blob: cb5208de6a5aab7c222a1d1655fe37089a119fe0 [file] [log] [blame]
Junio C Hamano85023572006-12-19 14:34:12 -08001#include "builtin.h"
Johannes Schindelin2b11e312006-06-05 19:43:52 +02002#include "cache.h"
Thiago Farinafd5c3632010-08-31 23:29:08 -03003#include "exec_cmd.h"
4#include "help.h"
Matthias Lederhofer575ba9d2006-06-25 15:56:18 +02005#include "quote.h"
Jeff Kingd8e96fd2009-01-28 02:38:14 -05006#include "run-command.h"
Nguyễn Thái Ngọc Duy6035d6a2013-05-26 08:16:15 +07007#include "commit.h"
Andreas Ericsson8e49d502005-11-16 00:31:25 +01008
Ramsay Allan Jones822a7d52006-07-30 22:42:25 +01009const char git_usage_string[] =
Nazri Ramliy44e1e4d2013-09-09 21:47:43 +080010 "git [--version] [--help] [-C <path>] [-c name=value]\n"
Kevin Bracey03a0fb02013-03-11 21:44:15 +020011 " [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]\n"
Josh Tripletta1bea2c2011-07-05 10:54:44 -070012 " [-p|--paginate|--no-pager] [--no-replace-objects] [--bare]\n"
13 " [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]\n"
Štěpán Němec62b46982010-10-08 19:31:15 +020014 " <command> [<args>]";
Ramsay Allan Jones822a7d52006-07-30 22:42:25 +010015
Teemu Likonenb7d96812008-06-06 00:15:36 +030016const char git_more_info_string[] =
Philip Oakley73903d02013-04-02 23:39:48 +010017 N_("'git help -a' and 'git help -g' lists available subcommands and some\n"
18 "concept guides. See 'git help <command>' or 'git help <concept>'\n"
19 "to read about a specific subcommand or concept.");
Teemu Likonenb7d96812008-06-06 00:15:36 +030020
Nguyễn Thái Ngọc Duye37c1322010-08-05 21:40:35 -050021static struct startup_info git_startup_info;
Jeff King4e107382008-07-03 07:46:57 -040022static int use_pager = -1;
Jeff King4e107382008-07-03 07:46:57 -040023
24static void commit_pager_choice(void) {
25 switch (use_pager) {
26 case 0:
27 setenv("GIT_PAGER", "cat", 1);
28 break;
29 case 1:
30 setup_pager();
31 break;
32 default:
33 break;
34 }
35}
36
Felipe Contreras4b25d092009-05-01 12:06:36 +030037static int handle_options(const char ***argv, int *argc, int *envchanged)
Johannes Schindelin4ab243a2006-07-24 14:10:45 +020038{
Junio C Hamano73546c02011-05-24 18:50:35 -040039 const char **orig_argv = *argv;
Johannes Schindelin4ab243a2006-07-24 14:10:45 +020040
41 while (*argc > 0) {
42 const char *cmd = (*argv)[0];
43 if (cmd[0] != '-')
44 break;
45
Johannes Schindelin6acbcb92006-07-25 20:24:22 +020046 /*
47 * For legacy reasons, the "version" and "help"
48 * commands can be written with "--" prepended
49 * to make them look like flags.
50 */
51 if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version"))
52 break;
53
54 /*
55 * Check remaining flags.
56 */
Junio C Hamanocc44c762007-02-20 01:53:29 -080057 if (!prefixcmp(cmd, "--exec-path")) {
Johannes Schindelin6acbcb92006-07-25 20:24:22 +020058 cmd += 11;
59 if (*cmd == '=')
Scott R Parish384df832007-10-27 01:36:51 -070060 git_set_argv_exec_path(cmd + 1);
Johannes Schindelin6acbcb92006-07-25 20:24:22 +020061 else {
62 puts(git_exec_path());
63 exit(0);
64 }
Markus Heidelberg89a56bf2009-04-05 04:15:16 +020065 } else if (!strcmp(cmd, "--html-path")) {
66 puts(system_path(GIT_HTML_PATH));
67 exit(0);
Jon Seymourf2dd8c32011-05-01 18:16:25 +100068 } else if (!strcmp(cmd, "--man-path")) {
69 puts(system_path(GIT_MAN_PATH));
70 exit(0);
71 } else if (!strcmp(cmd, "--info-path")) {
72 puts(system_path(GIT_INFO_PATH));
73 exit(0);
Johannes Schindelin6acbcb92006-07-25 20:24:22 +020074 } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) {
Jeff King4e107382008-07-03 07:46:57 -040075 use_pager = 1;
Matthieu Moy463a8492007-08-19 19:24:36 +020076 } else if (!strcmp(cmd, "--no-pager")) {
Jeff King4e107382008-07-03 07:46:57 -040077 use_pager = 0;
Matthieu Moy463a8492007-08-19 19:24:36 +020078 if (envchanged)
79 *envchanged = 1;
Christian Couderb0fa7ab2009-10-12 22:30:32 +020080 } else if (!strcmp(cmd, "--no-replace-objects")) {
81 read_replace_refs = 0;
Christian Couder6476b382009-11-18 07:50:58 +010082 setenv(NO_REPLACE_OBJECTS_ENVIRONMENT, "1", 1);
83 if (envchanged)
84 *envchanged = 1;
Johannes Schindelin6acbcb92006-07-25 20:24:22 +020085 } else if (!strcmp(cmd, "--git-dir")) {
Brian Gernhardtc321f002006-12-22 08:56:25 -050086 if (*argc < 2) {
87 fprintf(stderr, "No directory given for --git-dir.\n" );
88 usage(git_usage_string);
89 }
Shawn O. Pearce45b09792006-12-30 23:29:11 -050090 setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1);
Matthias Lederhofer4394efe2007-06-08 22:57:55 +020091 if (envchanged)
92 *envchanged = 1;
Johannes Schindelin6acbcb92006-07-25 20:24:22 +020093 (*argv)++;
94 (*argc)--;
Junio C Hamanocc44c762007-02-20 01:53:29 -080095 } else if (!prefixcmp(cmd, "--git-dir=")) {
Shawn O. Pearce45b09792006-12-30 23:29:11 -050096 setenv(GIT_DIR_ENVIRONMENT, cmd + 10, 1);
Matthias Lederhofer4394efe2007-06-08 22:57:55 +020097 if (envchanged)
98 *envchanged = 1;
Josh Tripletta1bea2c2011-07-05 10:54:44 -070099 } else if (!strcmp(cmd, "--namespace")) {
100 if (*argc < 2) {
101 fprintf(stderr, "No namespace given for --namespace.\n" );
102 usage(git_usage_string);
103 }
104 setenv(GIT_NAMESPACE_ENVIRONMENT, (*argv)[1], 1);
105 if (envchanged)
106 *envchanged = 1;
107 (*argv)++;
108 (*argc)--;
109 } else if (!prefixcmp(cmd, "--namespace=")) {
110 setenv(GIT_NAMESPACE_ENVIRONMENT, cmd + 12, 1);
111 if (envchanged)
112 *envchanged = 1;
Matthias Lederhofer892c41b2007-06-06 09:10:42 +0200113 } else if (!strcmp(cmd, "--work-tree")) {
114 if (*argc < 2) {
115 fprintf(stderr, "No directory given for --work-tree.\n" );
116 usage(git_usage_string);
117 }
118 setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1);
Matthias Lederhofer4394efe2007-06-08 22:57:55 +0200119 if (envchanged)
120 *envchanged = 1;
Matthias Lederhofer892c41b2007-06-06 09:10:42 +0200121 (*argv)++;
122 (*argc)--;
123 } else if (!prefixcmp(cmd, "--work-tree=")) {
124 setenv(GIT_WORK_TREE_ENVIRONMENT, cmd + 12, 1);
Matthias Lederhofer4394efe2007-06-08 22:57:55 +0200125 if (envchanged)
126 *envchanged = 1;
Johannes Schindelin6acbcb92006-07-25 20:24:22 +0200127 } else if (!strcmp(cmd, "--bare")) {
Shawn O. Pearceef5ddb22006-12-30 23:28:53 -0500128 static char git_dir[PATH_MAX+1];
Junio C Hamano6adcca32007-08-27 00:58:06 -0700129 is_bare_repository_cfg = 1;
Junio C Hamano9277d602007-08-27 22:41:23 -0700130 setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 0);
Jeff King2cd83d12013-03-08 04:32:22 -0500131 setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, "0", 1);
Matthias Lederhofer4394efe2007-06-08 22:57:55 +0200132 if (envchanged)
133 *envchanged = 1;
Alex Riesen8b1fa772010-03-26 23:53:57 +0100134 } else if (!strcmp(cmd, "-c")) {
135 if (*argc < 2) {
136 fprintf(stderr, "-c expects a configuration string\n" );
137 usage(git_usage_string);
138 }
Jeff King2b64fc82010-08-23 15:16:00 -0400139 git_config_push_parameter((*argv)[1]);
Alex Riesen8b1fa772010-03-26 23:53:57 +0100140 (*argv)++;
141 (*argc)--;
Jeff King823ab402012-12-19 17:37:30 -0500142 } else if (!strcmp(cmd, "--literal-pathspecs")) {
143 setenv(GIT_LITERAL_PATHSPECS_ENVIRONMENT, "1", 1);
144 if (envchanged)
145 *envchanged = 1;
146 } else if (!strcmp(cmd, "--no-literal-pathspecs")) {
147 setenv(GIT_LITERAL_PATHSPECS_ENVIRONMENT, "0", 1);
148 if (envchanged)
149 *envchanged = 1;
Nguyễn Thái Ngọc Duybd30c2e2013-07-14 15:36:08 +0700150 } else if (!strcmp(cmd, "--glob-pathspecs")) {
151 setenv(GIT_GLOB_PATHSPECS_ENVIRONMENT, "1", 1);
152 if (envchanged)
153 *envchanged = 1;
154 } else if (!strcmp(cmd, "--noglob-pathspecs")) {
155 setenv(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, "1", 1);
156 if (envchanged)
157 *envchanged = 1;
Nguyễn Thái Ngọc Duy93d93532013-07-14 15:36:09 +0700158 } else if (!strcmp(cmd, "--icase-pathspecs")) {
159 setenv(GIT_ICASE_PATHSPECS_ENVIRONMENT, "1", 1);
160 if (envchanged)
161 *envchanged = 1;
Nguyễn Thái Ngọc Duy6035d6a2013-05-26 08:16:15 +0700162 } else if (!strcmp(cmd, "--shallow-file")) {
163 (*argv)++;
164 (*argc)--;
165 set_alternate_shallow_file((*argv)[0]);
166 if (envchanged)
167 *envchanged = 1;
Nazri Ramliy44e1e4d2013-09-09 21:47:43 +0800168 } else if (!strcmp(cmd, "-C")) {
169 if (*argc < 2) {
170 fprintf(stderr, "No directory given for -C.\n" );
171 usage(git_usage_string);
172 }
173 if (chdir((*argv)[1]))
174 die_errno("Cannot change to '%s'", (*argv)[1]);
175 if (envchanged)
176 *envchanged = 1;
177 (*argv)++;
178 (*argc)--;
Johannes Schindelin6acbcb92006-07-25 20:24:22 +0200179 } else {
180 fprintf(stderr, "Unknown option: %s\n", cmd);
Ramsay Allan Jones822a7d52006-07-30 22:42:25 +0100181 usage(git_usage_string);
Johannes Schindelin6acbcb92006-07-25 20:24:22 +0200182 }
Johannes Schindelin4ab243a2006-07-24 14:10:45 +0200183
184 (*argv)++;
185 (*argc)--;
Johannes Schindelin4ab243a2006-07-24 14:10:45 +0200186 }
Junio C Hamano73546c02011-05-24 18:50:35 -0400187 return (*argv) - orig_argv;
Johannes Schindelin4ab243a2006-07-24 14:10:45 +0200188}
189
Johannes Schindelin2b11e312006-06-05 19:43:52 +0200190static int handle_alias(int *argcp, const char ***argv)
191{
SZEDER Gáboraf05d672008-03-25 22:06:26 +0100192 int envchanged = 0, ret = 0, saved_errno = errno;
Johannes Schindelin2b11e312006-06-05 19:43:52 +0200193 const char *subdir;
Matthias Lederhofer0347a8c2006-07-30 03:30:29 +0200194 int count, option_count;
Felipe Contreras4b25d092009-05-01 12:06:36 +0300195 const char **new_argv;
Jeff King94351112008-02-24 17:17:14 -0500196 const char *alias_command;
197 char *alias_string;
Junio C Hamanoe85dc0a2008-03-31 21:33:09 -0700198 int unused_nongit;
Johannes Schindelin2b11e312006-06-05 19:43:52 +0200199
Junio C Hamanoe85dc0a2008-03-31 21:33:09 -0700200 subdir = setup_git_directory_gently(&unused_nongit);
Johannes Schindelin2b11e312006-06-05 19:43:52 +0200201
Matthias Lederhofer0347a8c2006-07-30 03:30:29 +0200202 alias_command = (*argv)[0];
Jeff King94351112008-02-24 17:17:14 -0500203 alias_string = alias_lookup(alias_command);
Matthias Lederhofer0347a8c2006-07-30 03:30:29 +0200204 if (alias_string) {
Theodore Ts'odfd42a32007-02-10 19:33:58 -0500205 if (alias_string[0] == '!') {
Erik Faye-Lund7f51f8b2011-01-07 00:00:38 +0100206 const char **alias_argv;
207 int argc = *argcp, i;
Johannes Schindelina2f80282007-07-01 22:51:58 +0100208
Erik Faye-Lund7f51f8b2011-01-07 00:00:38 +0100209 commit_pager_choice();
210
211 /* build alias_argv */
212 alias_argv = xmalloc(sizeof(*alias_argv) * (argc + 1));
213 alias_argv[0] = alias_string + 1;
214 for (i = 1; i < argc; ++i)
215 alias_argv[i] = (*argv)[i];
216 alias_argv[argc] = NULL;
217
David Aguilar26b05252011-05-25 20:37:13 -0700218 ret = run_command_v_opt(alias_argv, RUN_USING_SHELL);
Erik Faye-Lund7f51f8b2011-01-07 00:00:38 +0100219 if (ret >= 0) /* normal exit */
220 exit(ret);
221
222 die_errno("While expanding alias '%s': '%s'",
223 alias_command, alias_string + 1);
Theodore Ts'odfd42a32007-02-10 19:33:58 -0500224 }
Matthias Lederhofer0347a8c2006-07-30 03:30:29 +0200225 count = split_cmdline(alias_string, &new_argv);
Deskin Millerdc4179f2008-09-22 11:06:41 -0400226 if (count < 0)
Greg Brockmanad9ac6d2010-08-07 01:13:39 -0400227 die("Bad alias.%s string: %s", alias_command,
228 split_cmdline_strerror(count));
Matthias Lederhofer4394efe2007-06-08 22:57:55 +0200229 option_count = handle_options(&new_argv, &count, &envchanged);
230 if (envchanged)
231 die("alias '%s' changes environment variables\n"
232 "You can use '!git' in the alias to do this.",
233 alias_command);
Matthias Lederhofer0347a8c2006-07-30 03:30:29 +0200234 memmove(new_argv - option_count, new_argv,
235 count * sizeof(char *));
236 new_argv -= option_count;
Johannes Schindelin2b11e312006-06-05 19:43:52 +0200237
Matthias Lederhofer0347a8c2006-07-30 03:30:29 +0200238 if (count < 1)
239 die("empty alias for %s", alias_command);
Johannes Schindelin2b11e312006-06-05 19:43:52 +0200240
Matthias Lederhofer0347a8c2006-07-30 03:30:29 +0200241 if (!strcmp(alias_command, new_argv[0]))
242 die("recursive alias: %s", alias_command);
Johannes Schindelin2b11e312006-06-05 19:43:52 +0200243
Christian Couderb319ce42007-12-03 05:51:50 +0100244 trace_argv_printf(new_argv,
Christian Couder6ce4e612006-09-02 18:23:48 +0200245 "trace: alias expansion: %s =>",
246 alias_command);
Matthias Lederhofer0347a8c2006-07-30 03:30:29 +0200247
Felipe Contreras4b25d092009-05-01 12:06:36 +0300248 new_argv = xrealloc(new_argv, sizeof(char *) *
Brandon Casey6167c132009-06-30 15:24:13 -0500249 (count + *argcp));
Matthias Lederhofer0347a8c2006-07-30 03:30:29 +0200250 /* insert after command name */
Felipe Contreras4b25d092009-05-01 12:06:36 +0300251 memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp);
Matthias Lederhofer0347a8c2006-07-30 03:30:29 +0200252
253 *argv = new_argv;
254 *argcp += count - 1;
255
256 ret = 1;
Johannes Schindelin2b11e312006-06-05 19:43:52 +0200257 }
258
Alex Riesen7be77de2008-12-05 01:36:46 +0100259 if (subdir && chdir(subdir))
Thomas Rastd824cbb2009-06-27 17:58:46 +0200260 die_errno("Cannot change to '%s'", subdir);
Johannes Schindelin2b11e312006-06-05 19:43:52 +0200261
Johannes Schindelin47e5c0c2006-06-28 12:45:27 +0200262 errno = saved_errno;
263
Johannes Schindelin2b11e312006-06-05 19:43:52 +0200264 return ret;
265}
266
Nguyễn Thái Ngọc Duyee38dfb2010-08-05 21:52:16 -0500267#define RUN_SETUP (1<<0)
268#define RUN_SETUP_GENTLY (1<<1)
269#define USE_PAGER (1<<2)
Shawn O. Pearce7eff28a2006-12-30 23:32:38 -0500270/*
271 * require working tree to be present -- anything uses this needs
272 * RUN_SETUP for reading from the configuration file.
273 */
Nguyễn Thái Ngọc Duyee38dfb2010-08-05 21:52:16 -0500274#define NEED_WORK_TREE (1<<3)
Linus Torvaldsa633fca2006-07-28 22:44:25 -0700275
Linus Torvalds47d0b4f2007-06-24 10:10:40 -0700276struct cmd_struct {
277 const char *cmd;
278 int (*fn)(int, const char **, const char *);
279 int option;
280};
281
Jeff Kingf172f332009-01-28 02:33:53 -0500282static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
Linus Torvalds47d0b4f2007-06-24 10:10:40 -0700283{
Jonathan Nieder99caeed2009-11-09 09:05:01 -0600284 int status, help;
Linus Torvalds0f157312007-06-24 10:29:33 -0700285 struct stat st;
Linus Torvalds47d0b4f2007-06-24 10:10:40 -0700286 const char *prefix;
287
288 prefix = NULL;
Jonathan Nieder99caeed2009-11-09 09:05:01 -0600289 help = argc == 2 && !strcmp(argv[1], "-h");
290 if (!help) {
291 if (p->option & RUN_SETUP)
292 prefix = setup_git_directory();
Nguyễn Thái Ngọc Duyee38dfb2010-08-05 21:52:16 -0500293 if (p->option & RUN_SETUP_GENTLY) {
294 int nongit_ok;
295 prefix = setup_git_directory_gently(&nongit_ok);
296 }
Jeff King4e107382008-07-03 07:46:57 -0400297
Nguyễn Thái Ngọc Duyee38dfb2010-08-05 21:52:16 -0500298 if (use_pager == -1 && p->option & (RUN_SETUP | RUN_SETUP_GENTLY))
Jonathan Nieder99caeed2009-11-09 09:05:01 -0600299 use_pager = check_pager_config(p->cmd);
300 if (use_pager == -1 && p->option & USE_PAGER)
301 use_pager = 1;
Nguyễn Thái Ngọc Duya9ca8a82010-11-26 22:31:57 +0700302
303 if ((p->option & (RUN_SETUP | RUN_SETUP_GENTLY)) &&
304 startup_info->have_repository) /* get_git_dir() may set up repo, avoid that */
305 trace_repo_setup(prefix);
Jonathan Nieder99caeed2009-11-09 09:05:01 -0600306 }
Jeff King4e107382008-07-03 07:46:57 -0400307 commit_pager_choice();
308
Jonathan Nieder99caeed2009-11-09 09:05:01 -0600309 if (!help && p->option & NEED_WORK_TREE)
Mike Hommey59f0f2f2007-11-03 12:23:11 +0100310 setup_work_tree();
311
Christian Couderb319ce42007-12-03 05:51:50 +0100312 trace_argv_printf(argv, "trace: built-in: git");
Linus Torvalds47d0b4f2007-06-24 10:10:40 -0700313
Linus Torvalds0f157312007-06-24 10:29:33 -0700314 status = p->fn(argc, argv, prefix);
315 if (status)
Johannes Sixt47e3de02009-07-05 20:57:46 +0200316 return status;
Linus Torvalds0f157312007-06-24 10:29:33 -0700317
318 /* Somebody closed stdout? */
319 if (fstat(fileno(stdout), &st))
320 return 0;
321 /* Ignore write errors for pipes and sockets.. */
322 if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode))
323 return 0;
324
325 /* Check for ENOSPC and EIO errors.. */
Linus Torvalds0227f982007-06-30 11:44:20 -0700326 if (fflush(stdout))
Thomas Rastd824cbb2009-06-27 17:58:46 +0200327 die_errno("write failure on standard output");
Linus Torvalds0227f982007-06-30 11:44:20 -0700328 if (ferror(stdout))
329 die("unknown write failure on standard output");
330 if (fclose(stdout))
Thomas Rastd824cbb2009-06-27 17:58:46 +0200331 die_errno("close failed on standard output");
Linus Torvalds0f157312007-06-24 10:29:33 -0700332 return 0;
Linus Torvalds47d0b4f2007-06-24 10:10:40 -0700333}
334
335static void handle_internal_command(int argc, const char **argv)
Linus Torvalds231af832006-02-26 12:34:51 -0800336{
337 const char *cmd = argv[0];
Linus Torvalds47d0b4f2007-06-24 10:10:40 -0700338 static struct cmd_struct commands[] = {
Matthias Lederhofer7ae3df82007-06-03 16:48:16 +0200339 { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE },
Andrew Ruderd97bc5d2007-07-04 17:21:49 -0500340 { "annotate", cmd_annotate, RUN_SETUP },
Nguyễn Thái Ngọc Duyd1ea8962010-08-16 10:36:12 +1000341 { "apply", cmd_apply, RUN_SETUP_GENTLY },
René Scharfe265d5282007-04-05 22:55:43 +0200342 { "archive", cmd_archive },
Jon Seymour24c51282011-08-09 12:11:54 +1000343 { "bisect--helper", cmd_bisect__helper, RUN_SETUP },
Ren,Ai(B Scharfe4f0219a2007-01-28 15:25:55 +0100344 { "blame", cmd_blame, RUN_SETUP },
Junio C Hamano1da1b3a2006-11-01 12:53:13 -0800345 { "branch", cmd_branch, RUN_SETUP },
Nguyễn Thái Ngọc Duy2cb60092010-08-05 22:12:46 -0500346 { "bundle", cmd_bundle, RUN_SETUP_GENTLY },
Junio C Hamanoefffea02006-08-04 02:04:00 -0700347 { "cat-file", cmd_cat_file, RUN_SETUP },
Nguyễn Thái Ngọc Duyef5dd8a2011-02-15 10:09:03 +0700348 { "check-attr", cmd_check_attr, RUN_SETUP },
Adam Spiers368aa522013-01-06 16:58:13 +0000349 { "check-ignore", cmd_check_ignore, RUN_SETUP | NEED_WORK_TREE },
Eric Sunshine226ad342013-07-12 20:53:10 -0400350 { "check-mailmap", cmd_check_mailmap, RUN_SETUP },
Nguyễn Thái Ngọc Duyef5dd8a2011-02-15 10:09:03 +0700351 { "check-ref-format", cmd_check_ref_format },
Daniel Barkalow782c2d62008-02-07 11:40:23 -0500352 { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE },
Johannes Schindelin4465f412007-08-04 23:20:07 +0100353 { "checkout-index", cmd_checkout_index,
354 RUN_SETUP | NEED_WORK_TREE},
Rene Scharfee8276332006-10-24 01:01:57 +0200355 { "cherry", cmd_cherry, RUN_SETUP },
Matthias Lederhofer7ae3df82007-06-03 16:48:16 +0200356 { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE },
Shawn Bohrer113f10f2007-11-11 19:48:47 -0600357 { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE },
Nguyễn Thái Ngọc Duyef5dd8a2011-02-15 10:09:03 +0700358 { "clone", cmd_clone },
Nguyễn Thái Ngọc Duy7e29b822012-04-21 11:44:32 +0700359 { "column", cmd_column, RUN_SETUP_GENTLY },
Kristian Høgsbergf5bbc322007-11-08 11:59:00 -0500360 { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE },
Junio C Hamanoefffea02006-08-04 02:04:00 -0700361 { "commit-tree", cmd_commit_tree, RUN_SETUP },
Nguyễn Thái Ngọc Duy3ba7e6e2010-08-05 22:15:09 -0500362 { "config", cmd_config, RUN_SETUP_GENTLY },
Dmitry V. Levin81128942006-09-14 05:03:59 +0400363 { "count-objects", cmd_count_objects, RUN_SETUP },
Javier Roucher Iglesiase30b2fe2012-06-24 13:39:59 +0200364 { "credential", cmd_credential, RUN_SETUP_GENTLY },
Shawn O. Pearce9a0eaf82007-01-10 06:36:36 -0500365 { "describe", cmd_describe, RUN_SETUP },
René Scharfe89d07f72007-08-12 19:46:55 +0200366 { "diff", cmd_diff },
Nguyễn Thái Ngọc Duy4f38f6b2008-08-28 20:02:12 +0700367 { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE },
Junio C Hamanoefffea02006-08-04 02:04:00 -0700368 { "diff-index", cmd_diff_index, RUN_SETUP },
Junio C Hamanoefffea02006-08-04 02:04:00 -0700369 { "diff-tree", cmd_diff_tree, RUN_SETUP },
Johannes Schindelinf2dc8492007-12-02 14:14:13 +0000370 { "fast-export", cmd_fast_export, RUN_SETUP },
Daniel Barkalowb888d612007-09-10 23:03:25 -0400371 { "fetch", cmd_fetch, RUN_SETUP },
Daniel Barkalow2d4177c2007-09-10 23:03:00 -0400372 { "fetch-pack", cmd_fetch_pack, RUN_SETUP },
Junio C Hamanoefffea02006-08-04 02:04:00 -0700373 { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP },
Junio C Hamano9f613dd2006-09-15 13:30:02 -0700374 { "for-each-ref", cmd_for_each_ref, RUN_SETUP },
Junio C Hamanoefffea02006-08-04 02:04:00 -0700375 { "format-patch", cmd_format_patch, RUN_SETUP },
Mark Woodingb4dfefe2007-01-29 15:48:06 +0000376 { "fsck", cmd_fsck, RUN_SETUP },
377 { "fsck-objects", cmd_fsck, RUN_SETUP },
James Bowes6757ada2007-03-13 21:58:22 -0400378 { "gc", cmd_gc, RUN_SETUP },
Junio C Hamanof754fa92006-08-04 01:51:04 -0700379 { "get-tar-commit-id", cmd_get_tar_commit_id },
Nguyễn Thái Ngọc Duyff38d1a2010-08-05 22:06:39 -0500380 { "grep", cmd_grep, RUN_SETUP_GENTLY },
Linus Torvaldsb28a1ce2010-01-21 19:50:11 -0800381 { "hash-object", cmd_hash_object },
Junio C Hamanof754fa92006-08-04 01:51:04 -0700382 { "help", cmd_help },
Nguyễn Thái Ngọc Duye0fce072010-08-05 22:18:53 -0500383 { "index-pack", cmd_index_pack, RUN_SETUP_GENTLY },
Nicolas Pitre515377e2007-01-07 12:31:29 -0500384 { "init", cmd_init_db },
Junio C Hamanof754fa92006-08-04 01:51:04 -0700385 { "init-db", cmd_init_db },
Linus Torvalds1fda91b2010-08-24 10:33:59 -0700386 { "log", cmd_log, RUN_SETUP },
Junio C Hamanoefffea02006-08-04 02:04:00 -0700387 { "ls-files", cmd_ls_files, RUN_SETUP },
Nguyễn Thái Ngọc Duyf0ef6a62010-08-05 22:20:08 -0500388 { "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY },
Nguyễn Thái Ngọc Duyef5dd8a2011-02-15 10:09:03 +0700389 { "ls-tree", cmd_ls_tree, RUN_SETUP },
Junio C Hamanof754fa92006-08-04 01:51:04 -0700390 { "mailinfo", cmd_mailinfo },
391 { "mailsplit", cmd_mailsplit },
Miklos Vajna1c7b76b2008-07-07 19:24:20 +0200392 { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE },
Junio C Hamano71dfbf22007-01-09 00:50:02 -0800393 { "merge-base", cmd_merge_base, RUN_SETUP },
Nguyễn Thái Ngọc Duy3668d422010-08-05 22:27:43 -0500394 { "merge-file", cmd_merge_file, RUN_SETUP_GENTLY },
Linus Torvalds0ecace72010-01-22 07:29:21 -0800395 { "merge-index", cmd_merge_index, RUN_SETUP },
Thomas Harninga00a42a2007-11-22 15:19:40 -0500396 { "merge-ours", cmd_merge_ours, RUN_SETUP },
Daniel Barkalowe1b3a2c2008-02-07 11:40:05 -0500397 { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
Avery Pennarun8cc5b292009-11-25 21:23:55 -0500398 { "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
399 { "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
Junio C Hamano17368552008-02-23 11:08:25 -0800400 { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE },
Linus Torvalds907a7cb2010-01-21 18:25:20 -0800401 { "merge-tree", cmd_merge_tree, RUN_SETUP },
Linus Torvalds112dd512010-01-22 07:34:44 -0800402 { "mktag", cmd_mktag, RUN_SETUP },
Junio C Hamano633e3552009-05-10 10:28:18 -0700403 { "mktree", cmd_mktree, RUN_SETUP },
Matthias Lederhofer7ae3df82007-06-03 16:48:16 +0200404 { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE },
Junio C Hamanoefffea02006-08-04 02:04:00 -0700405 { "name-rev", cmd_name_rev, RUN_SETUP },
Johan Herlandcd067d32010-02-13 22:28:20 +0100406 { "notes", cmd_notes, RUN_SETUP },
Junio C Hamanoefffea02006-08-04 02:04:00 -0700407 { "pack-objects", cmd_pack_objects, RUN_SETUP },
Linus Torvalds377d0272010-01-22 07:42:14 -0800408 { "pack-redundant", cmd_pack_redundant, RUN_SETUP },
Nguyễn Thái Ngọc Duyef5dd8a2011-02-15 10:09:03 +0700409 { "pack-refs", cmd_pack_refs, RUN_SETUP },
Linus Torvaldsdedc0ec2010-01-21 20:31:25 -0800410 { "patch-id", cmd_patch_id },
Nguyễn Thái Ngọc Duyf0ef6a62010-08-05 22:20:08 -0500411 { "peek-remote", cmd_ls_remote, RUN_SETUP_GENTLY },
Andrew Ruderd97bc5d2007-07-04 17:21:49 -0500412 { "pickaxe", cmd_blame, RUN_SETUP },
Junio C Hamanoefffea02006-08-04 02:04:00 -0700413 { "prune", cmd_prune, RUN_SETUP },
414 { "prune-packed", cmd_prune_packed, RUN_SETUP },
Junio C Hamano102cb082006-08-08 15:42:20 -0700415 { "push", cmd_push, RUN_SETUP },
Junio C Hamanoefffea02006-08-04 02:04:00 -0700416 { "read-tree", cmd_read_tree, RUN_SETUP },
Junio C Hamanobe5908a2008-09-09 01:27:08 -0700417 { "receive-pack", cmd_receive_pack },
Junio C Hamano4264dc12006-12-19 00:23:12 -0800418 { "reflog", cmd_reflog, RUN_SETUP },
Johannes Schindelin211c8962008-02-29 01:45:45 +0000419 { "remote", cmd_remote, RUN_SETUP },
Ilari Liusvaara7f3eceb2010-10-12 19:39:43 +0300420 { "remote-ext", cmd_remote_ext },
Ilari Liusvaara3a9ed4b2010-10-12 19:39:42 +0300421 { "remote-fd", cmd_remote_fd },
Stefan Bellera1bbc6c2013-09-15 17:33:20 +0200422 { "repack", cmd_repack, RUN_SETUP },
Christian Couder54b0c1e2009-02-02 06:12:44 +0100423 { "replace", cmd_replace, RUN_SETUP },
René Scharfe6390c902011-02-12 14:24:10 +0100424 { "repo-config", cmd_repo_config, RUN_SETUP_GENTLY },
Johannes Schindelin658f3652006-12-20 17:39:41 +0100425 { "rerere", cmd_rerere, RUN_SETUP },
Carlos Rica0e5a7fa2007-09-11 05:19:34 +0200426 { "reset", cmd_reset, RUN_SETUP },
Junio C Hamanoefffea02006-08-04 02:04:00 -0700427 { "rev-list", cmd_rev_list, RUN_SETUP },
Junio C Hamano5410a022007-11-06 12:23:14 -0800428 { "rev-parse", cmd_rev_parse },
Matthias Lederhofer7ae3df82007-06-03 16:48:16 +0200429 { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE },
Mike Hommey271bb082007-11-03 12:23:13 +0100430 { "rm", cmd_rm, RUN_SETUP },
Daniel Barkalow96249c02007-10-29 22:03:39 -0400431 { "send-pack", cmd_send_pack, RUN_SETUP },
Nguyễn Thái Ngọc Duy773b69b2010-08-05 22:01:37 -0500432 { "shortlog", cmd_shortlog, RUN_SETUP_GENTLY | USE_PAGER },
Linus Torvalds1fda91b2010-08-24 10:33:59 -0700433 { "show", cmd_show, RUN_SETUP },
Nguyễn Thái Ngọc Duyef5dd8a2011-02-15 10:09:03 +0700434 { "show-branch", cmd_show_branch, RUN_SETUP },
435 { "show-ref", cmd_show_ref, RUN_SETUP },
436 { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE },
Junio C Hamano10762322008-07-21 19:41:17 -0700437 { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE },
Junio C Hamanof754fa92006-08-04 01:51:04 -0700438 { "stripspace", cmd_stripspace },
Junio C Hamanoefffea02006-08-04 02:04:00 -0700439 { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP },
Carlos Rica62e09ce2007-07-20 01:42:28 +0200440 { "tag", cmd_tag, RUN_SETUP },
Rene Scharfe9cb90b82006-10-08 15:44:50 +0200441 { "tar-tree", cmd_tar_tree },
Linus Torvaldsb5325812010-01-22 07:38:03 -0800442 { "unpack-file", cmd_unpack_file, RUN_SETUP },
Junio C Hamanoefffea02006-08-04 02:04:00 -0700443 { "unpack-objects", cmd_unpack_objects, RUN_SETUP },
444 { "update-index", cmd_update_index, RUN_SETUP },
445 { "update-ref", cmd_update_ref, RUN_SETUP },
René Scharfe53a11162009-08-29 11:04:52 +0200446 { "update-server-info", cmd_update_server_info, RUN_SETUP },
Franck Bui-Huu39345a22006-09-07 15:12:05 +0200447 { "upload-archive", cmd_upload_archive },
Jeff King1bc01ef2011-11-19 02:40:04 -0500448 { "upload-archive--writer", cmd_upload_archive_writer },
Nguyễn Thái Ngọc Duy2bc8c1a2010-08-05 22:21:40 -0500449 { "var", cmd_var, RUN_SETUP_GENTLY },
Nguyễn Thái Ngọc Duyef5dd8a2011-02-15 10:09:03 +0700450 { "verify-pack", cmd_verify_pack },
Carlos Rica2ae68fc2007-07-27 06:07:34 +0200451 { "verify-tag", cmd_verify_tag, RUN_SETUP },
Junio C Hamanof754fa92006-08-04 01:51:04 -0700452 { "version", cmd_version },
Linus Torvalds1fda91b2010-08-24 10:33:59 -0700453 { "whatchanged", cmd_whatchanged, RUN_SETUP },
Junio C Hamanoefffea02006-08-04 02:04:00 -0700454 { "write-tree", cmd_write_tree, RUN_SETUP },
Linus Torvalds231af832006-02-26 12:34:51 -0800455 };
456 int i;
Johannes Sixt23326d12007-12-08 20:57:25 +0100457 static const char ext[] = STRIP_EXTENSION;
458
459 if (sizeof(ext) > 1) {
460 i = strlen(argv[0]) - strlen(ext);
461 if (i > 0 && !strcmp(argv[0] + i, ext)) {
Dotan Barake8eec712008-09-09 21:57:10 +0300462 char *argv0 = xstrdup(argv[0]);
Johannes Sixt23326d12007-12-08 20:57:25 +0100463 argv[0] = cmd = argv0;
464 argv0[i] = '\0';
465 }
466 }
Linus Torvalds231af832006-02-26 12:34:51 -0800467
Linus Torvalds1cd95082006-04-15 11:13:49 -0700468 /* Turn "git cmd --help" into "git help cmd" */
469 if (argc > 1 && !strcmp(argv[1], "--help")) {
470 argv[1] = argv[0];
471 argv[0] = cmd = "help";
472 }
473
Linus Torvalds231af832006-02-26 12:34:51 -0800474 for (i = 0; i < ARRAY_SIZE(commands); i++) {
475 struct cmd_struct *p = commands+i;
476 if (strcmp(p->cmd, cmd))
477 continue;
Jeff Kingf172f332009-01-28 02:33:53 -0500478 exit(run_builtin(p, argc, argv));
Linus Torvalds231af832006-02-26 12:34:51 -0800479 }
480}
481
Junio C Hamano7550be02007-12-01 22:09:22 -0800482static void execv_dashed_external(const char **argv)
483{
Brandon Caseyf285a2d2008-10-09 14:12:12 -0500484 struct strbuf cmd = STRBUF_INIT;
Junio C Hamano7550be02007-12-01 22:09:22 -0800485 const char *tmp;
Jeff Kingd8e96fd2009-01-28 02:38:14 -0500486 int status;
Junio C Hamano7550be02007-12-01 22:09:22 -0800487
Jeff King92058e42011-08-18 15:01:32 -0700488 if (use_pager == -1)
489 use_pager = check_pager_config(argv[0]);
Jonathan Nieder030149a2010-07-14 17:55:12 -0500490 commit_pager_choice();
491
Junio C Hamano7550be02007-12-01 22:09:22 -0800492 strbuf_addf(&cmd, "git-%s", argv[0]);
493
494 /*
495 * argv[0] must be the git command, but the argv array
496 * belongs to the caller, and may be reused in
497 * subsequent loop iterations. Save argv[0] and
498 * restore it on error.
499 */
500 tmp = argv[0];
501 argv[0] = cmd.buf;
502
503 trace_argv_printf(argv, "trace: exec:");
504
Jeff Kingd8e96fd2009-01-28 02:38:14 -0500505 /*
506 * if we fail because the command is not found, it is
507 * OK to return. Otherwise, we just pass along the status code.
508 */
Clemens Buchacher10c6cdd2012-01-08 21:41:09 +0100509 status = run_command_v_opt(argv, RUN_SILENT_EXEC_FAILURE | RUN_CLEAN_ON_EXIT);
Johannes Sixt0ac77ec2009-07-04 21:26:40 +0200510 if (status >= 0 || errno != ENOENT)
Johannes Sixt5709e032009-07-04 21:26:39 +0200511 exit(status);
Junio C Hamano7550be02007-12-01 22:09:22 -0800512
513 argv[0] = tmp;
514
515 strbuf_release(&cmd);
516}
517
Adeodato Simóa907e1b2009-01-04 18:16:01 +0100518static int run_argv(int *argcp, const char ***argv)
519{
520 int done_alias = 0;
521
522 while (1) {
523 /* See if it's an internal command */
524 handle_internal_command(*argcp, *argv);
525
526 /* .. then try the external ones */
527 execv_dashed_external(*argv);
528
529 /* It could be an alias -- this works around the insanity
530 * of overriding "git log" with "git show" by having
531 * alias.log = show
532 */
533 if (done_alias || !handle_alias(argcp, argv))
534 break;
535 done_alias = 1;
536 }
537
538 return done_alias;
539}
540
Junio C Hamano7550be02007-12-01 22:09:22 -0800541
Ramsay Jones84d32bf2013-04-27 20:19:47 +0100542int main(int argc, char **av)
Andreas Ericsson8e49d502005-11-16 00:31:25 +0100543{
Ramsay Jones84d32bf2013-04-27 20:19:47 +0100544 const char **argv = (const char **) av;
Steve Haslam4dd47c32009-01-18 13:00:10 +0100545 const char *cmd;
Andreas Ericsson8e49d502005-11-16 00:31:25 +0100546
Nguyễn Thái Ngọc Duye37c1322010-08-05 21:40:35 -0500547 startup_info = &git_startup_info;
548
Steffen Prohaska2cd72b02009-01-18 13:00:11 +0100549 cmd = git_extract_argv0_path(argv[0]);
550 if (!cmd)
Steve Haslam4dd47c32009-01-18 13:00:10 +0100551 cmd = "git-help";
Andreas Ericsson8e49d502005-11-16 00:31:25 +0100552
Thomas Rasta11c3962013-07-16 11:27:37 +0200553 /*
554 * Always open file descriptors 0/1/2 to avoid clobbering files
555 * in die(). It also avoids messing up when the pipes are dup'ed
556 * onto stdin/stdout/stderr in the child processes we spawn.
557 */
558 sanitize_stdfds();
559
Ævar Arnfjörð Bjarmason5e9637c2011-11-18 00:14:42 +0100560 git_setup_gettext();
561
Linus Torvalds231af832006-02-26 12:34:51 -0800562 /*
563 * "git-xxxx" is the same as "git xxxx", but we obviously:
564 *
565 * - cannot take flags in between the "git" and the "xxxx".
566 * - cannot execute it externally (since it would just do
567 * the same thing over again)
568 *
569 * So we just directly call the internal command handler, and
570 * die if that one cannot handle it.
571 */
Junio C Hamanocc44c762007-02-20 01:53:29 -0800572 if (!prefixcmp(cmd, "git-")) {
Linus Torvalds231af832006-02-26 12:34:51 -0800573 cmd += 4;
574 argv[0] = cmd;
Linus Torvalds47d0b4f2007-06-24 10:10:40 -0700575 handle_internal_command(argc, argv);
Linus Torvalds231af832006-02-26 12:34:51 -0800576 die("cannot handle %s internally", cmd);
577 }
Andreas Ericsson8e49d502005-11-16 00:31:25 +0100578
Linus Torvalds231af832006-02-26 12:34:51 -0800579 /* Look for flags.. */
Johannes Schindelin6acbcb92006-07-25 20:24:22 +0200580 argv++;
581 argc--;
Matthias Lederhofer4394efe2007-06-08 22:57:55 +0200582 handle_options(&argv, &argc, NULL);
Johannes Schindelin6acbcb92006-07-25 20:24:22 +0200583 if (argc > 0) {
Junio C Hamanocc44c762007-02-20 01:53:29 -0800584 if (!prefixcmp(argv[0], "--"))
Johannes Schindelin6acbcb92006-07-25 20:24:22 +0200585 argv[0] += 2;
586 } else {
Scott R Parish3d7e2d82007-10-27 01:36:49 -0700587 /* The user didn't specify a command; give them help */
Nguyễn Thái Ngọc Duy73e25e72010-06-26 14:26:37 -0500588 commit_pager_choice();
Scott R Parish3d7e2d82007-10-27 01:36:49 -0700589 printf("usage: %s\n\n", git_usage_string);
590 list_common_cmds_help();
Kevin Bracey421a9762013-03-10 17:10:20 +0200591 printf("\n%s\n", _(git_more_info_string));
Scott R Parish3d7e2d82007-10-27 01:36:49 -0700592 exit(1);
Andreas Ericsson8e49d502005-11-16 00:31:25 +0100593 }
Johannes Schindelin6acbcb92006-07-25 20:24:22 +0200594 cmd = argv[0];
Andreas Ericsson8e49d502005-11-16 00:31:25 +0100595
Linus Torvalds231af832006-02-26 12:34:51 -0800596 /*
Scott R Parish511707d2007-10-28 04:17:20 -0700597 * We use PATH to find git commands, but we prepend some higher
Mike Ralphson3ea3c212009-04-17 19:13:30 +0100598 * precedence paths: the "--exec-path" option, the GIT_EXEC_PATH
Scott R Parish511707d2007-10-28 04:17:20 -0700599 * environment, and the $(gitexecdir) from the Makefile at build
600 * time.
Linus Torvalds231af832006-02-26 12:34:51 -0800601 */
Johannes Sixte1464ca2008-07-21 21:19:52 +0200602 setup_path();
Junio C Hamano7dbc2c02005-11-15 23:13:30 -0800603
Junio C Hamanoa0254632006-06-05 18:09:40 -0700604 while (1) {
Adeodato Simóa907e1b2009-01-04 18:16:01 +0100605 static int done_help = 0;
606 static int was_alias = 0;
607 was_alias = run_argv(&argc, &argv);
608 if (errno != ENOENT)
Junio C Hamanoa0254632006-06-05 18:09:40 -0700609 break;
Adeodato Simóa907e1b2009-01-04 18:16:01 +0100610 if (was_alias) {
Theodore Ts'of3dd0152007-02-10 19:33:57 -0500611 fprintf(stderr, "Expansion of alias '%s' failed; "
Pete Harlan7283bbc2010-02-15 15:33:18 -0800612 "'%s' is not a git command\n",
Theodore Ts'of3dd0152007-02-10 19:33:57 -0500613 cmd, argv[0]);
614 exit(1);
615 }
Adeodato Simóa907e1b2009-01-04 18:16:01 +0100616 if (!done_help) {
617 cmd = argv[0] = help_unknown_cmd(cmd);
618 done_help = 1;
619 } else
620 break;
Theodore Ts'of3dd0152007-02-10 19:33:57 -0500621 }
Alex Riesen10b15b82005-12-01 13:48:35 +0100622
623 fprintf(stderr, "Failed to run command '%s': %s\n",
Andreas Ericsson33ebb872006-06-28 02:17:21 -0700624 cmd, strerror(errno));
Andreas Ericsson8e49d502005-11-16 00:31:25 +0100625
626 return 1;
627}