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/* $Id$ */

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/** @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"

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#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_func.h"

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#include "settings_internal.h"

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#include "command_func.h"

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#include "console_func.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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#include "rev.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 "elrail_func.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 "station_func.h"

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#include "table/strings.h"

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    67

ClientSettings _settings_client;

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GameSettings _settings_game;

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GameSettings _settings_newgame;

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    71

struct IniFile;

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struct IniItem;

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struct IniGroup;

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struct SettingsMemoryPool;

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    76

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, size_t size);

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static void *pool_strdup(SettingsMemoryPool **pool, const char *mem, size_t 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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	size_t pos, size;

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	SettingsMemoryPool *next;

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	byte mem[1];

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};

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static SettingsMemoryPool *pool_new(size_t 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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	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;

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	return p;

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}

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   104

static void pool_init(SettingsMemoryPool **pool)

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{

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	*pool = pool_new(0);

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}

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   109

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

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{

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	size_t pos;

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	SettingsMemoryPool *p = *pool;

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   114

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

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   116

	/* 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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   127

	pos = p->pos;

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	p->pos += size;

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	return p->mem + pos;

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}

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   132

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

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{

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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;

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}

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   140

static void pool_free(SettingsMemoryPool **pool)

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{

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	SettingsMemoryPool *p = *pool, *n;

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	*pool = NULL;

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	while (p) {

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		n = p->next;

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		free(p);

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		p = n;

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	}

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}

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   151

/** structs describing the ini format. */

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struct IniItem {

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	char *name;

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	char *value;

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	char *comment;

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	IniItem *next;

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};

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   159

struct IniGroup {

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	char *name;        ///< name of group

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	char *comment;     ///<comment for group

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	IniItem *item, **last_item;

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	IniGroup *next;

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	IniFile *ini;

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	IniGroupType type; ///< type of group

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};

   167

   168

struct IniFile {

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	SettingsMemoryPool *pool;

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	IniGroup *group, **last_group;

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

   172

};

   173

   174

/** allocate an inifile object */

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static IniFile *ini_alloc()

   176

{

   177

	IniFile *ini;

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	SettingsMemoryPool *pool;

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	pool_init(&pool);

   180

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

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	ini->pool = pool;

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	ini->group = NULL;

   183

	ini->last_group = &ini->group;

   184

	ini->comment = NULL;

   185

	return ini;

   186

}

   187

   188

/** allocate an ini group object */

   189

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

   190

{

   191

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

   192

	grp->ini = ini;

   193

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

   194

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

   195

		grp->type = IGT_LIST;

   196

	} else {

   197

		grp->type = IGT_VARIABLES;

   198

	}

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	grp->next = NULL;

   200

	grp->item = NULL;

   201

	grp->comment = NULL;

   202

	grp->last_item = &grp->item;

   203

	*ini->last_group = grp;

   204

	ini->last_group = &grp->next;

   205

	return grp;

   206

}

   207

   208

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

   209

{

   210

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

   211

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

   212

	item->next = NULL;

   213

	item->comment = NULL;

   214

	item->value = NULL;

   215

	*group->last_item = item;

   216

	group->last_item = &item->next;

   217

	return item;

   218

}

   219

   220

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

   221

static IniFile *ini_load(const char *filename)

   222

{

   223

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

   224

	FILE *in;

   225

	IniFile *ini;

   226

	IniGroup *group = NULL;

   227

	IniItem *item;

   228

   229

	char *comment = NULL;

   230

	uint comment_size = 0;

   231

	uint comment_alloc = 0;

   232

   233

	ini = ini_alloc();

   234

   235

	in = fopen(filename, "r");

   236

	if (in == NULL) return ini;

   237

   238

	/* for each line in the file */

   239

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

   240

   241

		/* trim whitespace from the left side */

   242

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

   243

   244

		/* trim whitespace from right side. */

   245

		e = s + strlen(s);

   246

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

   247

		*e = '\0';

   248

   249

		/* skip comments and empty lines */

   250

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

   251

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

   252

			uint a = comment_alloc;

   253

			uint pos;

   254

			/* add to comment */

   255

			if (ns > a) {

   256

				a = max(a, 128U);

   257

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

   258

				comment = ReallocT(comment, comment_alloc = a);

   259

			}

   260

			pos = comment_size;

   261

			comment_size += (e - s + 1);

   262

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

   263

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

   264

			continue;

   265

		}

   266

   267

		/* it's a group? */

   268

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

   269

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

   270

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

   271

			} else {

   272

				e--;

   273

			}

   274

			s++; // skip [

   275

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

   276

			if (comment_size) {

   277

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

   278

				comment_size = 0;

   279

			}

   280

		} else if (group) {

   281

			/* find end of keyname */

   282

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

   283

				s++;

   284

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

   285

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

   286

			} else {

   287

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

   288

			}

   289

   290

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

   291

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

   292

			if (comment_size) {

   293

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

   294

				comment_size = 0;

   295

			}

   296

   297

			/* find start of parameter */

   298

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

   299

   300

   301

			/* remove starting quotation marks */

   302

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

   303

			/* remove ending quotation marks */

   304

			e = t + strlen(t);

   305

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

   306

			*e = '\0';

   307

   308

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

   309

		} else {

   310

			/* it's an orphan item */

   311

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

   312

		}

   313

	}

   314

   315

	if (comment_size > 0) {

   316

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

   317

		comment_size = 0;

   318

	}

   319

   320

	free(comment);

   321

	fclose(in);

   322

   323

	return ini;

   324

}

   325

   326

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

   327

static IniGroup *ini_getgroup(IniFile *ini, const char *name, size_t len = 0)

   328

{

   329

	IniGroup *group;

   330

   331

	if (len == 0) len = strlen(name);

   332

   333

	/* does it exist already? */

   334

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

   335

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

   336

			return group;

   337

		}

   338

	}

   339

   340

	/* otherwise make a new one */

   341

	group = ini_group_alloc(ini, name, len);

   342

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

   343

	return group;

   344

}

   345

   346

static void ini_removegroup(IniFile *ini, const char *name)

   347

{

   348

	size_t len = strlen(name);

   349

	IniGroup *prev = NULL;

   350

	IniGroup *group;

   351

   352

	/* does it exist already? */

   353

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

   354

		if (memcmp(group->name, name, len) == 0) {

   355

			break;

   356

		}

   357

	}

   358

   359

	if (group == NULL) return;

   360

   361

	if (prev != NULL) {

   362

		prev->next = prev->next->next;

   363

	} else {

   364

		ini->group = ini->group->next;

   365

	}

   366

}

   367

   368

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

   369

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

   370

{

   371

	IniItem *item;

   372

	size_t len = strlen(name);

   373

   374

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

   375

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

   376

	}

   377

   378

	if (!create) return NULL;

   379

   380

	/* otherwise make a new one */

   381

	return ini_item_alloc(group, name, len);

   382

}

   383

   384

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

   385

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

   386

{

   387

	FILE *f;

   388

	IniGroup *group;

   389

	IniItem *item;

   390

   391

	f = fopen(filename, "w");

   392

	if (f == NULL) return false;

   393

   394

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

   395

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

   396

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

   397

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

   398

			assert(item->value != NULL);

   399

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

   400

   401

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

   402

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

   403

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

   404

			} else {

   405

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

   406

			}

   407

   408

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

   409

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

   410

				fprintf(f, "\n");

   411

			} else {

   412

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

   413

			}

   414

		}

   415

	}

   416

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

   417

   418

	fclose(f);

   419

	return true;

   420

}

   421

   422

static void ini_free(IniFile *ini)

   423

{

   424

	pool_free(&ini->pool);

   425

}

   426

   427

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

   428

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

   429

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

   430

 * @param onelen force calculation of the *one parameter

   431

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

   432

static int lookup_oneofmany(const char *many, const char *one, size_t onelen = 0)

   433

{

   434

	const char *s;

   435

	int idx;

   436

   437

	if (onelen == 0) onelen = strlen(one);

   438

   439

	/* check if it's an integer */

   440

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

   441

		return strtoul(one, NULL, 0);

   442

   443

	idx = 0;

   444

	for (;;) {

   445

		/* find end of item */

   446

		s = many;

   447

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

   448

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

   449

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

   450

		many = s + 1;

   451

		idx++;

   452

	}

   453

}

   454

   455

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

   456

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

   457

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

   458

 * of seperated by a whitespace,tab or | character

   459

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

   460

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

   461

{

   462

	const char *s;

   463

	int r;

   464

	uint32 res = 0;

   465

   466

	for (;;) {

   467

		/* skip "whitespace" */

   468

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

   469

		if (*str == 0) break;

   470

   471

		s = str;

   472

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

   473

   474

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

   475

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

   476

   477

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

   478

		if (*s == 0) break;

   479

		str = s + 1;

   480

	}

   481

	return res;

   482

}

   483

   484

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

   485

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

   486

 * comma or a space character

   487

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

   488

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

   489

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

   490

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

   491

{

   492

	int n = 0, v;

   493

	char *end;

   494

   495

	for (;;) {

   496