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Commit | Line | Data |
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85023577 | 1 | #include "builtin.h" |
77cb17e9 | 2 | #include "exec_cmd.h" |
2b11e317 | 3 | #include "cache.h" |
575ba9d6 | 4 | #include "quote.h" |
d8e96fd8 | 5 | #include "run-command.h" |
8e49d503 | 6 | |
822a7d50 | 7 | const char git_usage_string[] = |
511a3fc1 | 8 | "git [--version] [--exec-path[=GIT_EXEC_PATH]] [--html-path]\n" |
b0fa7ab5 | 9 | " [-p|--paginate|--no-pager] [--no-replace-objects]\n" |
511a3fc1 | 10 | " [--bare] [--git-dir=GIT_DIR] [--work-tree=GIT_WORK_TREE]\n" |
8b1fa778 | 11 | " [-c name=value\n" |
511a3fc1 | 12 | " [--help] COMMAND [ARGS]"; |
822a7d50 | 13 | |
b7d96819 TL |
14 | const char git_more_info_string[] = |
15 | "See 'git help COMMAND' for more information on a specific command."; | |
16 | ||
4e10738a JK |
17 | static int use_pager = -1; |
18 | struct pager_config { | |
19 | const char *cmd; | |
20 | int val; | |
21 | }; | |
22 | ||
23 | static int pager_command_config(const char *var, const char *value, void *data) | |
24 | { | |
25 | struct pager_config *c = data; | |
26 | if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd)) | |
27 | c->val = git_config_bool(var, value); | |
28 | return 0; | |
29 | } | |
30 | ||
31 | /* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */ | |
32 | int check_pager_config(const char *cmd) | |
33 | { | |
34 | struct pager_config c; | |
35 | c.cmd = cmd; | |
36 | c.val = -1; | |
37 | git_config(pager_command_config, &c); | |
38 | return c.val; | |
39 | } | |
40 | ||
41 | static void commit_pager_choice(void) { | |
42 | switch (use_pager) { | |
43 | case 0: | |
44 | setenv("GIT_PAGER", "cat", 1); | |
45 | break; | |
46 | case 1: | |
47 | setup_pager(); | |
48 | break; | |
49 | default: | |
50 | break; | |
51 | } | |
52 | } | |
53 | ||
4b25d091 | 54 | static int handle_options(const char ***argv, int *argc, int *envchanged) |
4ab243a9 JS |
55 | { |
56 | int handled = 0; | |
57 | ||
82cd8358 FL |
58 | if (!getenv("GIT_ASKPASS") && getenv("SSH_ASKPASS")) |
59 | setenv("GIT_ASKPASS", getenv("SSH_ASKPASS"), 1); | |
60 | ||
4ab243a9 JS |
61 | while (*argc > 0) { |
62 | const char *cmd = (*argv)[0]; | |
63 | if (cmd[0] != '-') | |
64 | break; | |
65 | ||
6acbcb92 JS |
66 | /* |
67 | * For legacy reasons, the "version" and "help" | |
68 | * commands can be written with "--" prepended | |
69 | * to make them look like flags. | |
70 | */ | |
71 | if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version")) | |
72 | break; | |
73 | ||
74 | /* | |
75 | * Check remaining flags. | |
76 | */ | |
cc44c765 | 77 | if (!prefixcmp(cmd, "--exec-path")) { |
6acbcb92 JS |
78 | cmd += 11; |
79 | if (*cmd == '=') | |
384df833 | 80 | git_set_argv_exec_path(cmd + 1); |
6acbcb92 JS |
81 | else { |
82 | puts(git_exec_path()); | |
83 | exit(0); | |
84 | } | |
89a56bfb MH |
85 | } else if (!strcmp(cmd, "--html-path")) { |
86 | puts(system_path(GIT_HTML_PATH)); | |
87 | exit(0); | |
6acbcb92 | 88 | } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) { |
4e10738a | 89 | use_pager = 1; |
463a849d | 90 | } else if (!strcmp(cmd, "--no-pager")) { |
4e10738a | 91 | use_pager = 0; |
463a849d MM |
92 | if (envchanged) |
93 | *envchanged = 1; | |
b0fa7ab5 CC |
94 | } else if (!strcmp(cmd, "--no-replace-objects")) { |
95 | read_replace_refs = 0; | |
6476b38b CC |
96 | setenv(NO_REPLACE_OBJECTS_ENVIRONMENT, "1", 1); |
97 | if (envchanged) | |
98 | *envchanged = 1; | |
6acbcb92 | 99 | } else if (!strcmp(cmd, "--git-dir")) { |
c321f00d BG |
100 | if (*argc < 2) { |
101 | fprintf(stderr, "No directory given for --git-dir.\n" ); | |
102 | usage(git_usage_string); | |
103 | } | |
45b09794 | 104 | setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1); |
4394efec ML |
105 | if (envchanged) |
106 | *envchanged = 1; | |
6acbcb92 JS |
107 | (*argv)++; |
108 | (*argc)--; | |
e4b02333 | 109 | handled++; |
cc44c765 | 110 | } else if (!prefixcmp(cmd, "--git-dir=")) { |
45b09794 | 111 | setenv(GIT_DIR_ENVIRONMENT, cmd + 10, 1); |
4394efec ML |
112 | if (envchanged) |
113 | *envchanged = 1; | |
892c41b9 ML |
114 | } else if (!strcmp(cmd, "--work-tree")) { |
115 | if (*argc < 2) { | |
116 | fprintf(stderr, "No directory given for --work-tree.\n" ); | |
117 | usage(git_usage_string); | |
118 | } | |
119 | setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1); | |
4394efec ML |
120 | if (envchanged) |
121 | *envchanged = 1; | |
892c41b9 ML |
122 | (*argv)++; |
123 | (*argc)--; | |
124 | } else if (!prefixcmp(cmd, "--work-tree=")) { | |
125 | setenv(GIT_WORK_TREE_ENVIRONMENT, cmd + 12, 1); | |
4394efec ML |
126 | if (envchanged) |
127 | *envchanged = 1; | |
6acbcb92 | 128 | } else if (!strcmp(cmd, "--bare")) { |
ef5ddb2f | 129 | static char git_dir[PATH_MAX+1]; |
6adcca3f | 130 | is_bare_repository_cfg = 1; |
9277d602 | 131 | setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 0); |
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 | } | |
139 | git_config_parse_parameter((*argv)[1]); | |
140 | (*argv)++; | |
141 | (*argc)--; | |
6acbcb92 JS |
142 | } else { |
143 | fprintf(stderr, "Unknown option: %s\n", cmd); | |
822a7d50 | 144 | usage(git_usage_string); |
6acbcb92 | 145 | } |
4ab243a9 JS |
146 | |
147 | (*argv)++; | |
148 | (*argc)--; | |
149 | handled++; | |
150 | } | |
151 | return handled; | |
152 | } | |
153 | ||
2b11e317 JS |
154 | static int handle_alias(int *argcp, const char ***argv) |
155 | { | |
af05d679 | 156 | int envchanged = 0, ret = 0, saved_errno = errno; |
2b11e317 | 157 | const char *subdir; |
0347a8c7 | 158 | int count, option_count; |
4b25d091 | 159 | const char **new_argv; |
94351118 JK |
160 | const char *alias_command; |
161 | char *alias_string; | |
e85dc0a3 | 162 | int unused_nongit; |
2b11e317 | 163 | |
e85dc0a3 | 164 | subdir = setup_git_directory_gently(&unused_nongit); |
0347a8c7 ML |
165 | |
166 | alias_command = (*argv)[0]; | |
94351118 | 167 | alias_string = alias_lookup(alias_command); |
0347a8c7 | 168 | if (alias_string) { |
dfd42a3c | 169 | if (alias_string[0] == '!') { |
a2f8028d | 170 | if (*argcp > 1) { |
7a33bcbe | 171 | struct strbuf buf; |
a2f8028d | 172 | |
7a33bcbe PH |
173 | strbuf_init(&buf, PATH_MAX); |
174 | strbuf_addstr(&buf, alias_string); | |
b319ce4c | 175 | sq_quote_argv(&buf, (*argv) + 1, PATH_MAX); |
a2f8028d | 176 | free(alias_string); |
7a33bcbe | 177 | alias_string = buf.buf; |
a2f8028d | 178 | } |
dfd42a3c TT |
179 | trace_printf("trace: alias to shell cmd: %s => %s\n", |
180 | alias_command, alias_string + 1); | |
181 | ret = system(alias_string + 1); | |
182 | if (ret >= 0 && WIFEXITED(ret) && | |
183 | WEXITSTATUS(ret) != 127) | |
184 | exit(WEXITSTATUS(ret)); | |
d7530708 | 185 | die("Failed to run '%s' when expanding alias '%s'", |
dfd42a3c TT |
186 | alias_string + 1, alias_command); |
187 | } | |
0347a8c7 | 188 | count = split_cmdline(alias_string, &new_argv); |
dc4179f9 DM |
189 | if (count < 0) |
190 | die("Bad alias.%s string", alias_command); | |
4394efec ML |
191 | option_count = handle_options(&new_argv, &count, &envchanged); |
192 | if (envchanged) | |
193 | die("alias '%s' changes environment variables\n" | |
194 | "You can use '!git' in the alias to do this.", | |
195 | alias_command); | |
0347a8c7 ML |
196 | memmove(new_argv - option_count, new_argv, |
197 | count * sizeof(char *)); | |
198 | new_argv -= option_count; | |
199 | ||
200 | if (count < 1) | |
201 | die("empty alias for %s", alias_command); | |
202 | ||
203 | if (!strcmp(alias_command, new_argv[0])) | |
204 | die("recursive alias: %s", alias_command); | |
205 | ||
b319ce4c | 206 | trace_argv_printf(new_argv, |
6ce4e61f CC |
207 | "trace: alias expansion: %s =>", |
208 | alias_command); | |
575ba9d6 | 209 | |
4b25d091 | 210 | new_argv = xrealloc(new_argv, sizeof(char *) * |
6167c136 | 211 | (count + *argcp)); |
0347a8c7 | 212 | /* insert after command name */ |
4b25d091 | 213 | memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp); |
2b11e317 | 214 | |
0347a8c7 ML |
215 | *argv = new_argv; |
216 | *argcp += count - 1; | |
2b11e317 | 217 | |
0347a8c7 | 218 | ret = 1; |
2b11e317 JS |
219 | } |
220 | ||
7be77de2 | 221 | if (subdir && chdir(subdir)) |
d824cbba | 222 | die_errno("Cannot change to '%s'", subdir); |
2b11e317 | 223 | |
47e5c0ca JS |
224 | errno = saved_errno; |
225 | ||
2b11e317 JS |
226 | return ret; |
227 | } | |
228 | ||
70827b15 | 229 | const char git_version_string[] = GIT_VERSION; |
5b84f4d8 | 230 | |
efffea03 JH |
231 | #define RUN_SETUP (1<<0) |
232 | #define USE_PAGER (1<<1) | |
7eff28a9 SP |
233 | /* |
234 | * require working tree to be present -- anything uses this needs | |
235 | * RUN_SETUP for reading from the configuration file. | |
236 | */ | |
7ae3df8c | 237 | #define NEED_WORK_TREE (1<<2) |
a633fca0 | 238 | |
47d0b4ff LT |
239 | struct cmd_struct { |
240 | const char *cmd; | |
241 | int (*fn)(int, const char **, const char *); | |
242 | int option; | |
243 | }; | |
244 | ||
f172f334 | 245 | static int run_builtin(struct cmd_struct *p, int argc, const char **argv) |
47d0b4ff | 246 | { |
99caeed0 | 247 | int status, help; |
0f157315 | 248 | struct stat st; |
47d0b4ff LT |
249 | const char *prefix; |
250 | ||
251 | prefix = NULL; | |
99caeed0 JN |
252 | help = argc == 2 && !strcmp(argv[1], "-h"); |
253 | if (!help) { | |
254 | if (p->option & RUN_SETUP) | |
255 | prefix = setup_git_directory(); | |
256 | ||
257 | if (use_pager == -1 && p->option & RUN_SETUP) | |
258 | use_pager = check_pager_config(p->cmd); | |
259 | if (use_pager == -1 && p->option & USE_PAGER) | |
260 | use_pager = 1; | |
261 | } | |
4e10738a JK |
262 | commit_pager_choice(); |
263 | ||
99caeed0 | 264 | if (!help && p->option & NEED_WORK_TREE) |
59f0f2f3 MH |
265 | setup_work_tree(); |
266 | ||
b319ce4c | 267 | trace_argv_printf(argv, "trace: built-in: git"); |
47d0b4ff | 268 | |
0f157315 LT |
269 | status = p->fn(argc, argv, prefix); |
270 | if (status) | |
47e3de0e | 271 | return status; |
0f157315 LT |
272 | |
273 | /* Somebody closed stdout? */ | |
274 | if (fstat(fileno(stdout), &st)) | |
275 | return 0; | |
276 | /* Ignore write errors for pipes and sockets.. */ | |
277 | if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) | |
278 | return 0; | |
279 | ||
280 | /* Check for ENOSPC and EIO errors.. */ | |
0227f988 | 281 | if (fflush(stdout)) |
d824cbba | 282 | die_errno("write failure on standard output"); |
0227f988 LT |
283 | if (ferror(stdout)) |
284 | die("unknown write failure on standard output"); | |
285 | if (fclose(stdout)) | |
d824cbba | 286 | die_errno("close failed on standard output"); |
0f157315 | 287 | return 0; |
47d0b4ff LT |
288 | } |
289 | ||
290 | static void handle_internal_command(int argc, const char **argv) | |
231af832 LT |
291 | { |
292 | const char *cmd = argv[0]; | |
47d0b4ff | 293 | static struct cmd_struct commands[] = { |
7ae3df8c | 294 | { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE }, |
11920d28 | 295 | { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE }, |
d97bc5de | 296 | { "annotate", cmd_annotate, RUN_SETUP }, |
f754fa9c | 297 | { "apply", cmd_apply }, |
265d5280 | 298 | { "archive", cmd_archive }, |
1bf072e3 | 299 | { "bisect--helper", cmd_bisect__helper, RUN_SETUP | NEED_WORK_TREE }, |
4f0219a4 | 300 | { "blame", cmd_blame, RUN_SETUP }, |
1da1b3a3 | 301 | { "branch", cmd_branch, RUN_SETUP }, |
2e0afafe | 302 | { "bundle", cmd_bundle }, |
efffea03 | 303 | { "cat-file", cmd_cat_file, RUN_SETUP }, |
782c2d65 | 304 | { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE }, |
4465f410 JS |
305 | { "checkout-index", cmd_checkout_index, |
306 | RUN_SETUP | NEED_WORK_TREE}, | |
0864f264 | 307 | { "check-ref-format", cmd_check_ref_format }, |
2d35d556 | 308 | { "check-attr", cmd_check_attr, RUN_SETUP }, |
e827633a | 309 | { "cherry", cmd_cherry, RUN_SETUP }, |
7ae3df8c | 310 | { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE }, |
8434c2f1 | 311 | { "clone", cmd_clone }, |
113f10f2 | 312 | { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE }, |
f5bbc322 | 313 | { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE }, |
efffea03 | 314 | { "commit-tree", cmd_commit_tree, RUN_SETUP }, |
e0d10e1c | 315 | { "config", cmd_config }, |
8112894d | 316 | { "count-objects", cmd_count_objects, RUN_SETUP }, |
9a0eaf83 | 317 | { "describe", cmd_describe, RUN_SETUP }, |
89d07f75 | 318 | { "diff", cmd_diff }, |
4f38f6b5 | 319 | { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE }, |
efffea03 | 320 | { "diff-index", cmd_diff_index, RUN_SETUP }, |
efffea03 | 321 | { "diff-tree", cmd_diff_tree, RUN_SETUP }, |
f2dc849e | 322 | { "fast-export", cmd_fast_export, RUN_SETUP }, |
b888d61c | 323 | { "fetch", cmd_fetch, RUN_SETUP }, |
2d4177c0 | 324 | { "fetch-pack", cmd_fetch_pack, RUN_SETUP }, |
efffea03 | 325 | { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP }, |
9f613ddd | 326 | { "for-each-ref", cmd_for_each_ref, RUN_SETUP }, |
efffea03 | 327 | { "format-patch", cmd_format_patch, RUN_SETUP }, |
b4dfefe0 MW |
328 | { "fsck", cmd_fsck, RUN_SETUP }, |
329 | { "fsck-objects", cmd_fsck, RUN_SETUP }, | |
6757ada4 | 330 | { "gc", cmd_gc, RUN_SETUP }, |
f754fa9c | 331 | { "get-tar-commit-id", cmd_get_tar_commit_id }, |
59332d13 | 332 | { "grep", cmd_grep, USE_PAGER }, |
b28a1ce0 | 333 | { "hash-object", cmd_hash_object }, |
f754fa9c | 334 | { "help", cmd_help }, |
3bb72562 | 335 | { "index-pack", cmd_index_pack }, |
515377ea | 336 | { "init", cmd_init_db }, |
f754fa9c | 337 | { "init-db", cmd_init_db }, |
efffea03 JH |
338 | { "log", cmd_log, RUN_SETUP | USE_PAGER }, |
339 | { "ls-files", cmd_ls_files, RUN_SETUP }, | |
340 | { "ls-tree", cmd_ls_tree, RUN_SETUP }, | |
8951d7c1 | 341 | { "ls-remote", cmd_ls_remote }, |
f754fa9c JH |
342 | { "mailinfo", cmd_mailinfo }, |
343 | { "mailsplit", cmd_mailsplit }, | |
1c7b76be | 344 | { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE }, |
71dfbf22 | 345 | { "merge-base", cmd_merge_base, RUN_SETUP }, |
ba1f5f35 | 346 | { "merge-file", cmd_merge_file }, |
0ecace72 | 347 | { "merge-index", cmd_merge_index, RUN_SETUP }, |
a00a42ae | 348 | { "merge-ours", cmd_merge_ours, RUN_SETUP }, |
e1b3a2ca | 349 | { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
8cc5b290 AP |
350 | { "merge-recursive-ours", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
351 | { "merge-recursive-theirs", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, | |
1736855c | 352 | { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
907a7cb5 | 353 | { "merge-tree", cmd_merge_tree, RUN_SETUP }, |
112dd514 | 354 | { "mktag", cmd_mktag, RUN_SETUP }, |
633e3556 | 355 | { "mktree", cmd_mktree, RUN_SETUP }, |
7ae3df8c | 356 | { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE }, |
efffea03 | 357 | { "name-rev", cmd_name_rev, RUN_SETUP }, |
cd067d3b | 358 | { "notes", cmd_notes, RUN_SETUP }, |
efffea03 | 359 | { "pack-objects", cmd_pack_objects, RUN_SETUP }, |
377d0276 | 360 | { "pack-redundant", cmd_pack_redundant, RUN_SETUP }, |
dedc0ec5 | 361 | { "patch-id", cmd_patch_id }, |
8951d7c1 | 362 | { "peek-remote", cmd_ls_remote }, |
d97bc5de | 363 | { "pickaxe", cmd_blame, RUN_SETUP }, |
efffea03 JH |
364 | { "prune", cmd_prune, RUN_SETUP }, |
365 | { "prune-packed", cmd_prune_packed, RUN_SETUP }, | |
102cb085 | 366 | { "push", cmd_push, RUN_SETUP }, |
efffea03 | 367 | { "read-tree", cmd_read_tree, RUN_SETUP }, |
be5908ae | 368 | { "receive-pack", cmd_receive_pack }, |
4264dc15 | 369 | { "reflog", cmd_reflog, RUN_SETUP }, |
211c8968 | 370 | { "remote", cmd_remote, RUN_SETUP }, |
54b0c1e0 | 371 | { "replace", cmd_replace, RUN_SETUP }, |
e0d10e1c | 372 | { "repo-config", cmd_config }, |
658f3650 | 373 | { "rerere", cmd_rerere, RUN_SETUP }, |
0e5a7faa | 374 | { "reset", cmd_reset, RUN_SETUP }, |
efffea03 | 375 | { "rev-list", cmd_rev_list, RUN_SETUP }, |
5410a02a | 376 | { "rev-parse", cmd_rev_parse }, |
7ae3df8c | 377 | { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE }, |
271bb087 | 378 | { "rm", cmd_rm, RUN_SETUP }, |
96249c04 | 379 | { "send-pack", cmd_send_pack, RUN_SETUP }, |
abe549e1 | 380 | { "shortlog", cmd_shortlog, USE_PAGER }, |
efffea03 JH |
381 | { "show-branch", cmd_show_branch, RUN_SETUP }, |
382 | { "show", cmd_show, RUN_SETUP | USE_PAGER }, | |
10762323 | 383 | { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE }, |
f754fa9c | 384 | { "stripspace", cmd_stripspace }, |
efffea03 | 385 | { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP }, |
62e09ce9 | 386 | { "tag", cmd_tag, RUN_SETUP }, |
9cb90b80 | 387 | { "tar-tree", cmd_tar_tree }, |
b5325818 | 388 | { "unpack-file", cmd_unpack_file, RUN_SETUP }, |
efffea03 JH |
389 | { "unpack-objects", cmd_unpack_objects, RUN_SETUP }, |
390 | { "update-index", cmd_update_index, RUN_SETUP }, | |
391 | { "update-ref", cmd_update_ref, RUN_SETUP }, | |
53a1116c | 392 | { "update-server-info", cmd_update_server_info, RUN_SETUP }, |
39345a21 | 393 | { "upload-archive", cmd_upload_archive }, |
55b6745d | 394 | { "var", cmd_var }, |
2ae68fcb | 395 | { "verify-tag", cmd_verify_tag, RUN_SETUP }, |
f754fa9c | 396 | { "version", cmd_version }, |
efffea03 JH |
397 | { "whatchanged", cmd_whatchanged, RUN_SETUP | USE_PAGER }, |
398 | { "write-tree", cmd_write_tree, RUN_SETUP }, | |
2e3ed670 | 399 | { "verify-pack", cmd_verify_pack }, |
358ddb62 | 400 | { "show-ref", cmd_show_ref, RUN_SETUP }, |
e1e22e37 | 401 | { "pack-refs", cmd_pack_refs, RUN_SETUP }, |
231af832 LT |
402 | }; |
403 | int i; | |
23326d14 JS |
404 | static const char ext[] = STRIP_EXTENSION; |
405 | ||
406 | if (sizeof(ext) > 1) { | |
407 | i = strlen(argv[0]) - strlen(ext); | |
408 | if (i > 0 && !strcmp(argv[0] + i, ext)) { | |
e8eec71d | 409 | char *argv0 = xstrdup(argv[0]); |
23326d14 JS |
410 | argv[0] = cmd = argv0; |
411 | argv0[i] = '\0'; | |
412 | } | |
413 | } | |
231af832 | 414 | |
1cd95087 LT |
415 | /* Turn "git cmd --help" into "git help cmd" */ |
416 | if (argc > 1 && !strcmp(argv[1], "--help")) { | |
417 | argv[1] = argv[0]; | |
418 | argv[0] = cmd = "help"; | |
419 | } | |
420 | ||
231af832 LT |
421 | for (i = 0; i < ARRAY_SIZE(commands); i++) { |
422 | struct cmd_struct *p = commands+i; | |
423 | if (strcmp(p->cmd, cmd)) | |
424 | continue; | |
f172f334 | 425 | exit(run_builtin(p, argc, argv)); |
231af832 LT |
426 | } |
427 | } | |
428 | ||
7550be0a JH |
429 | static void execv_dashed_external(const char **argv) |
430 | { | |
f285a2d7 | 431 | struct strbuf cmd = STRBUF_INIT; |
7550be0a | 432 | const char *tmp; |
d8e96fd8 | 433 | int status; |
7550be0a | 434 | |
7550be0a JH |
435 | strbuf_addf(&cmd, "git-%s", argv[0]); |
436 | ||
437 | /* | |
438 | * argv[0] must be the git command, but the argv array | |
439 | * belongs to the caller, and may be reused in | |
440 | * subsequent loop iterations. Save argv[0] and | |
441 | * restore it on error. | |
442 | */ | |
443 | tmp = argv[0]; | |
444 | argv[0] = cmd.buf; | |
445 | ||
446 | trace_argv_printf(argv, "trace: exec:"); | |
447 | ||
d8e96fd8 JK |
448 | /* |
449 | * if we fail because the command is not found, it is | |
450 | * OK to return. Otherwise, we just pass along the status code. | |
451 | */ | |
c024beb5 | 452 | status = run_command_v_opt(argv, RUN_SILENT_EXEC_FAILURE); |
0ac77ec3 | 453 | if (status >= 0 || errno != ENOENT) |
5709e036 | 454 | exit(status); |
7550be0a JH |
455 | |
456 | argv[0] = tmp; | |
457 | ||
458 | strbuf_release(&cmd); | |
459 | } | |
460 | ||
a907e1b6 AS |
461 | static int run_argv(int *argcp, const char ***argv) |
462 | { | |
463 | int done_alias = 0; | |
464 | ||
465 | while (1) { | |
466 | /* See if it's an internal command */ | |
467 | handle_internal_command(*argcp, *argv); | |
468 | ||
469 | /* .. then try the external ones */ | |
470 | execv_dashed_external(*argv); | |
471 | ||
472 | /* It could be an alias -- this works around the insanity | |
473 | * of overriding "git log" with "git show" by having | |
474 | * alias.log = show | |
475 | */ | |
476 | if (done_alias || !handle_alias(argcp, argv)) | |
477 | break; | |
478 | done_alias = 1; | |
479 | } | |
480 | ||
481 | return done_alias; | |
482 | } | |
483 | ||
7550be0a | 484 | |
47d0b4ff | 485 | int main(int argc, const char **argv) |
8e49d503 | 486 | { |
4dd47c3b | 487 | const char *cmd; |
231af832 | 488 | |
2cd72b0b SP |
489 | cmd = git_extract_argv0_path(argv[0]); |
490 | if (!cmd) | |
4dd47c3b | 491 | cmd = "git-help"; |
8e49d503 | 492 | |
231af832 LT |
493 | /* |
494 | * "git-xxxx" is the same as "git xxxx", but we obviously: | |
495 | * | |
496 | * - cannot take flags in between the "git" and the "xxxx". | |
497 | * - cannot execute it externally (since it would just do | |
498 | * the same thing over again) | |
499 | * | |
500 | * So we just directly call the internal command handler, and | |
501 | * die if that one cannot handle it. | |
502 | */ | |
cc44c765 | 503 | if (!prefixcmp(cmd, "git-")) { |
231af832 LT |
504 | cmd += 4; |
505 | argv[0] = cmd; | |
47d0b4ff | 506 | handle_internal_command(argc, argv); |
231af832 LT |
507 | die("cannot handle %s internally", cmd); |
508 | } | |
8e49d503 | 509 | |
231af832 | 510 | /* Look for flags.. */ |
6acbcb92 JS |
511 | argv++; |
512 | argc--; | |
4394efec | 513 | handle_options(&argv, &argc, NULL); |
4e10738a | 514 | commit_pager_choice(); |
6acbcb92 | 515 | if (argc > 0) { |
cc44c765 | 516 | if (!prefixcmp(argv[0], "--")) |
6acbcb92 JS |
517 | argv[0] += 2; |
518 | } else { | |
3d7e2d85 SP |
519 | /* The user didn't specify a command; give them help */ |
520 | printf("usage: %s\n\n", git_usage_string); | |
521 | list_common_cmds_help(); | |
b7d96819 | 522 | printf("\n%s\n", git_more_info_string); |
3d7e2d85 | 523 | exit(1); |
97fc6c5f | 524 | } |
6acbcb92 | 525 | cmd = argv[0]; |
231af832 LT |
526 | |
527 | /* | |
511707d4 | 528 | * We use PATH to find git commands, but we prepend some higher |
3ea3c215 | 529 | * precedence paths: the "--exec-path" option, the GIT_EXEC_PATH |
511707d4 SP |
530 | * environment, and the $(gitexecdir) from the Makefile at build |
531 | * time. | |
231af832 | 532 | */ |
e1464ca7 | 533 | setup_path(); |
8e49d503 | 534 | |
a025463b | 535 | while (1) { |
a907e1b6 AS |
536 | static int done_help = 0; |
537 | static int was_alias = 0; | |
538 | was_alias = run_argv(&argc, &argv); | |
539 | if (errno != ENOENT) | |
a025463b | 540 | break; |
a907e1b6 | 541 | if (was_alias) { |
f3dd015c | 542 | fprintf(stderr, "Expansion of alias '%s' failed; " |
7283bbc7 | 543 | "'%s' is not a git command\n", |
f3dd015c TT |
544 | cmd, argv[0]); |
545 | exit(1); | |
546 | } | |
a907e1b6 AS |
547 | if (!done_help) { |
548 | cmd = argv[0] = help_unknown_cmd(cmd); | |
549 | done_help = 1; | |
550 | } else | |
551 | break; | |
f3dd015c | 552 | } |
10b15b86 AR |
553 | |
554 | fprintf(stderr, "Failed to run command '%s': %s\n", | |
33ebb871 | 555 | cmd, strerror(errno)); |
8e49d503 AE |
556 | |
557 | return 1; | |
558 | } |