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/* $Id$ */

     2

     3

/** @file settings.cpp

     4

 * All actions handling saving and loading of the settings/configuration goes on in this file.

     5

 * The file consists of four parts:

     6

 * <ol>

     7

 * <li>Parsing the configuration file (openttd.cfg). This is achieved with the ini_ functions which

     8

 *     handle various types, such as normal 'key = value' pairs, lists and value combinations of

     9

 *     lists, strings, integers, 'bit'-masks and element selections.

    10

 * <li>Defining the data structures that go into the configuration. These include for example

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 *     the _patches struct, but also network-settings, banlists, newgrf, etc. There are a lot

    12

 *     of helper macros available for the various types, and also saving/loading of these settings

    13

 *     in a savegame is handled inside these structures.

    14

 * <li>Handle reading and writing to the setting-structures from inside the game either from

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 *     the console for example or through the gui with CMD_ functions.

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 * <li>Handle saving/loading of the PATS chunk inside the savegame.

    17

 * </ol>

    18

 * @see SettingDesc

    19

 * @see SaveLoad

    20

 */

    21

    22

#include "stdafx.h"

    23

#include "openttd.h"

    24

#include "currency.h"

    25

#include "screenshot.h"

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#include "variables.h"

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#include "network/network.h"

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#include "network/network_internal.h"

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#include "settings_internal.h"

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#include "command_func.h"

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#include "console.h"

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#include "saveload.h"

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#include "npf.h"

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#include "yapf/yapf.h"

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#include "newgrf.h"

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#include "newgrf_config.h"

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#include "genworld.h"

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#include "rail.h"

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#include "train.h"

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#include "news_func.h"

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#include "window_func.h"

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#include "strings_func.h"

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#include "vehicle_func.h"

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#include "sound_func.h"

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#include "core/alloc_func.hpp"

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#include "player_func.h"

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#ifdef WITH_FREETYPE

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#include "fontcache.h"

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#endif

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#include "spritecache.h"

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#include "transparency.h"

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#include "textbuf_gui.h"

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#include "string_func.h"

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#include "rail_gui.h"

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#include "gui.h"

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#include "town.h"

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#include "video/video_driver.hpp"

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#include "sound/sound_driver.hpp"

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#include "music/music_driver.hpp"

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#include "blitter/factory.hpp"

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#include "table/strings.h"

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    64

GameOptions _opt;

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GameOptions _opt_newgame;

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GameOptions *_opt_ptr;

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Patches _patches;

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Patches _patches_newgame;

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struct IniFile;

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struct IniItem;

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struct IniGroup;

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struct SettingsMemoryPool;

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    75

typedef const char *SettingListCallbackProc(const IniItem *item, uint index);

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typedef void SettingDescProc(IniFile *ini, const SettingDesc *desc, const char *grpname, void *object);

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typedef void SettingDescProcList(IniFile *ini, const char *grpname, char **list, uint len, SettingListCallbackProc proc);

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static void pool_init(SettingsMemoryPool **pool);

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static void *pool_alloc(SettingsMemoryPool **pool, uint size);

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static void *pool_strdup(SettingsMemoryPool **pool, const char *mem, uint size);

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static void pool_free(SettingsMemoryPool **pool);

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static bool IsSignedVarMemType(VarType vt);

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struct SettingsMemoryPool {

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	uint pos, size;

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	SettingsMemoryPool *next;

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	byte mem[1];

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};

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    91

static SettingsMemoryPool *pool_new(uint minsize)

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{

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	SettingsMemoryPool *p;

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	if (minsize < 4096 - 12) minsize = 4096 - 12;

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    96

	p = (SettingsMemoryPool*)MallocT<byte>(sizeof(SettingsMemoryPool) - 1 + minsize);

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	p->pos = 0;

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	p->size = minsize;

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	p->next = NULL;

   100

	return p;

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}

   102

   103

static void pool_init(SettingsMemoryPool **pool)

   104

{

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	*pool = pool_new(0);

   106

}

   107

   108

static void *pool_alloc(SettingsMemoryPool **pool, uint size)

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{

   110

	uint pos;

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	SettingsMemoryPool *p = *pool;

   112

   113

	size = Align(size, sizeof(void*));

   114

   115

	/* first check if there's memory in the next pool */

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	if (p->next && p->next->pos + size <= p->next->size) {

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		p = p->next;

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	/* then check if there's not memory in the cur pool */

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	} else if (p->pos + size > p->size) {

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		SettingsMemoryPool *n = pool_new(size);

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		*pool = n;

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		n->next = p;

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		p = n;

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	}

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   126

	pos = p->pos;

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	p->pos += size;

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	return p->mem + pos;

   129

}

   130

   131

static void *pool_strdup(SettingsMemoryPool **pool, const char *mem, uint size)

   132

{

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	byte *p = (byte*)pool_alloc(pool, size + 1);

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	p[size] = 0;

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	memcpy(p, mem, size);

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	return p;

   137

}

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   139

static void pool_free(SettingsMemoryPool **pool)

   140

{

   141

	SettingsMemoryPool *p = *pool, *n;

   142

	*pool = NULL;

   143

	while (p) {

   144

		n = p->next;

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		free(p);

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		p = n;

   147

	}

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}

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   150

/** structs describing the ini format. */

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struct IniItem {

   152

	char *name;

   153

	char *value;

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	char *comment;

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	IniItem *next;

   156

};

   157

   158

struct IniGroup {

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	char *name;        ///< name of group

   160

	char *comment;     ///<comment for group

   161

	IniItem *item, **last_item;

   162

	IniGroup *next;

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	IniFile *ini;

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	IniGroupType type; ///< type of group

   165

};

   166

   167

struct IniFile {

   168

	SettingsMemoryPool *pool;

   169

	IniGroup *group, **last_group;

   170

	char *comment;     ///< last comment in file

   171

};

   172

   173

/** allocate an inifile object */

   174

static IniFile *ini_alloc()

   175

{

   176

	IniFile *ini;

   177

	SettingsMemoryPool *pool;

   178

	pool_init(&pool);

   179

	ini = (IniFile*)pool_alloc(&pool, sizeof(IniFile));

   180

	ini->pool = pool;

   181

	ini->group = NULL;

   182

	ini->last_group = &ini->group;

   183

	ini->comment = NULL;

   184

	return ini;

   185

}

   186

   187

/** allocate an ini group object */

   188

static IniGroup *ini_group_alloc(IniFile *ini, const char *grpt, int len)

   189

{

   190

	IniGroup *grp = (IniGroup*)pool_alloc(&ini->pool, sizeof(IniGroup));

   191

	grp->ini = ini;

   192

	grp->name = (char*)pool_strdup(&ini->pool, grpt, len);

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	if (!strcmp(grp->name, "newgrf") || !strcmp(grp->name, "servers") || !strcmp(grp->name, "bans")) {

   194

		grp->type = IGT_LIST;

   195

	} else {

   196

		grp->type = IGT_VARIABLES;

   197

	}

   198

	grp->next = NULL;

   199

	grp->item = NULL;

   200

	grp->comment = NULL;

   201

	grp->last_item = &grp->item;

   202

	*ini->last_group = grp;

   203

	ini->last_group = &grp->next;

   204

	return grp;

   205

}

   206

   207

static IniItem *ini_item_alloc(IniGroup *group, const char *name, int len)

   208

{

   209

	IniItem *item = (IniItem*)pool_alloc(&group->ini->pool, sizeof(IniItem));

   210

	item->name = (char*)pool_strdup(&group->ini->pool, name, len);

   211

	item->next = NULL;

   212

	item->comment = NULL;

   213

	item->value = NULL;

   214

	*group->last_item = item;

   215

	group->last_item = &item->next;

   216

	return item;

   217

}

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   219

/** load an ini file into the "abstract" format */

   220

static IniFile *ini_load(const char *filename)

   221

{

   222

	char buffer[1024], c, *s, *t, *e;

   223

	FILE *in;

   224

	IniFile *ini;

   225

	IniGroup *group = NULL;

   226

	IniItem *item;

   227

   228

	char *comment = NULL;

   229

	uint comment_size = 0;

   230

	uint comment_alloc = 0;

   231

   232

	ini = ini_alloc();

   233

   234

	in = fopen(filename, "r");

   235

	if (in == NULL) return ini;

   236

   237

	/* for each line in the file */

   238

	while (fgets(buffer, sizeof(buffer), in)) {

   239

   240

		/* trim whitespace from the left side */

   241

		for (s = buffer; *s == ' ' || *s == '\t'; s++) {}

   242

   243

		/* trim whitespace from right side. */

   244

		e = s + strlen(s);

   245

		while (e > s && ((c = e[-1]) == '\n' || c == '\r' || c == ' ' || c == '\t')) e--;

   246

		*e = '\0';

   247

   248

		/* skip comments and empty lines */

   249

		if (*s == '#' || *s == ';' || *s == '\0') {

   250

			uint ns = comment_size + (e - s + 1);

   251

			uint a = comment_alloc;

   252

			uint pos;

   253

			/* add to comment */

   254

			if (ns > a) {

   255

				a = max(a, 128U);

   256

				do a *= 2; while (a < ns);

   257

				comment = ReallocT(comment, comment_alloc = a);

   258

			}

   259

			pos = comment_size;

   260

			comment_size += (e - s + 1);

   261

			comment[pos + e - s] = '\n'; // comment newline

   262

			memcpy(comment + pos, s, e - s); // copy comment contents

   263

			continue;

   264

		}

   265

   266

		/* it's a group? */

   267

		if (s[0] == '[') {

   268

			if (e[-1] != ']') {

   269

				ShowInfoF("ini: invalid group name '%s'", buffer);

   270

			} else {

   271

				e--;

   272

			}

   273

			s++; // skip [

   274

			group = ini_group_alloc(ini, s, e - s);

   275

			if (comment_size) {

   276

				group->comment = (char*)pool_strdup(&ini->pool, comment, comment_size);

   277

				comment_size = 0;

   278

			}

   279

		} else if (group) {

   280

			/* find end of keyname */

   281

			if (*s == '\"') {

   282

				s++;

   283

				for (t = s; *t != '\0' && *t != '\"'; t++) {}

   284

				if (*t == '\"') *t = ' ';

   285

			} else {

   286

				for (t = s; *t != '\0' && *t != '=' && *t != '\t' && *t != ' '; t++) {}

   287

			}

   288

   289

			/* it's an item in an existing group */

   290

			item = ini_item_alloc(group, s, t-s);

   291

			if (comment_size) {

   292

				item->comment = (char*)pool_strdup(&ini->pool, comment, comment_size);

   293

				comment_size = 0;

   294

			}

   295

   296

			/* find start of parameter */

   297

			while (*t == '=' || *t == ' ' || *t == '\t') t++;

   298

   299

   300

			/* remove starting quotation marks */

   301

			if (*t == '\"') t++;

   302

			/* remove ending quotation marks */

   303

			e = t + strlen(t);

   304

			if (e > t && e[-1] == '\"') e--;

   305

			*e = '\0';

   306

   307

			item->value = (char*)pool_strdup(&ini->pool, t, e - t);

   308

		} else {

   309

			/* it's an orphan item */

   310

			ShowInfoF("ini: '%s' outside of group", buffer);

   311

		}

   312

	}

   313

   314

	if (comment_size > 0) {

   315

		ini->comment = (char*)pool_strdup(&ini->pool, comment, comment_size);

   316

		comment_size = 0;

   317

	}

   318

   319

	free(comment);

   320

	fclose(in);

   321

   322

	return ini;

   323

}

   324

   325

/** lookup a group or make a new one */

   326

static IniGroup *ini_getgroup(IniFile *ini, const char *name, int len)

   327

{

   328

	IniGroup *group;

   329

   330

	if (len == -1) len = strlen(name);

   331

   332

	/* does it exist already? */

   333

	for (group = ini->group; group; group = group->next)

   334

		if (!memcmp(group->name, name, len) && group->name[len] == 0)

   335

			return group;

   336

   337

	/* otherwise make a new one */

   338

	group = ini_group_alloc(ini, name, len);

   339

	group->comment = (char*)pool_strdup(&ini->pool, "\n", 1);

   340

	return group;

   341

}

   342

   343

/** lookup an item or make a new one */

   344

static IniItem *ini_getitem(IniGroup *group, const char *name, bool create)

   345

{

   346

	IniItem *item;

   347

	uint len = strlen(name);

   348

   349

	for (item = group->item; item; item = item->next)

   350

		if (strcmp(item->name, name) == 0) return item;

   351

   352

	if (!create) return NULL;

   353

   354

	/* otherwise make a new one */

   355

	return ini_item_alloc(group, name, len);

   356

}

   357

   358

/** save ini file from the "abstract" format. */

   359

static bool ini_save(const char *filename, IniFile *ini)

   360

{

   361

	FILE *f;

   362

	IniGroup *group;

   363

	IniItem *item;

   364

   365

	f = fopen(filename, "w");

   366

	if (f == NULL) return false;

   367

   368

	for (group = ini->group; group != NULL; group = group->next) {

   369

		if (group->comment) fputs(group->comment, f);

   370

		fprintf(f, "[%s]\n", group->name);

   371

		for (item = group->item; item != NULL; item = item->next) {

   372

			assert(item->value != NULL);

   373

			if (item->comment != NULL) fputs(item->comment, f);

   374

   375

			/* protect item->name with quotes if needed */

   376

			if (strchr(item->name, ' ') != NULL) {

   377

				fprintf(f, "\"%s\"", item->name);

   378

			} else {

   379

				fprintf(f, "%s", item->name);

   380

			}

   381

   382

			/* Don't give an equal sign to list items that don't have a parameter */

   383

			if (group->type == IGT_LIST && *item->value == '\0') {

   384

				fprintf(f, "\n");

   385

			} else {

   386

				fprintf(f, " = %s\n", item->value);

   387

			}

   388

		}

   389

	}

   390

	if (ini->comment) fputs(ini->comment, f);

   391

   392

	fclose(f);

   393

	return true;

   394

}

   395

   396

static void ini_free(IniFile *ini)

   397

{

   398

	pool_free(&ini->pool);

   399

}

   400

   401

/** Find the index value of a ONEofMANY type in a string seperated by |

   402

 * @param many full domain of values the ONEofMANY setting can have

   403

 * @param one the current value of the setting for which a value needs found

   404

 * @param onelen force calculation of the *one parameter

   405

 * @return the integer index of the full-list, or -1 if not found */

   406

static int lookup_oneofmany(const char *many, const char *one, int onelen)

   407

{

   408

	const char *s;

   409

	int idx;

   410

   411

	if (onelen == -1) onelen = strlen(one);

   412

   413

	/* check if it's an integer */

   414

	if (*one >= '0' && *one <= '9')

   415

		return strtoul(one, NULL, 0);

   416

   417

	idx = 0;

   418

	for (;;) {

   419

		/* find end of item */

   420

		s = many;

   421

		while (*s != '|' && *s != 0) s++;

   422

		if (s - many == onelen && !memcmp(one, many, onelen)) return idx;

   423

		if (*s == 0) return -1;

   424

		many = s + 1;

   425

		idx++;

   426

	}

   427

}

   428

   429

/** Find the set-integer value MANYofMANY type in a string

   430

 * @param many full domain of values the MANYofMANY setting can have

   431

 * @param str the current string value of the setting, each individual

   432

 * of seperated by a whitespace,tab or | character

   433

 * @return the 'fully' set integer, or -1 if a set is not found */

   434

static uint32 lookup_manyofmany(const char *many, const char *str)

   435

{

   436

	const char *s;

   437

	int r;

   438

	uint32 res = 0;

   439

   440

	for (;;) {

   441

		/* skip "whitespace" */

   442

		while (*str == ' ' || *str == '\t' || *str == '|') str++;

   443

		if (*str == 0) break;

   444

   445

		s = str;

   446

		while (*s != 0 && *s != ' ' && *s != '\t' && *s != '|') s++;

   447

   448

		r = lookup_oneofmany(many, str, s - str);

   449

		if (r == -1) return (uint32)-1;

   450

   451

		SetBit(res, r); // value found, set it

   452

		if (*s == 0) break;

   453

		str = s + 1;

   454

	}

   455

	return res;

   456

}

   457

   458

/** Parse an integerlist string and set each found value

   459

 * @param p the string to be parsed. Each element in the list is seperated by a

   460

 * comma or a space character

   461

 * @param items pointer to the integerlist-array that will be filled with values

   462

 * @param maxitems the maximum number of elements the integerlist-array has

   463

 * @return returns the number of items found, or -1 on an error */

   464

static int parse_intlist(const char *p, int *items, int maxitems)

   465

{

   466

	int n = 0, v;

   467

	char *end;

   468

   469

	for (;;) {

   470

		v = strtol(p, &end, 0);

   471

		if (p == end || n == maxitems) return -1;

   472

		p = end;

   473

		items[n++] = v;

   474

		if (*p == '\0') break;

   475

		if (*p != ',' && *p != ' ') return -1;

   476

		p++;

   477

	}

   478

   479

	return n;

   480

}

   481

   482

/** Load parsed string-values into an integer-array (intlist)

   483

 * @param str the string that contains the values (and will be parsed)

   484

 * @param array pointer to the integer-arrays that will be filled

   485

 * @param nelems the number of elements the array holds. Maximum is 64 elements

   486

 * @param type the type of elements the array holds (eg INT8, UINT16, etc.)

   487

 * @return return true on success and false on error */

   488

static bool load_intlist(const char *str, void *array, int nelems, VarType type)

   489

{

   490

	int items[64];

   491

	int i, nitems;

   492

   493

	if (str == NULL) {

   494

		memset(items, 0, sizeof(items));

   495

		nitems = nelems;

   496

	} else {

   497

		nitems = parse_intlist(str, items, lengthof(items));

   498

		if (nitems != nelems) return false;