aboutsummaryrefslogtreecommitdiff
path: root/common/config-manager.cpp
blob: fbdb611f3cb64d80e4eba290962a631533c387cb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include "common/config-manager.h"
#include "common/debug.h"
#include "common/file.h"
#include "common/fs.h"
#include "common/system.h"
#include "common/textconsole.h"

static bool isValidDomainName(const Common::String &domName) {
	const char *p = domName.c_str();
	while (*p && (isalnum(static_cast<unsigned char>(*p)) || *p == '-' || *p == '_'))
		p++;
	return *p == 0;
}

namespace Common {

DECLARE_SINGLETON(ConfigManager);

const char *ConfigManager::kApplicationDomain = "scummvm";
const char *ConfigManager::kTransientDomain = "__TRANSIENT";

#ifdef ENABLE_KEYMAPPER
const char *ConfigManager::kKeymapperDomain = "keymapper";
#endif

#pragma mark -


ConfigManager::ConfigManager() : _activeDomain(0) {
}

void ConfigManager::defragment() {
	ConfigManager *newInstance = new ConfigManager();
	newInstance->copyFrom(*_singleton);
	delete _singleton;
	_singleton = newInstance;
}

void ConfigManager::copyFrom(ConfigManager &source) {
	_transientDomain = source._transientDomain;
	_gameDomains = source._gameDomains;
	_miscDomains = source._miscDomains;
	_appDomain = source._appDomain;
	_defaultsDomain = source._defaultsDomain;
#ifdef ENABLE_KEYMAPPER
	_keymapperDomain = source._keymapperDomain;
#endif
	_domainSaveOrder = source._domainSaveOrder;
	_activeDomainName = source._activeDomainName;
	_activeDomain = &_gameDomains[_activeDomainName];
	_filename = source._filename;
}


void ConfigManager::loadDefaultConfigFile() {
	// Open the default config file
	assert(g_system);
	SeekableReadStream *stream = g_system->createConfigReadStream();
	_filename.clear();  // clear the filename to indicate that we are using the default config file

	// ... load it, if available ...
	if (stream) {
		loadFromStream(*stream);

		// ... and close it again.
		delete stream;

	} else {
		// No config file -> create new one!
		debug("Default configuration file missing, creating a new one");

		flushToDisk();
	}
}

void ConfigManager::loadConfigFile(const String &filename) {
	_filename = filename;

	FSNode node(filename);
	File cfg_file;
	if (!cfg_file.open(node)) {
		debug("Creating configuration file: %s", filename.c_str());
	} else {
		debug("Using configuration file: %s", _filename.c_str());
		loadFromStream(cfg_file);
	}
}

/**
 * Add a ready-made domain based on its name and contents
 * The domain name should not already exist in the ConfigManager.
 **/
void ConfigManager::addDomain(const Common::String &domainName, const ConfigManager::Domain &domain) {
	if (domainName.empty())
		return;
	if (domainName == kApplicationDomain) {
		_appDomain = domain;
#ifdef ENABLE_KEYMAPPER
	} else if (domainName == kKeymapperDomain) {
		_keymapperDomain = domain;
#endif
	} else if (domain.contains("gameid")) {
		// If the domain contains "gameid" we assume it's a game domain
		if (_gameDomains.contains(domainName))
			warning("Game domain %s already exists in ConfigManager", domainName.c_str());

		_gameDomains[domainName] = domain;

		_domainSaveOrder.push_back(domainName);

		// Check if we have the same misc domain. For older config files
		// we could have 'ghost' domains with the same name, so delete
		// the ghost domain
		if (_miscDomains.contains(domainName))
			_miscDomains.erase(domainName);
	} else {
		// Otherwise it's a miscellaneous domain
		if (_miscDomains.contains(domainName))
			warning("Misc domain %s already exists in ConfigManager", domainName.c_str());

		_miscDomains[domainName] = domain;
	}
}


void ConfigManager::loadFromStream(SeekableReadStream &stream) {
	String domainName;
	String comment;
	Domain domain;
	int lineno = 0;

	_appDomain.clear();
	_gameDomains.clear();
	_miscDomains.clear();
	_transientDomain.clear();
	_domainSaveOrder.clear();

#ifdef ENABLE_KEYMAPPER
	_keymapperDomain.clear();
#endif

	// TODO: Detect if a domain occurs multiple times (or likewise, if
	// a key occurs multiple times inside one domain).

	while (!stream.eos() && !stream.err()) {
		lineno++;

		// Read a line
		String line = stream.readLine();

		if (line.size() == 0) {
			// Do nothing
		} else if (line[0] == '#') {
			// Accumulate comments here. Once we encounter either the start
			// of a new domain, or a key-value-pair, we associate the value
			// of the 'comment' variable with that entity.
			comment += line;
			comment += "\n";
		} else if (line[0] == '[') {
			// It's a new domain which begins here.
			// Determine where the previously accumulated domain goes, if we accumulated anything.
			addDomain(domainName, domain);
			domain.clear();
			const char *p = line.c_str() + 1;
			// Get the domain name, and check whether it's valid (that
			// is, verify that it only consists of alphanumerics,
			// dashes and underscores).
			while (*p && (isalnum(static_cast<unsigned char>(*p)) || *p == '-' || *p == '_'))
				p++;

			if (*p == '\0')
				error("Config file buggy: missing ] in line %d", lineno);
			else if (*p != ']')
				error("Config file buggy: Invalid character '%c' occurred in section name in line %d", *p, lineno);

			domainName = String(line.c_str() + 1, p);

			domain.setDomainComment(comment);
			comment.clear();

		} else {
			// This line should be a line with a 'key=value' pair, or an empty one.

			// Skip leading whitespaces
			const char *t = line.c_str();
			while (isspace(static_cast<unsigned char>(*t)))
				t++;

			// Skip empty lines / lines with only whitespace
			if (*t == 0)
				continue;

			// If no domain has been set, this config file is invalid!
			if (domainName.empty()) {
				error("Config file buggy: Key/value pair found outside a domain in line %d", lineno);
			}

			// Split string at '=' into 'key' and 'value'. First, find the "=" delimeter.
			const char *p = strchr(t, '=');
			if (!p)
				error("Config file buggy: Junk found in line line %d: '%s'", lineno, t);

			// Extract the key/value pair
			String key(t, p);
			String value(p + 1);

			// Trim of spaces
			key.trim();
			value.trim();

			// Finally, store the key/value pair in the active domain
			domain[key] = value;

			// Store comment
			domain.setKVComment(key, comment);
			comment.clear();
		}
	}

	addDomain(domainName, domain); // Add the last domain found
}

void ConfigManager::flushToDisk() {
#ifndef __DC__
	WriteStream *stream;

	if (_filename.empty()) {
		// Write to the default config file
		assert(g_system);
		stream = g_system->createConfigWriteStream();
		if (!stream)    // If writing to the config file is not possible, do nothing
			return;
	} else {
		DumpFile *dump = new DumpFile();
		assert(dump);

		if (!dump->open(_filename)) {
			warning("Unable to write configuration file: %s", _filename.c_str());
			delete dump;
			return;
		}

		stream = dump;
	}

	// Write the application domain
	writeDomain(*stream, kApplicationDomain, _appDomain);

#ifdef ENABLE_KEYMAPPER
	// Write the keymapper domain
	writeDomain(*stream, kKeymapperDomain, _keymapperDomain);
#endif

	DomainMap::const_iterator d;

	// Write the miscellaneous domains next
	for (d = _miscDomains.begin(); d != _miscDomains.end(); ++d) {
		writeDomain(*stream, d->_key, d->_value);
	}

	// First write the domains in _domainSaveOrder, in that order.
	// Note: It's possible for _domainSaveOrder to list domains which
	// are not present anymore, so we validate each name.
	Array<String>::const_iterator i;
	for (i = _domainSaveOrder.begin(); i != _domainSaveOrder.end(); ++i) {
		if (_gameDomains.contains(*i)) {
			writeDomain(*stream, *i, _gameDomains[*i]);
		}
	}

	// Now write the domains which haven't been written yet
	for (d = _gameDomains.begin(); d != _gameDomains.end(); ++d) {
		if (find(_domainSaveOrder.begin(), _domainSaveOrder.end(), d->_key) == _domainSaveOrder.end())
			writeDomain(*stream, d->_key, d->_value);
	}

	delete stream;

#endif // !__DC__
}

void ConfigManager::writeDomain(WriteStream &stream, const String &name, const Domain &domain) {
	if (domain.empty())
		return;     // Don't bother writing empty domains.

	// WORKAROUND: Fix for bug #1972625 "ALL: On-the-fly targets are
	// written to the config file": Do not save domains that came from
	// the command line
	if (domain.contains("id_came_from_command_line"))
		return;

	String comment;

	// Write domain comment (if any)
	comment = domain.getDomainComment();
	if (!comment.empty())
		stream.writeString(comment);

	// Write domain start
	stream.writeByte('[');
	stream.writeString(name);
	stream.writeByte(']');
	stream.writeByte('\n');

	// Write all key/value pairs in this domain, including comments
	Domain::const_iterator x;
	for (x = domain.begin(); x != domain.end(); ++x) {
		if (!x->_value.empty()) {
			// Write comment (if any)
			if (domain.hasKVComment(x->_key)) {
				comment = domain.getKVComment(x->_key);
				stream.writeString(comment);
			}
			// Write the key/value pair
			stream.writeString(x->_key);
			stream.writeByte('=');
			stream.writeString(x->_value);
			stream.writeByte('\n');
		}
	}
	stream.writeByte('\n');
}


#pragma mark -


const ConfigManager::Domain *ConfigManager::getDomain(const String &domName) const {
	assert(!domName.empty());
	assert(isValidDomainName(domName));

	if (domName == kTransientDomain)
		return &_transientDomain;
	if (domName == kApplicationDomain)
		return &_appDomain;
#ifdef ENABLE_KEYMAPPER
	if (domName == kKeymapperDomain)
		return &_keymapperDomain;
#endif
	if (_gameDomains.contains(domName))
		return &_gameDomains[domName];
	if (_miscDomains.contains(domName))
		return &_miscDomains[domName];

	return 0;
}

ConfigManager::Domain *ConfigManager::getDomain(const String &domName) {
	assert(!domName.empty());
	assert(isValidDomainName(domName));

	if (domName == kTransientDomain)
		return &_transientDomain;
	if (domName == kApplicationDomain)
		return &_appDomain;
#ifdef ENABLE_KEYMAPPER
	if (domName == kKeymapperDomain)
		return &_keymapperDomain;
#endif
	if (_gameDomains.contains(domName))
		return &_gameDomains[domName];
	if (_miscDomains.contains(domName))
		return &_miscDomains[domName];

	return 0;
}


#pragma mark -


bool ConfigManager::hasKey(const String &key) const {
	// Search the domains in the following order:
	// 1) the transient domain,
	// 2) the active game domain (if any),
	// 3) the application domain.
	// The defaults domain is explicitly *not* checked.

	if (_transientDomain.contains(key))
		return true;

	if (_activeDomain && _activeDomain->contains(key))
		return true;

	if (_appDomain.contains(key))
		return true;

	return false;
}

bool ConfigManager::hasKey(const String &key, const String &domName) const {
	// FIXME: For now we continue to allow empty domName to indicate
	// "use 'default' domain". This is mainly needed for the SCUMM ConfigDialog
	// and should be removed ASAP.
	if (domName.empty())
		return hasKey(key);

	const Domain *domain = getDomain(domName);

	if (!domain)
		return false;
	return domain->contains(key);
}

void ConfigManager::removeKey(const String &key, const String &domName) {
	Domain *domain = getDomain(domName);

	if (!domain)
		error("ConfigManager::removeKey(%s, %s) called on non-existent domain",
		      key.c_str(), domName.c_str());

	domain->erase(key);
}


#pragma mark -


const String &ConfigManager::get(const String &key) const {
	if (_transientDomain.contains(key))
		return _transientDomain[key];
	else if (_activeDomain && _activeDomain->contains(key))
		return (*_activeDomain)[key];
	else if (_appDomain.contains(key))
		return _appDomain[key];

	return _defaultsDomain.getVal(key);
}

const String &ConfigManager::get(const String &key, const String &domName) const {
	// FIXME: For now we continue to allow empty domName to indicate
	// "use 'default' domain". This is mainly needed for the SCUMM ConfigDialog
	// and should be removed ASAP.
	if (domName.empty())
		return get(key);

	const Domain *domain = getDomain(domName);

	if (!domain)
		error("ConfigManager::get(%s,%s) called on non-existent domain",
		      key.c_str(), domName.c_str());

	if (domain->contains(key))
		return (*domain)[key];

	return _defaultsDomain.getVal(key);
}

int ConfigManager::getInt(const String &key, const String &domName) const {
	String value(get(key, domName));
	char *errpos;

	// For now, be tolerant against missing config keys. Strictly spoken, it is
	// a bug in the calling code to retrieve an int for a key which isn't even
	// present... and a default value of 0 seems rather arbitrary.
	if (value.empty())
		return 0;

	// We use the special value '0' for the base passed to strtol. Doing that
	// makes it possible to enter hex values as "0x1234", but also decimal
	// values ("123") are still valid.
	int ivalue = (int)strtol(value.c_str(), &errpos, 0);
	if (value.c_str() == errpos)
		error("ConfigManager::getInt(%s,%s): '%s' is not a valid integer",
		      key.c_str(), domName.c_str(), errpos);

	return ivalue;
}

bool ConfigManager::getBool(const String &key, const String &domName) const {
	String value(get(key, domName));
	bool val;
	if (Common::parseBool(value, val))
		return val;

	error("ConfigManager::getBool(%s,%s): '%s' is not a valid bool",
	      key.c_str(), domName.c_str(), value.c_str());
}


#pragma mark -


void ConfigManager::set(const String &key, const String &value) {
	// Remove the transient domain value, if any.
	_transientDomain.erase(key);

	// Write the new key/value pair into the active domain, resp. into
	// the application domain if no game domain is active.
	if (_activeDomain)
		(*_activeDomain)[key] = value;
	else
		_appDomain[key] = value;
}

void ConfigManager::set(const String &key, const String &value, const String &domName) {
	// FIXME: For now we continue to allow empty domName to indicate
	// "use 'default' domain". This is mainly needed for the SCUMM ConfigDialog
	// and should be removed ASAP.
	if (domName.empty()) {
		set(key, value);
		return;
	}

	Domain *domain = getDomain(domName);

	if (!domain)
		error("ConfigManager::set(%s,%s,%s) called on non-existent domain",
		      key.c_str(), value.c_str(), domName.c_str());

	(*domain)[key] = value;

	// TODO/FIXME: We used to erase the given key from the transient domain
	// here. Do we still want to do that?
	// It was probably there to simplify the options dialogs code:
	// Imagine you are editing the current options (via the SCUMM ConfigDialog,
	// for example). If you edit the game domain for that, but a matching
	// entry in the transient domain is present, than your changes may not take
	// effect. So you want to remove the key from the transient domain before
	// adding it to the active domain.
	// But doing this here seems rather evil... need to comb the options dialog
	// code to find out if it's still necessary, and if that's the case, how
	// to replace it in a clean fashion...
#if 0
	if (domName == kTransientDomain)
		_transientDomain[key] = value;
	else {
		if (domName == kApplicationDomain) {
			_appDomain[key] = value;
			if (_activeDomainName.empty() || !_gameDomains[_activeDomainName].contains(key))
				_transientDomain.erase(key);
		} else {
			_gameDomains[domName][key] = value;
			if (domName == _activeDomainName)
				_transientDomain.erase(key);
		}
	}
#endif
}

void ConfigManager::setInt(const String &key, int value, const String &domName) {
	set(key, String::format("%i", value), domName);
}

void ConfigManager::setBool(const String &key, bool value, const String &domName) {
	set(key, String(value ? "true" : "false"), domName);
}


#pragma mark -


void ConfigManager::registerDefault(const String &key, const String &value) {
	_defaultsDomain[key] = value;
}

void ConfigManager::registerDefault(const String &key, const char *value) {
	registerDefault(key, String(value));
}

void ConfigManager::registerDefault(const String &key, int value) {
	registerDefault(key, String::format("%i", value));
}

void ConfigManager::registerDefault(const String &key, bool value) {
	registerDefault(key, value ? "true" : "false");
}


#pragma mark -


void ConfigManager::setActiveDomain(const String &domName) {
	if (domName.empty()) {
		_activeDomain = 0;
	} else {
		assert(isValidDomainName(domName));
		_activeDomain = & _gameDomains[domName];
	}
	_activeDomainName = domName;
}

void ConfigManager::addGameDomain(const String &domName) {
	assert(!domName.empty());
	assert(isValidDomainName(domName));

	// TODO: Do we want to generate an error/warning if a domain with
	// the given name already exists?

	_gameDomains[domName];

	// Add it to the _domainSaveOrder, if it's not already in there
	if (find(_domainSaveOrder.begin(), _domainSaveOrder.end(), domName) == _domainSaveOrder.end())
		_domainSaveOrder.push_back(domName);
}

void ConfigManager::addMiscDomain(const String &domName) {
	assert(!domName.empty());
	assert(isValidDomainName(domName));

	_miscDomains[domName];
}

void ConfigManager::removeGameDomain(const String &domName) {
	assert(!domName.empty());
	assert(isValidDomainName(domName));
	_gameDomains.erase(domName);
}

void ConfigManager::removeMiscDomain(const String &domName) {
	assert(!domName.empty());
	assert(isValidDomainName(domName));
	_miscDomains.erase(domName);
}


void ConfigManager::renameGameDomain(const String &oldName, const String &newName) {
	renameDomain(oldName, newName, _gameDomains);
}

void ConfigManager::renameMiscDomain(const String &oldName, const String &newName) {
	renameDomain(oldName, newName, _miscDomains);
}

/**
 * Common private function to rename both game and misc domains
 **/
void ConfigManager::renameDomain(const String &oldName, const String &newName, DomainMap &map) {
	if (oldName == newName)
		return;

	assert(!oldName.empty());
	assert(!newName.empty());
	assert(isValidDomainName(oldName));
	assert(isValidDomainName(newName));

//	_gameDomains[newName].merge(_gameDomains[oldName]);
	Domain &oldDom = map[oldName];
	Domain &newDom = map[newName];
	Domain::const_iterator iter;
	for (iter = oldDom.begin(); iter != oldDom.end(); ++iter)
		newDom[iter->_key] = iter->_value;

	map.erase(oldName);
}

bool ConfigManager::hasGameDomain(const String &domName) const {
	assert(!domName.empty());
	return isValidDomainName(domName) && _gameDomains.contains(domName);
}

bool ConfigManager::hasMiscDomain(const String &domName) const {
	assert(!domName.empty());
	return isValidDomainName(domName) && _miscDomains.contains(domName);
}

#pragma mark -

void ConfigManager::Domain::setDomainComment(const String &comment) {
	_domainComment = comment;
}
const String &ConfigManager::Domain::getDomainComment() const {
	return _domainComment;
}

void ConfigManager::Domain::setKVComment(const String &key, const String &comment) {
	_keyValueComments[key] = comment;
}
const String &ConfigManager::Domain::getKVComment(const String &key) const {
	return _keyValueComments[key];
}
bool ConfigManager::Domain::hasKVComment(const String &key) const {
	return _keyValueComments.contains(key);
}

} // End of namespace Common