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#include "stdafx.h"

     2

#include "ttd.h"

     3

#include "sound.h"

     4

#include "network.h"

     5

#include "settings.h"

     6

     7

typedef struct IniFile IniFile;

     8

typedef struct IniItem IniItem;

     9

typedef struct IniGroup IniGroup;

    10

typedef struct MemoryPool MemoryPool;

    11

    12

static void pool_init(MemoryPool **pool);

    13

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

    14

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

    15

static void pool_free(MemoryPool **pool);

    16

    17

struct MemoryPool {

    18

	uint pos,size;

    19

	MemoryPool *next;

    20

	byte mem[1];

    21

};

    22

    23

static MemoryPool *pool_new(uint minsize)

    24

{

    25

	MemoryPool *p;

    26

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

    27

    28

	p = malloc(sizeof(MemoryPool) - 1 + minsize);

    29

	p->pos = 0;

    30

	p->size = minsize;

    31

	p->next = NULL;

    32

	return p;

    33

}

    34

    35

static void pool_init(MemoryPool **pool)

    36

{

    37

	*pool = pool_new(0);

    38

}

    39

    40

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

    41

{

    42

	uint pos;

    43

	MemoryPool *p = *pool;

    44

    45

	size = (size + 3) & ~3; // align everything to a 32 bit boundary

    46

    47

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

    48

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

    49

		p = p->next;

    50

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

    51

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

    52

		MemoryPool *n = pool_new(size);

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		*pool = n;

    54

		n->next = p;

    55

		p = n;

    56

	}

    57

    58

	pos = p->pos;

    59

	p->pos += size;

    60

	return p->mem + pos;

    61

}

    62

    63

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

    64

{

    65

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

    66

	p[size] = 0;

    67

	memcpy(p, mem, size);

    68

	return p;

    69

}

    70

    71

static void pool_free(MemoryPool **pool)

    72

{

    73

	MemoryPool *p = *pool, *n;

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	*pool = NULL;

    75

	while (p) {

    76

		n = p->next;

    77

		free(p);

    78

		p = n;

    79

	}

    80

}

    81

    82

// structs describing the ini format.

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struct IniItem {

    84

	char *name;

    85

	char *value;

    86

	char *comment;

    87

	IniItem *next;

    88

};

    89

    90

struct IniGroup {

    91

	char *name; // name of group

    92

	char *comment; //comment for group

    93

	IniItem *item, **last_item;

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	IniGroup *next;

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	IniFile *ini;

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};

    97

    98

struct IniFile {

    99

	MemoryPool *pool;

   100

	IniGroup *group, **last_group;

   101

	char *comment; // last comment in file

   102

};

   103

   104

// allocate an inifile object

   105

static IniFile *ini_alloc()

   106

{

   107

	IniFile *ini;

   108

	MemoryPool *pool;

   109

	pool_init(&pool);

   110

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

   111

	ini->pool = pool;

   112

	ini->group = NULL;

   113

	ini->last_group = &ini->group;

   114

	ini->comment = NULL;

   115

	return ini;

   116

}

   117

   118

// allocate an ini group object

   119

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

   120

{

   121

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

   122

	grp->ini = ini;

   123

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

   124

	grp->next = NULL;

   125

	grp->item = NULL;

   126

	grp->comment = NULL;

   127

	grp->last_item = &grp->item;

   128

	*ini->last_group = grp;

   129

	ini->last_group = &grp->next;

   130

	return grp;

   131

}

   132

   133

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

   134

{

   135

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

   136

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

   137

	item->next = NULL;

   138

	item->comment = NULL;

   139

	item->value = NULL;

   140

	*group->last_item = item;

   141

	group->last_item = &item->next;

   142

	return item;

   143

}

   144

   145

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

   146

static IniFile *ini_load(const char *filename)

   147

{

   148

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

   149

	FILE *in;

   150

	IniFile *ini;

   151

	IniGroup *group = NULL;

   152

	IniItem *item;

   153

   154

	byte *comment = NULL;

   155

	uint comment_size = 0;

   156

	uint comment_alloc = 0;

   157

   158

	ini = ini_alloc();

   159

   160

	in = fopen(filename, "r");

   161

	if (in == NULL) return ini;

   162

   163

	// for each line in the file

   164

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

   165

   166

		// trim whitespace from the left side

   167

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

   168

   169

		// trim whitespace from right side.

   170

		e = s + strlen(s);

   171

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

   172

		*e = 0;

   173

   174

		// skip comments and empty lines

   175

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

   176

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

   177

			uint a = comment_alloc;

   178

			uint pos;

   179

			// add to comment

   180

			if (ns > a) {

   181

				a = max(a, 128);

   182

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

   183

				comment = realloc(comment, comment_alloc = a);

   184

			}

   185

			pos = comment_size;

   186

			comment_size += (e - s + 1);

   187

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

   188

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

   189

			continue;

   190

		}

   191

   192

		// it's a group?

   193

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

   194

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

   195

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

   196

			else

   197

				e--;

   198

			s++; // skip [

   199

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

   200

			if (comment_size) {

   201

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

   202

				comment_size = 0;

   203

			}

   204

		} else if (group) {

   205

			// find end of keyname

   206

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

   207

   208

			// it's an item in an existing group

   209

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

   210

			if (comment_size) {

   211

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

   212

				comment_size = 0;

   213

			}

   214

   215

			// find start of parameter

   216

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

   217

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

   218

		} else {

   219

			// it's an orphan item

   220

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

   221

		}

   222

	}

   223

   224

	if (comment_size) {

   225

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

   226

		comment_size = 0;

   227

	}

   228

   229

	free(comment);

   230

	fclose(in);

   231

   232

	return ini;

   233

}

   234

   235

// lookup a group or make a new one

   236

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

   237

{

   238

	IniGroup *group;

   239

   240

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

   241

   242

	// does it exist already?

   243

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

   244

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

   245

			return group;

   246

   247

	// otherwise make a new one

   248

	group = ini_group_alloc(ini, name, len);

   249

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

   250

	return group;

   251

}

   252

   253

// lookup an item or make a new one

   254

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

   255

{

   256

	IniItem *item;

   257

	uint len = strlen(name);

   258

   259

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

   260

		if (!strcmp(item->name, name))

   261

			return item;

   262

   263

	if (!create) return NULL;

   264

   265

	// otherwise make a new one

   266

	item = ini_item_alloc(group, name, len);

   267

	return item;

   268

}

   269

   270

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

   271

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

   272

{

   273

	FILE *f;

   274

	IniGroup *group;

   275

	IniItem *item;

   276

   277

	f = fopen(filename, "w");

   278

	if (f == NULL) return false;

   279

   280

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

   281

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

   282

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

   283

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

   284

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

   285

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

   286

		}

   287

	}

   288

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

   289

   290

	fclose(f);

   291

	return true;

   292

}

   293

   294

static void ini_free(IniFile *ini)

   295

{

   296

	pool_free(&ini->pool);

   297

}

   298

   299

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

   300

{

   301

	const char *s;

   302

	int idx;

   303

   304

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

   305

   306

	// check if it's an integer

   307

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

   308

		return strtoul(one, NULL, 0);

   309

   310

	idx = 0;

   311

	for(;;) {

   312

		// find end of item

   313

		s = many;

   314

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

   315

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

   316

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

   317

		many = s + 1;

   318

		idx++;

   319

	}

   320

}

   321

   322

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

   323

{

   324

	const char *s;

   325

	int r;

   326

	uint32 res = 0;

   327

   328

	for(;;) {

   329

		// skip "whitespace"

   330

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

   331

		if (*str == 0) break;

   332

   333

		s = str;

   334

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

   335

   336

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

   337

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

   338

   339

		res |= (1 << r);

   340

		if (*s == 0) break;

   341

		str = s + 1;

   342

	}

   343

	return res;

   344

}

   345

   346

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

   347

{

   348

	int n = 0, v;

   349

	char *end;

   350

   351

	for(;;) {

   352

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

   353

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

   354

		p = end;

   355

		items[n++] = v;

   356

		if (*p == 0) break;

   357

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

   358

		p++;

   359

	}

   360

   361

	return n;

   362

}

   363

   364

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

   365

{

   366

	int items[64];

   367

	int i,nitems;

   368

   369

	if (str == NULL) {

   370

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

   371

		nitems = nelems;

   372

	} else {

   373

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

   374

		if (nitems != nelems)

   375

			return false;

   376

	}

   377

   378

	switch(type) {

   379

	case SDT_INT8 >> 4:

   380

	case SDT_UINT8 >> 4:

   381

		for(i=0; i!=nitems; i++) ((byte*)array)[i] = items[i];

   382

		break;

   383

	case SDT_INT16 >> 4:

   384

	case SDT_UINT16 >> 4:

   385

		for(i=0; i!=nitems; i++) ((uint16*)array)[i] = items[i];

   386

		break;

   387

	case SDT_INT32 >> 4:

   388

	case SDT_UINT32 >> 4:

   389

		for(i=0; i!=nitems; i++) ((uint32*)array)[i] = items[i];

   390

		break;

   391

	default:

   392

		NOT_REACHED();

   393

	}

   394

   395

	return true;

   396

}

   397

   398

static void make_intlist(char *buf, void *array, int nelems, int type)

   399

{

   400

	int i, v = 0;

   401

	byte *p = (byte*)array;

   402

	for(i=0; i!=nelems; i++) {

   403

		switch(type) {

   404

		case SDT_INT8 >> 4: v = *(int8*)p; p += 1; break;

   405

		case SDT_UINT8 >> 4:v = *(byte*)p; p += 1; break;

   406

		case SDT_INT16 >> 4:v = *(int16*)p; p += 2; break;

   407

		case SDT_UINT16 >> 4:v = *(uint16*)p; p += 2; break;

   408

		case SDT_INT32 >> 4:v = *(int32*)p; p += 4; break;

   409

		case SDT_UINT32 >> 4:v = *(uint32*)p; p += 4; break;

   410

		default: NOT_REACHED();

   411

		}

   412

		buf += sprintf(buf, i ? ",%d" : "%d", v);

   413

	}

   414

}

   415

   416

static void make_oneofmany(char *buf, const char *many, int i)

   417

{

   418

	int orig_i = i;

   419

	char c;

   420

   421

	while (--i >= 0) {

   422

		do {

   423

			many++;

   424

			if (many[-1] == 0) {

   425

				sprintf(buf, "%d", orig_i);

   426

				return;

   427

			}

   428

		} while (many[-1] != '|');

   429

	}

   430

   431

	// copy until | or 0

   432

	while ((c=*many++) != 0 && c != '|')

   433

		*buf++ = c;

   434

	*buf = 0;

   435

}

   436

   437

static void make_manyofmany(char *buf, const char *many, uint32 x)

   438

{

   439

	const char *start;

   440

	int i = 0;

   441

	bool init = true;

   442

   443

	do {

   444

		start = many;

   445

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

   446

		if (x & 1) {

   447

			if (!init) *buf++ = '|';

   448

			init = false;

   449

			if (start == many) {

   450

				buf += sprintf(buf, "%d", i);

   451

			} else {

   452

				memcpy(buf, start, many - start);

   453

				buf += many - start;

   454

			}

   455

		}

   456

		if (*many == '|') many++;

   457

	} while (++i, x>>=1);

   458

	*buf = 0;

   459

}

   460

   461

static const void *string_to_val(const SettingDesc *desc, const char *str)

   462

{

   463

	unsigned long val;

   464

	char *end;

   465

   466

	switch(desc->flags & 0xF) {

   467

	case SDT_INTX:

   468

		val = strtol(str, &end, 0);

   469

		if (*end != 0) ShowInfoF("ini: trailing characters at end of setting '%s'", desc->name);

   470

		return (void*)val;

   471

	case SDT_ONEOFMANY: {

   472

		int r = lookup_oneofmany((char*)desc->b, str, -1);

   473

		if (r != -1) return (void*)r;

   474

		ShowInfoF("ini: invalid value '%s' for '%s'", str, desc->name);

   475

		return 0;

   476

	}

   477

	case SDT_MANYOFMANY: {

   478

		uint32 r = lookup_manyofmany(desc->b, str);

   479

		if (r != (uint32)-1) return (void*)r;

   480

		ShowInfoF("ini: invalid value '%s' for '%s'", str, desc->name);

   481

		return 0;

   482

	}

   483

	case SDT_BOOLX:

   484

		if (!strcmp(str, "true") || !strcmp(str, "on") || !strcmp(str, "1"))

   485

			return (void*)true;

   486

		if (!strcmp(str, "false") || !strcmp(str, "off") || !strcmp(str, "0"))

   487

			return (void*)false;

   488

		ShowInfoF("ini: invalid setting value '%s' for '%s'", str, desc->name);

   489

		break;

   490

   491

	case SDT_STRING:

   492

	case SDT_STRINGBUF:

   493

	case SDT_INTLIST:

   494

		return (void*)str;

   495

	}

   496

   497

	return NULL;

   498

}

   499

   500

static void load_setting_desc(IniFile *ini, const SettingDesc *desc, const void *grpname)

   501

{

   502

	IniGroup *group_def = ini_getgroup(ini, grpname, -1), *group;

   503

	IniItem *item;

   504

	const void *p;

   505

	void *ptr;

   506

   507

	for (;desc->name;desc++) {

   508

		// group override?

   509

		const char *s = strchr(desc->name, '.');

   510

		if (s) {

   511

			group = ini_getgroup(ini, desc->name, s - desc->name);

   512

			s++;

   513

		} else {

   514

			s = desc->name;

   515

			group = group_def;

   516

		}

   517

   518

		item = ini_getitem(group, s, false);

   519

		if (!item) {

   520

			p = desc->def;

   521

		} else {

   522

			p = string_to_val(desc, item->value);

   523

		}

   524

   525

		// get ptr to array

   526

		ptr = desc->ptr;