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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.

    16

 * <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 "gamelog.h"

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#include "station_func.h"

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    66

#include "table/strings.h"

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    68

ClientSettings _settings_client;

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GameSettings _settings_game;

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GameSettings _settings_newgame;

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    72

struct IniFile;

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struct IniItem;

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struct IniGroup;

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struct SettingsMemoryPool;

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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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    93

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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   105

static void pool_init(SettingsMemoryPool **pool)

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{

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	*pool = pool_new(0);

   108

}

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   110

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

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   117

	/* 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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   128

	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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   133

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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   141

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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   152

/** 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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   160

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

   167

};

   168

   169

struct IniFile {

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	SettingsMemoryPool *pool;

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	IniGroup *group, **last_group;

   172

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

   173

};

   174

   175

/** allocate an inifile object */

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static IniFile *ini_alloc()

   177

{

   178

	IniFile *ini;

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	SettingsMemoryPool *pool;

   180

	pool_init(&pool);

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

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	ini->pool = pool;

   183

	ini->group = NULL;

   184

	ini->last_group = &ini->group;

   185

	ini->comment = NULL;

   186

	return ini;

   187

}

   188

   189

/** allocate an ini group object */

   190

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

   191

{

   192

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

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	grp->ini = ini;

   194

	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")) {

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		grp->type = IGT_LIST;

   197

	} else {

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		grp->type = IGT_VARIABLES;

   199

	}

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	grp->next = NULL;

   201

	grp->item = NULL;

   202

	grp->comment = NULL;

   203

	grp->last_item = &grp->item;

   204

	*ini->last_group = grp;

   205

	ini->last_group = &grp->next;

   206

	return grp;

   207

}

   208

   209

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

   210

{

   211

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

   212

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

   213

	item->next = NULL;

   214

	item->comment = NULL;

   215

	item->value = NULL;

   216

	*group->last_item = item;

   217

	group->last_item = &item->next;

   218

	return item;

   219

}

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   221

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

   222

static IniFile *ini_load(const char *filename)

   223

{

   224

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

   225

	FILE *in;

   226

	IniFile *ini;

   227

	IniGroup *group = NULL;

   228

	IniItem *item;

   229

   230

	char *comment = NULL;

   231

	uint comment_size = 0;

   232

	uint comment_alloc = 0;

   233

   234

	ini = ini_alloc();

   235

   236

	in = fopen(filename, "r");

   237

	if (in == NULL) return ini;

   238

   239

	/* for each line in the file */

   240

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

   241

   242

		/* trim whitespace from the left side */

   243

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

   244

   245

		/* trim whitespace from right side. */

   246

		e = s + strlen(s);

   247

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

   248

		*e = '\0';

   249

   250

		/* skip comments and empty lines */

   251

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

   252

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

   253

			uint a = comment_alloc;

   254

			uint pos;

   255

			/* add to comment */

   256

			if (ns > a) {

   257

				a = max(a, 128U);

   258

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

   259

				comment = ReallocT(comment, comment_alloc = a);

   260

			}

   261

			pos = comment_size;

   262

			comment_size += (e - s + 1);

   263

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

   264

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

   265

			continue;

   266

		}

   267

   268

		/* it's a group? */

   269

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

   270

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

   271

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

   272

			} else {

   273

				e--;

   274

			}

   275

			s++; // skip [

   276

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

   277

			if (comment_size) {

   278

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

   279

				comment_size = 0;

   280

			}

   281

		} else if (group) {

   282

			/* find end of keyname */

   283

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

   284

				s++;

   285

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

   286

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

   287

			} else {

   288

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

   289

			}

   290

   291

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

   292

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

   293

			if (comment_size) {

   294

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

   295

				comment_size = 0;

   296

			}

   297

   298

			/* find start of parameter */

   299

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

   300

   301

   302

			/* remove starting quotation marks */

   303

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

   304

			/* remove ending quotation marks */

   305

			e = t + strlen(t);

   306

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

   307

			*e = '\0';

   308

   309

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

   310

		} else {

   311

			/* it's an orphan item */

   312

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

   313

		}

   314

	}

   315

   316

	if (comment_size > 0) {

   317

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

   318

		comment_size = 0;

   319

	}

   320

   321

	free(comment);

   322

	fclose(in);

   323

   324

	return ini;

   325

}

   326

   327

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

   328

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

   329

{

   330

	IniGroup *group;

   331

   332

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

   333

   334

	/* does it exist already? */

   335

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

   336

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

   337

			return group;

   338

		}

   339

	}

   340

   341

	/* otherwise make a new one */

   342

	group = ini_group_alloc(ini, name, len);

   343

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

   344

	return group;

   345

}

   346

   347

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

   348

{

   349

	size_t len = strlen(name);

   350

	IniGroup *prev = NULL;

   351

	IniGroup *group;

   352

   353

	/* does it exist already? */

   354

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

   355

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

   356

			break;

   357

		}

   358

	}

   359

   360

	if (group == NULL) return;

   361

   362

	if (prev != NULL) {

   363

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

   364

	} else {

   365

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

   366

	}

   367

}

   368

   369

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

   370

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

   371

{

   372

	IniItem *item;

   373

	size_t len = strlen(name);

   374

   375

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

   376

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

   377

	}

   378

   379

	if (!create) return NULL;

   380

   381

	/* otherwise make a new one */

   382

	return ini_item_alloc(group, name, len);

   383

}

   384

   385

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

   386

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

   387

{

   388

	FILE *f;

   389

	IniGroup *group;

   390

	IniItem *item;

   391

   392

	f = fopen(filename, "w");

   393

	if (f == NULL) return false;

   394

   395

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

   396

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

   397

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

   398

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

   399

			assert(item->value != NULL);

   400

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

   401

   402

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

   403

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

   404

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

   405

			} else {

   406

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

   407

			}

   408

   409

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

   410

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

   411

				fprintf(f, "\n");

   412

			} else {

   413

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

   414

			}

   415

		}

   416

	}

   417

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

   418

   419

	fclose(f);

   420

	return true;

   421

}

   422

   423

static void ini_free(IniFile *ini)

   424

{

   425

	pool_free(&ini->pool);

   426

}

   427

   428

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

   429

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

   430

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

   431

 * @param onelen force calculation of the *one parameter

   432

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

   433

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

   434

{

   435

	const char *s;

   436

	int idx;

   437

   438

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

   439

   440

	/* check if it's an integer */

   441

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

   442

		return strtoul(one, NULL, 0);

   443

   444

	idx = 0;

   445

	for (;;) {

   446

		/* find end of item */

   447

		s = many;

   448

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

   449

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

   450

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

   451

		many = s + 1;

   452

		idx++;

   453

	}

   454

}

   455

   456

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

   457

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

   458

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

   459

 * of seperated by a whitespace,tab or | character

   460

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

   461

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

   462

{

   463

	const char *s;

   464

	int r;

   465

	uint32 res = 0;

   466

   467

	for (;;) {

   468

		/* skip "whitespace" */

   469

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

   470

		if (*str == 0) break;

   471

   472

		s = str;

   473

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

   474

   475

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

   476

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

   477

   478

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

   479

		if (*s == 0) break;

   480

		str = s + 1;

   481

	}

   482

	return res;

   483

}

   484

   485

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

   486

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

   487

 * comma or a space character

   488

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

   489

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

   490

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

   491

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

   492

{

   493

	int n = 0, v;

   494

	char *end;

   495

   496

	for (;;) {