b 922 while (1) {
8fa7975b 923 int was_alias = run_argv(&argc, &argv);
a907e1b6 924 if (errno != ENOENT)
a025463b 925 break;
a907e1b6 926 if (was_alias) {
fc045fe7
AS
927 fprintf(stderr, _("expansion of alias '%s' failed; "
928 "'%s' is not a git command\n"),
f3dd015c
TT
929 cmd, argv[0]);
930 exit(1);
931 }
a907e1b6
AS
932 if (!done_help) {
933 cmd = argv[0] = help_unknown_cmd(cmd);
934 done_help = 1;
935 } else
936 break;
f3dd015c 937 }
10b15b86 938
fc045fe7 939 fprintf(stderr, _("failed to run command '%s': %s\n"),
33ebb871 940 cmd, strerror(errno));
8e49d503
AE
941
942 return 1;
943}