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