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Commit | Line | Data |
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85023577 | 1 | #include "builtin.h" |
2b11e317 | 2 | #include "cache.h" |
fd5c363d TF |
3 | #include "exec_cmd.h" |
4 | #include "help.h" | |
575ba9d6 | 5 | #include "quote.h" |
d8e96fd8 | 6 | #include "run-command.h" |
6035d6aa | 7 | #include "commit.h" |
8e49d503 | 8 | |
822a7d50 | 9 | const char git_usage_string[] = |
44e1e4d6 | 10 | "git [--version] [--help] [-C <path>] [-c name=value]\n" |
03a0fb0c | 11 | " [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]\n" |
a1bea2c1 JT |
12 | " [-p|--paginate|--no-pager] [--no-replace-objects] [--bare]\n" |
13 | " [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]\n" | |
62b4698e | 14 | " <command> [<args>]"; |
822a7d50 | 15 | |
b7d96819 | 16 | const char git_more_info_string[] = |
73903d0b PO |
17 | 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."); | |
b7d96819 | 20 | |
e37c1329 | 21 | static struct startup_info git_startup_info; |
4e10738a | 22 | static int use_pager = -1; |
4e10738a JK |
23 | |
24 | static 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 | ||
4b25d091 | 37 | static int handle_options(const char ***argv, int *argc, int *envchanged) |
4ab243a9 | 38 | { |
73546c08 | 39 | const char **orig_argv = *argv; |
4ab243a9 JS |
40 | |
41 | while (*argc > 0) { | |
42 | const char *cmd = (*argv)[0]; | |
43 | if (cmd[0] != '-') | |
44 | break; | |
45 | ||
6acbcb92 JS |
46 | /* |
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 | */ | |
59556548 | 57 | if (starts_with(cmd, "--exec-path")) { |
6acbcb92 JS |
58 | cmd += 11; |
59 | if (*cmd == '=') | |
384df833 | 60 | git_set_argv_exec_path(cmd + 1); |
6acbcb92 JS |
61 | else { |
62 | puts(git_exec_path()); | |
63 | exit(0); | |
64 | } | |
89a56bfb MH |
65 | } else if (!strcmp(cmd, "--html-path")) { |
66 | puts(system_path(GIT_HTML_PATH)); | |
67 | exit(0); | |
f2dd8c37 JS |
68 | } 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); | |
6acbcb92 | 74 | } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) { |
4e10738a | 75 | use_pager = 1; |
463a849d | 76 | } else if (!strcmp(cmd, "--no-pager")) { |
4e10738a | 77 | use_pager = 0; |
463a849d MM |
78 | if (envchanged) |
79 | *envchanged = 1; | |
b0fa7ab5 CC |
80 | } else if (!strcmp(cmd, "--no-replace-objects")) { |
81 | read_replace_refs = 0; | |
6476b38b CC |
82 | setenv(NO_REPLACE_OBJECTS_ENVIRONMENT, "1", 1); |
83 | if (envchanged) | |
84 | *envchanged = 1; | |
6acbcb92 | 85 | } else if (!strcmp(cmd, "--git-dir")) { |
c321f00d BG |
86 | if (*argc < 2) { |
87 | fprintf(stderr, "No directory given for --git-dir.\n" ); | |
88 | usage(git_usage_string); | |
89 | } | |
45b09794 | 90 | setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1); |
4394efec ML |
91 | if (envchanged) |
92 | *envchanged = 1; | |
6acbcb92 JS |
93 | (*argv)++; |
94 | (*argc)--; | |
59556548 | 95 | } else if (starts_with(cmd, "--git-dir=")) { |
45b09794 | 96 | setenv(GIT_DIR_ENVIRONMENT, cmd + 10, 1); |
4394efec ML |
97 | if (envchanged) |
98 | *envchanged = 1; | |
a1bea2c1 JT |
99 | } 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)--; | |
59556548 | 109 | } else if (starts_with(cmd, "--namespace=")) { |
a1bea2c1 JT |
110 | setenv(GIT_NAMESPACE_ENVIRONMENT, cmd + 12, 1); |
111 | if (envchanged) | |
112 | *envchanged = 1; | |
892c41b9 ML |
113 | } 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); | |
4394efec ML |
119 | if (envchanged) |
120 | *envchanged = 1; | |
892c41b9 ML |
121 | (*argv)++; |
122 | (*argc)--; | |
59556548 | 123 | } else if (starts_with(cmd, "--work-tree=")) { |
892c41b9 | 124 | setenv(GIT_WORK_TREE_ENVIRONMENT, cmd + 12, 1); |
4394efec ML |
125 | if (envchanged) |
126 | *envchanged = 1; | |
6acbcb92 | 127 | } else if (!strcmp(cmd, "--bare")) { |
ef5ddb2f | 128 | static char git_dir[PATH_MAX+1]; |
6adcca3f | 129 | is_bare_repository_cfg = 1; |
9277d602 | 130 | setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 0); |
2cd83d10 | 131 | setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT, "0", 1); |
4394efec ML |
132 | if (envchanged) |
133 | *envchanged = 1; | |
8b1fa778 AR |
134 | } else if (!strcmp(cmd, "-c")) { |
135 | if (*argc < 2) { | |
136 | fprintf(stderr, "-c expects a configuration string\n" ); | |
137 | usage(git_usage_string); | |
138 | } | |
2b64fc89 | 139 | git_config_push_parameter((*argv)[1]); |
8b1fa778 AR |
140 | (*argv)++; |
141 | (*argc)--; | |
823ab40f JK |
142 | } 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; | |
bd30c2e4 NTND |
150 | } 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; | |
93d93537 NTND |
158 | } else if (!strcmp(cmd, "--icase-pathspecs")) { |
159 | setenv(GIT_ICASE_PATHSPECS_ENVIRONMENT, "1", 1); | |
160 | if (envchanged) | |
161 | *envchanged = 1; | |
6035d6aa NTND |
162 | } else if (!strcmp(cmd, "--shallow-file")) { |
163 | (*argv)++; | |
164 | (*argc)--; | |
069c0532 | 165 | set_alternate_shallow_file((*argv)[0], 1); |
6035d6aa NTND |
166 | if (envchanged) |
167 | *envchanged = 1; | |
44e1e4d6 NR |
168 | } 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)--; | |
6acbcb92 JS |
179 | } else { |
180 | fprintf(stderr, "Unknown option: %s\n", cmd); | |
822a7d50 | 181 | usage(git_usage_string); |
6acbcb92 | 182 | } |
4ab243a9 JS |
183 | |
184 | (*argv)++; | |
185 | (*argc)--; | |
4ab243a9 | 186 | } |
73546c08 | 187 | return (*argv) - orig_argv; |
4ab243a9 JS |
188 | } |
189 | ||
2b11e317 JS |
190 | static int handle_alias(int *argcp, const char ***argv) |
191 | { | |
af05d679 | 192 | int envchanged = 0, ret = 0, saved_errno = errno; |
2b11e317 | 193 | const char *subdir; |
0347a8c7 | 194 | int count, option_count; |
4b25d091 | 195 | const char **new_argv; |
94351118 JK |
196 | const char *alias_command; |
197 | char *alias_string; | |
e85dc0a3 | 198 | int unused_nongit; |
2b11e317 | 199 | |
e85dc0a3 | 200 | subdir = setup_git_directory_gently(&unused_nongit); |
0347a8c7 ML |
201 | |
202 | alias_command = (*argv)[0]; | |
94351118 | 203 | alias_string = alias_lookup(alias_command); |
0347a8c7 | 204 | if (alias_string) { |
dfd42a3c | 205 | if (alias_string[0] == '!') { |
7f51f8bc EFL |
206 | const char **alias_argv; |
207 | int argc = *argcp, i; | |
208 | ||
030149a4 | 209 | commit_pager_choice(); |
7f51f8bc EFL |
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 | ||
26b05251 | 218 | ret = run_command_v_opt(alias_argv, RUN_USING_SHELL); |
7f51f8bc EFL |
219 | if (ret >= 0) /* normal exit */ |
220 | exit(ret); | |
221 | ||
222 | die_errno("While expanding alias '%s': '%s'", | |
223 | alias_command, alias_string + 1); | |
dfd42a3c | 224 | } |
0347a8c7 | 225 | count = split_cmdline(alias_string, &new_argv); |
dc4179f9 | 226 | if (count < 0) |
ad9ac6db GB |
227 | die("Bad alias.%s string: %s", alias_command, |
228 | split_cmdline_strerror(count)); | |
4394efec ML |
229 | 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); | |
0347a8c7 ML |
234 | memmove(new_argv - option_count, new_argv, |
235 | count * sizeof(char *)); | |
236 | new_argv -= option_count; | |
237 | ||
238 | if (count < 1) | |
239 | die("empty alias for %s", alias_command); | |
240 | ||
241 | if (!strcmp(alias_command, new_argv[0])) | |
242 | die("recursive alias: %s", alias_command); | |
243 | ||
b319ce4c | 244 | trace_argv_printf(new_argv, |
6ce4e61f CC |
245 | "trace: alias expansion: %s =>", |
246 | alias_command); | |
575ba9d6 | 247 | |
4b25d091 | 248 | new_argv = xrealloc(new_argv, sizeof(char *) * |
6167c136 | 249 | (count + *argcp)); |
0347a8c7 | 250 | /* insert after command name */ |
4b25d091 | 251 | memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp); |
2b11e317 | 252 | |
0347a8c7 ML |
253 | *argv = new_argv; |
254 | *argcp += count - 1; | |
2b11e317 | 255 | |
0347a8c7 | 256 | ret = 1; |
2b11e317 JS |
257 | } |
258 | ||
7be77de2 | 259 | if (subdir && chdir(subdir)) |
d824cbba | 260 | die_errno("Cannot change to '%s'", subdir); |
2b11e317 | 261 | |
47e5c0ca JS |
262 | errno = saved_errno; |
263 | ||
2b11e317 JS |
264 | return ret; |
265 | } | |
266 | ||
ee38dfb8 NTND |
267 | #define RUN_SETUP (1<<0) |
268 | #define RUN_SETUP_GENTLY (1<<1) | |
269 | #define USE_PAGER (1<<2) | |
7eff28a9 SP |
270 | /* |
271 | * require working tree to be present -- anything uses this needs | |
272 | * RUN_SETUP for reading from the configuration file. | |
273 | */ | |
ee38dfb8 | 274 | #define NEED_WORK_TREE (1<<3) |
a633fca0 | 275 | |
47d0b4ff LT |
276 | struct cmd_struct { |
277 | const char *cmd; | |
278 | int (*fn)(int, const char **, const char *); | |
279 | int option; | |
280 | }; | |
281 | ||
f172f334 | 282 | static int run_builtin(struct cmd_struct *p, int argc, const char **argv) |
47d0b4ff | 283 | { |
99caeed0 | 284 | int status, help; |
0f157315 | 285 | struct stat st; |
47d0b4ff LT |
286 | const char *prefix; |
287 | ||
288 | prefix = NULL; | |
99caeed0 JN |
289 | help = argc == 2 && !strcmp(argv[1], "-h"); |
290 | if (!help) { | |
291 | if (p->option & RUN_SETUP) | |
292 | prefix = setup_git_directory(); | |
ee38dfb8 NTND |
293 | if (p->option & RUN_SETUP_GENTLY) { |
294 | int nongit_ok; | |
295 | prefix = setup_git_directory_gently(&nongit_ok); | |
296 | } | |
99caeed0 | 297 | |
ee38dfb8 | 298 | if (use_pager == -1 && p->option & (RUN_SETUP | RUN_SETUP_GENTLY)) |
99caeed0 JN |
299 | use_pager = check_pager_config(p->cmd); |
300 | if (use_pager == -1 && p->option & USE_PAGER) | |
301 | use_pager = 1; | |
a9ca8a85 NTND |
302 | |
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); | |
99caeed0 | 306 | } |
4e10738a JK |
307 | commit_pager_choice(); |
308 | ||
99caeed0 | 309 | if (!help && p->option & NEED_WORK_TREE) |
59f0f2f3 MH |
310 | setup_work_tree(); |
311 | ||
b319ce4c | 312 | trace_argv_printf(argv, "trace: built-in: git"); |
47d0b4ff | 313 | |
0f157315 LT |
314 | status = p->fn(argc, argv, prefix); |
315 | if (status) | |
47e3de0e | 316 | return status; |
0f157315 LT |
317 | |
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.. */ | |
0227f988 | 326 | if (fflush(stdout)) |
d824cbba | 327 | die_errno("write failure on standard output"); |
0227f988 LT |
328 | if (ferror(stdout)) |
329 | die("unknown write failure on standard output"); | |
330 | if (fclose(stdout)) | |
d824cbba | 331 | die_errno("close failed on standard output"); |
0f157315 | 332 | return 0; |
47d0b4ff LT |
333 | } |
334 | ||
c6127fa3 SS |
335 | static struct cmd_struct commands[] = { |
336 | { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE }, | |
337 | { "annotate", cmd_annotate, RUN_SETUP }, | |
338 | { "apply", cmd_apply, RUN_SETUP_GENTLY }, | |
339 | { "archive", cmd_archive }, | |
340 | { "bisect--helper", cmd_bisect__helper, RUN_SETUP }, | |
341 | { "blame", cmd_blame, RUN_SETUP }, | |
342 | { "branch", cmd_branch, RUN_SETUP }, | |
343 | { "bundle", cmd_bundle, RUN_SETUP_GENTLY }, | |
344 | { "cat-file", cmd_cat_file, RUN_SETUP }, | |
345 | { "check-attr", cmd_check_attr, RUN_SETUP }, | |
346 | { "check-ignore", cmd_check_ignore, RUN_SETUP | NEED_WORK_TREE }, | |
347 | { "check-mailmap", cmd_check_mailmap, RUN_SETUP }, | |
348 | { "check-ref-format", cmd_check_ref_format }, | |
349 | { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE }, | |
350 | { "checkout-index", cmd_checkout_index, | |
351 | RUN_SETUP | NEED_WORK_TREE}, | |
352 | { "cherry", cmd_cherry, RUN_SETUP }, | |
353 | { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE }, | |
354 | { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE }, | |
355 | { "clone", cmd_clone }, | |
356 | { "column", cmd_column, RUN_SETUP_GENTLY }, | |
357 | { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE }, | |
358 | { "commit-tree", cmd_commit_tree, RUN_SETUP }, | |
359 | { "config", cmd_config, RUN_SETUP_GENTLY }, | |
360 | { "count-objects", cmd_count_objects, RUN_SETUP }, | |
361 | { "credential", cmd_credential, RUN_SETUP_GENTLY }, | |
362 | { "describe", cmd_describe, RUN_SETUP }, | |
363 | { "diff", cmd_diff }, | |
364 | { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE }, | |
365 | { "diff-index", cmd_diff_index, RUN_SETUP }, | |
366 | { "diff-tree", cmd_diff_tree, RUN_SETUP }, | |
367 | { "fast-export", cmd_fast_export, RUN_SETUP }, | |
368 | { "fetch", cmd_fetch, RUN_SETUP }, | |
369 | { "fetch-pack", cmd_fetch_pack, RUN_SETUP }, | |
370 | { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP }, | |
371 | { "for-each-ref", cmd_for_each_ref, RUN_SETUP }, | |
372 | { "format-patch", cmd_format_patch, RUN_SETUP }, | |
373 | { "fsck", cmd_fsck, RUN_SETUP }, | |
374 | { "fsck-objects", cmd_fsck, RUN_SETUP }, | |
375 | { "gc", cmd_gc, RUN_SETUP }, | |
376 | { "get-tar-commit-id", cmd_get_tar_commit_id }, | |
377 | { "grep", cmd_grep, RUN_SETUP_GENTLY }, | |
378 | { "hash-object", cmd_hash_object }, | |
379 | { "help", cmd_help }, | |
380 | { "index-pack", cmd_index_pack, RUN_SETUP_GENTLY }, | |
381 | { "init", cmd_init_db }, | |
382 | { "init-db", cmd_init_db }, | |
383 | { "log", cmd_log, RUN_SETUP }, | |
384 | { "ls-files", cmd_ls_files, RUN_SETUP }, | |
385 | { "ls-remote", cmd_ls_remote, RUN_SETUP_GENTLY }, | |
386 | { "ls-tree", cmd_ls_tree, RUN_SETUP }, | |
387 | { "mailinfo", cmd_mailinfo }, | |
388 | { "mailsplit", cmd_mailsplit }, | |
389 | { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE }, | |
390 | { "merge-base", cmd_merge_base, RUN_SETUP }, | |
391 | { "merge-file", cmd_merge_file, RUN_SETUP_GENTLY }, | |
392 | { "merge-index", cmd_merge_index, RUN_SETUP }, | |
393 | { "merge-ours", cmd_merge_ours, RUN_SETUP }, | |
394 | { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, | |
395 | { "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, | |
396 | { "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, | |
397 | { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, | |
398 | { "merge-tree", cmd_merge_tree, RUN_SETUP }, | |
399 | { "mktag", cmd_mktag, RUN_SETUP }, | |
400 | { "mktree", cmd_mktree, RUN_SETUP }, | |
401 | { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE }, | |
402 | { "name-rev", cmd_name_rev, RUN_SETUP }, | |
403 | { "notes", cmd_notes, RUN_SETUP }, | |
404 | { "pack-objects", cmd_pack_objects, RUN_SETUP }, | |
405 | { "pack-redundant", cmd_pack_redundant, RUN_SETUP }, | |
406 | { "pack-refs", cmd_pack_refs, RUN_SETUP }, | |
407 | { "patch-id", cmd_patch_id }, | |
408 | { "pickaxe", cmd_blame, RUN_SETUP }, | |
409 | { "prune", cmd_prune, RUN_SETUP }, | |
410 | { "prune-packed", cmd_prune_packed, RUN_SETUP }, | |
411 | { "push", cmd_push, RUN_SETUP }, | |
412 | { "read-tree", cmd_read_tree, RUN_SETUP }, | |
413 | { "receive-pack", cmd_receive_pack }, | |
414 | { "reflog", cmd_reflog, RUN_SETUP }, | |
415 | { "remote", cmd_remote, RUN_SETUP }, | |
416 | { "remote-ext", cmd_remote_ext }, | |
417 | { "remote-fd", cmd_remote_fd }, | |
418 | { "repack", cmd_repack, RUN_SETUP }, | |
419 | { "replace", cmd_replace, RUN_SETUP }, | |
420 | { "rerere", cmd_rerere, RUN_SETUP }, | |
421 | { "reset", cmd_reset, RUN_SETUP }, | |
422 | { "rev-list", cmd_rev_list, RUN_SETUP }, | |
423 | { "rev-parse", cmd_rev_parse }, | |
424 | { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE }, | |
425 | { "rm", cmd_rm, RUN_SETUP }, | |
426 | { "send-pack", cmd_send_pack, RUN_SETUP }, | |
427 | { "shortlog", cmd_shortlog, RUN_SETUP_GENTLY | USE_PAGER }, | |
428 | { "show", cmd_show, RUN_SETUP }, | |
429 | { "show-branch", cmd_show_branch, RUN_SETUP }, | |
430 | { "show-ref", cmd_show_ref, RUN_SETUP }, | |
431 | { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE }, | |
432 | { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE }, | |
433 | { "stripspace", cmd_stripspace }, | |
434 | { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP }, | |
435 | { "tag", cmd_tag, RUN_SETUP }, | |
436 | { "unpack-file", cmd_unpack_file, RUN_SETUP }, | |
437 | { "unpack-objects", cmd_unpack_objects, RUN_SETUP }, | |
438 | { "update-index", cmd_update_index, RUN_SETUP }, | |
439 | { "update-ref", cmd_update_ref, RUN_SETUP }, | |
440 | { "update-server-info", cmd_update_server_info, RUN_SETUP }, | |
441 | { "upload-archive", cmd_upload_archive }, | |
442 | { "upload-archive--writer", cmd_upload_archive_writer }, | |
443 | { "var", cmd_var, RUN_SETUP_GENTLY }, | |
444 | { "verify-pack", cmd_verify_pack }, | |
445 | { "verify-tag", cmd_verify_tag, RUN_SETUP }, | |
446 | { "version", cmd_version }, | |
447 | { "whatchanged", cmd_whatchanged, RUN_SETUP }, | |
448 | { "write-tree", cmd_write_tree, RUN_SETUP }, | |
449 | }; | |
450 | ||
451 | int is_builtin(const char *s) | |
452 | { | |
453 | int i; | |
454 | for (i = 0; i < ARRAY_SIZE(commands); i++) { | |
455 | struct cmd_struct *p = commands+i; | |
456 | if (!strcmp(s, p->cmd)) | |
457 | return 1; | |
458 | } | |
459 | return 0; | |
460 | } | |
461 | ||
3f784a4d | 462 | static void handle_builtin(int argc, const char **argv) |
231af832 LT |
463 | { |
464 | const char *cmd = argv[0]; | |
231af832 | 465 | int i; |
23326d14 JS |
466 | static const char ext[] = STRIP_EXTENSION; |
467 | ||
468 | if (sizeof(ext) > 1) { | |
469 | i = strlen(argv[0]) - strlen(ext); | |
470 | if (i > 0 && !strcmp(argv[0] + i, ext)) { | |
e8eec71d | 471 | char *argv0 = xstrdup(argv[0]); |
23326d14 JS |
472 | argv[0] = cmd = argv0; |
473 | argv0[i] = '\0'; | |
474 | } | |
475 | } | |
231af832 | 476 | |
1cd95087 LT |
477 | /* Turn "git cmd --help" into "git help cmd" */ |
478 | if (argc > 1 && !strcmp(argv[1], "--help")) { | |
479 | argv[1] = argv[0]; | |
480 | argv[0] = cmd = "help"; | |
481 | } | |
482 | ||
231af832 LT |
483 | for (i = 0; i < ARRAY_SIZE(commands); i++) { |
484 | struct cmd_struct *p = commands+i; | |
485 | if (strcmp(p->cmd, cmd)) | |
486 | continue; | |
f172f334 | 487 | exit(run_builtin(p, argc, argv)); |
231af832 LT |
488 | } |
489 | } | |
490 | ||
7550be0a JH |
491 | static void execv_dashed_external(const char **argv) |
492 | { | |
f285a2d7 | 493 | struct strbuf cmd = STRBUF_INIT; |
7550be0a | 494 | const char *tmp; |
d8e96fd8 | 495 | int status; |
7550be0a | 496 | |
92058e4d JK |
497 | if (use_pager == -1) |
498 | use_pager = check_pager_config(argv[0]); | |
030149a4 JN |
499 | commit_pager_choice(); |
500 | ||
7550be0a JH |
501 | strbuf_addf(&cmd, "git-%s", argv[0]); |
502 | ||
503 | /* | |
504 | * argv[0] must be the git command, but the argv array | |
505 | * belongs to the caller, and may be reused in | |
506 | * subsequent loop iterations. Save argv[0] and | |
507 | * restore it on error. | |
508 | */ | |
509 | tmp = argv[0]; | |
510 | argv[0] = cmd.buf; | |
511 | ||
512 | trace_argv_printf(argv, "trace: exec:"); | |
513 | ||
d8e96fd8 JK |
514 | /* |
515 | * if we fail because the command is not found, it is | |
516 | * OK to return. Otherwise, we just pass along the status code. | |
517 | */ | |
10c6cddd | 518 | status = run_command_v_opt(argv, RUN_SILENT_EXEC_FAILURE | RUN_CLEAN_ON_EXIT); |
0ac77ec3 | 519 | if (status >= 0 || errno != ENOENT) |
5709e036 | 520 | exit(status); |
7550be0a JH |
521 | |
522 | argv[0] = tmp; | |
523 | ||
524 | strbuf_release(&cmd); | |
525 | } | |
526 | ||
a907e1b6 AS |
527 | static int run_argv(int *argcp, const char ***argv) |
528 | { | |
529 | int done_alias = 0; | |
530 | ||
531 | while (1) { | |
3f784a4d SS |
532 | /* See if it's a builtin */ |
533 | handle_builtin(*argcp, *argv); | |
a907e1b6 AS |
534 | |
535 | /* .. then try the external ones */ | |
536 | execv_dashed_external(*argv); | |
537 | ||
538 | /* It could be an alias -- this works around the insanity | |
539 | * of overriding "git log" with "git show" by having | |
540 | * alias.log = show | |
541 | */ | |
542 | if (done_alias || !handle_alias(argcp, argv)) | |
543 | break; | |
544 | done_alias = 1; | |
545 | } | |
546 | ||
547 | return done_alias; | |
548 | } | |
549 | ||
7550be0a | 550 | |
84d32bf7 | 551 | int main(int argc, char **av) |
8e49d503 | 552 | { |
84d32bf7 | 553 | const char **argv = (const char **) av; |
4dd47c3b | 554 | const char *cmd; |
231af832 | 555 | |
e37c1329 NTND |
556 | startup_info = &git_startup_info; |
557 | ||
2cd72b0b SP |
558 | cmd = git_extract_argv0_path(argv[0]); |
559 | if (!cmd) | |
4dd47c3b | 560 | cmd = "git-help"; |
8e49d503 | 561 | |
a11c3964 TR |
562 | /* |
563 | * Always open file descriptors 0/1/2 to avoid clobbering files | |
564 | * in die(). It also avoids messing up when the pipes are dup'ed | |
565 | * onto stdin/stdout/stderr in the child processes we spawn. | |
566 | */ | |
567 | sanitize_stdfds(); | |
568 | ||
5e9637c6 ÆAB |
569 | git_setup_gettext(); |
570 | ||
231af832 LT |
571 | /* |
572 | * "git-xxxx" is the same as "git xxxx", but we obviously: | |
573 | * | |
574 | * - cannot take flags in between the "git" and the "xxxx". | |
575 | * - cannot execute it externally (since it would just do | |
576 | * the same thing over again) | |
577 | * | |
3f784a4d SS |
578 | * So we just directly call the builtin handler, and die if |
579 | * that one cannot handle it. | |
231af832 | 580 | */ |
59556548 | 581 | if (starts_with(cmd, "git-")) { |
231af832 LT |
582 | cmd += 4; |
583 | argv[0] = cmd; | |
3f784a4d SS |
584 | handle_builtin(argc, argv); |
585 | die("cannot handle %s as a builtin", cmd); | |
231af832 | 586 | } |
8e49d503 | 587 | |
231af832 | 588 | /* Look for flags.. */ |
6acbcb92 JS |
589 | argv++; |
590 | argc--; | |
4394efec | 591 | handle_options(&argv, &argc, NULL); |
6acbcb92 | 592 | if (argc > 0) { |
59556548 | 593 | if (starts_with(argv[0], "--")) |
6acbcb92 JS |
594 | argv[0] += 2; |
595 | } else { | |
3d7e2d85 | 596 | /* The user didn't specify a command; give them help */ |
73e25e7c | 597 | commit_pager_choice(); |
3d7e2d85 SP |
598 | printf("usage: %s\n\n", git_usage_string); |
599 | list_common_cmds_help(); | |
421a9769 | 600 | printf("\n%s\n", _(git_more_info_string)); |
3d7e2d85 | 601 | exit(1); |
97fc6c5f | 602 | } |
6acbcb92 | 603 | cmd = argv[0]; |
231af832 LT |
604 | |
605 | /* | |
511707d4 | 606 | * We use PATH to find git commands, but we prepend some higher |
3ea3c215 | 607 | * precedence paths: the "--exec-path" option, the GIT_EXEC_PATH |
511707d4 SP |
608 | * environment, and the $(gitexecdir) from the Makefile at build |
609 | * time. | |
231af832 | 610 | */ |
e1464ca7 | 611 | setup_path(); |
8e49d503 | 612 | |
a025463b | 613 | while (1) { |
a907e1b6 AS |
614 | static int done_help = 0; |
615 | static int was_alias = 0; | |
616 | was_alias = run_argv(&argc, &argv); | |
617 | if (errno != ENOENT) | |
a025463b | 618 | break; |
a907e1b6 | 619 | if (was_alias) { |
f3dd015c | 620 | fprintf(stderr, "Expansion of alias '%s' failed; " |
7283bbc7 | 621 | "'%s' is not a git command\n", |
f3dd015c TT |
622 | cmd, argv[0]); |
623 | exit(1); | |
624 | } | |
a907e1b6 AS |
625 | if (!done_help) { |
626 | cmd = argv[0] = help_unknown_cmd(cmd); | |
627 | done_help = 1; | |
628 | } else | |
629 | break; | |
f3dd015c | 630 | } |
10b15b86 AR |
631 | |
632 | fprintf(stderr, "Failed to run command '%s': %s\n", | |
33ebb871 | 633 | cmd, strerror(errno)); |
8e49d503 AE |
634 | |
635 | return 1; | |
636 | } |