git

1
#include "builtin.h"
2
#include "abspath.h"
3
#include "config.h"
4
#include "color.h"
5
#include "editor.h"
6
#include "environment.h"
7
#include "repository.h"
8
#include "gettext.h"
9
#include "ident.h"
10
#include "parse-options.h"
11
#include "urlmatch.h"
12
#include "path.h"
13
#include "quote.h"
14
#include "setup.h"
15
#include "strbuf.h"
16
#include "worktree.h"
17

18
static const char *const builtin_config_usage[] = {
19
	N_("git config list [<file-option>] [<display-option>] [--includes]"),
20
	N_("git config get [<file-option>] [<display-option>] [--includes] [--all] [--regexp=<regexp>] [--value=<value>] [--fixed-value] [--default=<default>] <name>"),
21
	N_("git config set [<file-option>] [--type=<type>] [--all] [--value=<value>] [--fixed-value] <name> <value>"),
22
	N_("git config unset [<file-option>] [--all] [--value=<value>] [--fixed-value] <name> <value>"),
23
	N_("git config rename-section [<file-option>] <old-name> <new-name>"),
24
	N_("git config remove-section [<file-option>] <name>"),
25
	N_("git config edit [<file-option>]"),
26
	N_("git config [<file-option>] --get-colorbool <name> [<stdout-is-tty>]"),
27
	NULL
28
};
29

30
static const char *const builtin_config_list_usage[] = {
31
	N_("git config list [<file-option>] [<display-option>] [--includes]"),
32
	NULL
33
};
34

35
static const char *const builtin_config_get_usage[] = {
36
	N_("git config get [<file-option>] [<display-option>] [--includes] [--all] [--regexp=<regexp>] [--value=<value>] [--fixed-value] [--default=<default>] <name>"),
37
	NULL
38
};
39

40
static const char *const builtin_config_set_usage[] = {
41
	N_("git config set [<file-option>] [--type=<type>] [--comment=<message>] [--all] [--value=<value>] [--fixed-value] <name> <value>"),
42
	NULL
43
};
44

45
static const char *const builtin_config_unset_usage[] = {
46
	N_("git config unset [<file-option>] [--all] [--value=<value>] [--fixed-value] <name> <value>"),
47
	NULL
48
};
49

50
static const char *const builtin_config_rename_section_usage[] = {
51
	N_("git config rename-section [<file-option>] <old-name> <new-name>"),
52
	NULL
53
};
54

55
static const char *const builtin_config_remove_section_usage[] = {
56
	N_("git config remove-section [<file-option>] <name>"),
57
	NULL
58
};
59

60
static const char *const builtin_config_edit_usage[] = {
61
	N_("git config edit [<file-option>]"),
62
	NULL
63
};
64

65
#define CONFIG_LOCATION_OPTIONS(opts) \
66
	OPT_GROUP(N_("Config file location")), \
67
	OPT_BOOL(0, "global", &opts.use_global_config, N_("use global config file")), \
68
	OPT_BOOL(0, "system", &opts.use_system_config, N_("use system config file")), \
69
	OPT_BOOL(0, "local", &opts.use_local_config, N_("use repository config file")), \
70
	OPT_BOOL(0, "worktree", &opts.use_worktree_config, N_("use per-worktree config file")), \
71
	OPT_STRING('f', "file", &opts.source.file, N_("file"), N_("use given config file")), \
72
	OPT_STRING(0, "blob", &opts.source.blob, N_("blob-id"), N_("read config from given blob object"))
73

74
struct config_location_options {
75
	struct git_config_source source;
76
	struct config_options options;
77
	char *file_to_free;
78
	int use_global_config;
79
	int use_system_config;
80
	int use_local_config;
81
	int use_worktree_config;
82
	int respect_includes_opt;
83
};
84
#define CONFIG_LOCATION_OPTIONS_INIT { \
85
	.respect_includes_opt = -1, \
86
}
87

88
#define CONFIG_TYPE_OPTIONS(type) \
89
	OPT_GROUP(N_("Type")), \
90
	OPT_CALLBACK('t', "type", &type, N_("type"), N_("value is given this type"), option_parse_type), \
91
	OPT_CALLBACK_VALUE(0, "bool", &type, N_("value is \"true\" or \"false\""), TYPE_BOOL), \
92
	OPT_CALLBACK_VALUE(0, "int", &type, N_("value is decimal number"), TYPE_INT), \
93
	OPT_CALLBACK_VALUE(0, "bool-or-int", &type, N_("value is --bool or --int"), TYPE_BOOL_OR_INT), \
94
	OPT_CALLBACK_VALUE(0, "bool-or-str", &type, N_("value is --bool or string"), TYPE_BOOL_OR_STR), \
95
	OPT_CALLBACK_VALUE(0, "path", &type, N_("value is a path (file or directory name)"), TYPE_PATH), \
96
	OPT_CALLBACK_VALUE(0, "expiry-date", &type, N_("value is an expiry date"), TYPE_EXPIRY_DATE)
97

98
#define CONFIG_DISPLAY_OPTIONS(opts) \
99
	OPT_GROUP(N_("Display options")), \
100
	OPT_BOOL('z', "null", &opts.end_nul, N_("terminate values with NUL byte")), \
101
	OPT_BOOL(0, "name-only", &opts.omit_values, N_("show variable names only")), \
102
	OPT_BOOL(0, "show-origin", &opts.show_origin, N_("show origin of config (file, standard input, blob, command line)")), \
103
	OPT_BOOL(0, "show-scope", &opts.show_scope, N_("show scope of config (worktree, local, global, system, command)")), \
104
	OPT_BOOL(0, "show-names", &opts.show_keys, N_("show config keys in addition to their values")), \
105
	CONFIG_TYPE_OPTIONS(opts.type)
106

107
struct config_display_options {
108
	int end_nul;
109
	int omit_values;
110
	int show_origin;
111
	int show_scope;
112
	int show_keys;
113
	int type;
114
	char *default_value;
115
	/* Populated via `display_options_init()`. */
116
	int term;
117
	int delim;
118
	int key_delim;
119
};
120
#define CONFIG_DISPLAY_OPTIONS_INIT { \
121
	.term = '\n', \
122
	.delim = '=', \
123
	.key_delim = ' ', \
124
}
125

126
#define TYPE_BOOL		1
127
#define TYPE_INT		2
128
#define TYPE_BOOL_OR_INT	3
129
#define TYPE_PATH		4
130
#define TYPE_EXPIRY_DATE	5
131
#define TYPE_COLOR		6
132
#define TYPE_BOOL_OR_STR	7
133

134
#define OPT_CALLBACK_VALUE(s, l, v, h, i) \
135
	{ OPTION_CALLBACK, (s), (l), (v), NULL, (h), PARSE_OPT_NOARG | \
136
	PARSE_OPT_NONEG, option_parse_type, (i) }
137

138
static int option_parse_type(const struct option *opt, const char *arg,
139
			     int unset)
140
{
141
	int new_type, *to_type;
142

143
	if (unset) {
144
		*((int *) opt->value) = 0;
145
		return 0;
146
	}
147

148
	/*
149
	 * To support '--<type>' style flags, begin with new_type equal to
150
	 * opt->defval.
151
	 */
152
	new_type = opt->defval;
153
	if (!new_type) {
154
		if (!strcmp(arg, "bool"))
155
			new_type = TYPE_BOOL;
156
		else if (!strcmp(arg, "int"))
157
			new_type = TYPE_INT;
158
		else if (!strcmp(arg, "bool-or-int"))
159
			new_type = TYPE_BOOL_OR_INT;
160
		else if (!strcmp(arg, "bool-or-str"))
161
			new_type = TYPE_BOOL_OR_STR;
162
		else if (!strcmp(arg, "path"))
163
			new_type = TYPE_PATH;
164
		else if (!strcmp(arg, "expiry-date"))
165
			new_type = TYPE_EXPIRY_DATE;
166
		else if (!strcmp(arg, "color"))
167
			new_type = TYPE_COLOR;
168
		else
169
			die(_("unrecognized --type argument, %s"), arg);
170
	}
171

172
	to_type = opt->value;
173
	if (*to_type && *to_type != new_type) {
174
		/*
175
		 * Complain when there is a new type not equal to the old type.
176
		 * This allows for combinations like '--int --type=int' and
177
		 * '--type=int --type=int', but disallows ones like '--type=bool
178
		 * --int' and '--type=bool
179
		 * --type=int'.
180
		 */
181
		error(_("only one type at a time"));
182
		exit(129);
183
	}
184
	*to_type = new_type;
185

186
	return 0;
187
}
188

189
static void check_argc(int argc, int min, int max)
190
{
191
	if (argc >= min && argc <= max)
192
		return;
193
	if (min == max)
194
		error(_("wrong number of arguments, should be %d"), min);
195
	else
196
		error(_("wrong number of arguments, should be from %d to %d"),
197
		      min, max);
198
	exit(129);
199
}
200

201
static void show_config_origin(const struct config_display_options *opts,
202
			       const struct key_value_info *kvi,
203
			       struct strbuf *buf)
204
{
205
	const char term = opts->end_nul ? '\0' : '\t';
206

207
	strbuf_addstr(buf, config_origin_type_name(kvi->origin_type));
208
	strbuf_addch(buf, ':');
209
	if (opts->end_nul)
210
		strbuf_addstr(buf, kvi->filename ? kvi->filename : "");
211
	else
212
		quote_c_style(kvi->filename ? kvi->filename : "", buf, NULL, 0);
213
	strbuf_addch(buf, term);
214
}
215

216
static void show_config_scope(const struct config_display_options *opts,
217
			      const struct key_value_info *kvi,
218
			      struct strbuf *buf)
219
{
220
	const char term = opts->end_nul ? '\0' : '\t';
221
	const char *scope = config_scope_name(kvi->scope);
222

223
	strbuf_addstr(buf, N_(scope));
224
	strbuf_addch(buf, term);
225
}
226

227
static int show_all_config(const char *key_, const char *value_,
228
			   const struct config_context *ctx,
229
			   void *cb)
230
{
231
	const struct config_display_options *opts = cb;
232
	const struct key_value_info *kvi = ctx->kvi;
233

234
	if (opts->show_origin || opts->show_scope) {
235
		struct strbuf buf = STRBUF_INIT;
236
		if (opts->show_scope)
237
			show_config_scope(opts, kvi, &buf);
238
		if (opts->show_origin)
239
			show_config_origin(opts, kvi, &buf);
240
		/* Use fwrite as "buf" can contain \0's if "end_null" is set. */
241
		fwrite(buf.buf, 1, buf.len, stdout);
242
		strbuf_release(&buf);
243
	}
244
	if (!opts->omit_values && value_)
245
		printf("%s%c%s%c", key_, opts->delim, value_, opts->term);
246
	else
247
		printf("%s%c", key_, opts->term);
248
	return 0;
249
}
250

251
struct strbuf_list {
252
	struct strbuf *items;
253
	int nr;
254
	int alloc;
255
};
256

257
static int format_config(const struct config_display_options *opts,
258
			 struct strbuf *buf, const char *key_,
259
			 const char *value_, const struct key_value_info *kvi)
260
{
261
	if (opts->show_scope)
262
		show_config_scope(opts, kvi, buf);
263
	if (opts->show_origin)
264
		show_config_origin(opts, kvi, buf);
265
	if (opts->show_keys)
266
		strbuf_addstr(buf, key_);
267
	if (!opts->omit_values) {
268
		if (opts->show_keys)
269
			strbuf_addch(buf, opts->key_delim);
270

271
		if (opts->type == TYPE_INT)
272
			strbuf_addf(buf, "%"PRId64,
273
				    git_config_int64(key_, value_ ? value_ : "", kvi));
274
		else if (opts->type == TYPE_BOOL)
275
			strbuf_addstr(buf, git_config_bool(key_, value_) ?
276
				      "true" : "false");
277
		else if (opts->type == TYPE_BOOL_OR_INT) {
278
			int is_bool, v;
279
			v = git_config_bool_or_int(key_, value_, kvi,
280
						   &is_bool);
281
			if (is_bool)
282
				strbuf_addstr(buf, v ? "true" : "false");
283
			else
284
				strbuf_addf(buf, "%d", v);
285
		} else if (opts->type == TYPE_BOOL_OR_STR) {
286
			int v = git_parse_maybe_bool(value_);
287
			if (v < 0)
288
				strbuf_addstr(buf, value_);
289
			else
290
				strbuf_addstr(buf, v ? "true" : "false");
291
		} else if (opts->type == TYPE_PATH) {
292
			char *v;
293
			if (git_config_pathname(&v, key_, value_) < 0)
294
				return -1;
295
			strbuf_addstr(buf, v);
296
			free((char *)v);
297
		} else if (opts->type == TYPE_EXPIRY_DATE) {
298
			timestamp_t t;
299
			if (git_config_expiry_date(&t, key_, value_) < 0)
300
				return -1;
301
			strbuf_addf(buf, "%"PRItime, t);
302
		} else if (opts->type == TYPE_COLOR) {
303
			char v[COLOR_MAXLEN];
304
			if (git_config_color(v, key_, value_) < 0)
305
				return -1;
306
			strbuf_addstr(buf, v);
307
		} else if (value_) {
308
			strbuf_addstr(buf, value_);
309
		} else {
310
			/* Just show the key name; back out delimiter */
311
			if (opts->show_keys)
312
				strbuf_setlen(buf, buf->len - 1);
313
		}
314
	}
315
	strbuf_addch(buf, opts->term);
316
	return 0;
317
}
318

319
#define GET_VALUE_ALL        (1 << 0)
320
#define GET_VALUE_KEY_REGEXP (1 << 1)
321

322
struct collect_config_data {
323
	const struct config_display_options *display_opts;
324
	struct strbuf_list *values;
325
	const char *value_pattern;
326
	const char *key;
327
	regex_t *regexp;
328
	regex_t *key_regexp;
329
	int do_not_match;
330
	unsigned get_value_flags;
331
	unsigned flags;
332
};
333

334
static int collect_config(const char *key_, const char *value_,
335
			  const struct config_context *ctx, void *cb)
336
{
337
	struct collect_config_data *data = cb;
338
	struct strbuf_list *values = data->values;
339
	const struct key_value_info *kvi = ctx->kvi;
340

341
	if (!(data->get_value_flags & GET_VALUE_KEY_REGEXP) &&
342
	    strcmp(key_, data->key))
343
		return 0;
344
	if ((data->get_value_flags & GET_VALUE_KEY_REGEXP) &&
345
	    regexec(data->key_regexp, key_, 0, NULL, 0))
346
		return 0;
347
	if ((data->flags & CONFIG_FLAGS_FIXED_VALUE) &&
348
	    strcmp(data->value_pattern, (value_?value_:"")))
349
		return 0;
350
	if (data->regexp &&
351
	    (data->do_not_match ^ !!regexec(data->regexp, (value_?value_:""), 0, NULL, 0)))
352
		return 0;
353

354
	ALLOC_GROW(values->items, values->nr + 1, values->alloc);
355
	strbuf_init(&values->items[values->nr], 0);
356

357
	return format_config(data->display_opts, &values->items[values->nr++],
358
			     key_, value_, kvi);
359
}
360

361
static int get_value(const struct config_location_options *opts,
362
		     const struct config_display_options *display_opts,
363
		     const char *key_, const char *regex_,
364
		     unsigned get_value_flags, unsigned flags)
365
{
366
	int ret = CONFIG_GENERIC_ERROR;
367
	struct strbuf_list values = {NULL};
368
	struct collect_config_data data = {
369
		.display_opts = display_opts,
370
		.values = &values,
371
		.get_value_flags = get_value_flags,
372
		.flags = flags,
373
	};
374
	char *key = NULL;
375
	int i;
376

377
	if (get_value_flags & GET_VALUE_KEY_REGEXP) {
378
		char *tl;
379

380
		/*
381
		 * NEEDSWORK: this naive pattern lowercasing obviously does not
382
		 * work for more complex patterns like "^[^.]*Foo.*bar".
383
		 * Perhaps we should deprecate this altogether someday.
384
		 */
385

386
		key = xstrdup(key_);
387
		for (tl = key + strlen(key) - 1;
388
		     tl >= key && *tl != '.';
389
		     tl--)
390
			*tl = tolower(*tl);
391
		for (tl = key; *tl && *tl != '.'; tl++)
392
			*tl = tolower(*tl);
393

394
		data.key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
395
		if (regcomp(data.key_regexp, key, REG_EXTENDED)) {
396
			error(_("invalid key pattern: %s"), key_);
397
			FREE_AND_NULL(data.key_regexp);
398
			ret = CONFIG_INVALID_PATTERN;
399
			goto free_strings;
400
		}
401
	} else {
402
		if (git_config_parse_key(key_, &key, NULL)) {
403
			ret = CONFIG_INVALID_KEY;
404
			goto free_strings;
405
		}
406

407
		data.key = key;
408
	}
409

410
	if (regex_ && (flags & CONFIG_FLAGS_FIXED_VALUE))
411
		data.value_pattern = regex_;
412
	else if (regex_) {
413
		if (regex_[0] == '!') {
414
			data.do_not_match = 1;
415
			regex_++;
416
		}
417

418
		data.regexp = (regex_t*)xmalloc(sizeof(regex_t));
419
		if (regcomp(data.regexp, regex_, REG_EXTENDED)) {
420
			error(_("invalid pattern: %s"), regex_);
421
			FREE_AND_NULL(data.regexp);
422
			ret = CONFIG_INVALID_PATTERN;
423
			goto free_strings;
424
		}
425
	}
426

427
	config_with_options(collect_config, &data,
428
			    &opts->source, the_repository,
429
			    &opts->options);
430

431
	if (!values.nr && display_opts->default_value) {
432
		struct key_value_info kvi = KVI_INIT;
433
		struct strbuf *item;
434

435
		kvi_from_param(&kvi);
436
		ALLOC_GROW(values.items, values.nr + 1, values.alloc);
437
		item = &values.items[values.nr++];
438
		strbuf_init(item, 0);
439
		if (format_config(display_opts, item, key_,
440
				  display_opts->default_value, &kvi) < 0)
441
			die(_("failed to format default config value: %s"),
442
			    display_opts->default_value);
443
	}
444

445
	ret = !values.nr;
446

447
	for (i = 0; i < values.nr; i++) {
448
		struct strbuf *buf = values.items + i;
449
		if ((get_value_flags & GET_VALUE_ALL) || i == values.nr - 1)
450
			fwrite(buf->buf, 1, buf->len, stdout);
451
		strbuf_release(buf);
452
	}
453
	free(values.items);
454

455
free_strings:
456
	free(key);
457
	if (data.key_regexp) {
458
		regfree(data.key_regexp);
459
		free(data.key_regexp);
460
	}
461
	if (data.regexp) {
462
		regfree(data.regexp);
463
		free(data.regexp);
464
	}
465

466
	return ret;
467
}
468

469
static char *normalize_value(const char *key, const char *value,
470
			     int type, struct key_value_info *kvi)
471
{
472
	if (!value)
473
		return NULL;
474

475
	if (type == 0 || type == TYPE_PATH || type == TYPE_EXPIRY_DATE)
476
		/*
477
		 * We don't do normalization for TYPE_PATH here: If
478
		 * the path is like ~/foobar/, we prefer to store
479
		 * "~/foobar/" in the config file, and to expand the ~
480
		 * when retrieving the value.
481
		 * Also don't do normalization for expiry dates.
482
		 */
483
		return xstrdup(value);
484
	if (type == TYPE_INT)
485
		return xstrfmt("%"PRId64, git_config_int64(key, value, kvi));
486
	if (type == TYPE_BOOL)
487
		return xstrdup(git_config_bool(key, value) ?  "true" : "false");
488
	if (type == TYPE_BOOL_OR_INT) {
489
		int is_bool, v;
490
		v = git_config_bool_or_int(key, value, kvi, &is_bool);
491
		if (!is_bool)
492
			return xstrfmt("%d", v);
493
		else
494
			return xstrdup(v ? "true" : "false");
495
	}
496
	if (type == TYPE_BOOL_OR_STR) {
497
		int v = git_parse_maybe_bool(value);
498
		if (v < 0)
499
			return xstrdup(value);
500
		else
501
			return xstrdup(v ? "true" : "false");
502
	}
503
	if (type == TYPE_COLOR) {
504
		char v[COLOR_MAXLEN];
505
		if (git_config_color(v, key, value))
506
			die(_("cannot parse color '%s'"), value);
507

508
		/*
509
		 * The contents of `v` now contain an ANSI escape
510
		 * sequence, not suitable for including within a
511
		 * configuration file. Treat the above as a
512
		 * "sanity-check", and return the given value, which we
513
		 * know is representable as valid color code.
514
		 */
515
		return xstrdup(value);
516
	}
517

518
	BUG("cannot normalize type %d", type);
519
}
520

521
struct get_color_config_data {
522
	int get_color_found;
523
	const char *get_color_slot;
524
	char parsed_color[COLOR_MAXLEN];
525
};
526

527
static int git_get_color_config(const char *var, const char *value,
528
				const struct config_context *ctx UNUSED,
529
				void *cb)
530
{
531
	struct get_color_config_data *data = cb;
532

533
	if (!strcmp(var, data->get_color_slot)) {
534
		if (!value)
535
			config_error_nonbool(var);
536
		if (color_parse(value, data->parsed_color) < 0)
537
			return -1;
538
		data->get_color_found = 1;
539
	}
540
	return 0;
541
}
542

543
static void get_color(const struct config_location_options *opts,
544
		      const char *var, const char *def_color)
545
{
546
	struct get_color_config_data data = {
547
		.get_color_slot = var,
548
		.parsed_color[0] = '\0',
549
	};
550

551
	config_with_options(git_get_color_config, &data,
552
			    &opts->source, the_repository,
553
			    &opts->options);
554

555
	if (!data.get_color_found && def_color) {
556
		if (color_parse(def_color, data.parsed_color) < 0)
557
			die(_("unable to parse default color value"));
558
	}
559

560
	fputs(data.parsed_color, stdout);
561
}
562

563
struct get_colorbool_config_data {
564
	int get_colorbool_found;
565
	int get_diff_color_found;
566
	int get_color_ui_found;
567
	const char *get_colorbool_slot;
568
};
569

570
static int git_get_colorbool_config(const char *var, const char *value,
571
				    const struct config_context *ctx UNUSED,
572
				    void *cb)
573
{
574
	struct get_colorbool_config_data *data = cb;
575

576
	if (!strcmp(var, data->get_colorbool_slot))
577
		data->get_colorbool_found = git_config_colorbool(var, value);
578
	else if (!strcmp(var, "diff.color"))
579
		data->get_diff_color_found = git_config_colorbool(var, value);
580
	else if (!strcmp(var, "color.ui"))
581
		data->get_color_ui_found = git_config_colorbool(var, value);
582
	return 0;
583
}
584

585
static int get_colorbool(const struct config_location_options *opts,
586
			 const char *var, int print)
587
{
588
	struct get_colorbool_config_data data = {
589
		.get_colorbool_slot = var,
590
		.get_colorbool_found = -1,
591
		.get_diff_color_found = -1,
592
		.get_color_ui_found = -1,
593
	};
594

595
	config_with_options(git_get_colorbool_config, &data,
596
			    &opts->source, the_repository,
597
			    &opts->options);
598

599
	if (data.get_colorbool_found < 0) {
600
		if (!strcmp(data.get_colorbool_slot, "color.diff"))
601
			data.get_colorbool_found = data.get_diff_color_found;
602
		if (data.get_colorbool_found < 0)
603
			data.get_colorbool_found = data.get_color_ui_found;
604
	}
605

606
	if (data.get_colorbool_found < 0)
607
		/* default value if none found in config */
608
		data.get_colorbool_found = GIT_COLOR_AUTO;
609

610
	data.get_colorbool_found = want_color(data.get_colorbool_found);
611

612
	if (print) {
613
		printf("%s\n", data.get_colorbool_found ? "true" : "false");
614
		return 0;
615
	} else
616
		return data.get_colorbool_found ? 0 : 1;
617
}
618

619
static void check_write(const struct git_config_source *source)
620
{
621
	if (!source->file && !startup_info->have_repository)
622
		die(_("not in a git directory"));
623

624
	if (source->use_stdin)
625
		die(_("writing to stdin is not supported"));
626

627
	if (source->blob)
628
		die(_("writing config blobs is not supported"));
629
}
630

631
struct urlmatch_current_candidate_value {
632
	char value_is_null;
633
	struct strbuf value;
634
	struct key_value_info kvi;
635
};
636

637
static int urlmatch_collect_fn(const char *var, const char *value,
638
			       const struct config_context *ctx,
639
			       void *cb)
640
{
641
	struct string_list *values = cb;
642
	struct string_list_item *item = string_list_insert(values, var);
643
	struct urlmatch_current_candidate_value *matched = item->util;
644
	const struct key_value_info *kvi = ctx->kvi;
645

646
	if (!matched) {
647
		matched = xmalloc(sizeof(*matched));
648
		strbuf_init(&matched->value, 0);
649
		item->util = matched;
650
	} else {
651
		strbuf_reset(&matched->value);
652
	}
653
	matched->kvi = *kvi;
654

655
	if (value) {
656
		strbuf_addstr(&matched->value, value);
657
		matched->value_is_null = 0;
658
	} else {
659
		matched->value_is_null = 1;
660
	}
661
	return 0;
662
}
663

664
static int get_urlmatch(const struct config_location_options *opts,
665
			const struct config_display_options *_display_opts,
666
			const char *var, const char *url)
667
{
668
	int ret;
669
	char *section_tail;
670
	struct config_display_options display_opts = *_display_opts;
671
	struct string_list_item *item;
672
	struct urlmatch_config config = URLMATCH_CONFIG_INIT;
673
	struct string_list values = STRING_LIST_INIT_DUP;
674

675
	config.collect_fn = urlmatch_collect_fn;
676
	config.cascade_fn = NULL;
677
	config.cb = &values;
678

679
	if (!url_normalize(url, &config.url))
680
		die("%s", config.url.err);
681

682
	config.section = xstrdup_tolower(var);
683
	section_tail = strchr(config.section, '.');
684
	if (section_tail) {
685
		*section_tail = '\0';
686
		config.key = section_tail + 1;
687
		display_opts.show_keys = 0;
688
	} else {
689
		config.key = NULL;
690
		display_opts.show_keys = 1;
691
	}
692

693
	config_with_options(urlmatch_config_entry, &config,
694
			    &opts->source, the_repository,
695
			    &opts->options);
696

697
	ret = !values.nr;
698

699
	for_each_string_list_item(item, &values) {
700
		struct urlmatch_current_candidate_value *matched = item->util;
701
		struct strbuf buf = STRBUF_INIT;
702

703
		format_config(&display_opts, &buf, item->string,
704
			      matched->value_is_null ? NULL : matched->value.buf,
705
			      &matched->kvi);
706
		fwrite(buf.buf, 1, buf.len, stdout);
707
		strbuf_release(&buf);
708

709
		strbuf_release(&matched->value);
710
	}
711
	urlmatch_config_release(&config);
712
	string_list_clear(&values, 1);
713
	free(config.url.url);
714

715
	free((void *)config.section);
716
	return ret;
717
}
718

719
static char *default_user_config(void)
720
{
721
	struct strbuf buf = STRBUF_INIT;
722
	strbuf_addf(&buf,
723
		    _("# This is Git's per-user configuration file.\n"
724
		      "[user]\n"
725
		      "# Please adapt and uncomment the following lines:\n"
726
		      "#	name = %s\n"
727
		      "#	email = %s\n"),
728
		    ident_default_name(),
729
		    ident_default_email());
730
	return strbuf_detach(&buf, NULL);
731
}
732

733
static void location_options_init(struct config_location_options *opts,
734
				  const char *prefix)
735
{
736
	if (!opts->source.file)
737
		opts->source.file = opts->file_to_free =
738
			xstrdup_or_null(getenv(CONFIG_ENVIRONMENT));
739

740
	if (opts->use_global_config + opts->use_system_config +
741
	    opts->use_local_config + opts->use_worktree_config +
742
	    !!opts->source.file + !!opts->source.blob > 1) {
743
		error(_("only one config file at a time"));
744
		exit(129);
745
	}
746

747
	if (!startup_info->have_repository) {
748
		if (opts->use_local_config)
749
			die(_("--local can only be used inside a git repository"));
750
		if (opts->source.blob)
751
			die(_("--blob can only be used inside a git repository"));
752
		if (opts->use_worktree_config)
753
			die(_("--worktree can only be used inside a git repository"));
754
	}
755

756
	if (opts->source.file &&
757
			!strcmp(opts->source.file, "-")) {
758
		opts->source.file = NULL;
759
		opts->source.use_stdin = 1;
760
		opts->source.scope = CONFIG_SCOPE_COMMAND;
761
	}
762

763
	if (opts->use_global_config) {
764
		opts->source.file = opts->file_to_free = git_global_config();
765
		if (!opts->source.file)
766
			/*
767
			 * It is unknown if HOME/.gitconfig exists, so
768
			 * we do not know if we should write to XDG
769
			 * location; error out even if XDG_CONFIG_HOME
770
			 * is set and points at a sane location.
771
			 */
772
			die(_("$HOME not set"));
773
		opts->source.scope = CONFIG_SCOPE_GLOBAL;
774
	} else if (opts->use_system_config) {
775
		opts->source.file = opts->file_to_free = git_system_config();
776
		opts->source.scope = CONFIG_SCOPE_SYSTEM;
777
	} else if (opts->use_local_config) {
778
		opts->source.file = opts->file_to_free = git_pathdup("config");
779
		opts->source.scope = CONFIG_SCOPE_LOCAL;
780
	} else if (opts->use_worktree_config) {
781
		struct worktree **worktrees = get_worktrees();
782
		if (the_repository->repository_format_worktree_config)
783
			opts->source.file = opts->file_to_free =
784
				git_pathdup("config.worktree");
785
		else if (worktrees[0] && worktrees[1])
786
			die(_("--worktree cannot be used with multiple "
787
			      "working trees unless the config\n"
788
			      "extension worktreeConfig is enabled. "
789
			      "Please read \"CONFIGURATION FILE\"\n"
790
			      "section in \"git help worktree\" for details"));
791
		else
792
			opts->source.file = opts->file_to_free =
793
				git_pathdup("config");
794
		opts->source.scope = CONFIG_SCOPE_LOCAL;
795
		free_worktrees(worktrees);
796
	} else if (opts->source.file) {
797
		if (!is_absolute_path(opts->source.file) && prefix)
798
			opts->source.file = opts->file_to_free =
799
				prefix_filename(prefix, opts->source.file);
800
		opts->source.scope = CONFIG_SCOPE_COMMAND;
801
	} else if (opts->source.blob) {
802
		opts->source.scope = CONFIG_SCOPE_COMMAND;
803
	}
804

805
	if (opts->respect_includes_opt == -1)
806
		opts->options.respect_includes = !opts->source.file;
807
	else
808
		opts->options.respect_includes = opts->respect_includes_opt;
809
	if (startup_info->have_repository) {
810
		opts->options.commondir = get_git_common_dir();
811
		opts->options.git_dir = get_git_dir();
812
	}
813
}
814

815
static void location_options_release(struct config_location_options *opts)
816
{
817
	free(opts->file_to_free);
818
}
819

820
static void display_options_init(struct config_display_options *opts)
821
{
822
	if (opts->end_nul) {
823
		opts->term = '\0';
824
		opts->delim = '\n';
825
		opts->key_delim = '\n';
826
	}
827
}
828

829
static int cmd_config_list(int argc, const char **argv, const char *prefix)
830
{
831
	struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
832
	struct config_display_options display_opts = CONFIG_DISPLAY_OPTIONS_INIT;
833
	struct option opts[] = {
834
		CONFIG_LOCATION_OPTIONS(location_opts),
835
		CONFIG_DISPLAY_OPTIONS(display_opts),
836
		OPT_GROUP(N_("Other")),
837
		OPT_BOOL(0, "includes", &location_opts.respect_includes_opt,
838
			 N_("respect include directives on lookup")),
839
		OPT_END(),
840
	};
841

842
	argc = parse_options(argc, argv, prefix, opts, builtin_config_list_usage, 0);
843
	check_argc(argc, 0, 0);
844

845
	location_options_init(&location_opts, prefix);
846
	display_options_init(&display_opts);
847

848
	setup_auto_pager("config", 1);
849

850
	if (config_with_options(show_all_config, &display_opts,
851
				&location_opts.source, the_repository,
852
				&location_opts.options) < 0) {
853
		if (location_opts.source.file)
854
			die_errno(_("unable to read config file '%s'"),
855
				  location_opts.source.file);
856
		else
857
			die(_("error processing config file(s)"));
858
	}
859

860
	location_options_release(&location_opts);
861
	return 0;
862
}
863

864
static int cmd_config_get(int argc, const char **argv, const char *prefix)
865
{
866
	struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
867
	struct config_display_options display_opts = CONFIG_DISPLAY_OPTIONS_INIT;
868
	const char *value_pattern = NULL, *url = NULL;
869
	int flags = 0;
870
	unsigned get_value_flags = 0;
871
	struct option opts[] = {
872
		CONFIG_LOCATION_OPTIONS(location_opts),
873
		OPT_GROUP(N_("Filter options")),
874
		OPT_BIT(0, "all", &get_value_flags, N_("return all values for multi-valued config options"), GET_VALUE_ALL),
875
		OPT_BIT(0, "regexp", &get_value_flags, N_("interpret the name as a regular expression"), GET_VALUE_KEY_REGEXP),
876
		OPT_STRING(0, "value", &value_pattern, N_("pattern"), N_("show config with values matching the pattern")),
877
		OPT_BIT(0, "fixed-value", &flags, N_("use string equality when comparing values to value pattern"), CONFIG_FLAGS_FIXED_VALUE),
878
		OPT_STRING(0, "url", &url, N_("URL"), N_("show config matching the given URL")),
879
		CONFIG_DISPLAY_OPTIONS(display_opts),
880
		OPT_GROUP(N_("Other")),
881
		OPT_BOOL(0, "includes", &location_opts.respect_includes_opt,
882
			 N_("respect include directives on lookup")),
883
		OPT_STRING(0, "default", &display_opts.default_value,
884
			   N_("value"), N_("use default value when missing entry")),
885
		OPT_END(),
886
	};
887
	int ret;
888

889
	argc = parse_options(argc, argv, prefix, opts, builtin_config_get_usage,
890
			     PARSE_OPT_STOP_AT_NON_OPTION);
891
	check_argc(argc, 1, 1);
892

893
	if ((flags & CONFIG_FLAGS_FIXED_VALUE) && !value_pattern)
894
		die(_("--fixed-value only applies with 'value-pattern'"));
895
	if (display_opts.default_value &&
896
	    ((get_value_flags & GET_VALUE_ALL) || url))
897
		die(_("--default= cannot be used with --all or --url="));
898
	if (url && ((get_value_flags & GET_VALUE_ALL) ||
899
		    (get_value_flags & GET_VALUE_KEY_REGEXP) ||
900
		    value_pattern))
901
		die(_("--url= cannot be used with --all, --regexp or --value"));
902

903
	location_options_init(&location_opts, prefix);
904
	display_options_init(&display_opts);
905

906
	setup_auto_pager("config", 1);
907

908
	if (url)
909
		ret = get_urlmatch(&location_opts, &display_opts, argv[0], url);
910
	else
911
		ret = get_value(&location_opts, &display_opts, argv[0], value_pattern,
912
				get_value_flags, flags);
913

914
	location_options_release(&location_opts);
915
	return ret;
916
}
917

918
static int cmd_config_set(int argc, const char **argv, const char *prefix)
919
{
920
	struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
921
	const char *value_pattern = NULL, *comment_arg = NULL;
922
	char *comment = NULL;
923
	int flags = 0, append = 0, type = 0;
924
	struct option opts[] = {
925
		CONFIG_LOCATION_OPTIONS(location_opts),
926
		CONFIG_TYPE_OPTIONS(type),
927
		OPT_GROUP(N_("Filter")),
928
		OPT_BIT(0, "all", &flags, N_("replace multi-valued config option with new value"), CONFIG_FLAGS_MULTI_REPLACE),
929
		OPT_STRING(0, "value", &value_pattern, N_("pattern"), N_("show config with values matching the pattern")),
930
		OPT_BIT(0, "fixed-value", &flags, N_("use string equality when comparing values to value pattern"), CONFIG_FLAGS_FIXED_VALUE),
931
		OPT_GROUP(N_("Other")),
932
		OPT_STRING(0, "comment", &comment_arg, N_("value"), N_("human-readable comment string (# will be prepended as needed)")),
933
		OPT_BOOL(0, "append", &append, N_("add a new line without altering any existing values")),
934
		OPT_END(),
935
	};
936
	struct key_value_info default_kvi = KVI_INIT;
937
	char *value;
938
	int ret;
939

940
	argc = parse_options(argc, argv, prefix, opts, builtin_config_set_usage,
941
			     PARSE_OPT_STOP_AT_NON_OPTION);
942
	check_argc(argc, 2, 2);
943

944
	if ((flags & CONFIG_FLAGS_FIXED_VALUE) && !value_pattern)
945
		die(_("--fixed-value only applies with --value=<pattern>"));
946
	if (append && value_pattern)
947
		die(_("--append cannot be used with --value=<pattern>"));
948
	if (append)
949
		value_pattern = CONFIG_REGEX_NONE;
950

951
	comment = git_config_prepare_comment_string(comment_arg);
952

953
	location_options_init(&location_opts, prefix);
954
	check_write(&location_opts.source);
955

956
	value = normalize_value(argv[0], argv[1], type, &default_kvi);
957

958
	if ((flags & CONFIG_FLAGS_MULTI_REPLACE) || value_pattern) {
959
		ret = git_config_set_multivar_in_file_gently(location_opts.source.file,
960
							     argv[0], value, value_pattern,
961
							     comment, flags);
962
	} else {
963
		ret = git_config_set_in_file_gently(location_opts.source.file,
964
						    argv[0], comment, value);
965
		if (ret == CONFIG_NOTHING_SET)
966
			error(_("cannot overwrite multiple values with a single value\n"
967
			"       Use a regexp, --add or --replace-all to change %s."), argv[0]);
968
	}
969

970
	location_options_release(&location_opts);
971
	free(comment);
972
	free(value);
973
	return ret;
974
}
975

976
static int cmd_config_unset(int argc, const char **argv, const char *prefix)
977
{
978
	struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
979
	const char *value_pattern = NULL;
980
	int flags = 0;
981
	struct option opts[] = {
982
		CONFIG_LOCATION_OPTIONS(location_opts),
983
		OPT_GROUP(N_("Filter")),
984
		OPT_BIT(0, "all", &flags, N_("replace multi-valued config option with new value"), CONFIG_FLAGS_MULTI_REPLACE),
985
		OPT_STRING(0, "value", &value_pattern, N_("pattern"), N_("show config with values matching the pattern")),
986
		OPT_BIT(0, "fixed-value", &flags, N_("use string equality when comparing values to value pattern"), CONFIG_FLAGS_FIXED_VALUE),
987
		OPT_END(),
988
	};
989
	int ret;
990

991
	argc = parse_options(argc, argv, prefix, opts, builtin_config_unset_usage,
992
			     PARSE_OPT_STOP_AT_NON_OPTION);
993
	check_argc(argc, 1, 1);
994

995
	if ((flags & CONFIG_FLAGS_FIXED_VALUE) && !value_pattern)
996
		die(_("--fixed-value only applies with 'value-pattern'"));
997

998
	location_options_init(&location_opts, prefix);
999
	check_write(&location_opts.source);
1000

1001
	if ((flags & CONFIG_FLAGS_MULTI_REPLACE) || value_pattern)
1002
		ret = git_config_set_multivar_in_file_gently(location_opts.source.file,
1003
							     argv[0], NULL, value_pattern,
1004
							     NULL, flags);
1005
	else
1006
		ret = git_config_set_in_file_gently(location_opts.source.file, argv[0],
1007
						    NULL, NULL);
1008

1009
	location_options_release(&location_opts);
1010
	return ret;
1011
}
1012

1013
static int cmd_config_rename_section(int argc, const char **argv, const char *prefix)
1014
{
1015
	struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
1016
	struct option opts[] = {
1017
		CONFIG_LOCATION_OPTIONS(location_opts),
1018
		OPT_END(),
1019
	};
1020
	int ret;
1021

1022
	argc = parse_options(argc, argv, prefix, opts, builtin_config_rename_section_usage,
1023
			     PARSE_OPT_STOP_AT_NON_OPTION);
1024
	check_argc(argc, 2, 2);
1025

1026
	location_options_init(&location_opts, prefix);
1027
	check_write(&location_opts.source);
1028

1029
	ret = repo_config_rename_section_in_file(the_repository, location_opts.source.file,
1030
						 argv[0], argv[1]);
1031
	if (ret < 0)
1032
		goto out;
1033
	else if (!ret)
1034
		die(_("no such section: %s"), argv[0]);
1035
	ret = 0;
1036

1037
out:
1038
	location_options_release(&location_opts);
1039
	return ret;
1040
}
1041

1042
static int cmd_config_remove_section(int argc, const char **argv, const char *prefix)
1043
{
1044
	struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
1045
	struct option opts[] = {
1046
		CONFIG_LOCATION_OPTIONS(location_opts),
1047
		OPT_END(),
1048
	};
1049
	int ret;
1050

1051
	argc = parse_options(argc, argv, prefix, opts, builtin_config_remove_section_usage,
1052
			     PARSE_OPT_STOP_AT_NON_OPTION);
1053
	check_argc(argc, 1, 1);
1054

1055
	location_options_init(&location_opts, prefix);
1056
	check_write(&location_opts.source);
1057

1058
	ret = repo_config_rename_section_in_file(the_repository, location_opts.source.file,
1059
						 argv[0], NULL);
1060
	if (ret < 0)
1061
		goto out;
1062
	else if (!ret)
1063
		die(_("no such section: %s"), argv[0]);
1064
	ret = 0;
1065

1066
out:
1067
	location_options_release(&location_opts);
1068
	return ret;
1069
}
1070

1071
static int show_editor(struct config_location_options *opts)
1072
{
1073
	char *config_file;
1074

1075
	if (!opts->source.file && !startup_info->have_repository)
1076
		die(_("not in a git directory"));
1077
	if (opts->source.use_stdin)
1078
		die(_("editing stdin is not supported"));
1079
	if (opts->source.blob)
1080
		die(_("editing blobs is not supported"));
1081
	git_config(git_default_config, NULL);
1082
	config_file = opts->source.file ?
1083
			xstrdup(opts->source.file) :
1084
			git_pathdup("config");
1085
	if (opts->use_global_config) {
1086
		int fd = open(config_file, O_CREAT | O_EXCL | O_WRONLY, 0666);
1087
		if (fd >= 0) {
1088
			char *content = default_user_config();
1089
			write_str_in_full(fd, content);
1090
			free(content);
1091
			close(fd);
1092
		}
1093
		else if (errno != EEXIST)
1094
			die_errno(_("cannot create configuration file %s"), config_file);
1095
	}
1096
	launch_editor(config_file, NULL, NULL);
1097
	free(config_file);
1098

1099
	return 0;
1100
}
1101

1102
static int cmd_config_edit(int argc, const char **argv, const char *prefix)
1103
{
1104
	struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
1105
	struct option opts[] = {
1106
		CONFIG_LOCATION_OPTIONS(location_opts),
1107
		OPT_END(),
1108
	};
1109
	int ret;
1110

1111
	argc = parse_options(argc, argv, prefix, opts, builtin_config_edit_usage, 0);
1112
	check_argc(argc, 0, 0);
1113

1114
	location_options_init(&location_opts, prefix);
1115
	check_write(&location_opts.source);
1116

1117
	ret = show_editor(&location_opts);
1118
	location_options_release(&location_opts);
1119
	return ret;
1120
}
1121

1122
static int cmd_config_actions(int argc, const char **argv, const char *prefix)
1123
{
1124
	enum {
1125
		ACTION_GET = (1<<0),
1126
		ACTION_GET_ALL = (1<<1),
1127
		ACTION_GET_REGEXP = (1<<2),
1128
		ACTION_REPLACE_ALL = (1<<3),
1129
		ACTION_ADD = (1<<4),
1130
		ACTION_UNSET = (1<<5),
1131
		ACTION_UNSET_ALL = (1<<6),
1132
		ACTION_RENAME_SECTION = (1<<7),
1133
		ACTION_REMOVE_SECTION = (1<<8),
1134
		ACTION_LIST = (1<<9),
1135
		ACTION_EDIT = (1<<10),
1136
		ACTION_SET = (1<<11),
1137
		ACTION_SET_ALL = (1<<12),
1138
		ACTION_GET_COLOR = (1<<13),
1139
		ACTION_GET_COLORBOOL = (1<<14),
1140
		ACTION_GET_URLMATCH = (1<<15),
1141
	};
1142
	struct config_location_options location_opts = CONFIG_LOCATION_OPTIONS_INIT;
1143
	struct config_display_options display_opts = CONFIG_DISPLAY_OPTIONS_INIT;
1144
	const char *comment_arg = NULL;
1145
	int actions = 0;
1146
	unsigned flags = 0;
1147
	struct option opts[] = {
1148
		CONFIG_LOCATION_OPTIONS(location_opts),
1149
		OPT_GROUP(N_("Action")),
1150
		OPT_CMDMODE(0, "get", &actions, N_("get value: name [<value-pattern>]"), ACTION_GET),
1151
		OPT_CMDMODE(0, "get-all", &actions, N_("get all values: key [<value-pattern>]"), ACTION_GET_ALL),
1152
		OPT_CMDMODE(0, "get-regexp", &actions, N_("get values for regexp: name-regex [<value-pattern>]"), ACTION_GET_REGEXP),
1153
		OPT_CMDMODE(0, "get-urlmatch", &actions, N_("get value specific for the URL: section[.var] URL"), ACTION_GET_URLMATCH),
1154
		OPT_CMDMODE(0, "replace-all", &actions, N_("replace all matching variables: name value [<value-pattern>]"), ACTION_REPLACE_ALL),
1155
		OPT_CMDMODE(0, "add", &actions, N_("add a new variable: name value"), ACTION_ADD),
1156
		OPT_CMDMODE(0, "unset", &actions, N_("remove a variable: name [<value-pattern>]"), ACTION_UNSET),
1157
		OPT_CMDMODE(0, "unset-all", &actions, N_("remove all matches: name [<value-pattern>]"), ACTION_UNSET_ALL),
1158
		OPT_CMDMODE(0, "rename-section", &actions, N_("rename section: old-name new-name"), ACTION_RENAME_SECTION),
1159
		OPT_CMDMODE(0, "remove-section", &actions, N_("remove a section: name"), ACTION_REMOVE_SECTION),
1160
		OPT_CMDMODE('l', "list", &actions, N_("list all"), ACTION_LIST),
1161
		OPT_CMDMODE('e', "edit", &actions, N_("open an editor"), ACTION_EDIT),
1162
		OPT_CMDMODE(0, "get-color", &actions, N_("find the color configured: slot [<default>]"), ACTION_GET_COLOR),
1163
		OPT_CMDMODE(0, "get-colorbool", &actions, N_("find the color setting: slot [<stdout-is-tty>]"), ACTION_GET_COLORBOOL),
1164
		CONFIG_DISPLAY_OPTIONS(display_opts),
1165
		OPT_GROUP(N_("Other")),
1166
		OPT_STRING(0, "default", &display_opts.default_value,
1167
			   N_("value"), N_("with --get, use default value when missing entry")),
1168
		OPT_STRING(0, "comment", &comment_arg, N_("value"), N_("human-readable comment string (# will be prepended as needed)")),
1169
		OPT_BIT(0, "fixed-value", &flags, N_("use string equality when comparing values to value pattern"), CONFIG_FLAGS_FIXED_VALUE),
1170
		OPT_BOOL(0, "includes", &location_opts.respect_includes_opt,
1171
			 N_("respect include directives on lookup")),
1172
		OPT_END(),
1173
	};
1174
	char *value = NULL, *comment = NULL;
1175
	int ret = 0;
1176
	struct key_value_info default_kvi = KVI_INIT;
1177

1178
	argc = parse_options(argc, argv, prefix, opts,
1179
			     builtin_config_usage,
1180
			     PARSE_OPT_STOP_AT_NON_OPTION);
1181

1182
	location_options_init(&location_opts, prefix);
1183
	display_options_init(&display_opts);
1184

1185
	if ((actions & (ACTION_GET_COLOR|ACTION_GET_COLORBOOL)) && display_opts.type) {
1186
		error(_("--get-color and variable type are incoherent"));
1187
		exit(129);
1188
	}
1189

1190
	if (actions == 0)
1191
		switch (argc) {
1192
		case 1: actions = ACTION_GET; break;
1193
		case 2: actions = ACTION_SET; break;
1194
		case 3: actions = ACTION_SET_ALL; break;
1195
		default:
1196
			error(_("no action specified"));
1197
			exit(129);
1198
		}
1199
	if (display_opts.omit_values &&
1200
	    !(actions == ACTION_LIST || actions == ACTION_GET_REGEXP)) {
1201
		error(_("--name-only is only applicable to --list or --get-regexp"));
1202
		exit(129);
1203
	}
1204

1205
	if (display_opts.show_origin && !(actions &
1206
		(ACTION_GET|ACTION_GET_ALL|ACTION_GET_REGEXP|ACTION_LIST))) {
1207
		error(_("--show-origin is only applicable to --get, --get-all, "
1208
			"--get-regexp, and --list"));
1209
		exit(129);
1210
	}
1211

1212
	if (display_opts.default_value && !(actions & ACTION_GET)) {
1213
		error(_("--default is only applicable to --get"));
1214
		exit(129);
1215
	}
1216

1217
	if (comment_arg &&
1218
	    !(actions & (ACTION_ADD|ACTION_SET|ACTION_SET_ALL|ACTION_REPLACE_ALL))) {
1219
		error(_("--comment is only applicable to add/set/replace operations"));
1220
		exit(129);
1221
	}
1222

1223
	/* check usage of --fixed-value */
1224
	if (flags & CONFIG_FLAGS_FIXED_VALUE) {
1225
		int allowed_usage = 0;
1226

1227
		switch (actions) {
1228
		/* git config --get <name> <value-pattern> */
1229
		case ACTION_GET:
1230
		/* git config --get-all <name> <value-pattern> */
1231
		case ACTION_GET_ALL:
1232
		/* git config --get-regexp <name-pattern> <value-pattern> */
1233
		case ACTION_GET_REGEXP:
1234
		/* git config --unset <name> <value-pattern> */
1235
		case ACTION_UNSET:
1236
		/* git config --unset-all <name> <value-pattern> */
1237
		case ACTION_UNSET_ALL:
1238
			allowed_usage = argc > 1 && !!argv[1];
1239
			break;
1240

1241
		/* git config <name> <value> <value-pattern> */
1242
		case ACTION_SET_ALL:
1243
		/* git config --replace-all <name> <value> <value-pattern> */
1244
		case ACTION_REPLACE_ALL:
1245
			allowed_usage = argc > 2 && !!argv[2];
1246
			break;
1247

1248
		/* other options don't allow --fixed-value */
1249
		}
1250

1251
		if (!allowed_usage) {
1252
			error(_("--fixed-value only applies with 'value-pattern'"));
1253
			exit(129);
1254
		}
1255
	}
1256

1257
	comment = git_config_prepare_comment_string(comment_arg);
1258

1259
	/*
1260
	 * The following actions may produce more than one line of output and
1261
	 * should therefore be paged.
1262
	 */
1263
	if (actions & (ACTION_LIST | ACTION_GET_ALL | ACTION_GET_REGEXP | ACTION_GET_URLMATCH))
1264
		setup_auto_pager("config", 1);
1265

1266
	if (actions == ACTION_LIST) {
1267
		check_argc(argc, 0, 0);
1268
		if (config_with_options(show_all_config, &display_opts,
1269
					&location_opts.source, the_repository,
1270
					&location_opts.options) < 0) {
1271
			if (location_opts.source.file)
1272
				die_errno(_("unable to read config file '%s'"),
1273
					  location_opts.source.file);
1274
			else
1275
				die(_("error processing config file(s)"));
1276
		}
1277
	}
1278
	else if (actions == ACTION_EDIT) {
1279
		ret = show_editor(&location_opts);
1280
	}
1281
	else if (actions == ACTION_SET) {
1282
		check_write(&location_opts.source);
1283
		check_argc(argc, 2, 2);
1284
		value = normalize_value(argv[0], argv[1], display_opts.type, &default_kvi);
1285
		ret = git_config_set_in_file_gently(location_opts.source.file, argv[0], comment, value);
1286
		if (ret == CONFIG_NOTHING_SET)
1287
			error(_("cannot overwrite multiple values with a single value\n"
1288
			"       Use a regexp, --add or --replace-all to change %s."), argv[0]);
1289
	}
1290
	else if (actions == ACTION_SET_ALL) {
1291
		check_write(&location_opts.source);
1292
		check_argc(argc, 2, 3);
1293
		value = normalize_value(argv[0], argv[1], display_opts.type, &default_kvi);
1294
		ret = git_config_set_multivar_in_file_gently(location_opts.source.file,
1295
							     argv[0], value, argv[2],
1296
							     comment, flags);
1297
	}
1298
	else if (actions == ACTION_ADD) {
1299
		check_write(&location_opts.source);
1300
		check_argc(argc, 2, 2);
1301
		value = normalize_value(argv[0], argv[1], display_opts.type, &default_kvi);
1302
		ret = git_config_set_multivar_in_file_gently(location_opts.source.file,
1303
							     argv[0], value,
1304
							     CONFIG_REGEX_NONE,
1305
							     comment, flags);
1306
	}
1307
	else if (actions == ACTION_REPLACE_ALL) {
1308
		check_write(&location_opts.source);
1309
		check_argc(argc, 2, 3);
1310
		value = normalize_value(argv[0], argv[1], display_opts.type, &default_kvi);
1311
		ret = git_config_set_multivar_in_file_gently(location_opts.source.file,
1312
							     argv[0], value, argv[2],
1313
							     comment, flags | CONFIG_FLAGS_MULTI_REPLACE);
1314
	}
1315
	else if (actions == ACTION_GET) {
1316
		check_argc(argc, 1, 2);
1317
		ret = get_value(&location_opts, &display_opts, argv[0], argv[1],
1318
				0, flags);
1319
	}
1320
	else if (actions == ACTION_GET_ALL) {
1321
		check_argc(argc, 1, 2);
1322
		ret = get_value(&location_opts, &display_opts, argv[0], argv[1],
1323
				GET_VALUE_ALL, flags);
1324
	}
1325
	else if (actions == ACTION_GET_REGEXP) {
1326
		display_opts.show_keys = 1;
1327
		check_argc(argc, 1, 2);
1328
		ret = get_value(&location_opts, &display_opts, argv[0], argv[1],
1329
				GET_VALUE_ALL|GET_VALUE_KEY_REGEXP, flags);
1330
	}
1331
	else if (actions == ACTION_GET_URLMATCH) {
1332
		check_argc(argc, 2, 2);
1333
		ret = get_urlmatch(&location_opts, &display_opts, argv[0], argv[1]);
1334
	}
1335
	else if (actions == ACTION_UNSET) {
1336
		check_write(&location_opts.source);
1337
		check_argc(argc, 1, 2);
1338
		if (argc == 2)
1339
			ret = git_config_set_multivar_in_file_gently(location_opts.source.file,
1340
								     argv[0], NULL, argv[1],
1341
								     NULL, flags);
1342
		else
1343
			ret = git_config_set_in_file_gently(location_opts.source.file,
1344
							    argv[0], NULL, NULL);
1345
	}
1346
	else if (actions == ACTION_UNSET_ALL) {
1347
		check_write(&location_opts.source);
1348
		check_argc(argc, 1, 2);
1349
		ret = git_config_set_multivar_in_file_gently(location_opts.source.file,
1350
							     argv[0], NULL, argv[1],
1351
							     NULL, flags | CONFIG_FLAGS_MULTI_REPLACE);
1352
	}
1353
	else if (actions == ACTION_RENAME_SECTION) {
1354
		check_write(&location_opts.source);
1355
		check_argc(argc, 2, 2);
1356
		ret = repo_config_rename_section_in_file(the_repository, location_opts.source.file,
1357
							 argv[0], argv[1]);
1358
		if (ret < 0)
1359
			goto out;
1360
		else if (!ret)
1361
			die(_("no such section: %s"), argv[0]);
1362
		else
1363
			ret = 0;
1364
	}
1365
	else if (actions == ACTION_REMOVE_SECTION) {
1366
		check_write(&location_opts.source);
1367
		check_argc(argc, 1, 1);
1368
		ret = repo_config_rename_section_in_file(the_repository, location_opts.source.file,
1369
							 argv[0], NULL);
1370
		if (ret < 0)
1371
			goto out;
1372
		else if (!ret)
1373
			die(_("no such section: %s"), argv[0]);
1374
		else
1375
			ret = 0;
1376
	}
1377
	else if (actions == ACTION_GET_COLOR) {
1378
		check_argc(argc, 1, 2);
1379
		get_color(&location_opts, argv[0], argv[1]);
1380
	}
1381
	else if (actions == ACTION_GET_COLORBOOL) {
1382
		check_argc(argc, 1, 2);
1383
		if (argc == 2)
1384
			color_stdout_is_tty = git_config_bool("command line", argv[1]);
1385
		ret = get_colorbool(&location_opts, argv[0], argc == 2);
1386
	}
1387

1388
out:
1389
	location_options_release(&location_opts);
1390
	free(comment);
1391
	free(value);
1392
	return ret;
1393
}
1394

1395
int cmd_config(int argc, const char **argv, const char *prefix)
1396
{
1397
	parse_opt_subcommand_fn *subcommand = NULL;
1398
	struct option subcommand_opts[] = {
1399
		OPT_SUBCOMMAND("list", &subcommand, cmd_config_list),
1400
		OPT_SUBCOMMAND("get", &subcommand, cmd_config_get),
1401
		OPT_SUBCOMMAND("set", &subcommand, cmd_config_set),
1402
		OPT_SUBCOMMAND("unset", &subcommand, cmd_config_unset),
1403
		OPT_SUBCOMMAND("rename-section", &subcommand, cmd_config_rename_section),
1404
		OPT_SUBCOMMAND("remove-section", &subcommand, cmd_config_remove_section),
1405
		OPT_SUBCOMMAND("edit", &subcommand, cmd_config_edit),
1406
		OPT_END(),
1407
	};
1408

1409
	/*
1410
	 * This is somewhat hacky: we first parse the command line while
1411
	 * keeping all args intact in order to determine whether a subcommand
1412
	 * has been specified. If so, we re-parse it a second time, but this
1413
	 * time we drop KEEP_ARGV0. This is so that we don't munge the command
1414
	 * line in case no subcommand was given, which would otherwise confuse
1415
	 * us when parsing the legacy-style modes that don't use subcommands.
1416
	 */
1417
	argc = parse_options(argc, argv, prefix, subcommand_opts, builtin_config_usage,
1418
			     PARSE_OPT_SUBCOMMAND_OPTIONAL|PARSE_OPT_KEEP_ARGV0|PARSE_OPT_KEEP_UNKNOWN_OPT);
1419
	if (subcommand) {
1420
		argc = parse_options(argc, argv, prefix, subcommand_opts, builtin_config_usage,
1421
		       PARSE_OPT_SUBCOMMAND_OPTIONAL|PARSE_OPT_KEEP_UNKNOWN_OPT);
1422
		return subcommand(argc, argv, prefix);
1423
	}
1424

1425
	return cmd_config_actions(argc, argv, prefix);
1426
}
1427