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1 | #include "cache.h" | |
2 | #include "config.h" | |
3 | #include "builtin.h" | |
4 | #include "exec-cmd.h" | |
5 | #include "run-command.h" | |
6 | #include "levenshtein.h" | |
7 | #include "help.h" | |
8 | #include "command-list.h" | |
9 | #include "string-list.h" | |
10 | #include "column.h" | |
11 | #include "version.h" | |
12 | #include "refs.h" | |
13 | #include "parse-options.h" | |
14 | ||
15 | struct category_description { | |
16 | uint32_t category; | |
17 | const char *desc; | |
18 | }; | |
19 | static uint32_t common_mask = | |
20 | CAT_init | CAT_worktree | CAT_info | | |
21 | CAT_history | CAT_remote; | |
22 | static struct category_description common_categories[] = { | |
23 | { CAT_init, N_("start a working area (see also: git help tutorial)") }, | |
24 | { CAT_worktree, N_("work on the current change (see also: git help everyday)") }, | |
25 | { CAT_info, N_("examine the history and state (see also: git help revisions)") }, | |
26 | { CAT_history, N_("grow, mark and tweak your common history") }, | |
27 | { CAT_remote, N_("collaborate (see also: git help workflows)") }, | |
28 | { 0, NULL } | |
29 | }; | |
30 | static struct category_description main_categories[] = { | |
31 | { CAT_mainporcelain, N_("Main Porcelain Commands") }, | |
32 | { CAT_ancillarymanipulators, N_("Ancillary Commands / Manipulators") }, | |
33 | { CAT_ancillaryinterrogators, N_("Ancillary Commands / Interrogators") }, | |
34 | { CAT_foreignscminterface, N_("Interacting with Others") }, | |
35 | { CAT_plumbingmanipulators, N_("Low-level Commands / Manipulators") }, | |
36 | { CAT_plumbinginterrogators, N_("Low-level Commands / Interrogators") }, | |
37 | { CAT_synchingrepositories, N_("Low-level Commands / Synching Repositories") }, | |
38 | { CAT_purehelpers, N_("Low-level Commands / Internal Helpers") }, | |
39 | { 0, NULL } | |
40 | }; | |
41 | ||
42 | static const char *drop_prefix(const char *name, uint32_t category) | |
43 | { | |
44 | const char *new_name; | |
45 | ||
46 | if (skip_prefix(name, "git-", &new_name)) | |
47 | return new_name; | |
48 | if (category == CAT_guide && skip_prefix(name, "git", &new_name)) | |
49 | return new_name; | |
50 | return name; | |
51 | ||
52 | } | |
53 | ||
54 | static void extract_cmds(struct cmdname_help **p_cmds, uint32_t mask) | |
55 | { | |
56 | int i, nr = 0; | |
57 | struct cmdname_help *cmds; | |
58 | ||
59 | if (ARRAY_SIZE(command_list) == 0) | |
60 | BUG("empty command_list[] is a sign of broken generate-cmdlist.sh"); | |
61 | ||
62 | ALLOC_ARRAY(cmds, ARRAY_SIZE(command_list) + 1); | |
63 | ||
64 | for (i = 0; i < ARRAY_SIZE(command_list); i++) { | |
65 | const struct cmdname_help *cmd = command_list + i; | |
66 | ||
67 | if (!(cmd->category & mask)) | |
68 | continue; | |
69 | ||
70 | cmds[nr] = *cmd; | |
71 | cmds[nr].name = drop_prefix(cmd->name, cmd->category); | |
72 | ||
73 | nr++; | |
74 | } | |
75 | cmds[nr].name = NULL; | |
76 | *p_cmds = cmds; | |
77 | } | |
78 | ||
79 | static void print_command_list(const struct cmdname_help *cmds, | |
80 | uint32_t mask, int longest) | |
81 | { | |
82 | int i; | |
83 | ||
84 | for (i = 0; cmds[i].name; i++) { | |
85 | if (cmds[i].category & mask) { | |
86 | size_t len = strlen(cmds[i].name); | |
87 | printf(" %s ", cmds[i].name); | |
88 | if (longest > len) | |
89 | mput_char(' ', longest - len); | |
90 | puts(_(cmds[i].help)); | |
91 | } | |
92 | } | |
93 | } | |
94 | ||
95 | static int cmd_name_cmp(const void *elem1, const void *elem2) | |
96 | { | |
97 | const struct cmdname_help *e1 = elem1; | |
98 | const struct cmdname_help *e2 = elem2; | |
99 | ||
100 | return strcmp(e1->name, e2->name); | |
101 | } | |
102 | ||
103 | static void print_cmd_by_category(const struct category_description *catdesc, | |
104 | int *longest_p) | |
105 | { | |
106 | struct cmdname_help *cmds; | |
107 | int longest = 0; | |
108 | int i, nr = 0; | |
109 | uint32_t mask = 0; | |
110 | ||
111 | for (i = 0; catdesc[i].desc; i++) | |
112 | mask |= catdesc[i].category; | |
113 | ||
114 | extract_cmds(&cmds, mask); | |
115 | ||
116 | for (i = 0; cmds[i].name; i++, nr++) { | |
117 | if (longest < strlen(cmds[i].name)) | |
118 | longest = strlen(cmds[i].name); | |
119 | } | |
120 | QSORT(cmds, nr, cmd_name_cmp); | |
121 | ||
122 | for (i = 0; catdesc[i].desc; i++) { | |
123 | uint32_t mask = catdesc[i].category; | |
124 | const char *desc = catdesc[i].desc; | |
125 | ||
126 | printf("\n%s\n", _(desc)); | |
127 | print_command_list(cmds, mask, longest); | |
128 | } | |
129 | free(cmds); | |
130 | if (longest_p) | |
131 | *longest_p = longest; | |
132 | } | |
133 | ||
134 | void add_cmdname(struct cmdnames *cmds, const char *name, int len) | |
135 | { | |
136 | struct cmdname *ent; | |
137 | FLEX_ALLOC_MEM(ent, name, name, len); | |
138 | ent->len = len; | |
139 | ||
140 | ALLOC_GROW(cmds->names, cmds->cnt + 1, cmds->alloc); | |
141 | cmds->names[cmds->cnt++] = ent; | |
142 | } | |
143 | ||
144 | static void clean_cmdnames(struct cmdnames *cmds) | |
145 | { | |
146 | int i; | |
147 | for (i = 0; i < cmds->cnt; ++i) | |
148 | free(cmds->names[i]); | |
149 | free(cmds->names); | |
150 | cmds->cnt = 0; | |
151 | cmds->alloc = 0; | |
152 | } | |
153 | ||
154 | static int cmdname_compare(const void *a_, const void *b_) | |
155 | { | |
156 | struct cmdname *a = *(struct cmdname **)a_; | |
157 | struct cmdname *b = *(struct cmdname **)b_; | |
158 | return strcmp(a->name, b->name); | |
159 | } | |
160 | ||
161 | static void uniq(struct cmdnames *cmds) | |
162 | { | |
163 | int i, j; | |
164 | ||
165 | if (!cmds->cnt) | |
166 | return; | |
167 | ||
168 | for (i = j = 1; i < cmds->cnt; i++) { | |
169 | if (!strcmp(cmds->names[i]->name, cmds->names[j-1]->name)) | |
170 | free(cmds->names[i]); | |
171 | else | |
172 | cmds->names[j++] = cmds->names[i]; | |
173 | } | |
174 | ||
175 | cmds->cnt = j; | |
176 | } | |
177 | ||
178 | void exclude_cmds(struct cmdnames *cmds, struct cmdnames *excludes) | |
179 | { | |
180 | int ci, cj, ei; | |
181 | int cmp; | |
182 | ||
183 | ci = cj = ei = 0; | |
184 | while (ci < cmds->cnt && ei < excludes->cnt) { | |
185 | cmp = strcmp(cmds->names[ci]->name, excludes->names[ei]->name); | |
186 | if (cmp < 0) | |
187 | cmds->names[cj++] = cmds->names[ci++]; | |
188 | else if (cmp == 0) { | |
189 | ei++; | |
190 | free(cmds->names[ci++]); | |
191 | } else if (cmp > 0) | |
192 | ei++; | |
193 | } | |
194 | ||
195 | while (ci < cmds->cnt) | |
196 | cmds->names[cj++] = cmds->names[ci++]; | |
197 | ||
198 | cmds->cnt = cj; | |
199 | } | |
200 | ||
201 | static void pretty_print_cmdnames(struct cmdnames *cmds, unsigned int colopts) | |
202 | { | |
203 | struct string_list list = STRING_LIST_INIT_NODUP; | |
204 | struct column_options copts; | |
205 | int i; | |
206 | ||
207 | for (i = 0; i < cmds->cnt; i++) | |
208 | string_list_append(&list, cmds->names[i]->name); | |
209 | /* | |
210 | * always enable column display, we only consult column.* | |
211 | * about layout strategy and stuff | |
212 | */ | |
213 | colopts = (colopts & ~COL_ENABLE_MASK) | COL_ENABLED; | |
214 | memset(&copts, 0, sizeof(copts)); | |
215 | copts.indent = " "; | |
216 | copts.padding = 2; | |
217 | print_columns(&list, colopts, &copts); | |
218 | string_list_clear(&list, 0); | |
219 | } | |
220 | ||
221 | static void list_commands_in_dir(struct cmdnames *cmds, | |
222 | const char *path, | |
223 | const char *prefix) | |
224 | { | |
225 | DIR *dir = opendir(path); | |
226 | struct dirent *de; | |
227 | struct strbuf buf = STRBUF_INIT; | |
228 | int len; | |
229 | ||
230 | if (!dir) | |
231 | return; | |
232 | if (!prefix) | |
233 | prefix = "git-"; | |
234 | ||
235 | strbuf_addf(&buf, "%s/", path); | |
236 | len = buf.len; | |
237 | ||
238 | while ((de = readdir(dir)) != NULL) { | |
239 | const char *ent; | |
240 | size_t entlen; | |
241 | ||
242 | if (!skip_prefix(de->d_name, prefix, &ent)) | |
243 | continue; | |
244 | ||
245 | strbuf_setlen(&buf, len); | |
246 | strbuf_addstr(&buf, de->d_name); | |
247 | if (!is_executable(buf.buf)) | |
248 | continue; | |
249 | ||
250 | entlen = strlen(ent); | |
251 | strip_suffix(ent, ".exe", &entlen); | |
252 | ||
253 | add_cmdname(cmds, ent, entlen); | |
254 | } | |
255 | closedir(dir); | |
256 | strbuf_release(&buf); | |
257 | } | |
258 | ||
259 | void load_command_list(const char *prefix, | |
260 | struct cmdnames *main_cmds, | |
261 | struct cmdnames *other_cmds) | |
262 | { | |
263 | const char *env_path = getenv("PATH"); | |
264 | const char *exec_path = git_exec_path(); | |
265 | ||
266 | if (exec_path) { | |
267 | list_commands_in_dir(main_cmds, exec_path, prefix); | |
268 | QSORT(main_cmds->names, main_cmds->cnt, cmdname_compare); | |
269 | uniq(main_cmds); | |
270 | } | |
271 | ||
272 | if (env_path) { | |
273 | char *paths, *path, *colon; | |
274 | path = paths = xstrdup(env_path); | |
275 | while (1) { | |
276 | if ((colon = strchr(path, PATH_SEP))) | |
277 | *colon = 0; | |
278 | if (!exec_path || strcmp(path, exec_path)) | |
279 | list_commands_in_dir(other_cmds, path, prefix); | |
280 | ||
281 | if (!colon) | |
282 | break; | |
283 | path = colon + 1; | |
284 | } | |
285 | free(paths); | |
286 | ||
287 | QSORT(other_cmds->names, other_cmds->cnt, cmdname_compare); | |
288 | uniq(other_cmds); | |
289 | } | |
290 | exclude_cmds(other_cmds, main_cmds); | |
291 | } | |
292 | ||
293 | void list_commands(unsigned int colopts, | |
294 | struct cmdnames *main_cmds, struct cmdnames *other_cmds) | |
295 | { | |
296 | if (main_cmds->cnt) { | |
297 | const char *exec_path = git_exec_path(); | |
298 | printf_ln(_("available git commands in '%s'"), exec_path); | |
299 | putchar('\n'); | |
300 | pretty_print_cmdnames(main_cmds, colopts); | |
301 | putchar('\n'); | |
302 | } | |
303 | ||
304 | if (other_cmds->cnt) { | |
305 | printf_ln(_("git commands available from elsewhere on your $PATH")); | |
306 | putchar('\n'); | |
307 | pretty_print_cmdnames(other_cmds, colopts); | |
308 | putchar('\n'); | |
309 | } | |
310 | } | |
311 | ||
312 | void list_common_cmds_help(void) | |
313 | { | |
314 | puts(_("These are common Git commands used in various situations:")); | |
315 | print_cmd_by_category(common_categories, NULL); | |
316 | } | |
317 | ||
318 | void list_all_main_cmds(struct string_list *list) | |
319 | { | |
320 | struct cmdnames main_cmds, other_cmds; | |
321 | int i; | |
322 | ||
323 | memset(&main_cmds, 0, sizeof(main_cmds)); | |
324 | memset(&other_cmds, 0, sizeof(other_cmds)); | |
325 | load_command_list("git-", &main_cmds, &other_cmds); | |
326 | ||
327 | for (i = 0; i < main_cmds.cnt; i++) | |
328 | string_list_append(list, main_cmds.names[i]->name); | |
329 | ||
330 | clean_cmdnames(&main_cmds); | |
331 | clean_cmdnames(&other_cmds); | |
332 | } | |
333 | ||
334 | void list_all_other_cmds(struct string_list *list) | |
335 | { | |
336 | struct cmdnames main_cmds, other_cmds; | |
337 | int i; | |
338 | ||
339 | memset(&main_cmds, 0, sizeof(main_cmds)); | |
340 | memset(&other_cmds, 0, sizeof(other_cmds)); | |
341 | load_command_list("git-", &main_cmds, &other_cmds); | |
342 | ||
343 | for (i = 0; i < other_cmds.cnt; i++) | |
344 | string_list_append(list, other_cmds.names[i]->name); | |
345 | ||
346 | clean_cmdnames(&main_cmds); | |
347 | clean_cmdnames(&other_cmds); | |
348 | } | |
349 | ||
350 | void list_cmds_by_category(struct string_list *list, | |
351 | const char *cat) | |
352 | { | |
353 | int i, n = ARRAY_SIZE(command_list); | |
354 | uint32_t cat_id = 0; | |
355 | ||
356 | for (i = 0; category_names[i]; i++) { | |
357 | if (!strcmp(cat, category_names[i])) { | |
358 | cat_id = 1UL << i; | |
359 | break; | |
360 | } | |
361 | } | |
362 | if (!cat_id) | |
363 | die(_("unsupported command listing type '%s'"), cat); | |
364 | ||
365 | for (i = 0; i < n; i++) { | |
366 | struct cmdname_help *cmd = command_list + i; | |
367 | ||
368 | if (!(cmd->category & cat_id)) | |
369 | continue; | |
370 | string_list_append(list, drop_prefix(cmd->name, cmd->category)); | |
371 | } | |
372 | } | |
373 | ||
374 | void list_cmds_by_config(struct string_list *list) | |
375 | { | |
376 | const char *cmd_list; | |
377 | ||
378 | if (git_config_get_string_const("completion.commands", &cmd_list)) | |
379 | return; | |
380 | ||
381 | string_list_sort(list); | |
382 | string_list_remove_duplicates(list, 0); | |
383 | ||
384 | while (*cmd_list) { | |
385 | struct strbuf sb = STRBUF_INIT; | |
386 | const char *p = strchrnul(cmd_list, ' '); | |
387 | ||
388 | strbuf_add(&sb, cmd_list, p - cmd_list); | |
389 | if (sb.buf[0] == '-') | |
390 | string_list_remove(list, sb.buf + 1, 0); | |
391 | else | |
392 | string_list_insert(list, sb.buf); | |
393 | strbuf_release(&sb); | |
394 | while (*p == ' ') | |
395 | p++; | |
396 | cmd_list = p; | |
397 | } | |
398 | } | |
399 | ||
400 | void list_common_guides_help(void) | |
401 | { | |
402 | struct category_description catdesc[] = { | |
403 | { CAT_guide, N_("The common Git guides are:") }, | |
404 | { 0, NULL } | |
405 | }; | |
406 | print_cmd_by_category(catdesc, NULL); | |
407 | putchar('\n'); | |
408 | } | |
409 | ||
410 | struct slot_expansion { | |
411 | const char *prefix; | |
412 | const char *placeholder; | |
413 | void (*fn)(struct string_list *list, const char *prefix); | |
414 | int found; | |
415 | }; | |
416 | ||
417 | void list_config_help(int for_human) | |
418 | { | |
419 | struct slot_expansion slot_expansions[] = { | |
420 | { "advice", "*", list_config_advices }, | |
421 | { "color.branch", "<slot>", list_config_color_branch_slots }, | |
422 | { "color.decorate", "<slot>", list_config_color_decorate_slots }, | |
423 | { "color.diff", "<slot>", list_config_color_diff_slots }, | |
424 | { "color.grep", "<slot>", list_config_color_grep_slots }, | |
425 | { "color.interactive", "<slot>", list_config_color_interactive_slots }, | |
426 | { "color.remote", "<slot>", list_config_color_sideband_slots }, | |
427 | { "color.status", "<slot>", list_config_color_status_slots }, | |
428 | { "fsck", "<msg-id>", list_config_fsck_msg_ids }, | |
429 | { "receive.fsck", "<msg-id>", list_config_fsck_msg_ids }, | |
430 | { NULL, NULL, NULL } | |
431 | }; | |
432 | const char **p; | |
433 | struct slot_expansion *e; | |
434 | struct string_list keys = STRING_LIST_INIT_DUP; | |
435 | int i; | |
436 | ||
437 | for (p = config_name_list; *p; p++) { | |
438 | const char *var = *p; | |
439 | struct strbuf sb = STRBUF_INIT; | |
440 | ||
441 | for (e = slot_expansions; e->prefix; e++) { | |
442 | ||
443 | strbuf_reset(&sb); | |
444 | strbuf_addf(&sb, "%s.%s", e->prefix, e->placeholder); | |
445 | if (!strcasecmp(var, sb.buf)) { | |
446 | e->fn(&keys, e->prefix); | |
447 | e->found++; | |
448 | break; | |
449 | } | |
450 | } | |
451 | strbuf_release(&sb); | |
452 | if (!e->prefix) | |
453 | string_list_append(&keys, var); | |
454 | } | |
455 | ||
456 | for (e = slot_expansions; e->prefix; e++) | |
457 | if (!e->found) | |
458 | BUG("slot_expansion %s.%s is not used", | |
459 | e->prefix, e->placeholder); | |
460 | ||
461 | string_list_sort(&keys); | |
462 | for (i = 0; i < keys.nr; i++) { | |
463 | const char *var = keys.items[i].string; | |
464 | const char *wildcard, *tag, *cut; | |
465 | ||
466 | if (for_human) { | |
467 | puts(var); | |
468 | continue; | |
469 | } | |
470 | ||
471 | wildcard = strchr(var, '*'); | |
472 | tag = strchr(var, '<'); | |
473 | ||
474 | if (!wildcard && !tag) { | |
475 | puts(var); | |
476 | continue; | |
477 | } | |
478 | ||
479 | if (wildcard && !tag) | |
480 | cut = wildcard; | |
481 | else if (!wildcard && tag) | |
482 | cut = tag; | |
483 | else | |
484 | cut = wildcard < tag ? wildcard : tag; | |
485 | ||
486 | /* | |
487 | * We may produce duplicates, but that's up to | |
488 | * git-completion.bash to handle | |
489 | */ | |
490 | printf("%.*s\n", (int)(cut - var), var); | |
491 | } | |
492 | string_list_clear(&keys, 0); | |
493 | } | |
494 | ||
495 | static int get_alias(const char *var, const char *value, void *data) | |
496 | { | |
497 | struct string_list *list = data; | |
498 | ||
499 | if (skip_prefix(var, "alias.", &var)) | |
500 | string_list_append(list, var)->util = xstrdup(value); | |
501 | ||
502 | return 0; | |
503 | } | |
504 | ||
505 | void list_all_cmds_help(void) | |
506 | { | |
507 | struct string_list others = STRING_LIST_INIT_DUP; | |
508 | struct string_list alias_list = STRING_LIST_INIT_DUP; | |
509 | struct cmdname_help *aliases; | |
510 | int i, longest; | |
511 | ||
512 | printf_ln(_("See 'git help <command>' to read about a specific subcommand")); | |
513 | print_cmd_by_category(main_categories, &longest); | |
514 | ||
515 | list_all_other_cmds(&others); | |
516 | if (others.nr) | |
517 | printf("\n%s\n", _("External commands")); | |
518 | for (i = 0; i < others.nr; i++) | |
519 | printf(" %s\n", others.items[i].string); | |
520 | string_list_clear(&others, 0); | |
521 | ||
522 | git_config(get_alias, &alias_list); | |
523 | string_list_sort(&alias_list); | |
524 | ||
525 | for (i = 0; i < alias_list.nr; i++) { | |
526 | size_t len = strlen(alias_list.items[i].string); | |
527 | if (longest < len) | |
528 | longest = len; | |
529 | } | |
530 | ||
531 | if (alias_list.nr) { | |
532 | printf("\n%s\n", _("Command aliases")); | |
533 | ALLOC_ARRAY(aliases, alias_list.nr + 1); | |
534 | for (i = 0; i < alias_list.nr; i++) { | |
535 | aliases[i].name = alias_list.items[i].string; | |
536 | aliases[i].help = alias_list.items[i].util; | |
537 | aliases[i].category = 1; | |
538 | } | |
539 | aliases[alias_list.nr].name = NULL; | |
540 | print_command_list(aliases, 1, longest); | |
541 | free(aliases); | |
542 | } | |
543 | string_list_clear(&alias_list, 1); | |
544 | } | |
545 | ||
546 | int is_in_cmdlist(struct cmdnames *c, const char *s) | |
547 | { | |
548 | int i; | |
549 | for (i = 0; i < c->cnt; i++) | |
550 | if (!strcmp(s, c->names[i]->name)) | |
551 | return 1; | |
552 | return 0; | |
553 | } | |
554 | ||
555 | static int autocorrect; | |
556 | static struct cmdnames aliases; | |
557 | ||
558 | static int git_unknown_cmd_config(const char *var, const char *value, void *cb) | |
559 | { | |
560 | const char *p; | |
561 | ||
562 | if (!strcmp(var, "help.autocorrect")) | |
563 | autocorrect = git_config_int(var,value); | |
564 | /* Also use aliases for command lookup */ | |
565 | if (skip_prefix(var, "alias.", &p)) | |
566 | add_cmdname(&aliases, p, strlen(p)); | |
567 | ||
568 | return git_default_config(var, value, cb); | |
569 | } | |
570 | ||
571 | static int levenshtein_compare(const void *p1, const void *p2) | |
572 | { | |
573 | const struct cmdname *const *c1 = p1, *const *c2 = p2; | |
574 | const char *s1 = (*c1)->name, *s2 = (*c2)->name; | |
575 | int l1 = (*c1)->len; | |
576 | int l2 = (*c2)->len; | |
577 | return l1 != l2 ? l1 - l2 : strcmp(s1, s2); | |
578 | } | |
579 | ||
580 | static void add_cmd_list(struct cmdnames *cmds, struct cmdnames *old) | |
581 | { | |
582 | int i; | |
583 | ALLOC_GROW(cmds->names, cmds->cnt + old->cnt, cmds->alloc); | |
584 | ||
585 | for (i = 0; i < old->cnt; i++) | |
586 | cmds->names[cmds->cnt++] = old->names[i]; | |
587 | FREE_AND_NULL(old->names); | |
588 | old->cnt = 0; | |
589 | } | |
590 | ||
591 | /* An empirically derived magic number */ | |
592 | #define SIMILARITY_FLOOR 7 | |
593 | #define SIMILAR_ENOUGH(x) ((x) < SIMILARITY_FLOOR) | |
594 | ||
595 | static const char bad_interpreter_advice[] = | |
596 | N_("'%s' appears to be a git command, but we were not\n" | |
597 | "able to execute it. Maybe git-%s is broken?"); | |
598 | ||
599 | const char *help_unknown_cmd(const char *cmd) | |
600 | { | |
601 | int i, n, best_similarity = 0; | |
602 | struct cmdnames main_cmds, other_cmds; | |
603 | struct cmdname_help *common_cmds; | |
604 | ||
605 | memset(&main_cmds, 0, sizeof(main_cmds)); | |
606 | memset(&other_cmds, 0, sizeof(other_cmds)); | |
607 | memset(&aliases, 0, sizeof(aliases)); | |
608 | ||
609 | read_early_config(git_unknown_cmd_config, NULL); | |
610 | ||
611 | load_command_list("git-", &main_cmds, &other_cmds); | |
612 | ||
613 | add_cmd_list(&main_cmds, &aliases); | |
614 | add_cmd_list(&main_cmds, &other_cmds); | |
615 | QSORT(main_cmds.names, main_cmds.cnt, cmdname_compare); | |
616 | uniq(&main_cmds); | |
617 | ||
618 | extract_cmds(&common_cmds, common_mask); | |
619 | ||
620 | /* This abuses cmdname->len for levenshtein distance */ | |
621 | for (i = 0, n = 0; i < main_cmds.cnt; i++) { | |
622 | int cmp = 0; /* avoid compiler stupidity */ | |
623 | const char *candidate = main_cmds.names[i]->name; | |
624 | ||
625 | /* | |
626 | * An exact match means we have the command, but | |
627 | * for some reason exec'ing it gave us ENOENT; probably | |
628 | * it's a bad interpreter in the #! line. | |
629 | */ | |
630 | if (!strcmp(candidate, cmd)) | |
631 | die(_(bad_interpreter_advice), cmd, cmd); | |
632 | ||
633 | /* Does the candidate appear in common_cmds list? */ | |
634 | while (common_cmds[n].name && | |
635 | (cmp = strcmp(common_cmds[n].name, candidate)) < 0) | |
636 | n++; | |
637 | if (common_cmds[n].name && !cmp) { | |
638 | /* Yes, this is one of the common commands */ | |
639 | n++; /* use the entry from common_cmds[] */ | |
640 | if (starts_with(candidate, cmd)) { | |
641 | /* Give prefix match a very good score */ | |
642 | main_cmds.names[i]->len = 0; | |
643 | continue; | |
644 | } | |
645 | } | |
646 | ||
647 | main_cmds.names[i]->len = | |
648 | levenshtein(cmd, candidate, 0, 2, 1, 3) + 1; | |
649 | } | |
650 | FREE_AND_NULL(common_cmds); | |
651 | ||
652 | QSORT(main_cmds.names, main_cmds.cnt, levenshtein_compare); | |
653 | ||
654 | if (!main_cmds.cnt) | |
655 | die(_("Uh oh. Your system reports no Git commands at all.")); | |
656 | ||
657 | /* skip and count prefix matches */ | |
658 | for (n = 0; n < main_cmds.cnt && !main_cmds.names[n]->len; n++) | |
659 | ; /* still counting */ | |
660 | ||
661 | if (main_cmds.cnt <= n) { | |
662 | /* prefix matches with everything? that is too ambiguous */ | |
663 | best_similarity = SIMILARITY_FLOOR + 1; | |
664 | } else { | |
665 | /* count all the most similar ones */ | |
666 | for (best_similarity = main_cmds.names[n++]->len; | |
667 | (n < main_cmds.cnt && | |
668 | best_similarity == main_cmds.names[n]->len); | |
669 | n++) | |
670 | ; /* still counting */ | |
671 | } | |
672 | if (autocorrect && n == 1 && SIMILAR_ENOUGH(best_similarity)) { | |
673 | const char *assumed = main_cmds.names[0]->name; | |
674 | main_cmds.names[0] = NULL; | |
675 | clean_cmdnames(&main_cmds); | |
676 | fprintf_ln(stderr, | |
677 | _("WARNING: You called a Git command named '%s', " | |
678 | "which does not exist."), | |
679 | cmd); | |
680 | if (autocorrect < 0) | |
681 | fprintf_ln(stderr, | |
682 | _("Continuing under the assumption that " | |
683 | "you meant '%s'."), | |
684 | assumed); | |
685 | else { | |
686 | fprintf_ln(stderr, | |
687 | _("Continuing in %0.1f seconds, " | |
688 | "assuming that you meant '%s'."), | |
689 | (float)autocorrect/10.0, assumed); | |
690 | sleep_millisec(autocorrect * 100); | |
691 | } | |
692 | return assumed; | |
693 | } | |
694 | ||
695 | fprintf_ln(stderr, _("git: '%s' is not a git command. See 'git --help'."), cmd); | |
696 | ||
697 | if (SIMILAR_ENOUGH(best_similarity)) { | |
698 | fprintf_ln(stderr, | |
699 | Q_("\nThe most similar command is", | |
700 | "\nThe most similar commands are", | |
701 | n)); | |
702 | ||
703 | for (i = 0; i < n; i++) | |
704 | fprintf(stderr, "\t%s\n", main_cmds.names[i]->name); | |
705 | } | |
706 | ||
707 | exit(1); | |
708 | } | |
709 | ||
710 | int cmd_version(int argc, const char **argv, const char *prefix) | |
711 | { | |
712 | int build_options = 0; | |
713 | const char * const usage[] = { | |
714 | N_("git version [<options>]"), | |
715 | NULL | |
716 | }; | |
717 | struct option options[] = { | |
718 | OPT_BOOL(0, "build-options", &build_options, | |
719 | "also print build options"), | |
720 | OPT_END() | |
721 | }; | |
722 | ||
723 | argc = parse_options(argc, argv, prefix, options, usage, 0); | |
724 | ||
725 | /* | |
726 | * The format of this string should be kept stable for compatibility | |
727 | * with external projects that rely on the output of "git version". | |
728 | * | |
729 | * Always show the version, even if other options are given. | |
730 | */ | |
731 | printf("git version %s\n", git_version_string); | |
732 | ||
733 | if (build_options) { | |
734 | printf("cpu: %s\n", GIT_HOST_CPU); | |
735 | if (git_built_from_commit_string[0]) | |
736 | printf("built from commit: %s\n", | |
737 | git_built_from_commit_string); | |
738 | else | |
739 | printf("no commit associated with this build\n"); | |
740 | printf("sizeof-long: %d\n", (int)sizeof(long)); | |
741 | printf("sizeof-size_t: %d\n", (int)sizeof(size_t)); | |
742 | /* NEEDSWORK: also save and output GIT-BUILD_OPTIONS? */ | |
743 | } | |
744 | return 0; | |
745 | } | |
746 | ||
747 | struct similar_ref_cb { | |
748 | const char *base_ref; | |
749 | struct string_list *similar_refs; | |
750 | }; | |
751 | ||
752 | static int append_similar_ref(const char *refname, const struct object_id *oid, | |
753 | int flags, void *cb_data) | |
754 | { | |
755 | struct similar_ref_cb *cb = (struct similar_ref_cb *)(cb_data); | |
756 | char *branch = strrchr(refname, '/') + 1; | |
757 | ||
758 | /* A remote branch of the same name is deemed similar */ | |
759 | if (starts_with(refname, "refs/remotes/") && | |
760 | !strcmp(branch, cb->base_ref)) | |
761 | string_list_append_nodup(cb->similar_refs, | |
762 | shorten_unambiguous_ref(refname, 1)); | |
763 | return 0; | |
764 | } | |
765 | ||
766 | static struct string_list guess_refs(const char *ref) | |
767 | { | |
768 | struct similar_ref_cb ref_cb; | |
769 | struct string_list similar_refs = STRING_LIST_INIT_DUP; | |
770 | ||
771 | ref_cb.base_ref = ref; | |
772 | ref_cb.similar_refs = &similar_refs; | |
773 | for_each_ref(append_similar_ref, &ref_cb); | |
774 | return similar_refs; | |
775 | } | |
776 | ||
777 | void help_unknown_ref(const char *ref, const char *cmd, const char *error) | |
778 | { | |
779 | int i; | |
780 | struct string_list suggested_refs = guess_refs(ref); | |
781 | ||
782 | fprintf_ln(stderr, _("%s: %s - %s"), cmd, ref, error); | |
783 | ||
784 | if (suggested_refs.nr > 0) { | |
785 | fprintf_ln(stderr, | |
786 | Q_("\nDid you mean this?", | |
787 | "\nDid you mean one of these?", | |
788 | suggested_refs.nr)); | |
789 | for (i = 0; i < suggested_refs.nr; i++) | |
790 | fprintf(stderr, "\t%s\n", suggested_refs.items[i].string); | |
791 | } | |
792 | ||
793 | string_list_clear(&suggested_refs, 0); | |
794 | exit(1); | |
795 | } |