add 'git credential' plumbing command
[git/git.git] / builtin / config.c
1 #include "builtin.h"
2 #include "cache.h"
3 #include "color.h"
4 #include "parse-options.h"
5
6 static const char *const builtin_config_usage[] = {
7 "git config [options]",
8 NULL
9 };
10
11 static char *key;
12 static regex_t *key_regexp;
13 static regex_t *regexp;
14 static int show_keys;
15 static int use_key_regexp;
16 static int do_all;
17 static int do_not_match;
18 static int seen;
19 static char delim = '=';
20 static char key_delim = ' ';
21 static char term = '\n';
22
23 static int use_global_config, use_system_config, use_local_config;
24 static const char *given_config_file;
25 static int actions, types;
26 static const char *get_color_slot, *get_colorbool_slot;
27 static int end_null;
28 static int respect_includes = -1;
29
30 #define ACTION_GET (1<<0)
31 #define ACTION_GET_ALL (1<<1)
32 #define ACTION_GET_REGEXP (1<<2)
33 #define ACTION_REPLACE_ALL (1<<3)
34 #define ACTION_ADD (1<<4)
35 #define ACTION_UNSET (1<<5)
36 #define ACTION_UNSET_ALL (1<<6)
37 #define ACTION_RENAME_SECTION (1<<7)
38 #define ACTION_REMOVE_SECTION (1<<8)
39 #define ACTION_LIST (1<<9)
40 #define ACTION_EDIT (1<<10)
41 #define ACTION_SET (1<<11)
42 #define ACTION_SET_ALL (1<<12)
43 #define ACTION_GET_COLOR (1<<13)
44 #define ACTION_GET_COLORBOOL (1<<14)
45
46 #define TYPE_BOOL (1<<0)
47 #define TYPE_INT (1<<1)
48 #define TYPE_BOOL_OR_INT (1<<2)
49 #define TYPE_PATH (1<<3)
50
51 static struct option builtin_config_options[] = {
52 OPT_GROUP("Config file location"),
53 OPT_BOOLEAN(0, "global", &use_global_config, "use global config file"),
54 OPT_BOOLEAN(0, "system", &use_system_config, "use system config file"),
55 OPT_BOOLEAN(0, "local", &use_local_config, "use repository config file"),
56 OPT_STRING('f', "file", &given_config_file, "file", "use given config file"),
57 OPT_GROUP("Action"),
58 OPT_BIT(0, "get", &actions, "get value: name [value-regex]", ACTION_GET),
59 OPT_BIT(0, "get-all", &actions, "get all values: key [value-regex]", ACTION_GET_ALL),
60 OPT_BIT(0, "get-regexp", &actions, "get values for regexp: name-regex [value-regex]", ACTION_GET_REGEXP),
61 OPT_BIT(0, "replace-all", &actions, "replace all matching variables: name value [value_regex]", ACTION_REPLACE_ALL),
62 OPT_BIT(0, "add", &actions, "adds a new variable: name value", ACTION_ADD),
63 OPT_BIT(0, "unset", &actions, "removes a variable: name [value-regex]", ACTION_UNSET),
64 OPT_BIT(0, "unset-all", &actions, "removes all matches: name [value-regex]", ACTION_UNSET_ALL),
65 OPT_BIT(0, "rename-section", &actions, "rename section: old-name new-name", ACTION_RENAME_SECTION),
66 OPT_BIT(0, "remove-section", &actions, "remove a section: name", ACTION_REMOVE_SECTION),
67 OPT_BIT('l', "list", &actions, "list all", ACTION_LIST),
68 OPT_BIT('e', "edit", &actions, "opens an editor", ACTION_EDIT),
69 OPT_STRING(0, "get-color", &get_color_slot, "slot", "find the color configured: [default]"),
70 OPT_STRING(0, "get-colorbool", &get_colorbool_slot, "slot", "find the color setting: [stdout-is-tty]"),
71 OPT_GROUP("Type"),
72 OPT_BIT(0, "bool", &types, "value is \"true\" or \"false\"", TYPE_BOOL),
73 OPT_BIT(0, "int", &types, "value is decimal number", TYPE_INT),
74 OPT_BIT(0, "bool-or-int", &types, "value is --bool or --int", TYPE_BOOL_OR_INT),
75 OPT_BIT(0, "path", &types, "value is a path (file or directory name)", TYPE_PATH),
76 OPT_GROUP("Other"),
77 OPT_BOOLEAN('z', "null", &end_null, "terminate values with NUL byte"),
78 OPT_BOOL(0, "includes", &respect_includes, "respect include directives on lookup"),
79 OPT_END(),
80 };
81
82 static void check_argc(int argc, int min, int max) {
83 if (argc >= min && argc <= max)
84 return;
85 error("wrong number of arguments");
86 usage_with_options(builtin_config_usage, builtin_config_options);
87 }
88
89 static int show_all_config(const char *key_, const char *value_, void *cb)
90 {
91 if (value_)
92 printf("%s%c%s%c", key_, delim, value_, term);
93 else
94 printf("%s%c", key_, term);
95 return 0;
96 }
97
98 static int show_config(const char *key_, const char *value_, void *cb)
99 {
100 char value[256];
101 const char *vptr = value;
102 int must_free_vptr = 0;
103 int dup_error = 0;
104 int must_print_delim = 0;
105
106 if (!use_key_regexp && strcmp(key_, key))
107 return 0;
108 if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
109 return 0;
110 if (regexp != NULL &&
111 (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
112 return 0;
113
114 if (show_keys) {
115 printf("%s", key_);
116 must_print_delim = 1;
117 }
118 if (seen && !do_all)
119 dup_error = 1;
120 if (types == TYPE_INT)
121 sprintf(value, "%d", git_config_int(key_, value_?value_:""));
122 else if (types == TYPE_BOOL)
123 vptr = git_config_bool(key_, value_) ? "true" : "false";
124 else if (types == TYPE_BOOL_OR_INT) {
125 int is_bool, v;
126 v = git_config_bool_or_int(key_, value_, &is_bool);
127 if (is_bool)
128 vptr = v ? "true" : "false";
129 else
130 sprintf(value, "%d", v);
131 } else if (types == TYPE_PATH) {
132 git_config_pathname(&vptr, key_, value_);
133 must_free_vptr = 1;
134 } else if (value_) {
135 vptr = value_;
136 } else {
137 /* Just show the key name */
138 vptr = "";
139 must_print_delim = 0;
140 }
141 seen++;
142 if (dup_error) {
143 error("More than one value for the key %s: %s",
144 key_, vptr);
145 }
146 else {
147 if (must_print_delim)
148 printf("%c", key_delim);
149 printf("%s%c", vptr, term);
150 }
151 if (must_free_vptr)
152 /* If vptr must be freed, it's a pointer to a
153 * dynamically allocated buffer, it's safe to cast to
154 * const.
155 */
156 free((char *)vptr);
157
158 return 0;
159 }
160
161 static int get_value(const char *key_, const char *regex_)
162 {
163 int ret = -1;
164 char *global = NULL, *repo_config = NULL;
165 const char *system_wide = NULL, *local;
166 struct config_include_data inc = CONFIG_INCLUDE_INIT;
167 config_fn_t fn;
168 void *data;
169
170 local = given_config_file;
171 if (!local) {
172 const char *home = getenv("HOME");
173 local = repo_config = git_pathdup("config");
174 if (home)
175 global = xstrdup(mkpath("%s/.gitconfig", home));
176 if (git_config_system())
177 system_wide = git_etc_gitconfig();
178 }
179
180 if (use_key_regexp) {
181 char *tl;
182
183 /*
184 * NEEDSWORK: this naive pattern lowercasing obviously does not
185 * work for more complex patterns like "^[^.]*Foo.*bar".
186 * Perhaps we should deprecate this altogether someday.
187 */
188
189 key = xstrdup(key_);
190 for (tl = key + strlen(key) - 1;
191 tl >= key && *tl != '.';
192 tl--)
193 *tl = tolower(*tl);
194 for (tl = key; *tl && *tl != '.'; tl++)
195 *tl = tolower(*tl);
196
197 key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
198 if (regcomp(key_regexp, key, REG_EXTENDED)) {
199 fprintf(stderr, "Invalid key pattern: %s\n", key_);
200 free(key);
201 goto free_strings;
202 }
203 } else {
204 if (git_config_parse_key(key_, &key, NULL))
205 goto free_strings;
206 }
207
208 if (regex_) {
209 if (regex_[0] == '!') {
210 do_not_match = 1;
211 regex_++;
212 }
213
214 regexp = (regex_t*)xmalloc(sizeof(regex_t));
215 if (regcomp(regexp, regex_, REG_EXTENDED)) {
216 fprintf(stderr, "Invalid pattern: %s\n", regex_);
217 goto free_strings;
218 }
219 }
220
221 fn = show_config;
222 data = NULL;
223 if (respect_includes) {
224 inc.fn = fn;
225 inc.data = data;
226 fn = git_config_include;
227 data = &inc;
228 }
229
230 if (do_all && system_wide)
231 git_config_from_file(fn, system_wide, data);
232 if (do_all && global)
233 git_config_from_file(fn, global, data);
234 if (do_all)
235 git_config_from_file(fn, local, data);
236 git_config_from_parameters(fn, data);
237 if (!do_all && !seen)
238 git_config_from_file(fn, local, data);
239 if (!do_all && !seen && global)
240 git_config_from_file(fn, global, data);
241 if (!do_all && !seen && system_wide)
242 git_config_from_file(fn, system_wide, data);
243
244 free(key);
245 if (regexp) {
246 regfree(regexp);
247 free(regexp);
248 }
249
250 if (do_all)
251 ret = !seen;
252 else
253 ret = (seen == 1) ? 0 : seen > 1 ? 2 : 1;
254
255 free_strings:
256 free(repo_config);
257 free(global);
258 return ret;
259 }
260
261 static char *normalize_value(const char *key, const char *value)
262 {
263 char *normalized;
264
265 if (!value)
266 return NULL;
267
268 if (types == 0 || types == TYPE_PATH)
269 /*
270 * We don't do normalization for TYPE_PATH here: If
271 * the path is like ~/foobar/, we prefer to store
272 * "~/foobar/" in the config file, and to expand the ~
273 * when retrieving the value.
274 */
275 normalized = xstrdup(value);
276 else {
277 normalized = xmalloc(64);
278 if (types == TYPE_INT) {
279 int v = git_config_int(key, value);
280 sprintf(normalized, "%d", v);
281 }
282 else if (types == TYPE_BOOL)
283 sprintf(normalized, "%s",
284 git_config_bool(key, value) ? "true" : "false");
285 else if (types == TYPE_BOOL_OR_INT) {
286 int is_bool, v;
287 v = git_config_bool_or_int(key, value, &is_bool);
288 if (!is_bool)
289 sprintf(normalized, "%d", v);
290 else
291 sprintf(normalized, "%s", v ? "true" : "false");
292 }
293 }
294
295 return normalized;
296 }
297
298 static int get_color_found;
299 static const char *get_color_slot;
300 static const char *get_colorbool_slot;
301 static char parsed_color[COLOR_MAXLEN];
302
303 static int git_get_color_config(const char *var, const char *value, void *cb)
304 {
305 if (!strcmp(var, get_color_slot)) {
306 if (!value)
307 config_error_nonbool(var);
308 color_parse(value, var, parsed_color);
309 get_color_found = 1;
310 }
311 return 0;
312 }
313
314 static void get_color(const char *def_color)
315 {
316 get_color_found = 0;
317 parsed_color[0] = '\0';
318 git_config_with_options(git_get_color_config, NULL,
319 given_config_file, respect_includes);
320
321 if (!get_color_found && def_color)
322 color_parse(def_color, "command line", parsed_color);
323
324 fputs(parsed_color, stdout);
325 }
326
327 static int get_colorbool_found;
328 static int get_diff_color_found;
329 static int get_color_ui_found;
330 static int git_get_colorbool_config(const char *var, const char *value,
331 void *cb)
332 {
333 if (!strcmp(var, get_colorbool_slot))
334 get_colorbool_found = git_config_colorbool(var, value);
335 else if (!strcmp(var, "diff.color"))
336 get_diff_color_found = git_config_colorbool(var, value);
337 else if (!strcmp(var, "color.ui"))
338 get_color_ui_found = git_config_colorbool(var, value);
339 return 0;
340 }
341
342 static int get_colorbool(int print)
343 {
344 get_colorbool_found = -1;
345 get_diff_color_found = -1;
346 git_config_with_options(git_get_colorbool_config, NULL,
347 given_config_file, respect_includes);
348
349 if (get_colorbool_found < 0) {
350 if (!strcmp(get_colorbool_slot, "color.diff"))
351 get_colorbool_found = get_diff_color_found;
352 if (get_colorbool_found < 0)
353 get_colorbool_found = get_color_ui_found;
354 }
355
356 get_colorbool_found = want_color(get_colorbool_found);
357
358 if (print) {
359 printf("%s\n", get_colorbool_found ? "true" : "false");
360 return 0;
361 } else
362 return get_colorbool_found ? 0 : 1;
363 }
364
365 int cmd_config(int argc, const char **argv, const char *prefix)
366 {
367 int nongit = !startup_info->have_repository;
368 char *value;
369
370 given_config_file = getenv(CONFIG_ENVIRONMENT);
371
372 argc = parse_options(argc, argv, prefix, builtin_config_options,
373 builtin_config_usage,
374 PARSE_OPT_STOP_AT_NON_OPTION);
375
376 if (use_global_config + use_system_config + use_local_config + !!given_config_file > 1) {
377 error("only one config file at a time.");
378 usage_with_options(builtin_config_usage, builtin_config_options);
379 }
380
381 if (use_global_config) {
382 char *home = getenv("HOME");
383 if (home) {
384 char *user_config = xstrdup(mkpath("%s/.gitconfig", home));
385 given_config_file = user_config;
386 } else {
387 die("$HOME not set");
388 }
389 }
390 else if (use_system_config)
391 given_config_file = git_etc_gitconfig();
392 else if (use_local_config)
393 given_config_file = git_pathdup("config");
394 else if (given_config_file) {
395 if (!is_absolute_path(given_config_file) && prefix)
396 given_config_file =
397 xstrdup(prefix_filename(prefix,
398 strlen(prefix),
399 given_config_file));
400 }
401
402 if (respect_includes == -1)
403 respect_includes = !given_config_file;
404
405 if (end_null) {
406 term = '\0';
407 delim = '\n';
408 key_delim = '\n';
409 }
410
411 if (HAS_MULTI_BITS(types)) {
412 error("only one type at a time.");
413 usage_with_options(builtin_config_usage, builtin_config_options);
414 }
415
416 if (get_color_slot)
417 actions |= ACTION_GET_COLOR;
418 if (get_colorbool_slot)
419 actions |= ACTION_GET_COLORBOOL;
420
421 if ((get_color_slot || get_colorbool_slot) && types) {
422 error("--get-color and variable type are incoherent");
423 usage_with_options(builtin_config_usage, builtin_config_options);
424 }
425
426 if (HAS_MULTI_BITS(actions)) {
427 error("only one action at a time.");
428 usage_with_options(builtin_config_usage, builtin_config_options);
429 }
430 if (actions == 0)
431 switch (argc) {
432 case 1: actions = ACTION_GET; break;
433 case 2: actions = ACTION_SET; break;
434 case 3: actions = ACTION_SET_ALL; break;
435 default:
436 usage_with_options(builtin_config_usage, builtin_config_options);
437 }
438
439 if (actions == ACTION_LIST) {
440 check_argc(argc, 0, 0);
441 if (git_config_with_options(show_all_config, NULL,
442 given_config_file,
443 respect_includes) < 0) {
444 if (given_config_file)
445 die_errno("unable to read config file '%s'",
446 given_config_file);
447 else
448 die("error processing config file(s)");
449 }
450 }
451 else if (actions == ACTION_EDIT) {
452 check_argc(argc, 0, 0);
453 if (!given_config_file && nongit)
454 die("not in a git directory");
455 git_config(git_default_config, NULL);
456 launch_editor(given_config_file ?
457 given_config_file : git_path("config"),
458 NULL, NULL);
459 }
460 else if (actions == ACTION_SET) {
461 int ret;
462 check_argc(argc, 2, 2);
463 value = normalize_value(argv[0], argv[1]);
464 ret = git_config_set_in_file(given_config_file, argv[0], value);
465 if (ret == CONFIG_NOTHING_SET)
466 error("cannot overwrite multiple values with a single value\n"
467 " Use a regexp, --add or --replace-all to change %s.", argv[0]);
468 return ret;
469 }
470 else if (actions == ACTION_SET_ALL) {
471 check_argc(argc, 2, 3);
472 value = normalize_value(argv[0], argv[1]);
473 return git_config_set_multivar_in_file(given_config_file,
474 argv[0], value, argv[2], 0);
475 }
476 else if (actions == ACTION_ADD) {
477 check_argc(argc, 2, 2);
478 value = normalize_value(argv[0], argv[1]);
479 return git_config_set_multivar_in_file(given_config_file,
480 argv[0], value, "^$", 0);
481 }
482 else if (actions == ACTION_REPLACE_ALL) {
483 check_argc(argc, 2, 3);
484 value = normalize_value(argv[0], argv[1]);
485 return git_config_set_multivar_in_file(given_config_file,
486 argv[0], value, argv[2], 1);
487 }
488 else if (actions == ACTION_GET) {
489 check_argc(argc, 1, 2);
490 return get_value(argv[0], argv[1]);
491 }
492 else if (actions == ACTION_GET_ALL) {
493 do_all = 1;
494 check_argc(argc, 1, 2);
495 return get_value(argv[0], argv[1]);
496 }
497 else if (actions == ACTION_GET_REGEXP) {
498 show_keys = 1;
499 use_key_regexp = 1;
500 do_all = 1;
501 check_argc(argc, 1, 2);
502 return get_value(argv[0], argv[1]);
503 }
504 else if (actions == ACTION_UNSET) {
505 check_argc(argc, 1, 2);
506 if (argc == 2)
507 return git_config_set_multivar_in_file(given_config_file,
508 argv[0], NULL, argv[1], 0);
509 else
510 return git_config_set_in_file(given_config_file,
511 argv[0], NULL);
512 }
513 else if (actions == ACTION_UNSET_ALL) {
514 check_argc(argc, 1, 2);
515 return git_config_set_multivar_in_file(given_config_file,
516 argv[0], NULL, argv[1], 1);
517 }
518 else if (actions == ACTION_RENAME_SECTION) {
519 int ret;
520 check_argc(argc, 2, 2);
521 ret = git_config_rename_section_in_file(given_config_file,
522 argv[0], argv[1]);
523 if (ret < 0)
524 return ret;
525 if (ret == 0)
526 die("No such section!");
527 }
528 else if (actions == ACTION_REMOVE_SECTION) {
529 int ret;
530 check_argc(argc, 1, 1);
531 ret = git_config_rename_section_in_file(given_config_file,
532 argv[0], NULL);
533 if (ret < 0)
534 return ret;
535 if (ret == 0)
536 die("No such section!");
537 }
538 else if (actions == ACTION_GET_COLOR) {
539 get_color(argv[0]);
540 }
541 else if (actions == ACTION_GET_COLORBOOL) {
542 if (argc == 1)
543 color_stdout_is_tty = git_config_bool("command line", argv[0]);
544 return get_colorbool(argc != 0);
545 }
546
547 return 0;
548 }
549
550 int cmd_repo_config(int argc, const char **argv, const char *prefix)
551 {
552 fprintf(stderr, "WARNING: git repo-config is deprecated in favor of git config.\n");
553 return cmd_config(argc, argv, prefix);
554 }