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Commit | Line | Data |
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85023577 | 1 | #include "builtin.h" |
b2141fc1 | 2 | #include "config.h" |
fd5c363d TF |
3 | #include "exec_cmd.h" |
4 | #include "help.h" | |
d8e96fd8 | 5 | #include "run-command.h" |
8e49d503 | 6 | |
822a7d50 | 7 | const char git_usage_string[] = |
44e1e4d6 | 8 | "git [--version] [--help] [-C <path>] [-c name=value]\n" |
03a0fb0c | 9 | " [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]\n" |
9c9b4f2f | 10 | " [-p | --paginate | --no-pager] [--no-replace-objects] [--bare]\n" |
a1bea2c1 | 11 | " [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]\n" |
62b4698e | 12 | " <command> [<args>]"; |
822a7d50 | 13 | |
b7d96819 | 14 | const char git_more_info_string[] = |
ad5fe377 | 15 | N_("'git help -a' and 'git help -g' list available subcommands and some\n" |
73903d0b PO |
16 | "concept guides. See 'git help <command>' or 'git help <concept>'\n" |
17 | "to read about a specific subcommand or concept."); | |
b7d96819 | 18 | |
4e10738a | 19 | static int use_pager = -1; |
c0562611 | 20 | |
8893fd95 JK |
21 | static void list_builtins(void); |
22 | ||
4e10738a JK |
23 | static void commit_pager_choice(void) { |
24 | switch (use_pager) { | |
25 | case 0: | |
26 | setenv("GIT_PAGER", "cat", 1); | |
27 | break; | |
28 | case 1: | |
29 | setup_pager(); | |
30 | break; | |
31 | default: | |
32 | break; | |
33 | } | |
34 | } | |
35 | ||
4b25d091 | 36 | static int handle_options(const char ***argv, int *argc, int *envchanged) |
4ab243a9 | 37 | { |
73546c08 | 38 | const char **orig_argv = *argv; |
4ab243a9 JS |
39 | |
40 | while (*argc > 0) { | |
41 | const char *cmd = (*argv)[0]; | |
42 | if (cmd[0] != '-') | |
43 | break; | |
44 | ||
6acbcb92 JS |
45 | /* |
46 | * For legacy reasons, the "version" and "help" | |
47 | * commands can be written with "--" prepended | |
48 | * to make them look like flags. | |
49 | */ | |
50 | if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version")) | |
51 | break; | |
52 | ||
53 | /* | |
54 | * Check remaining flags. | |
55 | */ | |
ae021d87 | 56 | if (skip_prefix(cmd, "--exec-path", &cmd)) { |
6acbcb92 | 57 | if (*cmd == '=') |
384df833 | 58 | git_set_argv_exec_path(cmd + 1); |
6acbcb92 JS |
59 | else { |
60 | puts(git_exec_path()); | |
61 | exit(0); | |
62 | } | |
89a56bfb MH |
63 | } else if (!strcmp(cmd, "--html-path")) { |
64 | puts(system_path(GIT_HTML_PATH)); | |
65 | exit(0); | |
f2dd8c37 JS |
66 | } else if (!strcmp(cmd, "--man-path")) { |
67 | puts(system_path(GIT_MAN_PATH)); | |
68 | exit(0); | |
69 | } else if (!strcmp(cmd, "--info-path")) { | |
70 | puts(system_path(GIT_INFO_PATH)); | |
71 | exit(0); | |
6acbcb92 | 72 | } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) { |
4e10738a | 73 | use_pager = 1; |
463a849d | 74 | } else if (!strcmp(cmd, "--no-pager")) { |
4e10738a | 75 | use_pager = 0; |
463a849d MM |
76 | if (envchanged) |
77 | *envchanged = 1; | |
b0fa7ab5 | 78 | } else if (!strcmp(cmd, "--no-replace-objects")) { |
afc711b8 | 79 | check_replace_refs = 0; |
6476b38b CC |
80 | setenv(NO_REPLACE_OBJECTS_ENVIRONMENT, "1", 1); |
81 | if (envchanged) | |
82 | *envchanged = 1; | |
6acbcb92 | 83 | } else if (!strcmp(cmd, "--git-dir")) { |
c321f00d BG |
84 | if (*argc < 2) { |
85 | fprintf(stderr, "No directory given for --git-dir.\n" ); | |
86 | usage(git_usage_string); | |
87 | } | |
45b09794 | 88 | setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1); |
4394efec ML |
89 | if (envchanged) |
90 | *envchanged = 1; | |
6acbcb92 JS |
91 | (*argv)++; |
92 | (*argc)--; | |
ae021d87 JK |
93 | } else if (skip_prefix(cmd, "--git-dir=", &cmd)) { |
94 | setenv(GIT_DIR_ENVIRONMENT, cmd, 1); | |
4394efec ML |
95 | if (envchanged) |
96 | *envchanged = 1; | |
a1bea2c1 JT |
97 | } else if (!strcmp(cmd, "--namespace")) { |
98 | if (*argc < 2) { | |
99 | fprintf(stderr, "No namespace given for --namespace.\n" ); | |
100 | usage(git_usage_string); | |
101 | } | |
102 | setenv(GIT_NAMESPACE_ENVIRONMENT, (*argv)[1], 1); | |
103 | if (envchanged) | |
104 | *envchanged = 1; | |
105 | (*argv)++; | |
106 | (*argc)--; | |
ae021d87 JK |
107 | } else if (skip_prefix(cmd, "--namespace=", &cmd)) { |
108 | setenv(GIT_NAMESPACE_ENVIRONMENT, cmd, 1); | |
a1bea2c1 JT |
109 | if (envchanged) |
110 | *envchanged = 1; | |
892c41b9 ML |
111 | } else if (!strcmp(cmd, "--work-tree")) { |
112 | if (*argc < 2) { | |
113 | fprintf(stderr, "No directory given for --work-tree.\n" ); | |
114 | usage(git_usage_string); | |
115 | } | |
116 | setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1); | |
4394efec ML |
117 | if (envchanged) |
118 | *envchanged = 1; | |
892c41b9 ML |
119 | (*argv)++; |
120 | (*argc)--; | |
ae021d87 JK |
121 | } else if (skip_prefix(cmd, "--work-tree=", &cmd)) { |
122 | setenv(GIT_WORK_TREE_ENVIRONMENT, cmd, 1); | |
4394efec ML |
123 | if (envchanged) |
124 | *envchanged = 1; | |
74866d75 BW |
125 | } else if (!strcmp(cmd, "--super-prefix")) { |
126 | if (*argc < 2) { | |
127 | fprintf(stderr, "No prefix given for --super-prefix.\n" ); | |
128 | usage(git_usage_string); | |
129 | } | |
130 | setenv(GIT_SUPER_PREFIX_ENVIRONMENT, (*argv)[1], 1); | |
131 | if (envchanged) | |
132 | *envchanged = 1; | |
133 | (*argv)++; | |
134 | (*argc)--; | |
135 | } else if (skip_prefix(cmd, "--super-prefix=", &cmd)) { | |
136 | setenv(GIT_SUPER_PREFIX_ENVIRONMENT, cmd, 1); | |
137 | if (envchanged) | |
138 | *envchanged = 1; | |
6acbcb92 | 139 | } else if (!strcmp(cmd, "--bare")) { |
4d3ab44d | 140 | char *cwd = xgetcwd(); |
6adcca3f | 141 | is_bare_repository_cfg = 1; |
4d3ab44d RS |
142 | setenv(GIT_DIR_ENVIRONMENT, cwd, 0); |
143 | free(cwd); | |
2cd83d10 | 144 | setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, "0", 1); |
4394efec ML |
145 | if (envchanged) |
146 | *envchanged = 1; | |
8b1fa778 AR |
147 | } else if (!strcmp(cmd, "-c")) { |
148 | if (*argc < 2) { | |
149 | fprintf(stderr, "-c expects a configuration string\n" ); | |
150 | usage(git_usage_string); | |
151 | } | |
2b64fc89 | 152 | git_config_push_parameter((*argv)[1]); |
8b1fa778 AR |
153 | (*argv)++; |
154 | (*argc)--; | |
823ab40f JK |
155 | } else if (!strcmp(cmd, "--literal-pathspecs")) { |
156 | setenv(GIT_LITERAL_PATHSPECS_ENVIRONMENT, "1", 1); | |
157 | if (envchanged) | |
158 | *envchanged = 1; | |
159 | } else if (!strcmp(cmd, "--no-literal-pathspecs")) { | |
160 | setenv(GIT_LITERAL_PATHSPECS_ENVIRONMENT, "0", 1); | |
161 | if (envchanged) | |
162 | *envchanged = 1; | |
bd30c2e4 NTND |
163 | } else if (!strcmp(cmd, "--glob-pathspecs")) { |
164 | setenv(GIT_GLOB_PATHSPECS_ENVIRONMENT, "1", 1); | |
165 | if (envchanged) | |
166 | *envchanged = 1; | |
167 | } else if (!strcmp(cmd, "--noglob-pathspecs")) { | |
168 | setenv(GIT_NOGLOB_PATHSPECS_ENVIRONMENT, "1", 1); | |
169 | if (envchanged) | |
170 | *envchanged = 1; | |
93d93537 NTND |
171 | } else if (!strcmp(cmd, "--icase-pathspecs")) { |
172 | setenv(GIT_ICASE_PATHSPECS_ENVIRONMENT, "1", 1); | |
173 | if (envchanged) | |
174 | *envchanged = 1; | |
6035d6aa NTND |
175 | } else if (!strcmp(cmd, "--shallow-file")) { |
176 | (*argv)++; | |
177 | (*argc)--; | |
069c0532 | 178 | set_alternate_shallow_file((*argv)[0], 1); |
6035d6aa NTND |
179 | if (envchanged) |
180 | *envchanged = 1; | |
44e1e4d6 NR |
181 | } else if (!strcmp(cmd, "-C")) { |
182 | if (*argc < 2) { | |
183 | fprintf(stderr, "No directory given for -C.\n" ); | |
184 | usage(git_usage_string); | |
185 | } | |
6a536e20 KN |
186 | if ((*argv)[1][0]) { |
187 | if (chdir((*argv)[1])) | |
188 | die_errno("Cannot change to '%s'", (*argv)[1]); | |
189 | if (envchanged) | |
190 | *envchanged = 1; | |
191 | } | |
44e1e4d6 NR |
192 | (*argv)++; |
193 | (*argc)--; | |
8893fd95 JK |
194 | } else if (!strcmp(cmd, "--list-builtins")) { |
195 | list_builtins(); | |
196 | exit(0); | |
6acbcb92 JS |
197 | } else { |
198 | fprintf(stderr, "Unknown option: %s\n", cmd); | |
822a7d50 | 199 | usage(git_usage_string); |
6acbcb92 | 200 | } |
4ab243a9 JS |
201 | |
202 | (*argv)++; | |
203 | (*argc)--; | |
4ab243a9 | 204 | } |
73546c08 | 205 | return (*argv) - orig_argv; |
4ab243a9 JS |
206 | } |
207 | ||
2b11e317 JS |
208 | static int handle_alias(int *argcp, const char ***argv) |
209 | { | |
af05d679 | 210 | int envchanged = 0, ret = 0, saved_errno = errno; |
0347a8c7 | 211 | int count, option_count; |
4b25d091 | 212 | const char **new_argv; |
94351118 JK |
213 | const char *alias_command; |
214 | char *alias_string; | |
0347a8c7 ML |
215 | |
216 | alias_command = (*argv)[0]; | |
94351118 | 217 | alias_string = alias_lookup(alias_command); |
0347a8c7 | 218 | if (alias_string) { |
dfd42a3c | 219 | if (alias_string[0] == '!') { |
850d2fec | 220 | struct child_process child = CHILD_PROCESS_INIT; |
a9bcf658 JS |
221 | int nongit_ok; |
222 | ||
223 | /* Aliases expect GIT_PREFIX, GIT_DIR etc to be set */ | |
224 | setup_git_directory_gently(&nongit_ok); | |
7f51f8bc | 225 | |
030149a4 | 226 | commit_pager_choice(); |
7f51f8bc | 227 | |
850d2fec JK |
228 | child.use_shell = 1; |
229 | argv_array_push(&child.args, alias_string + 1); | |
230 | argv_array_pushv(&child.args, (*argv) + 1); | |
7f51f8bc | 231 | |
850d2fec | 232 | ret = run_command(&child); |
7f51f8bc EFL |
233 | if (ret >= 0) /* normal exit */ |
234 | exit(ret); | |
235 | ||
236 | die_errno("While expanding alias '%s': '%s'", | |
237 | alias_command, alias_string + 1); | |
dfd42a3c | 238 | } |
0347a8c7 | 239 | count = split_cmdline(alias_string, &new_argv); |
dc4179f9 | 240 | if (count < 0) |
ad9ac6db GB |
241 | die("Bad alias.%s string: %s", alias_command, |
242 | split_cmdline_strerror(count)); | |
4394efec ML |
243 | option_count = handle_options(&new_argv, &count, &envchanged); |
244 | if (envchanged) | |
245 | die("alias '%s' changes environment variables\n" | |
246 | "You can use '!git' in the alias to do this.", | |
247 | alias_command); | |
0347a8c7 ML |
248 | memmove(new_argv - option_count, new_argv, |
249 | count * sizeof(char *)); | |
250 | new_argv -= option_count; | |
251 | ||
252 | if (count < 1) | |
253 | die("empty alias for %s", alias_command); | |
254 | ||
255 | if (!strcmp(alias_command, new_argv[0])) | |
256 | die("recursive alias: %s", alias_command); | |
257 | ||
b319ce4c | 258 | trace_argv_printf(new_argv, |
6ce4e61f CC |
259 | "trace: alias expansion: %s =>", |
260 | alias_command); | |
575ba9d6 | 261 | |
2756ca43 | 262 | REALLOC_ARRAY(new_argv, count + *argcp); |
0347a8c7 | 263 | /* insert after command name */ |
4b25d091 | 264 | memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp); |
2b11e317 | 265 | |
0347a8c7 ML |
266 | *argv = new_argv; |
267 | *argcp += count - 1; | |
2b11e317 | 268 | |
0347a8c7 | 269 | ret = 1; |
2b11e317 JS |
270 | } |
271 | ||
47e5c0ca JS |
272 | errno = saved_errno; |
273 | ||
2b11e317 JS |
274 | return ret; |
275 | } | |
276 | ||
ee38dfb8 NTND |
277 | #define RUN_SETUP (1<<0) |
278 | #define RUN_SETUP_GENTLY (1<<1) | |
279 | #define USE_PAGER (1<<2) | |
7eff28a9 SP |
280 | /* |
281 | * require working tree to be present -- anything uses this needs | |
282 | * RUN_SETUP for reading from the configuration file. | |
283 | */ | |
ee38dfb8 | 284 | #define NEED_WORK_TREE (1<<3) |
74866d75 | 285 | #define SUPPORT_SUPER_PREFIX (1<<4) |
a633fca0 | 286 | |
47d0b4ff LT |
287 | struct cmd_struct { |
288 | const char *cmd; | |
289 | int (*fn)(int, const char **, const char *); | |
290 | int option; | |
291 | }; | |
292 | ||
f172f334 | 293 | static int run_builtin(struct cmd_struct *p, int argc, const char **argv) |
47d0b4ff | 294 | { |
99caeed0 | 295 | int status, help; |
0f157315 | 296 | struct stat st; |
47d0b4ff LT |
297 | const char *prefix; |
298 | ||
299 | prefix = NULL; | |
99caeed0 JN |
300 | help = argc == 2 && !strcmp(argv[1], "-h"); |
301 | if (!help) { | |
302 | if (p->option & RUN_SETUP) | |
303 | prefix = setup_git_directory(); | |
27bd38d4 | 304 | else if (p->option & RUN_SETUP_GENTLY) { |
ee38dfb8 NTND |
305 | int nongit_ok; |
306 | prefix = setup_git_directory_gently(&nongit_ok); | |
307 | } | |
99caeed0 | 308 | |
ee38dfb8 | 309 | if (use_pager == -1 && p->option & (RUN_SETUP | RUN_SETUP_GENTLY)) |
99caeed0 JN |
310 | use_pager = check_pager_config(p->cmd); |
311 | if (use_pager == -1 && p->option & USE_PAGER) | |
312 | use_pager = 1; | |
a9ca8a85 NTND |
313 | |
314 | if ((p->option & (RUN_SETUP | RUN_SETUP_GENTLY)) && | |
315 | startup_info->have_repository) /* get_git_dir() may set up repo, avoid that */ | |
316 | trace_repo_setup(prefix); | |
99caeed0 | 317 | } |
4e10738a JK |
318 | commit_pager_choice(); |
319 | ||
74866d75 BW |
320 | if (!help && get_super_prefix()) { |
321 | if (!(p->option & SUPPORT_SUPER_PREFIX)) | |
322 | die("%s doesn't support --super-prefix", p->cmd); | |
74866d75 BW |
323 | } |
324 | ||
99caeed0 | 325 | if (!help && p->option & NEED_WORK_TREE) |
59f0f2f3 MH |
326 | setup_work_tree(); |
327 | ||
b319ce4c | 328 | trace_argv_printf(argv, "trace: built-in: git"); |
47d0b4ff | 329 | |
0f157315 LT |
330 | status = p->fn(argc, argv, prefix); |
331 | if (status) | |
47e3de0e | 332 | return status; |
0f157315 LT |
333 | |
334 | /* Somebody closed stdout? */ | |
335 | if (fstat(fileno(stdout), &st)) | |
336 | return 0; | |
337 | /* Ignore write errors for pipes and sockets.. */ | |
338 | if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) | |
339 | return 0; | |
340 | ||
341 | /* Check for ENOSPC and EIO errors.. */ | |
0227f988 | 342 | if (fflush(stdout)) |
d824cbba | 343 | die_errno("write failure on standard output"); |
0227f988 LT |
344 | if (ferror(stdout)) |
345 | die("unknown write failure on standard output"); | |
346 | if (fclose(stdout)) | |
d824cbba | 347 | die_errno("close failed on standard output"); |
0f157315 | 348 | return 0; |
47d0b4ff LT |
349 | } |
350 | ||
c6127fa3 SS |
351 | static struct cmd_struct commands[] = { |
352 | { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE }, | |
783d7e86 | 353 | { "am", cmd_am, RUN_SETUP | NEED_WORK_TREE }, |
c6127fa3 SS |
354 | { "annotate", cmd_annotate, RUN_SETUP }, |
355 | { "apply", cmd_apply, RUN_SETUP_GENTLY }, | |
eb0224c6 | 356 | { "archive", cmd_archive, RUN_SETUP_GENTLY }, |
c6127fa3 SS |
357 | { "bisect--helper", cmd_bisect__helper, RUN_SETUP }, |
358 | { "blame", cmd_blame, RUN_SETUP }, | |
359 | { "branch", cmd_branch, RUN_SETUP }, | |
360 | { "bundle", cmd_bundle, RUN_SETUP_GENTLY }, | |
361 | { "cat-file", cmd_cat_file, RUN_SETUP }, | |
362 | { "check-attr", cmd_check_attr, RUN_SETUP }, | |
363 | { "check-ignore", cmd_check_ignore, RUN_SETUP | NEED_WORK_TREE }, | |
364 | { "check-mailmap", cmd_check_mailmap, RUN_SETUP }, | |
365 | { "check-ref-format", cmd_check_ref_format }, | |
0ca560cb | 366 | { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE }, |
c6127fa3 SS |
367 | { "checkout-index", cmd_checkout_index, |
368 | RUN_SETUP | NEED_WORK_TREE}, | |
369 | { "cherry", cmd_cherry, RUN_SETUP }, | |
370 | { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE }, | |
371 | { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE }, | |
86d26f24 | 372 | { "clone", cmd_clone }, |
c6127fa3 SS |
373 | { "column", cmd_column, RUN_SETUP_GENTLY }, |
374 | { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE }, | |
375 | { "commit-tree", cmd_commit_tree, RUN_SETUP }, | |
376 | { "config", cmd_config, RUN_SETUP_GENTLY }, | |
377 | { "count-objects", cmd_count_objects, RUN_SETUP }, | |
378 | { "credential", cmd_credential, RUN_SETUP_GENTLY }, | |
379 | { "describe", cmd_describe, RUN_SETUP }, | |
380 | { "diff", cmd_diff }, | |
381 | { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE }, | |
382 | { "diff-index", cmd_diff_index, RUN_SETUP }, | |
383 | { "diff-tree", cmd_diff_tree, RUN_SETUP }, | |
019678d6 | 384 | { "difftool", cmd_difftool, RUN_SETUP | NEED_WORK_TREE }, |
c6127fa3 SS |
385 | { "fast-export", cmd_fast_export, RUN_SETUP }, |
386 | { "fetch", cmd_fetch, RUN_SETUP }, | |
387 | { "fetch-pack", cmd_fetch_pack, RUN_SETUP }, | |
388 | { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP }, | |
389 | { "for-each-ref", cmd_for_each_ref, RUN_SETUP }, | |
390 | { "format-patch", cmd_format_patch, RUN_SETUP }, | |
391 | { "fsck", cmd_fsck, RUN_SETUP }, | |
392 | { "fsck-objects", cmd_fsck, RUN_SETUP }, | |
393 | { "gc", cmd_gc, RUN_SETUP }, | |
394 | { "get-tar-commit-id", cmd_get_tar_commit_id }, | |
0281e487 | 395 | { "grep", cmd_grep, RUN_SETUP_GENTLY | SUPPORT_SUPER_PREFIX }, |
c6127fa3 SS |
396 | { "hash-object", cmd_hash_object }, |
397 | { "help", cmd_help }, | |
398 | { "index-pack", cmd_index_pack, RUN_SETUP_GENTLY }, | |
86d26f24 NTND |
399 | { "init", cmd_init_db }, |
400 | { "init-db", cmd_init_db }, | |
cbd9fc23 | 401 | { "interpret-trailers", cmd_interpret_trailers, RUN_SETUP_GENTLY }, |
c6127fa3 | 402 | { "log", cmd_log, RUN_SETUP }, |
e77aa336 | 403 | { "ls-files", cmd_ls_files, RUN_SETUP | SUPPORT_SUPER_PREFIX }, |
c6127fa3 SS |
404 | { "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY }, |
405 | { "ls-tree", cmd_ls_tree, RUN_SETUP }, | |
3f0ec068 | 406 | { "mailinfo", cmd_mailinfo, RUN_SETUP_GENTLY }, |
c6127fa3 SS |
407 | { "mailsplit", cmd_mailsplit }, |
408 | { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE }, | |
409 | { "merge-base", cmd_merge_base, RUN_SETUP }, | |
410 | { "merge-file", cmd_merge_file, RUN_SETUP_GENTLY }, | |
411 | { "merge-index", cmd_merge_index, RUN_SETUP }, | |
412 | { "merge-ours", cmd_merge_ours, RUN_SETUP }, | |
413 | { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, | |
414 | { "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, | |
415 | { "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, | |
416 | { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, | |
417 | { "merge-tree", cmd_merge_tree, RUN_SETUP }, | |
418 | { "mktag", cmd_mktag, RUN_SETUP }, | |
419 | { "mktree", cmd_mktree, RUN_SETUP }, | |
420 | { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE }, | |
421 | { "name-rev", cmd_name_rev, RUN_SETUP }, | |
422 | { "notes", cmd_notes, RUN_SETUP }, | |
423 | { "pack-objects", cmd_pack_objects, RUN_SETUP }, | |
424 | { "pack-redundant", cmd_pack_redundant, RUN_SETUP }, | |
425 | { "pack-refs", cmd_pack_refs, RUN_SETUP }, | |
4a73aaaf | 426 | { "patch-id", cmd_patch_id, RUN_SETUP_GENTLY }, |
c6127fa3 SS |
427 | { "pickaxe", cmd_blame, RUN_SETUP }, |
428 | { "prune", cmd_prune, RUN_SETUP }, | |
429 | { "prune-packed", cmd_prune_packed, RUN_SETUP }, | |
1e1ea69f | 430 | { "pull", cmd_pull, RUN_SETUP | NEED_WORK_TREE }, |
c6127fa3 | 431 | { "push", cmd_push, RUN_SETUP }, |
3d415425 | 432 | { "read-tree", cmd_read_tree, RUN_SETUP | SUPPORT_SUPER_PREFIX}, |
4557f1ad | 433 | { "rebase--helper", cmd_rebase__helper, RUN_SETUP | NEED_WORK_TREE }, |
c6127fa3 SS |
434 | { "receive-pack", cmd_receive_pack }, |
435 | { "reflog", cmd_reflog, RUN_SETUP }, | |
436 | { "remote", cmd_remote, RUN_SETUP }, | |
437 | { "remote-ext", cmd_remote_ext }, | |
438 | { "remote-fd", cmd_remote_fd }, | |
439 | { "repack", cmd_repack, RUN_SETUP }, | |
440 | { "replace", cmd_replace, RUN_SETUP }, | |
441 | { "rerere", cmd_rerere, RUN_SETUP }, | |
442 | { "reset", cmd_reset, RUN_SETUP }, | |
443 | { "rev-list", cmd_rev_list, RUN_SETUP }, | |
444 | { "rev-parse", cmd_rev_parse }, | |
445 | { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE }, | |
446 | { "rm", cmd_rm, RUN_SETUP }, | |
447 | { "send-pack", cmd_send_pack, RUN_SETUP }, | |
448 | { "shortlog", cmd_shortlog, RUN_SETUP_GENTLY | USE_PAGER }, | |
449 | { "show", cmd_show, RUN_SETUP }, | |
450 | { "show-branch", cmd_show_branch, RUN_SETUP }, | |
451 | { "show-ref", cmd_show_ref, RUN_SETUP }, | |
452 | { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE }, | |
453 | { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE }, | |
454 | { "stripspace", cmd_stripspace }, | |
89c86265 | 455 | { "submodule--helper", cmd_submodule__helper, RUN_SETUP | SUPPORT_SUPER_PREFIX}, |
c6127fa3 SS |
456 | { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP }, |
457 | { "tag", cmd_tag, RUN_SETUP }, | |
458 | { "unpack-file", cmd_unpack_file, RUN_SETUP }, | |
459 | { "unpack-objects", cmd_unpack_objects, RUN_SETUP }, | |
460 | { "update-index", cmd_update_index, RUN_SETUP }, | |
461 | { "update-ref", cmd_update_ref, RUN_SETUP }, | |
462 | { "update-server-info", cmd_update_server_info, RUN_SETUP }, | |
463 | { "upload-archive", cmd_upload_archive }, | |
464 | { "upload-archive--writer", cmd_upload_archive_writer }, | |
465 | { "var", cmd_var, RUN_SETUP_GENTLY }, | |
d07b00b7 | 466 | { "verify-commit", cmd_verify_commit, RUN_SETUP }, |
c6127fa3 SS |
467 | { "verify-pack", cmd_verify_pack }, |
468 | { "verify-tag", cmd_verify_tag, RUN_SETUP }, | |
469 | { "version", cmd_version }, | |
470 | { "whatchanged", cmd_whatchanged, RUN_SETUP }, | |
df0b6cfb | 471 | { "worktree", cmd_worktree, RUN_SETUP }, |
c6127fa3 SS |
472 | { "write-tree", cmd_write_tree, RUN_SETUP }, |
473 | }; | |
474 | ||
c4f901d1 | 475 | static struct cmd_struct *get_builtin(const char *s) |
c6127fa3 SS |
476 | { |
477 | int i; | |
478 | for (i = 0; i < ARRAY_SIZE(commands); i++) { | |
c4f901d1 | 479 | struct cmd_struct *p = commands + i; |
c6127fa3 | 480 | if (!strcmp(s, p->cmd)) |
c4f901d1 | 481 | return p; |
c6127fa3 | 482 | } |
c4f901d1 SV |
483 | return NULL; |
484 | } | |
485 | ||
486 | int is_builtin(const char *s) | |
487 | { | |
488 | return !!get_builtin(s); | |
c6127fa3 SS |
489 | } |
490 | ||
8893fd95 JK |
491 | static void list_builtins(void) |
492 | { | |
493 | int i; | |
494 | for (i = 0; i < ARRAY_SIZE(commands); i++) | |
495 | printf("%s\n", commands[i].cmd); | |
496 | } | |
497 | ||
63ca1c09 AK |
498 | #ifdef STRIP_EXTENSION |
499 | static void strip_extension(const char **argv) | |
500 | { | |
501 | size_t len; | |
502 | ||
503 | if (strip_suffix(argv[0], STRIP_EXTENSION, &len)) | |
504 | argv[0] = xmemdupz(argv[0], len); | |
505 | } | |
506 | #else | |
507 | #define strip_extension(cmd) | |
508 | #endif | |
509 | ||
3f784a4d | 510 | static void handle_builtin(int argc, const char **argv) |
231af832 | 511 | { |
2c6b6d9f | 512 | struct argv_array args = ARGV_ARRAY_INIT; |
63ca1c09 | 513 | const char *cmd; |
c4f901d1 | 514 | struct cmd_struct *builtin; |
23326d14 | 515 | |
63ca1c09 AK |
516 | strip_extension(argv); |
517 | cmd = argv[0]; | |
231af832 | 518 | |
2c6b6d9f | 519 | /* Turn "git cmd --help" into "git help --exclude-guides cmd" */ |
1cd95087 | 520 | if (argc > 1 && !strcmp(argv[1], "--help")) { |
2c6b6d9f RT |
521 | int i; |
522 | ||
1cd95087 LT |
523 | argv[1] = argv[0]; |
524 | argv[0] = cmd = "help"; | |
2c6b6d9f RT |
525 | |
526 | for (i = 0; i < argc; i++) { | |
527 | argv_array_push(&args, argv[i]); | |
528 | if (!i) | |
529 | argv_array_push(&args, "--exclude-guides"); | |
530 | } | |
531 | ||
532 | argc++; | |
533 | argv = args.argv; | |
1cd95087 LT |
534 | } |
535 | ||
c4f901d1 | 536 | builtin = get_builtin(cmd); |
441981bc JH |
537 | if (builtin) |
538 | exit(run_builtin(builtin, argc, argv)); | |
2c6b6d9f | 539 | argv_array_clear(&args); |
231af832 LT |
540 | } |
541 | ||
7550be0a JH |
542 | static void execv_dashed_external(const char **argv) |
543 | { | |
2b296c93 | 544 | struct child_process cmd = CHILD_PROCESS_INIT; |
d8e96fd8 | 545 | int status; |
7550be0a | 546 | |
74866d75 BW |
547 | if (get_super_prefix()) |
548 | die("%s doesn't support --super-prefix", argv[0]); | |
549 | ||
92058e4d JK |
550 | if (use_pager == -1) |
551 | use_pager = check_pager_config(argv[0]); | |
030149a4 JN |
552 | commit_pager_choice(); |
553 | ||
2b296c93 JK |
554 | argv_array_pushf(&cmd.args, "git-%s", argv[0]); |
555 | argv_array_pushv(&cmd.args, argv + 1); | |
556 | cmd.clean_on_exit = 1; | |
46df6906 | 557 | cmd.wait_after_clean = 1; |
2b296c93 | 558 | cmd.silent_exec_failure = 1; |
7550be0a | 559 | |
2b296c93 | 560 | trace_argv_printf(cmd.args.argv, "trace: exec:"); |
7550be0a | 561 | |
d8e96fd8 | 562 | /* |
246f0ede JK |
563 | * If we fail because the command is not found, it is |
564 | * OK to return. Otherwise, we just pass along the status code, | |
565 | * or our usual generic code if we were not even able to exec | |
566 | * the program. | |
d8e96fd8 | 567 | */ |
2b296c93 | 568 | status = run_command(&cmd); |
246f0ede | 569 | if (status >= 0) |
5709e036 | 570 | exit(status); |
246f0ede JK |
571 | else if (errno != ENOENT) |
572 | exit(128); | |
7550be0a JH |
573 | } |
574 | ||
a907e1b6 AS |
575 | static int run_argv(int *argcp, const char ***argv) |
576 | { | |
577 | int done_alias = 0; | |
578 | ||
579 | while (1) { | |
441981bc JH |
580 | /* |
581 | * If we tried alias and futzed with our environment, | |
582 | * it no longer is safe to invoke builtins directly in | |
583 | * general. We have to spawn them as dashed externals. | |
584 | * | |
585 | * NEEDSWORK: if we can figure out cases | |
586 | * where it is safe to do, we can avoid spawning a new | |
587 | * process. | |
588 | */ | |
589 | if (!done_alias) | |
590 | handle_builtin(*argcp, *argv); | |
a907e1b6 AS |
591 | |
592 | /* .. then try the external ones */ | |
593 | execv_dashed_external(*argv); | |
594 | ||
595 | /* It could be an alias -- this works around the insanity | |
596 | * of overriding "git log" with "git show" by having | |
597 | * alias.log = show | |
598 | */ | |
c0562611 NTND |
599 | if (done_alias) |
600 | break; | |
c0562611 | 601 | if (!handle_alias(argcp, argv)) |
a907e1b6 AS |
602 | break; |
603 | done_alias = 1; | |
604 | } | |
605 | ||
606 | return done_alias; | |
607 | } | |
608 | ||
3f2e2297 | 609 | int cmd_main(int argc, const char **argv) |
8e49d503 | 610 | { |
4dd47c3b | 611 | const char *cmd; |
8fa7975b | 612 | int done_help = 0; |
231af832 | 613 | |
650c4492 | 614 | cmd = argv[0]; |
2cd72b0b | 615 | if (!cmd) |
4dd47c3b | 616 | cmd = "git-help"; |
6854a8f5 JK |
617 | else { |
618 | const char *slash = find_last_dir_sep(cmd); | |
619 | if (slash) | |
620 | cmd = slash + 1; | |
621 | } | |
8e49d503 | 622 | |
578da039 KB |
623 | trace_command_performance(argv); |
624 | ||
231af832 LT |
625 | /* |
626 | * "git-xxxx" is the same as "git xxxx", but we obviously: | |
627 | * | |
628 | * - cannot take flags in between the "git" and the "xxxx". | |
629 | * - cannot execute it externally (since it would just do | |
630 | * the same thing over again) | |
631 | * | |
3f784a4d SS |
632 | * So we just directly call the builtin handler, and die if |
633 | * that one cannot handle it. | |
231af832 | 634 | */ |
ae021d87 | 635 | if (skip_prefix(cmd, "git-", &cmd)) { |
231af832 | 636 | argv[0] = cmd; |
3f784a4d SS |
637 | handle_builtin(argc, argv); |
638 | die("cannot handle %s as a builtin", cmd); | |
231af832 | 639 | } |
8e49d503 | 640 | |
231af832 | 641 | /* Look for flags.. */ |
6acbcb92 JS |
642 | argv++; |
643 | argc--; | |
4394efec | 644 | handle_options(&argv, &argc, NULL); |
6acbcb92 | 645 | if (argc > 0) { |
6d877803 JK |
646 | /* translate --help and --version into commands */ |
647 | skip_prefix(argv[0], "--", &argv[0]); | |
6acbcb92 | 648 | } else { |
3d7e2d85 | 649 | /* The user didn't specify a command; give them help */ |
73e25e7c | 650 | commit_pager_choice(); |
3d7e2d85 SP |
651 | printf("usage: %s\n\n", git_usage_string); |
652 | list_common_cmds_help(); | |
421a9769 | 653 | printf("\n%s\n", _(git_more_info_string)); |
3d7e2d85 | 654 | exit(1); |
97fc6c5f | 655 | } |
6acbcb92 | 656 | cmd = argv[0]; |
231af832 LT |
657 | |
658 | /* | |
511707d4 | 659 | * We use PATH to find git commands, but we prepend some higher |
3ea3c215 | 660 | * precedence paths: the "--exec-path" option, the GIT_EXEC_PATH |
511707d4 SP |
661 | * environment, and the $(gitexecdir) from the Makefile at build |
662 | * time. | |
231af832 | 663 | */ |
e1464ca7 | 664 | setup_path(); |
8e49d503 | 665 | |
a025463b | 666 | while (1) { |
8fa7975b | 667 | int was_alias = run_argv(&argc, &argv); |
a907e1b6 | 668 | if (errno != ENOENT) |
a025463b | 669 | break; |
a907e1b6 | 670 | if (was_alias) { |
f3dd015c | 671 | fprintf(stderr, "Expansion of alias '%s' failed; " |
7283bbc7 | 672 | "'%s' is not a git command\n", |
f3dd015c TT |
673 | cmd, argv[0]); |
674 | exit(1); | |
675 | } | |
a907e1b6 AS |
676 | if (!done_help) { |
677 | cmd = argv[0] = help_unknown_cmd(cmd); | |
678 | done_help = 1; | |
679 | } else | |
680 | break; | |
f3dd015c | 681 | } |
10b15b86 AR |
682 | |
683 | fprintf(stderr, "Failed to run command '%s': %s\n", | |
33ebb871 | 684 | cmd, strerror(errno)); |
8e49d503 AE |
685 | |
686 | return 1; | |
687 | } |