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