]>
Commit | Line | Data |
---|---|---|
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[] = |
89a56bfb | 8 | "git [--version] [--exec-path[=GIT_EXEC_PATH]] [--html-path] [-p|--paginate|--no-pager] [--bare] [--git-dir=GIT_DIR] [--work-tree=GIT_WORK_TREE] [--help] COMMAND [ARGS]"; |
822a7d50 | 9 | |
b7d96819 TL |
10 | const char git_more_info_string[] = |
11 | "See 'git help COMMAND' for more information on a specific command."; | |
12 | ||
4e10738a JK |
13 | static int use_pager = -1; |
14 | struct pager_config { | |
15 | const char *cmd; | |
16 | int val; | |
17 | }; | |
18 | ||
19 | static int pager_command_config(const char *var, const char *value, void *data) | |
20 | { | |
21 | struct pager_config *c = data; | |
22 | if (!prefixcmp(var, "pager.") && !strcmp(var + 6, c->cmd)) | |
23 | c->val = git_config_bool(var, value); | |
24 | return 0; | |
25 | } | |
26 | ||
27 | /* returns 0 for "no pager", 1 for "use pager", and -1 for "not specified" */ | |
28 | int check_pager_config(const char *cmd) | |
29 | { | |
30 | struct pager_config c; | |
31 | c.cmd = cmd; | |
32 | c.val = -1; | |
33 | git_config(pager_command_config, &c); | |
34 | return c.val; | |
35 | } | |
36 | ||
37 | static void commit_pager_choice(void) { | |
38 | switch (use_pager) { | |
39 | case 0: | |
40 | setenv("GIT_PAGER", "cat", 1); | |
41 | break; | |
42 | case 1: | |
43 | setup_pager(); | |
44 | break; | |
45 | default: | |
46 | break; | |
47 | } | |
48 | } | |
49 | ||
4b25d091 | 50 | static int handle_options(const char ***argv, int *argc, int *envchanged) |
4ab243a9 JS |
51 | { |
52 | int handled = 0; | |
53 | ||
54 | while (*argc > 0) { | |
55 | const char *cmd = (*argv)[0]; | |
56 | if (cmd[0] != '-') | |
57 | break; | |
58 | ||
6acbcb92 JS |
59 | /* |
60 | * For legacy reasons, the "version" and "help" | |
61 | * commands can be written with "--" prepended | |
62 | * to make them look like flags. | |
63 | */ | |
64 | if (!strcmp(cmd, "--help") || !strcmp(cmd, "--version")) | |
65 | break; | |
66 | ||
67 | /* | |
68 | * Check remaining flags. | |
69 | */ | |
cc44c765 | 70 | if (!prefixcmp(cmd, "--exec-path")) { |
6acbcb92 JS |
71 | cmd += 11; |
72 | if (*cmd == '=') | |
384df833 | 73 | git_set_argv_exec_path(cmd + 1); |
6acbcb92 JS |
74 | else { |
75 | puts(git_exec_path()); | |
76 | exit(0); | |
77 | } | |
89a56bfb MH |
78 | } else if (!strcmp(cmd, "--html-path")) { |
79 | puts(system_path(GIT_HTML_PATH)); | |
80 | exit(0); | |
6acbcb92 | 81 | } else if (!strcmp(cmd, "-p") || !strcmp(cmd, "--paginate")) { |
4e10738a | 82 | use_pager = 1; |
463a849d | 83 | } else if (!strcmp(cmd, "--no-pager")) { |
4e10738a | 84 | use_pager = 0; |
463a849d MM |
85 | if (envchanged) |
86 | *envchanged = 1; | |
6acbcb92 | 87 | } else if (!strcmp(cmd, "--git-dir")) { |
c321f00d BG |
88 | if (*argc < 2) { |
89 | fprintf(stderr, "No directory given for --git-dir.\n" ); | |
90 | usage(git_usage_string); | |
91 | } | |
45b09794 | 92 | setenv(GIT_DIR_ENVIRONMENT, (*argv)[1], 1); |
4394efec ML |
93 | if (envchanged) |
94 | *envchanged = 1; | |
6acbcb92 JS |
95 | (*argv)++; |
96 | (*argc)--; | |
e4b02333 | 97 | handled++; |
cc44c765 | 98 | } else if (!prefixcmp(cmd, "--git-dir=")) { |
45b09794 | 99 | setenv(GIT_DIR_ENVIRONMENT, cmd + 10, 1); |
4394efec ML |
100 | if (envchanged) |
101 | *envchanged = 1; | |
892c41b9 ML |
102 | } else if (!strcmp(cmd, "--work-tree")) { |
103 | if (*argc < 2) { | |
104 | fprintf(stderr, "No directory given for --work-tree.\n" ); | |
105 | usage(git_usage_string); | |
106 | } | |
107 | setenv(GIT_WORK_TREE_ENVIRONMENT, (*argv)[1], 1); | |
4394efec ML |
108 | if (envchanged) |
109 | *envchanged = 1; | |
892c41b9 ML |
110 | (*argv)++; |
111 | (*argc)--; | |
112 | } else if (!prefixcmp(cmd, "--work-tree=")) { | |
113 | setenv(GIT_WORK_TREE_ENVIRONMENT, cmd + 12, 1); | |
4394efec ML |
114 | if (envchanged) |
115 | *envchanged = 1; | |
6acbcb92 | 116 | } else if (!strcmp(cmd, "--bare")) { |
ef5ddb2f | 117 | static char git_dir[PATH_MAX+1]; |
6adcca3f | 118 | is_bare_repository_cfg = 1; |
9277d602 | 119 | setenv(GIT_DIR_ENVIRONMENT, getcwd(git_dir, sizeof(git_dir)), 0); |
4394efec ML |
120 | if (envchanged) |
121 | *envchanged = 1; | |
6acbcb92 JS |
122 | } else { |
123 | fprintf(stderr, "Unknown option: %s\n", cmd); | |
822a7d50 | 124 | usage(git_usage_string); |
6acbcb92 | 125 | } |
4ab243a9 JS |
126 | |
127 | (*argv)++; | |
128 | (*argc)--; | |
129 | handled++; | |
130 | } | |
131 | return handled; | |
132 | } | |
133 | ||
2b11e317 JS |
134 | static int handle_alias(int *argcp, const char ***argv) |
135 | { | |
af05d679 | 136 | int envchanged = 0, ret = 0, saved_errno = errno; |
2b11e317 | 137 | const char *subdir; |
0347a8c7 | 138 | int count, option_count; |
4b25d091 | 139 | const char **new_argv; |
94351118 JK |
140 | const char *alias_command; |
141 | char *alias_string; | |
e85dc0a3 | 142 | int unused_nongit; |
2b11e317 | 143 | |
e85dc0a3 | 144 | subdir = setup_git_directory_gently(&unused_nongit); |
0347a8c7 ML |
145 | |
146 | alias_command = (*argv)[0]; | |
94351118 | 147 | alias_string = alias_lookup(alias_command); |
0347a8c7 | 148 | if (alias_string) { |
dfd42a3c | 149 | if (alias_string[0] == '!') { |
a2f8028d | 150 | if (*argcp > 1) { |
7a33bcbe | 151 | struct strbuf buf; |
a2f8028d | 152 | |
7a33bcbe PH |
153 | strbuf_init(&buf, PATH_MAX); |
154 | strbuf_addstr(&buf, alias_string); | |
b319ce4c | 155 | sq_quote_argv(&buf, (*argv) + 1, PATH_MAX); |
a2f8028d | 156 | free(alias_string); |
7a33bcbe | 157 | alias_string = buf.buf; |
a2f8028d | 158 | } |
dfd42a3c TT |
159 | trace_printf("trace: alias to shell cmd: %s => %s\n", |
160 | alias_command, alias_string + 1); | |
161 | ret = system(alias_string + 1); | |
162 | if (ret >= 0 && WIFEXITED(ret) && | |
163 | WEXITSTATUS(ret) != 127) | |
164 | exit(WEXITSTATUS(ret)); | |
d7530708 | 165 | die("Failed to run '%s' when expanding alias '%s'", |
dfd42a3c TT |
166 | alias_string + 1, alias_command); |
167 | } | |
0347a8c7 | 168 | count = split_cmdline(alias_string, &new_argv); |
dc4179f9 DM |
169 | if (count < 0) |
170 | die("Bad alias.%s string", alias_command); | |
4394efec ML |
171 | option_count = handle_options(&new_argv, &count, &envchanged); |
172 | if (envchanged) | |
173 | die("alias '%s' changes environment variables\n" | |
174 | "You can use '!git' in the alias to do this.", | |
175 | alias_command); | |
0347a8c7 ML |
176 | memmove(new_argv - option_count, new_argv, |
177 | count * sizeof(char *)); | |
178 | new_argv -= option_count; | |
179 | ||
180 | if (count < 1) | |
181 | die("empty alias for %s", alias_command); | |
182 | ||
183 | if (!strcmp(alias_command, new_argv[0])) | |
184 | die("recursive alias: %s", alias_command); | |
185 | ||
b319ce4c | 186 | trace_argv_printf(new_argv, |
6ce4e61f CC |
187 | "trace: alias expansion: %s =>", |
188 | alias_command); | |
575ba9d6 | 189 | |
4b25d091 | 190 | new_argv = xrealloc(new_argv, sizeof(char *) * |
83572c1a | 191 | (count + *argcp + 1)); |
0347a8c7 | 192 | /* insert after command name */ |
4b25d091 | 193 | memcpy(new_argv + count, *argv + 1, sizeof(char *) * *argcp); |
0347a8c7 | 194 | new_argv[count+*argcp] = NULL; |
2b11e317 | 195 | |
0347a8c7 ML |
196 | *argv = new_argv; |
197 | *argcp += count - 1; | |
2b11e317 | 198 | |
0347a8c7 | 199 | ret = 1; |
2b11e317 JS |
200 | } |
201 | ||
7be77de2 AR |
202 | if (subdir && chdir(subdir)) |
203 | die("Cannot change to %s: %s", subdir, strerror(errno)); | |
2b11e317 | 204 | |
47e5c0ca JS |
205 | errno = saved_errno; |
206 | ||
2b11e317 JS |
207 | return ret; |
208 | } | |
209 | ||
70827b15 | 210 | const char git_version_string[] = GIT_VERSION; |
5b84f4d8 | 211 | |
efffea03 JH |
212 | #define RUN_SETUP (1<<0) |
213 | #define USE_PAGER (1<<1) | |
7eff28a9 SP |
214 | /* |
215 | * require working tree to be present -- anything uses this needs | |
216 | * RUN_SETUP for reading from the configuration file. | |
217 | */ | |
7ae3df8c | 218 | #define NEED_WORK_TREE (1<<2) |
a633fca0 | 219 | |
47d0b4ff LT |
220 | struct cmd_struct { |
221 | const char *cmd; | |
222 | int (*fn)(int, const char **, const char *); | |
223 | int option; | |
224 | }; | |
225 | ||
f172f334 | 226 | static int run_builtin(struct cmd_struct *p, int argc, const char **argv) |
47d0b4ff | 227 | { |
0f157315 LT |
228 | int status; |
229 | struct stat st; | |
47d0b4ff LT |
230 | const char *prefix; |
231 | ||
232 | prefix = NULL; | |
233 | if (p->option & RUN_SETUP) | |
234 | prefix = setup_git_directory(); | |
4e10738a JK |
235 | |
236 | if (use_pager == -1 && p->option & RUN_SETUP) | |
237 | use_pager = check_pager_config(p->cmd); | |
238 | if (use_pager == -1 && p->option & USE_PAGER) | |
239 | use_pager = 1; | |
240 | commit_pager_choice(); | |
241 | ||
59f0f2f3 MH |
242 | if (p->option & NEED_WORK_TREE) |
243 | setup_work_tree(); | |
244 | ||
b319ce4c | 245 | trace_argv_printf(argv, "trace: built-in: git"); |
47d0b4ff | 246 | |
0f157315 LT |
247 | status = p->fn(argc, argv, prefix); |
248 | if (status) | |
2488df84 | 249 | return status & 0xff; |
0f157315 LT |
250 | |
251 | /* Somebody closed stdout? */ | |
252 | if (fstat(fileno(stdout), &st)) | |
253 | return 0; | |
254 | /* Ignore write errors for pipes and sockets.. */ | |
255 | if (S_ISFIFO(st.st_mode) || S_ISSOCK(st.st_mode)) | |
256 | return 0; | |
257 | ||
258 | /* Check for ENOSPC and EIO errors.. */ | |
0227f988 | 259 | if (fflush(stdout)) |
0f157315 | 260 | die("write failure on standard output: %s", strerror(errno)); |
0227f988 LT |
261 | if (ferror(stdout)) |
262 | die("unknown write failure on standard output"); | |
263 | if (fclose(stdout)) | |
264 | die("close failed on standard output: %s", strerror(errno)); | |
0f157315 | 265 | return 0; |
47d0b4ff LT |
266 | } |
267 | ||
268 | static void handle_internal_command(int argc, const char **argv) | |
231af832 LT |
269 | { |
270 | const char *cmd = argv[0]; | |
47d0b4ff | 271 | static struct cmd_struct commands[] = { |
7ae3df8c | 272 | { "add", cmd_add, RUN_SETUP | NEED_WORK_TREE }, |
11920d28 | 273 | { "stage", cmd_add, RUN_SETUP | NEED_WORK_TREE }, |
d97bc5de | 274 | { "annotate", cmd_annotate, RUN_SETUP }, |
f754fa9c | 275 | { "apply", cmd_apply }, |
265d5280 | 276 | { "archive", cmd_archive }, |
1bf072e3 | 277 | { "bisect--helper", cmd_bisect__helper, RUN_SETUP | NEED_WORK_TREE }, |
4f0219a4 | 278 | { "blame", cmd_blame, RUN_SETUP }, |
1da1b3a3 | 279 | { "branch", cmd_branch, RUN_SETUP }, |
2e0afafe | 280 | { "bundle", cmd_bundle }, |
efffea03 | 281 | { "cat-file", cmd_cat_file, RUN_SETUP }, |
782c2d65 | 282 | { "checkout", cmd_checkout, RUN_SETUP | NEED_WORK_TREE }, |
4465f410 JS |
283 | { "checkout-index", cmd_checkout_index, |
284 | RUN_SETUP | NEED_WORK_TREE}, | |
0864f264 | 285 | { "check-ref-format", cmd_check_ref_format }, |
2d35d556 | 286 | { "check-attr", cmd_check_attr, RUN_SETUP }, |
e827633a | 287 | { "cherry", cmd_cherry, RUN_SETUP }, |
7ae3df8c | 288 | { "cherry-pick", cmd_cherry_pick, RUN_SETUP | NEED_WORK_TREE }, |
8434c2f1 | 289 | { "clone", cmd_clone }, |
113f10f2 | 290 | { "clean", cmd_clean, RUN_SETUP | NEED_WORK_TREE }, |
f5bbc322 | 291 | { "commit", cmd_commit, RUN_SETUP | NEED_WORK_TREE }, |
efffea03 | 292 | { "commit-tree", cmd_commit_tree, RUN_SETUP }, |
e0d10e1c | 293 | { "config", cmd_config }, |
8112894d | 294 | { "count-objects", cmd_count_objects, RUN_SETUP }, |
9a0eaf83 | 295 | { "describe", cmd_describe, RUN_SETUP }, |
89d07f75 | 296 | { "diff", cmd_diff }, |
4f38f6b5 | 297 | { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE }, |
efffea03 | 298 | { "diff-index", cmd_diff_index, RUN_SETUP }, |
efffea03 | 299 | { "diff-tree", cmd_diff_tree, RUN_SETUP }, |
f2dc849e | 300 | { "fast-export", cmd_fast_export, RUN_SETUP }, |
b888d61c | 301 | { "fetch", cmd_fetch, RUN_SETUP }, |
2d4177c0 | 302 | { "fetch-pack", cmd_fetch_pack, RUN_SETUP }, |
d4289fff | 303 | { "fetch--tool", cmd_fetch__tool, RUN_SETUP }, |
efffea03 | 304 | { "fmt-merge-msg", cmd_fmt_merge_msg, RUN_SETUP }, |
9f613ddd | 305 | { "for-each-ref", cmd_for_each_ref, RUN_SETUP }, |
efffea03 | 306 | { "format-patch", cmd_format_patch, RUN_SETUP }, |
b4dfefe0 MW |
307 | { "fsck", cmd_fsck, RUN_SETUP }, |
308 | { "fsck-objects", cmd_fsck, RUN_SETUP }, | |
6757ada4 | 309 | { "gc", cmd_gc, RUN_SETUP }, |
f754fa9c | 310 | { "get-tar-commit-id", cmd_get_tar_commit_id }, |
34c6a82b | 311 | { "grep", cmd_grep, RUN_SETUP | USE_PAGER }, |
f754fa9c | 312 | { "help", cmd_help }, |
30ae764b DB |
313 | #ifndef NO_CURL |
314 | { "http-fetch", cmd_http_fetch, RUN_SETUP }, | |
315 | #endif | |
515377ea | 316 | { "init", cmd_init_db }, |
f754fa9c | 317 | { "init-db", cmd_init_db }, |
efffea03 JH |
318 | { "log", cmd_log, RUN_SETUP | USE_PAGER }, |
319 | { "ls-files", cmd_ls_files, RUN_SETUP }, | |
320 | { "ls-tree", cmd_ls_tree, RUN_SETUP }, | |
8951d7c1 | 321 | { "ls-remote", cmd_ls_remote }, |
f754fa9c JH |
322 | { "mailinfo", cmd_mailinfo }, |
323 | { "mailsplit", cmd_mailsplit }, | |
1c7b76be | 324 | { "merge", cmd_merge, RUN_SETUP | NEED_WORK_TREE }, |
71dfbf22 | 325 | { "merge-base", cmd_merge_base, RUN_SETUP }, |
ba1f5f35 | 326 | { "merge-file", cmd_merge_file }, |
a00a42ae | 327 | { "merge-ours", cmd_merge_ours, RUN_SETUP }, |
e1b3a2ca | 328 | { "merge-recursive", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
1736855c | 329 | { "merge-subtree", cmd_merge_recursive, RUN_SETUP | NEED_WORK_TREE }, |
633e3556 | 330 | { "mktree", cmd_mktree, RUN_SETUP }, |
7ae3df8c | 331 | { "mv", cmd_mv, RUN_SETUP | NEED_WORK_TREE }, |
efffea03 JH |
332 | { "name-rev", cmd_name_rev, RUN_SETUP }, |
333 | { "pack-objects", cmd_pack_objects, RUN_SETUP }, | |
8951d7c1 | 334 | { "peek-remote", cmd_ls_remote }, |
d97bc5de | 335 | { "pickaxe", cmd_blame, RUN_SETUP }, |
efffea03 JH |
336 | { "prune", cmd_prune, RUN_SETUP }, |
337 | { "prune-packed", cmd_prune_packed, RUN_SETUP }, | |
102cb085 | 338 | { "push", cmd_push, RUN_SETUP }, |
efffea03 | 339 | { "read-tree", cmd_read_tree, RUN_SETUP }, |
be5908ae | 340 | { "receive-pack", cmd_receive_pack }, |
4264dc15 | 341 | { "reflog", cmd_reflog, RUN_SETUP }, |
211c8968 | 342 | { "remote", cmd_remote, RUN_SETUP }, |
e0d10e1c | 343 | { "repo-config", cmd_config }, |
658f3650 | 344 | { "rerere", cmd_rerere, RUN_SETUP }, |
0e5a7faa | 345 | { "reset", cmd_reset, RUN_SETUP }, |
efffea03 | 346 | { "rev-list", cmd_rev_list, RUN_SETUP }, |
5410a02a | 347 | { "rev-parse", cmd_rev_parse }, |
7ae3df8c | 348 | { "revert", cmd_revert, RUN_SETUP | NEED_WORK_TREE }, |
271bb087 | 349 | { "rm", cmd_rm, RUN_SETUP }, |
96249c04 | 350 | { "send-pack", cmd_send_pack, RUN_SETUP }, |
abe549e1 | 351 | { "shortlog", cmd_shortlog, USE_PAGER }, |
efffea03 JH |
352 | { "show-branch", cmd_show_branch, RUN_SETUP }, |
353 | { "show", cmd_show, RUN_SETUP | USE_PAGER }, | |
10762323 | 354 | { "status", cmd_status, RUN_SETUP | NEED_WORK_TREE }, |
f754fa9c | 355 | { "stripspace", cmd_stripspace }, |
efffea03 | 356 | { "symbolic-ref", cmd_symbolic_ref, RUN_SETUP }, |
62e09ce9 | 357 | { "tag", cmd_tag, RUN_SETUP }, |
9cb90b80 | 358 | { "tar-tree", cmd_tar_tree }, |
efffea03 JH |
359 | { "unpack-objects", cmd_unpack_objects, RUN_SETUP }, |
360 | { "update-index", cmd_update_index, RUN_SETUP }, | |
361 | { "update-ref", cmd_update_ref, RUN_SETUP }, | |
39345a21 | 362 | { "upload-archive", cmd_upload_archive }, |
2ae68fcb | 363 | { "verify-tag", cmd_verify_tag, RUN_SETUP }, |
f754fa9c | 364 | { "version", cmd_version }, |
efffea03 JH |
365 | { "whatchanged", cmd_whatchanged, RUN_SETUP | USE_PAGER }, |
366 | { "write-tree", cmd_write_tree, RUN_SETUP }, | |
2e3ed670 | 367 | { "verify-pack", cmd_verify_pack }, |
358ddb62 | 368 | { "show-ref", cmd_show_ref, RUN_SETUP }, |
e1e22e37 | 369 | { "pack-refs", cmd_pack_refs, RUN_SETUP }, |
231af832 LT |
370 | }; |
371 | int i; | |
23326d14 JS |
372 | static const char ext[] = STRIP_EXTENSION; |
373 | ||
374 | if (sizeof(ext) > 1) { | |
375 | i = strlen(argv[0]) - strlen(ext); | |
376 | if (i > 0 && !strcmp(argv[0] + i, ext)) { | |
e8eec71d | 377 | char *argv0 = xstrdup(argv[0]); |
23326d14 JS |
378 | argv[0] = cmd = argv0; |
379 | argv0[i] = '\0'; | |
380 | } | |
381 | } | |
231af832 | 382 | |
1cd95087 LT |
383 | /* Turn "git cmd --help" into "git help cmd" */ |
384 | if (argc > 1 && !strcmp(argv[1], "--help")) { | |
385 | argv[1] = argv[0]; | |
386 | argv[0] = cmd = "help"; | |
387 | } | |
388 | ||
231af832 LT |
389 | for (i = 0; i < ARRAY_SIZE(commands); i++) { |
390 | struct cmd_struct *p = commands+i; | |
391 | if (strcmp(p->cmd, cmd)) | |
392 | continue; | |
f172f334 | 393 | exit(run_builtin(p, argc, argv)); |
231af832 LT |
394 | } |
395 | } | |
396 | ||
7550be0a JH |
397 | static void execv_dashed_external(const char **argv) |
398 | { | |
f285a2d7 | 399 | struct strbuf cmd = STRBUF_INIT; |
7550be0a | 400 | const char *tmp; |
d8e96fd8 | 401 | int status; |
7550be0a | 402 | |
7550be0a JH |
403 | strbuf_addf(&cmd, "git-%s", argv[0]); |
404 | ||
405 | /* | |
406 | * argv[0] must be the git command, but the argv array | |
407 | * belongs to the caller, and may be reused in | |
408 | * subsequent loop iterations. Save argv[0] and | |
409 | * restore it on error. | |
410 | */ | |
411 | tmp = argv[0]; | |
412 | argv[0] = cmd.buf; | |
413 | ||
414 | trace_argv_printf(argv, "trace: exec:"); | |
415 | ||
d8e96fd8 JK |
416 | /* |
417 | * if we fail because the command is not found, it is | |
418 | * OK to return. Otherwise, we just pass along the status code. | |
419 | */ | |
420 | status = run_command_v_opt(argv, 0); | |
421 | if (status != -ERR_RUN_COMMAND_EXEC) { | |
422 | if (IS_RUN_COMMAND_ERR(status)) | |
423 | die("unable to run '%s'", argv[0]); | |
424 | exit(-status); | |
425 | } | |
426 | errno = ENOENT; /* as if we called execvp */ | |
7550be0a JH |
427 | |
428 | argv[0] = tmp; | |
429 | ||
430 | strbuf_release(&cmd); | |
431 | } | |
432 | ||
a907e1b6 AS |
433 | static int run_argv(int *argcp, const char ***argv) |
434 | { | |
435 | int done_alias = 0; | |
436 | ||
437 | while (1) { | |
438 | /* See if it's an internal command */ | |
439 | handle_internal_command(*argcp, *argv); | |
440 | ||
441 | /* .. then try the external ones */ | |
442 | execv_dashed_external(*argv); | |
443 | ||
444 | /* It could be an alias -- this works around the insanity | |
445 | * of overriding "git log" with "git show" by having | |
446 | * alias.log = show | |
447 | */ | |
448 | if (done_alias || !handle_alias(argcp, argv)) | |
449 | break; | |
450 | done_alias = 1; | |
451 | } | |
452 | ||
453 | return done_alias; | |
454 | } | |
455 | ||
7550be0a | 456 | |
47d0b4ff | 457 | int main(int argc, const char **argv) |
8e49d503 | 458 | { |
4dd47c3b | 459 | const char *cmd; |
231af832 | 460 | |
2cd72b0b SP |
461 | cmd = git_extract_argv0_path(argv[0]); |
462 | if (!cmd) | |
4dd47c3b | 463 | cmd = "git-help"; |
8e49d503 | 464 | |
231af832 LT |
465 | /* |
466 | * "git-xxxx" is the same as "git xxxx", but we obviously: | |
467 | * | |
468 | * - cannot take flags in between the "git" and the "xxxx". | |
469 | * - cannot execute it externally (since it would just do | |
470 | * the same thing over again) | |
471 | * | |
472 | * So we just directly call the internal command handler, and | |
473 | * die if that one cannot handle it. | |
474 | */ | |
cc44c765 | 475 | if (!prefixcmp(cmd, "git-")) { |
231af832 LT |
476 | cmd += 4; |
477 | argv[0] = cmd; | |
47d0b4ff | 478 | handle_internal_command(argc, argv); |
231af832 LT |
479 | die("cannot handle %s internally", cmd); |
480 | } | |
8e49d503 | 481 | |
231af832 | 482 | /* Look for flags.. */ |
6acbcb92 JS |
483 | argv++; |
484 | argc--; | |
4394efec | 485 | handle_options(&argv, &argc, NULL); |
4e10738a | 486 | commit_pager_choice(); |
6acbcb92 | 487 | if (argc > 0) { |
cc44c765 | 488 | if (!prefixcmp(argv[0], "--")) |
6acbcb92 JS |
489 | argv[0] += 2; |
490 | } else { | |
3d7e2d85 SP |
491 | /* The user didn't specify a command; give them help */ |
492 | printf("usage: %s\n\n", git_usage_string); | |
493 | list_common_cmds_help(); | |
b7d96819 | 494 | printf("\n%s\n", git_more_info_string); |
3d7e2d85 | 495 | exit(1); |
97fc6c5f | 496 | } |
6acbcb92 | 497 | cmd = argv[0]; |
231af832 LT |
498 | |
499 | /* | |
511707d4 | 500 | * We use PATH to find git commands, but we prepend some higher |
3ea3c215 | 501 | * precedence paths: the "--exec-path" option, the GIT_EXEC_PATH |
511707d4 SP |
502 | * environment, and the $(gitexecdir) from the Makefile at build |
503 | * time. | |
231af832 | 504 | */ |
e1464ca7 | 505 | setup_path(); |
8e49d503 | 506 | |
a025463b | 507 | while (1) { |
a907e1b6 AS |
508 | static int done_help = 0; |
509 | static int was_alias = 0; | |
510 | was_alias = run_argv(&argc, &argv); | |
511 | if (errno != ENOENT) | |
a025463b | 512 | break; |
a907e1b6 | 513 | if (was_alias) { |
f3dd015c TT |
514 | fprintf(stderr, "Expansion of alias '%s' failed; " |
515 | "'%s' is not a git-command\n", | |
516 | cmd, argv[0]); | |
517 | exit(1); | |
518 | } | |
a907e1b6 AS |
519 | if (!done_help) { |
520 | cmd = argv[0] = help_unknown_cmd(cmd); | |
521 | done_help = 1; | |
522 | } else | |
523 | break; | |
f3dd015c | 524 | } |
10b15b86 AR |
525 | |
526 | fprintf(stderr, "Failed to run command '%s': %s\n", | |
33ebb871 | 527 | cmd, strerror(errno)); |
8e49d503 AE |
528 | |
529 | return 1; | |
530 | } |