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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" |
8e49d503 | 5 | |
822a7d50 | 6 | const char git_usage_string[] = |
463a849d | 7 | "git [--version] [--exec-path[=GIT_EXEC_PATH]] [-p|--paginate|--no-pager] [--bare] [--git-dir=GIT_DIR] [--work-tree=GIT_WORK_TREE] [--help] COMMAND [ARGS]"; |
822a7d50 | 8 | |
b7d96819 TL |
9 | const char git_more_info_string[] = |
10 | "See 'git help COMMAND' for more information on a specific command."; | |
11 | ||
4e10738a JK |
12 | static int use_pager = -1; |
13 | struct pager_config { | |
14 | const char *cmd; | |
15 | int val; | |
16 | }; | |
17 | ||
18 | static int pager_command_config(const char *var, const char *value, void *data) | |
19 | { | |
20 | struct pager_config *c = data; | |
21 | if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd)) | |
22 | c->val = git_config_bool(var, value); | |
23 | return 0; | |
24 | } | |
25 | ||
26 | /* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */ | |
27 | int check_pager_config(const char *cmd) | |
28 | { | |
29 | struct pager_config c; | |
30 | c.cmd = cmd; | |
31 | c.val = -1; | |
32 | git_config(pager_command_config, &c); | |
33 | return c.val; | |
34 | } | |
35 | ||
36 | static void commit_pager_choice(void) { | |
37 | switch (use_pager) { | |
38 | case 0: | |
39 | setenv("GIT_PAGER", "cat", 1); | |
40 | break; | |
41 | case 1: | |
42 | setup_pager(); | |
43 | break; | |
44 | default: | |
45 | break; | |
46 | } | |
47 | } | |
48 | ||
4394efec | 49 | static int handle_options(const char*** argv, int* argc, int* envchanged) |
4ab243a9 JS |
50 | { |
51 | int handled = 0; | |
52 | ||
53 | while (*argc > 0) { | |
54 | const char *cmd = (*argv)[0]; | |
55 | if (cmd[0] != '-') | |
56 | break; | |
57 | ||
6acbcb92 JS |
58 | /* |
59 | * For legacy reasons, the "version" and "help" | |
60 | * commands can be written with "--" prepended | |
61 | * to make them look like flags. | |
62 | */ | |
63 | if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version")) | |
64 | break; | |
65 | ||
66 | /* | |
67 | * Check remaining flags. | |
68 | */ | |
cc44c765 | 69 | if (!prefixcmp(cmd, "--exec-path")) { |
6acbcb92 JS |
70 | cmd += 11; |
71 | if (*cmd == '=') | |
384df833 | 72 | git_set_argv_exec_path(cmd + 1); |
6acbcb92 JS |
73 | else { |
74 | puts(git_exec_path()); | |
75 | exit(0); | |
76 | } | |
77 | } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) { | |
4e10738a | 78 | use_pager = 1; |
463a849d | 79 | } else if (!strcmp(cmd, "--no-pager")) { |
4e10738a | 80 | use_pager = 0; |
463a849d MM |
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)--; | |
e4b02333 | 93 | handled++; |
cc44c765 | 94 | } else if (!prefixcmp(cmd, "--git-dir=")) { |
45b09794 | 95 | setenv(GIT_DIR_ENVIRONMENT, cmd + 10, 1); |
4394efec ML |
96 | if (envchanged) |
97 | *envchanged = 1; | |
892c41b9 ML |
98 | } else if (!strcmp(cmd, "--work-tree")) { |
99 | if (*argc < 2) { | |
100 | fprintf(stderr, "No directory given for --work-tree.\n" ); | |
101 | usage(git_usage_string); | |
102 | } | |
103 | setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1); | |
4394efec ML |
104 | if (envchanged) |
105 | *envchanged = 1; | |
892c41b9 ML |
106 | (*argv)++; |
107 | (*argc)--; | |
108 | } else if (!prefixcmp(cmd, "--work-tree=")) { | |
109 | setenv(GIT_WORK_TREE_ENVIRONMENT, cmd + 12, 1); | |
4394efec ML |
110 | if (envchanged) |
111 | *envchanged = 1; | |
6acbcb92 | 112 | } else if (!strcmp(cmd, "--bare")) { |
ef5ddb2f | 113 | static char git_dir[PATH_MAX+1]; |
6adcca3f | 114 | is_bare_repository_cfg = 1; |
9277d602 | 115 | setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 0); |
4394efec ML |
116 | if (envchanged) |
117 | *envchanged = 1; | |
6acbcb92 JS |
118 | } else { |
119 | fprintf(stderr, "Unknown option: %s\n", cmd); | |
822a7d50 | 120 | usage(git_usage_string); |
6acbcb92 | 121 | } |
4ab243a9 JS |
122 | |
123 | (*argv)++; | |
124 | (*argc)--; | |
125 | handled++; | |
126 | } | |
127 | return handled; | |
128 | } | |
129 | ||
2b11e317 JS |
130 | static int handle_alias(int *argcp, const char ***argv) |
131 | { | |
af05d679 | 132 | int envchanged = 0, ret = 0, saved_errno = errno; |
2b11e317 | 133 | const char *subdir; |
0347a8c7 ML |
134 | int count, option_count; |
135 | const char** new_argv; | |
94351118 JK |
136 | const char *alias_command; |
137 | char *alias_string; | |
e85dc0a3 | 138 | int unused_nongit; |
2b11e317 | 139 | |
e85dc0a3 | 140 | subdir = setup_git_directory_gently(&unused_nongit); |
0347a8c7 ML |
141 | |
142 | alias_command = (*argv)[0]; | |
94351118 | 143 | alias_string = alias_lookup(alias_command); |
0347a8c7 | 144 | if (alias_string) { |
dfd42a3c | 145 | if (alias_string[0] == '!') { |
a2f8028d | 146 | if (*argcp > 1) { |
7a33bcbe | 147 | struct strbuf buf; |
a2f8028d | 148 | |
7a33bcbe PH |
149 | strbuf_init(&buf, PATH_MAX); |
150 | strbuf_addstr(&buf, alias_string); | |
b319ce4c | 151 | sq_quote_argv(&buf, (*argv) + 1, PATH_MAX); |
a2f8028d | 152 | free(alias_string); |
7a33bcbe | 153 | alias_string = buf.buf; |
a2f8028d | 154 | } |
dfd42a3c TT |
155 | trace_printf("trace: alias to shell cmd: %s => %s\n", |
156 | alias_command, alias_string + 1); | |
157 | ret = system(alias_string + 1); | |
158 | if (ret >= 0 && WIFEXITED(ret) && | |
159 | WEXITSTATUS(ret) != 127) | |
160 | exit(WEXITSTATUS(ret)); | |
161 | die("Failed to run '%s' when expanding alias '%s'\n", | |
162 | alias_string + 1, alias_command); | |
163 | } | |
0347a8c7 | 164 | count = split_cmdline(alias_string, &new_argv); |
dc4179f9 DM |
165 | if (count < 0) |
166 | die("Bad alias.%s string", alias_command); | |
4394efec ML |
167 | option_count = handle_options(&new_argv, &count, &envchanged); |
168 | if (envchanged) | |
169 | die("alias '%s' changes environment variables\n" | |
170 | "You can use '!git' in the alias to do this.", | |
171 | alias_command); | |
0347a8c7 ML |
172 | memmove(new_argv - option_count, new_argv, |
173 | count * sizeof(char *)); | |
174 | new_argv -= option_count; | |
175 | ||
176 | if (count < 1) | |
177 | die("empty alias for %s", alias_command); | |
178 | ||
179 | if (!strcmp(alias_command, new_argv[0])) | |
180 | die("recursive alias: %s", alias_command); | |
181 | ||
b319ce4c | 182 | trace_argv_printf(new_argv, |
6ce4e61f CC |
183 | "trace: alias expansion: %s =>", |
184 | alias_command); | |
575ba9d6 | 185 | |
83572c1a JF |
186 | new_argv = xrealloc(new_argv, sizeof(char*) * |
187 | (count + *argcp + 1)); | |
0347a8c7 ML |
188 | /* insert after command name */ |
189 | memcpy(new_argv + count, *argv + 1, sizeof(char*) * *argcp); | |
190 | new_argv[count+*argcp] = NULL; | |
2b11e317 | 191 | |
0347a8c7 ML |
192 | *argv = new_argv; |
193 | *argcp += count - 1; | |
2b11e317 | 194 | |
0347a8c7 | 195 | ret = 1; |
2b11e317 JS |
196 | } |
197 | ||
7be77de2 AR |
198 | if (subdir && chdir(subdir)) |
199 | die("Cannot change to %s: %s", subdir, strerror(errno)); | |
2b11e317 | 200 | |
47e5c0ca JS |
201 | errno = saved_errno; |
202 | ||
2b11e317 JS |
203 | return ret; |
204 | } | |
205 | ||
70827b15 | 206 | const char git_version_string[] = GIT_VERSION; |
5b84f4d8 | 207 | |
efffea03 JH |
208 | #define RUN_SETUP (1<<0) |
209 | #define USE_PAGER (1<<1) | |
7eff28a9 SP |
210 | /* |
211 | * require working tree to be present -- anything uses this needs | |
212 | * RUN_SETUP for reading from the configuration file. | |
213 | */ | |
7ae3df8c | 214 | #define NEED_WORK_TREE (1<<2) |
a633fca0 | 215 | |
47d0b4ff LT |
216 | struct cmd_struct { |
217 | const char *cmd; | |
218 | int (*fn)(int, const char **, const char *); | |
219 | int option; | |
220 | }; | |
221 | ||
222 | static int run_command(struct cmd_struct *p, int argc, const char **argv) | |
223 | { | |
0f157315 LT |
224 | int status; |
225 | struct stat st; | |
47d0b4ff LT |
226 | const char *prefix; |
227 | ||
228 | prefix = NULL; | |
229 | if (p->option & RUN_SETUP) | |
230 | prefix = setup_git_directory(); | |
4e10738a JK |
231 | |
232 | if (use_pager == -1 && p->option & RUN_SETUP) | |
233 | use_pager = check_pager_config(p->cmd); | |
234 | if (use_pager == -1 && p->option & USE_PAGER) | |
235 | use_pager = 1; | |
236 | commit_pager_choice(); | |
237 | ||
59f0f2f3 MH |
238 | if (p->option & NEED_WORK_TREE) |
239 | setup_work_tree(); | |
240 | ||
b319ce4c | 241 | trace_argv_printf(argv, "trace: built-in: git"); |
47d0b4ff | 242 | |
0f157315 LT |
243 | status = p->fn(argc, argv, prefix); |
244 | if (status) | |
2488df84 | 245 | return status & 0xff; |
0f157315 LT |
246 | |
247 | /* Somebody closed stdout? */ | |
248 | if (fstat(fileno(stdout), &st)) | |
249 | return 0; | |
250 | /* Ignore write errors for pipes and sockets.. */ | |
251 | if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) | |
252 | return 0; | |
253 | ||
254 | /* Check for ENOSPC and EIO errors.. */ | |
0227f988 | 255 | if (fflush(stdout)) |
0f157315 | 256 | die("write failure on standard output: %s", strerror(errno)); |
0227f988 LT |
257 | if (ferror(stdout)) |
258 | die("unknown write failure on standard output"); | |
259 | if (fclose(stdout)) | |
260 | die("close failed on standard output: %s", strerror(errno)); | |
0f157315 | 261 | return 0; |
47d0b4ff LT |
262 | } |
263 | ||
264 | static void handle_internal_command(int argc, const char **argv) | |
231af832 LT |
265 | { |
266 | const char *cmd = argv[0]; | |
47d0b4ff | 267 | static struct cmd_struct commands[] = { |
7ae3df8c | 268 | { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE }, |
11920d28 | 269 | { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE }, |
d97bc5de | 270 | { "annotate", cmd_annotate, RUN_SETUP }, |
f754fa9c | 271 | { "apply", cmd_apply }, |
265d5280 | 272 | { "archive", cmd_archive }, |
4f0219a4 | 273 | { "blame", cmd_blame, RUN_SETUP }, |
1da1b3a3 | 274 | { "branch", cmd_branch, RUN_SETUP }, |
2e0afafe | 275 | { "bundle", cmd_bundle }, |
efffea03 | 276 | { "cat-file", cmd_cat_file, RUN_SETUP }, |
782c2d65 | 277 | { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE }, |
4465f410 JS |
278 | { "checkout-index", cmd_checkout_index, |
279 | RUN_SETUP | NEED_WORK_TREE}, | |
0864f264 | 280 | { "check-ref-format", cmd_check_ref_format }, |
2d35d556 | 281 | { "check-attr", cmd_check_attr, RUN_SETUP }, |
e827633a | 282 | { "cherry", cmd_cherry, RUN_SETUP }, |
7ae3df8c | 283 | { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE }, |
8434c2f1 | 284 | { "clone", cmd_clone }, |
113f10f2 | 285 | { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE }, |
f5bbc322 | 286 | { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE }, |
efffea03 | 287 | { "commit-tree", cmd_commit_tree, RUN_SETUP }, |
e0d10e1c | 288 | { "config", cmd_config }, |
8112894d | 289 | { "count-objects", cmd_count_objects, RUN_SETUP }, |
9a0eaf83 | 290 | { "describe", cmd_describe, RUN_SETUP }, |
89d07f75 | 291 | { "diff", cmd_diff }, |
4f38f6b5 | 292 | { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE }, |
efffea03 | 293 | { "diff-index", cmd_diff_index, RUN_SETUP }, |
efffea03 | 294 | { "diff-tree", cmd_diff_tree, RUN_SETUP }, |
f2dc849e | 295 | { "fast-export", cmd_fast_export, RUN_SETUP }, |
b888d61c | 296 | { "fetch", cmd_fetch, RUN_SETUP }, |
2d4177c0 | 297 | { "fetch-pack", cmd_fetch_pack, RUN_SETUP }, |
d4289fff | 298 | { "fetch--tool", cmd_fetch__tool, RUN_SETUP }, |
efffea03 | 299 | { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP }, |
9f613ddd | 300 | { "for-each-ref", cmd_for_each_ref, RUN_SETUP }, |
efffea03 | 301 | { "format-patch", cmd_format_patch, RUN_SETUP }, |
b4dfefe0 MW |
302 | { "fsck", cmd_fsck, RUN_SETUP }, |
303 | { "fsck-objects", cmd_fsck, RUN_SETUP }, | |
6757ada4 | 304 | { "gc", cmd_gc, RUN_SETUP }, |
f754fa9c | 305 | { "get-tar-commit-id", cmd_get_tar_commit_id }, |
34c6a82b | 306 | { "grep", cmd_grep, RUN_SETUP | USE_PAGER }, |
f754fa9c | 307 | { "help", cmd_help }, |
30ae764b DB |
308 | #ifndef NO_CURL |
309 | { "http-fetch", cmd_http_fetch, RUN_SETUP }, | |
310 | #endif | |
515377ea | 311 | { "init", cmd_init_db }, |
f754fa9c | 312 | { "init-db", cmd_init_db }, |
efffea03 JH |
313 | { "log", cmd_log, RUN_SETUP | USE_PAGER }, |
314 | { "ls-files", cmd_ls_files, RUN_SETUP }, | |
315 | { "ls-tree", cmd_ls_tree, RUN_SETUP }, | |
8951d7c1 | 316 | { "ls-remote", cmd_ls_remote }, |
f754fa9c JH |
317 | { "mailinfo", cmd_mailinfo }, |
318 | { "mailsplit", cmd_mailsplit }, | |
1c7b76be | 319 | { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE }, |
71dfbf22 | 320 | { "merge-base", cmd_merge_base, RUN_SETUP }, |
ba1f5f35 | 321 | { "merge-file", cmd_merge_file }, |
a00a42ae | 322 | { "merge-ours", cmd_merge_ours, RUN_SETUP }, |
e1b3a2ca | 323 | { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
1736855c | 324 | { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
7ae3df8c | 325 | { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE }, |
efffea03 JH |
326 | { "name-rev", cmd_name_rev, RUN_SETUP }, |
327 | { "pack-objects", cmd_pack_objects, RUN_SETUP }, | |
8951d7c1 | 328 | { "peek-remote", cmd_ls_remote }, |
d97bc5de | 329 | { "pickaxe", cmd_blame, RUN_SETUP }, |
efffea03 JH |
330 | { "prune", cmd_prune, RUN_SETUP }, |
331 | { "prune-packed", cmd_prune_packed, RUN_SETUP }, | |
102cb085 | 332 | { "push", cmd_push, RUN_SETUP }, |
efffea03 | 333 | { "read-tree", cmd_read_tree, RUN_SETUP }, |
be5908ae | 334 | { "receive-pack", cmd_receive_pack }, |
4264dc15 | 335 | { "reflog", cmd_reflog, RUN_SETUP }, |
211c8968 | 336 | { "remote", cmd_remote, RUN_SETUP }, |
e0d10e1c | 337 | { "repo-config", cmd_config }, |
658f3650 | 338 | { "rerere", cmd_rerere, RUN_SETUP }, |
0e5a7faa | 339 | { "reset", cmd_reset, RUN_SETUP }, |
efffea03 | 340 | { "rev-list", cmd_rev_list, RUN_SETUP }, |
5410a02a | 341 | { "rev-parse", cmd_rev_parse }, |
7ae3df8c | 342 | { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE }, |
271bb087 | 343 | { "rm", cmd_rm, RUN_SETUP }, |
96249c04 | 344 | { "send-pack", cmd_send_pack, RUN_SETUP }, |
abe549e1 | 345 | { "shortlog", cmd_shortlog, USE_PAGER }, |
efffea03 JH |
346 | { "show-branch", cmd_show_branch, RUN_SETUP }, |
347 | { "show", cmd_show, RUN_SETUP | USE_PAGER }, | |
10762323 | 348 | { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE }, |
f754fa9c | 349 | { "stripspace", cmd_stripspace }, |
efffea03 | 350 | { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP }, |
62e09ce9 | 351 | { "tag", cmd_tag, RUN_SETUP }, |
9cb90b80 | 352 | { "tar-tree", cmd_tar_tree }, |
efffea03 JH |
353 | { "unpack-objects", cmd_unpack_objects, RUN_SETUP }, |
354 | { "update-index", cmd_update_index, RUN_SETUP }, | |
355 | { "update-ref", cmd_update_ref, RUN_SETUP }, | |
39345a21 | 356 | { "upload-archive", cmd_upload_archive }, |
2ae68fcb | 357 | { "verify-tag", cmd_verify_tag, RUN_SETUP }, |
f754fa9c | 358 | { "version", cmd_version }, |
efffea03 JH |
359 | { "whatchanged", cmd_whatchanged, RUN_SETUP | USE_PAGER }, |
360 | { "write-tree", cmd_write_tree, RUN_SETUP }, | |
2e3ed670 | 361 | { "verify-pack", cmd_verify_pack }, |
358ddb62 | 362 | { "show-ref", cmd_show_ref, RUN_SETUP }, |
e1e22e37 | 363 | { "pack-refs", cmd_pack_refs, RUN_SETUP }, |
231af832 LT |
364 | }; |
365 | int i; | |
23326d14 JS |
366 | static const char ext[] = STRIP_EXTENSION; |
367 | ||
368 | if (sizeof(ext) > 1) { | |
369 | i = strlen(argv[0]) - strlen(ext); | |
370 | if (i > 0 && !strcmp(argv[0] + i, ext)) { | |
e8eec71d | 371 | char *argv0 = xstrdup(argv[0]); |
23326d14 JS |
372 | argv[0] = cmd = argv0; |
373 | argv0[i] = '\0'; | |
374 | } | |
375 | } | |
231af832 | 376 | |
1cd95087 LT |
377 | /* Turn "git cmd --help" into "git help cmd" */ |
378 | if (argc > 1 && !strcmp(argv[1], "--help")) { | |
379 | argv[1] = argv[0]; | |
380 | argv[0] = cmd = "help"; | |
381 | } | |
382 | ||
231af832 LT |
383 | for (i = 0; i < ARRAY_SIZE(commands); i++) { |
384 | struct cmd_struct *p = commands+i; | |
385 | if (strcmp(p->cmd, cmd)) | |
386 | continue; | |
47d0b4ff | 387 | exit(run_command(p, argc, argv)); |
231af832 LT |
388 | } |
389 | } | |
390 | ||
7550be0a JH |
391 | static void execv_dashed_external(const char **argv) |
392 | { | |
f285a2d7 | 393 | struct strbuf cmd = STRBUF_INIT; |
7550be0a JH |
394 | const char *tmp; |
395 | ||
7550be0a JH |
396 | strbuf_addf(&cmd, "git-%s", argv[0]); |
397 | ||
398 | /* | |
399 | * argv[0] must be the git command, but the argv array | |
400 | * belongs to the caller, and may be reused in | |
401 | * subsequent loop iterations. Save argv[0] and | |
402 | * restore it on error. | |
403 | */ | |
404 | tmp = argv[0]; | |
405 | argv[0] = cmd.buf; | |
406 | ||
407 | trace_argv_printf(argv, "trace: exec:"); | |
408 | ||
409 | /* execvp() can only ever return if it fails */ | |
410 | execvp(cmd.buf, (char **)argv); | |
411 | ||
412 | trace_printf("trace: exec failed: %s\n", strerror(errno)); | |
413 | ||
414 | argv[0] = tmp; | |
415 | ||
416 | strbuf_release(&cmd); | |
417 | } | |
418 | ||
419 | ||
47d0b4ff | 420 | int main(int argc, const char **argv) |
8e49d503 | 421 | { |
23326d14 JS |
422 | const char *cmd = argv[0] && *argv[0] ? argv[0] : "git-help"; |
423 | char *slash = (char *)cmd + strlen(cmd); | |
a025463b | 424 | int done_alias = 0; |
231af832 LT |
425 | |
426 | /* | |
427 | * Take the basename of argv[0] as the command | |
428 | * name, and the dirname as the default exec_path | |
43db492a | 429 | * if we don't have anything better. |
231af832 | 430 | */ |
cca17048 JS |
431 | while (cmd <= slash && !is_dir_sep(*slash)) |
432 | slash--; | |
23326d14 | 433 | if (cmd <= slash) { |
231af832 | 434 | *slash++ = 0; |
e1464ca7 | 435 | git_set_argv0_path(cmd); |
231af832 LT |
436 | cmd = slash; |
437 | } | |
8e49d503 | 438 | |
231af832 LT |
439 | /* |
440 | * "git-xxxx" is the same as "git xxxx", but we obviously: | |
441 | * | |
442 | * - cannot take flags in between the "git" and the "xxxx". | |
443 | * - cannot execute it externally (since it would just do | |
444 | * the same thing over again) | |
445 | * | |
446 | * So we just directly call the internal command handler, and | |
447 | * die if that one cannot handle it. | |
448 | */ | |
cc44c765 | 449 | if (!prefixcmp(cmd, "git-")) { |
231af832 LT |
450 | cmd += 4; |
451 | argv[0] = cmd; | |
47d0b4ff | 452 | handle_internal_command(argc, argv); |
231af832 LT |
453 | die("cannot handle %s internally", cmd); |
454 | } | |
8e49d503 | 455 | |
231af832 | 456 | /* Look for flags.. */ |
6acbcb92 JS |
457 | argv++; |
458 | argc--; | |
4394efec | 459 | handle_options(&argv, &argc, NULL); |
4e10738a | 460 | commit_pager_choice(); |
6acbcb92 | 461 | if (argc > 0) { |
cc44c765 | 462 | if (!prefixcmp(argv[0], "--")) |
6acbcb92 JS |
463 | argv[0] += 2; |
464 | } else { | |
3d7e2d85 SP |
465 | /* The user didn't specify a command; give them help */ |
466 | printf("usage: %s\n\n", git_usage_string); | |
467 | list_common_cmds_help(); | |
b7d96819 | 468 | printf("\n%s\n", git_more_info_string); |
3d7e2d85 | 469 | exit(1); |
97fc6c5f | 470 | } |
6acbcb92 | 471 | cmd = argv[0]; |
231af832 LT |
472 | |
473 | /* | |
511707d4 SP |
474 | * We use PATH to find git commands, but we prepend some higher |
475 | * precidence paths: the "--exec-path" option, the GIT_EXEC_PATH | |
476 | * environment, and the $(gitexecdir) from the Makefile at build | |
477 | * time. | |
231af832 | 478 | */ |
e1464ca7 | 479 | setup_path(); |
8e49d503 | 480 | |
a025463b JH |
481 | while (1) { |
482 | /* See if it's an internal command */ | |
47d0b4ff | 483 | handle_internal_command(argc, argv); |
2b11e317 | 484 | |
a025463b | 485 | /* .. then try the external ones */ |
7550be0a | 486 | execv_dashed_external(argv); |
231af832 | 487 | |
a025463b JH |
488 | /* It could be an alias -- this works around the insanity |
489 | * of overriding "git log" with "git show" by having | |
490 | * alias.log = show | |
491 | */ | |
492 | if (done_alias || !handle_alias(&argc, &argv)) | |
493 | break; | |
494 | done_alias = 1; | |
495 | } | |
10b15b86 | 496 | |
f3dd015c TT |
497 | if (errno == ENOENT) { |
498 | if (done_alias) { | |
499 | fprintf(stderr, "Expansion of alias '%s' failed; " | |
500 | "'%s' is not a git-command\n", | |
501 | cmd, argv[0]); | |
502 | exit(1); | |
503 | } | |
8af84dad JS |
504 | argv[0] = help_unknown_cmd(cmd); |
505 | handle_internal_command(argc, argv); | |
506 | execv_dashed_external(argv); | |
f3dd015c | 507 | } |
10b15b86 AR |
508 | |
509 | fprintf(stderr, "Failed to run command '%s': %s\n", | |
33ebb871 | 510 | cmd, strerror(errno)); |
8e49d503 AE |
511 | |
512 | return 1; | |
513 | } |