Files @ r3205:d6457bf4d56d
Branch filter:

Location: cpp/openttd-patchpack/source/strings.c

truelight
(svn r3873) -Fix: don't remove Makefile.config if it isn't there in the first place
-Add: allow --debug=3 to enable DEBUG lvl 3 (--debug results in a lvl 1)
   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
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
/* $Id$ */

#include "stdafx.h"
#include "openttd.h"
#include "currency.h"
#include "functions.h"
#include "string.h"
#include "strings.h"
#include "table/strings.h"
#include "namegen.h"
#include "station.h"
#include "town.h"
#include "vehicle.h"
#include "news.h"
#include "screenshot.h"
#include "waypoint.h"
#include "industry.h"
#include "variables.h"

char _userstring[128];

static char *StationGetSpecialString(char *buff, int x);
static char *GetSpecialTownNameString(char *buff, int ind, uint32 seed);
static char *GetSpecialPlayerNameString(char *buff, int ind, const int32 *argv);

static char *FormatString(char *buff, const char *str, const int32 *argv, uint casei);

extern const char _openttd_revision[];

typedef struct LanguagePack {
	uint32 ident;
	uint32 version;			// 32-bits of auto generated version info which is basically a hash of strings.h
	char name[32];			// the international name of this language
	char own_name[32];	// the localized name of this language
	char isocode[16];	// the ISO code for the language (not country code)
	uint16 offsets[32];	// the offsets
	byte plural_form;		// how to compute plural forms
	byte pad[3];				// pad header to be a multiple of 4
	char data[VARARRAY_SIZE];
} LanguagePack;

static char **_langpack_offs;
static LanguagePack *_langpack;
static uint _langtab_num[32]; // Offset into langpack offs
static uint _langtab_start[32]; // Offset into langpack offs

static const StringID _cargo_string_list[NUM_LANDSCAPE][NUM_CARGO] = {
	{ /* LT_NORMAL */
		STR_PASSENGERS,
		STR_TONS,
		STR_BAGS,
		STR_LITERS,
		STR_ITEMS,
		STR_CRATES,
		STR_TONS,
		STR_TONS,
		STR_TONS,
		STR_TONS,
		STR_BAGS,
		STR_RES_OTHER
	},

	{ /* LT_HILLY */
		STR_PASSENGERS,
		STR_TONS,
		STR_BAGS,
		STR_LITERS,
		STR_ITEMS,
		STR_CRATES,
		STR_TONS,
		STR_TONS,
		STR_RES_OTHER,
		STR_TONS,
		STR_BAGS,
		STR_TONS
	},

	{ /* LT_DESERT */
		STR_PASSENGERS,
		STR_LITERS,
		STR_BAGS,
		STR_LITERS,
		STR_TONS,
		STR_CRATES,
		STR_TONS,
		STR_TONS,
		STR_TONS,
		STR_LITERS,
		STR_BAGS,
		STR_TONS
	},

	{ /* LT_CANDY */
		STR_PASSENGERS,
		STR_TONS,
		STR_BAGS,
		STR_NOTHING,
		STR_NOTHING,
		STR_TONS,
		STR_TONS,
		STR_LITERS,
		STR_TONS,
		STR_NOTHING,
		STR_LITERS,
		STR_NOTHING
	}
};


// Read an int64 from the argv array.
static inline int64 GetInt64(const int32 **argv)
{
	int64 result;

	assert(argv);
	result = (uint32)(*argv)[0] + ((uint64)(uint32)(*argv)[1] << 32);
	(*argv)+=2;
	return result;
}

// Read an int32 from the argv array.
static inline int32 GetInt32(const int32 **argv)
{
	assert(argv);
	return *(*argv)++;
}

// Read an array from the argv array.
static inline const int32 *GetArgvPtr(const int32 **argv, int n)
{
	const int32 *result;
	assert(*argv);
	result = *argv;
	(*argv) += n;
	return result;
}


#define NUM_BOUND_STRINGS 8

// Array to hold the bound strings.
static const char *_bound_strings[NUM_BOUND_STRINGS];

// This index is used to implement a "round-robin" allocating of
// slots for BindCString. NUM_BOUND_STRINGS slots are reserved.
// Which means that after NUM_BOUND_STRINGS calls to BindCString,
// the indices will be reused.
static int _bind_index;

static const char *GetStringPtr(StringID string)
{
	return _langpack_offs[_langtab_start[string >> 11] + (string & 0x7FF)];
}

// The highest 8 bits of string contain the "case index".
// These 8 bits will only be set when FormatString wants to print
// the string in a different case. No one else except FormatString
// should set those bits.
char *GetStringWithArgs(char *buffr, uint string, const int32 *argv)
{
	uint index = GB(string,  0, 11);
	uint tab   = GB(string, 11,  5);

	if (GB(string, 0, 16) == 0) error("!invalid string id 0 in GetString");

	switch (tab) {
		case 4:
			if (index >= 0xC0)
				return GetSpecialTownNameString(buffr, index - 0xC0, GetInt32(&argv));
			break;

		case 14:
			if (index >= 0xE4)
				return GetSpecialPlayerNameString(buffr, index - 0xE4, argv);
			break;

		// User defined name
		case 15:
			return GetName(index, buffr);

		case 31:
			// dynamic strings. These are NOT to be passed through the formatter,
			// but passed through verbatim.
			if (index < (STR_SPEC_USERSTRING & 0x7FF)) {
				return strecpy(buffr, _bound_strings[index], NULL);
			}

			return FormatString(buffr, _userstring, NULL, 0);
	}

	if (index >= _langtab_num[tab]) {
		error(
			"!String 0x%X is invalid. "
			"Probably because an old version of the .lng file.\n", string
		);
	}

	return FormatString(buffr, GetStringPtr(GB(string, 0, 16)), argv, GB(string, 24, 8));
}

char *GetString(char *buffr, StringID string)
{
	return GetStringWithArgs(buffr, string, (int32*)_decode_parameters);
}


// This function takes a C-string and allocates a temporary string ID.
// The duration of the bound string is valid only until the next GetString,
// so be careful.
StringID BindCString(const char *str)
{
	int idx = (++_bind_index) & (NUM_BOUND_STRINGS - 1);
	_bound_strings[idx] = str;
	return idx + STR_SPEC_DYNSTRING;
}

// This function is used to "bind" a C string to a OpenTTD dparam slot.
void SetDParamStr(uint n, const char *str)
{
	SetDParam(n, BindCString(str));
}

void InjectDParam(int amount)
{
	memmove(_decode_parameters + amount, _decode_parameters, sizeof(_decode_parameters) - amount * sizeof(uint32));
}

static const uint32 _divisor_table[] = {
	1000000000,
	100000000,
	10000000,
	1000000,

	100000,
	10000,
	1000,
	100,
	10,
	1
};

static char *FormatCommaNumber(char *buff, int32 number)
{
	uint32 quot,divisor;
	int i;
	uint32 tot;
	uint32 num;

	if (number < 0) {
		*buff++ = '-';
		number = -number;
	}

	num = number;

	tot = 0;
	for (i = 0; i != 10; i++) {
		divisor = _divisor_table[i];
		quot = 0;
		if (num >= divisor) {
			quot = num / _divisor_table[i];
			num = num % _divisor_table[i];
		}
		if (tot |= quot || i == 9) {
			*buff++ = '0' + quot;
			if (i == 0 || i == 3 || i == 6) *buff++ = ',';
		}
	}

	*buff = '\0';

	return buff;
}

static char *FormatNoCommaNumber(char *buff, int32 number)
{
	uint32 quot,divisor;
	int i;
	uint32 tot;
	uint32 num;

	if (number < 0) {
		*buff++ = '-';
		number = -number;
	}

	num = number;

	tot = 0;
	for (i = 0; i != 10; i++) {
		divisor = _divisor_table[i];
		quot = 0;
		if (num >= divisor) {
			quot = num / _divisor_table[i];
			num = num % _divisor_table[i];
		}
		if (tot |= quot || i == 9) {
			*buff++ = '0' + quot;
		}
	}

	*buff = '\0';

	return buff;
}


static char *FormatYmdString(char *buff, uint16 number)
{
	const char *src;
	YearMonthDay ymd;

	ConvertDayToYMD(&ymd, number);

	for (src = GetStringPtr(ymd.day + STR_01AC_1ST - 1); (*buff++ = *src++) != '\0';) {}

	buff[-1] = ' ';
	memcpy(buff, GetStringPtr(STR_0162_JAN + ymd.month), 4);
	buff[3] = ' ';

	return FormatNoCommaNumber(buff + 4, ymd.year + MAX_YEAR_BEGIN_REAL);
}

static char *FormatMonthAndYear(char *buff, uint16 number)
{
	const char *src;
	YearMonthDay ymd;

	ConvertDayToYMD(&ymd, number);

	for (src = GetStringPtr(STR_MONTH_JAN + ymd.month); (*buff++ = *src++) != '\0';) {}
	buff[-1] = ' ';

	return FormatNoCommaNumber(buff, ymd.year + MAX_YEAR_BEGIN_REAL);
}

static char *FormatTinyDate(char *buff, uint16 number)
{
	YearMonthDay ymd;

	ConvertDayToYMD(&ymd, number);
	buff += sprintf(buff, " %02i-%02i-%04i", ymd.day, ymd.month + 1, ymd.year + MAX_YEAR_BEGIN_REAL);

	return buff;
}

static char *FormatGenericCurrency(char *buff, const CurrencySpec *spec, int64 number, bool compact)
{
	const char *s;
	char c;
	char buf[40], *p;
	int j;

	// multiply by exchange rate
	number *= spec->rate;

	// convert from negative
	if (number < 0) {
		*buff++ = '-';
		number = -number;
	}

	// add prefix part
	s = spec->prefix;
	while (s != spec->prefix + lengthof(spec->prefix) && (c = *s++) != '\0') *buff++ = c;

	// for huge numbers, compact the number into k or M
	if (compact) {
		compact = 0;
		if (number >= 1000000000) {
			number = (number + 500000) / 1000000;
			compact = 'M';
		} else if (number >= 1000000) {
			number = (number + 500) / 1000;
			compact = 'k';
		}
	}

	// convert to ascii number and add commas
	p = buf;
	j = 4;
	do {
		if (--j == 0) {
			*p++ = spec->separator;
			j = 3;
		}
		*p++ = '0' + number % 10;
	} while (number /= 10);
	do *buff++ = *--p; while (p != buf);

	if (compact) *buff++ = compact;

	// add suffix part
	s = spec->suffix;
	while (s != spec->suffix + lengthof(spec->suffix) && (c = *s++) != '\0') *buff++ = c;

	return buff;
}

static int DeterminePluralForm(int32 n)
{
	// The absolute value determines plurality
	if (n < 0) n = -n;

	switch (_langpack->plural_form) {
	// Two forms, singular used for one only
	// Used in:
	//   Danish, Dutch, English, German, Norwegian, Swedish, Estonian, Finnish,
	//   Greek, Hebrew, Italian, Portuguese, Spanish, Esperanto
	case 0:
	default:
		return n != 1;

	// Only one form
	// Used in:
	//   Hungarian, Japanese, Korean, Turkish
	case 1:
		return 0;

	// Two forms, singular used for zero and one
	// Used in:
	//   French, Brazilian Portuguese
	case 2:
		return n > 1;

	// Three forms, special case for zero
	// Used in:
	//   Latvian
	case 3:
		return n%10==1 && n%100!=11 ? 0 : n != 0 ? 1 : 2;

	// Three forms, special case for one and two
	// Used in:
	//   Gaelige (Irish)
	case 4:
		return n==1 ? 0 : n==2 ? 1 : 2;

	// Three forms, special case for numbers ending in 1[2-9]
	// Used in:
	//   Lithuanian
	case 5:
		return n%10==1 && n%100!=11 ? 0 : n%10>=2 && (n%100<10 || n%100>=20) ? 1 : 2;

	// Three forms, special cases for numbers ending in 1 and 2, 3, 4, except those ending in 1[1-4]
	// Used in:
	//   Croatian, Czech, Russian, Slovak, Ukrainian
	case 6:
		return n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2;

	// Three forms, special case for one and some numbers ending in 2, 3, or 4
	// Used in:
	//   Polish
	case 7:
		return n==1 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2;

	// Four forms, special case for one and all numbers ending in 02, 03, or 04
	// Used in:
	//   Slovenian
	case 8:
		return n%100==1 ? 0 : n%100==2 ? 1 : n%100==3 || n%100==4 ? 2 : 3;
	}
}

static const char *ParseStringChoice(const char *b, uint form, char *dst, int *dstlen)
{
	//<NUM> {Length of each string} {each string}
	uint n = (byte)*b++;
	uint pos,i, mylen=0,mypos=0;

	for (i = pos = 0; i != n; i++) {
		uint len = (byte)*b++;
		if (i == form) {
			mypos = pos;
			mylen = len;
		}
		pos += len;
	}
	*dstlen = mylen;
	memcpy(dst, b + mypos, mylen);
	return b + pos;
}


static char *FormatString(char *buff, const char *str, const int32 *argv, uint casei)
{
	byte b;
	const int32 *argv_orig = argv;
	uint modifier = 0;

	while ((b = *str++) != '\0') {
		switch (b) {
		case 0x1: // {SETX}
			*buff++ = b;
			*buff++ = *str++;
			break;
		case 0x2: // {SETXY}
			*buff++ = b;
			*buff++ = *str++;
			*buff++ = *str++;
			break;

		case 0x81: // {STRINL}
			buff = GetStringWithArgs(buff, ReadLE16Unaligned(str), argv);
			str += 2;
			break;
		case 0x82: // {DATE_LONG}
			buff = FormatYmdString(buff, GetInt32(&argv));
			break;
		case 0x83: // {DATE_SHORT}
			buff = FormatMonthAndYear(buff, GetInt32(&argv));
			break;
		case 0x84: {// {VELOCITY}
			int value = GetInt32(&argv);
			if (_opt_ptr->kilometers) value = value * 1648 >> 10;
			buff = FormatCommaNumber(buff, value);
			if (_opt_ptr->kilometers) {
				memcpy(buff, " km/h", 5);
				buff += 5;
			} else {
				memcpy(buff, " mph", 4);
				buff += 4;
			}
			break;
		}
		// 0x85 is used as escape character..
		case 0x85:
			switch (*str++) {
			case 0: /* {CURRCOMPACT} */
				buff = FormatGenericCurrency(buff, _currency, GetInt32(&argv), true);
				break;
			case 2: /* {REV} */
				buff = strecpy(buff, _openttd_revision, NULL);
				break;
			case 3: { /* {SHORTCARGO} */
				// Short description of cargotypes. Layout:
				// 8-bit = cargo type
				// 16-bit = cargo count
				StringID cargo_str = _cargo_string_list[_opt_ptr->landscape][GetInt32(&argv)];
				uint16 multiplier = (cargo_str == STR_LITERS) ? 1000 : 1;
				// liquid type of cargo is multiplied by 100 to get correct amount
				buff = FormatCommaNumber(buff, GetInt32(&argv) * multiplier);
				buff = strecpy(buff, " ", NULL);
				buff = strecpy(buff, GetStringPtr(cargo_str), NULL);
			} break;
			case 4: {/* {CURRCOMPACT64} */
				// 64 bit compact currency-unit
				buff = FormatGenericCurrency(buff, _currency, GetInt64(&argv), true);
				break;
			}
			case 5: { /* {STRING1} */
				// String that consumes ONE argument
				uint str = modifier + GetInt32(&argv);
				buff = GetStringWithArgs(buff, str, GetArgvPtr(&argv, 1));
				modifier = 0;
				break;
			}
			case 6: { /* {STRING2} */
				// String that consumes TWO arguments
				uint str = modifier + GetInt32(&argv);
				buff = GetStringWithArgs(buff, str, GetArgvPtr(&argv, 2));
				modifier = 0;
				break;
			}
			case 7: { /* {STRING3} */
				// String that consumes THREE arguments
				uint str = modifier + GetInt32(&argv);
				buff = GetStringWithArgs(buff, str, GetArgvPtr(&argv, 3));
				modifier = 0;
				break;
			}
			case 8: { /* {STRING4} */
				// String that consumes FOUR arguments
				uint str = modifier + GetInt32(&argv);
				buff = GetStringWithArgs(buff, str, GetArgvPtr(&argv, 4));
				modifier = 0;
				break;
			}
			case 9: { /* {STRING5} */
				// String that consumes FIVE arguments
				uint str = modifier + GetInt32(&argv);
				buff = GetStringWithArgs(buff, str, GetArgvPtr(&argv, 5));
				modifier = 0;
				break;
			}

			case 10: { /* {STATIONFEATURES} */
				buff = StationGetSpecialString(buff, GetInt32(&argv));
				break;
			}

			case 11: { /* {INDUSTRY} */
				const Industry* i = GetIndustry(GetInt32(&argv));
				int32 args[2];

				// industry not valid anymore?
				if (i->xy == 0) break;

				// First print the town name and the industry type name
				// The string STR_INDUSTRY_PATTERN controls the formatting
				args[0] = i->town->index;
				args[1] = i->type + STR_4802_COAL_MINE;
				buff = FormatString(buff, GetStringPtr(STR_INDUSTRY_FORMAT), args, modifier >> 24);
				modifier = 0;
				break;
			}

			case 12: { // {VOLUME}
				buff = FormatCommaNumber(buff, GetInt32(&argv) * 1000);
				buff = strecpy(buff, " ", NULL);
				buff = FormatString(buff, GetStringPtr(STR_LITERS), NULL, modifier >> 24);
				modifier = 0;
				break;
			}

			case 13: { // {G 0 Der Die Das}
				const byte* s = (const byte*)GetStringPtr(argv_orig[(byte)*str++]); // contains the string that determines gender.
				int len;
				int gender = 0;
				if (s != NULL && s[0] == 0x87) gender = s[1];
				str = ParseStringChoice(str, gender, buff, &len);
				buff += len;
				break;
			}

			case 14: { // {DATE_TINY}
				buff = FormatTinyDate(buff, GetInt32(&argv));
				break;
			}

			case 15: { // {CARGO}
				// Layout now is:
				//   8bit   - cargo type
				//   16-bit - cargo count
				StringID cargo_str = _cargoc.names_long[GetInt32(&argv)];
				buff = GetStringWithArgs(buff, cargo_str, argv++);
				break;
			}

			default:
				error("!invalid escape sequence in string");
			}
			break;

		case 0x86: // {SKIP}
			argv++;
			break;

		// This sets up the gender for the string.
		// We just ignore this one. It's used in {G 0 Der Die Das} to determine the case.
		case 0x87: // {GENDER 0}
			str++;
			break;

		case 0x88: {// {STRING}
			uint str = modifier + GetInt32(&argv);
			// WARNING. It's prohibited for the included string to consume any arguments.
			// For included strings that consume argument, you should use STRING1, STRING2 etc.
			// To debug stuff you can set argv to NULL and it will tell you
			buff = GetStringWithArgs(buff, str, argv);
			modifier = 0;
			break;
		}

		case 0x8B: // {COMMA}
			buff = FormatCommaNumber(buff, GetInt32(&argv));
			break;

		case 0x8C: // Move argument pointer
			argv = argv_orig + (byte)*str++;
			break;

		case 0x8D: { // {P}
			int32 v = argv_orig[(byte)*str++]; // contains the number that determines plural
			int len;
			str = ParseStringChoice(str, DeterminePluralForm(v), buff, &len);
			buff += len;
			break;
		}

		case 0x8E: // {NUM}
			buff = FormatNoCommaNumber(buff, GetInt32(&argv));
			break;

		case 0x8F: // {CURRENCY}
			buff = FormatGenericCurrency(buff, _currency, GetInt32(&argv), false);
			break;

		case 0x99: { // {WAYPOINT}
			int32 temp[2];
			Waypoint *wp = GetWaypoint(GetInt32(&argv));
			StringID str;
			if (wp->string != STR_NULL) {
				str = wp->string;
			} else {
				temp[0] = wp->town_index;
				temp[1] = wp->town_cn + 1;
				str = wp->town_cn == 0 ? STR_WAYPOINTNAME_CITY : STR_WAYPOINTNAME_CITY_SERIAL;
			}
			buff = GetStringWithArgs(buff, str, temp);
		} break;

		case 0x9A: { // {STATION}
			const Station* st = GetStation(GetInt32(&argv));
			int32 temp[2];

			if (st->xy == 0) { // station doesn't exist anymore
				buff = GetStringWithArgs(buff, STR_UNKNOWN_DESTINATION, NULL);
				break;
			}
			temp[0] = st->town->townnametype;
			temp[1] = st->town->townnameparts;
			buff = GetStringWithArgs(buff, st->string_id, temp);
			break;
		}
		case 0x9B: { // {TOWN}
			const Town* t = GetTown(GetInt32(&argv));
			int32 temp[1];

			assert(t->xy != 0);

			temp[0] = t->townnameparts;
			buff = GetStringWithArgs(buff, t->townnametype, temp);
			break;
		}

		case 0x9C: { // {CURRENCY64}
			buff = FormatGenericCurrency(buff, _currency, GetInt64(&argv), false);
			break;
		}

		case 0x9D: { // {SETCASE}
			// This is a pseudo command, it's outputted when someone does {STRING.ack}
			// The modifier is added to all subsequent GetStringWithArgs that accept the modifier.
			modifier = (byte)*str++ << 24;
			break;
		}

		case 0x9E: { // {Used to implement case switching}
			// <0x9E> <NUM CASES> <CASE1> <LEN1> <STRING1> <CASE2> <LEN2> <STRING2> <CASE3> <LEN3> <STRING3> <STRINGDEFAULT>
			// Each LEN is printed using 2 bytes in big endian order.
			uint num = (byte)*str++;
			while (num) {
				if ((byte)str[0] == casei) {
					// Found the case, adjust str pointer and continue
					str += 3;
					break;
				}
				// Otherwise skip to the next case
				str += 3 + (str[1] << 8) + str[2];
				num--;
			}
			break;
		}

		default:
			*buff++ = b;
		}
	}
	*buff = '\0';
	return buff;
}


static char *StationGetSpecialString(char *buff, int x)
{
	if (x & 0x01) *buff++ = '\x94';
	if (x & 0x02) *buff++ = '\x95';
	if (x & 0x04) *buff++ = '\x96';
	if (x & 0x08) *buff++ = '\x97';
	if (x & 0x10) *buff++ = '\x98';
	*buff = '\0';
	return buff;
}

static char *GetSpecialTownNameString(char *buff, int ind, uint32 seed)
{
	_town_name_generators[ind](buff, seed);

	while (*buff != '\0') buff++;
	return buff;
}

static const char* const _silly_company_names[] = {
	"Bloggs Brothers",
	"Tiny Transport Ltd.",
	"Express Travel",
	"Comfy-Coach & Co.",
	"Crush & Bump Ltd.",
	"Broken & Late Ltd.",
	"Sam Speedy & Son",
	"Supersonic Travel",
	"Mike's Motors",
	"Lightning International",
	"Pannik & Loozit Ltd.",
	"Inter-City Transport",
	"Getout & Pushit Ltd."
};

static const char* const _surname_list[] = {
	"Adams",
	"Allan",
	"Baker",
	"Bigwig",
	"Black",
	"Bloggs",
	"Brown",
	"Campbell",
	"Gordon",
	"Hamilton",
	"Hawthorn",
	"Higgins",
	"Green",
	"Gribble",
	"Jones",
	"McAlpine",
	"MacDonald",
	"McIntosh",
	"Muir",
	"Murphy",
	"Nelson",
	"O'Donnell",
	"Parker",
	"Phillips",
	"Pilkington",
	"Quigley",
	"Sharkey",
	"Thomson",
	"Watkins"
};

static const char* const _silly_surname_list[] = {
	"Grumpy",
	"Dozy",
	"Speedy",
	"Nosey",
	"Dribble",
	"Mushroom",
	"Cabbage",
	"Sniffle",
	"Fishy",
	"Swindle",
	"Sneaky",
	"Nutkins"
};

static const char _initial_name_letters[] = {
	'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J',
	'K', 'L', 'M', 'N', 'P', 'R', 'S', 'T', 'W',
};

static char *GenAndCoName(char *buff, uint32 arg)
{
	const char* const* base;
	uint num;

	if (_opt_ptr->landscape == LT_CANDY) {
		base = _silly_surname_list;
		num  = lengthof(_silly_surname_list);
	} else {
		base = _surname_list;
		num  = lengthof(_surname_list);
	}

	buff = strecpy(buff, base[num * GB(arg, 16, 8) >> 8], NULL);
	buff = strecpy(buff, " & Co.", NULL);

	return buff;
}

static char *GenPresidentName(char *buff, uint32 x)
{
	const char* const* base;
	uint num;
	uint i;

	buff[0] = _initial_name_letters[sizeof(_initial_name_letters) * GB(x, 0, 8) >> 8];
	buff[1] = '.';
	buff[2] = ' '; // Insert a space after initial and period "I. Firstname" instead of "I.Firstname"
	buff += 3;

	i = (sizeof(_initial_name_letters) + 35) * GB(x, 8, 8) >> 8;
	if (i < sizeof(_initial_name_letters)) {
		buff[0] = _initial_name_letters[i];
		buff[1] = '.';
		buff[2] = ' '; // Insert a space after initial and period "I. J. Firstname" instead of "I.J.Firstname"
		buff += 3;
	}

	if (_opt_ptr->landscape == LT_CANDY) {
		base = _silly_surname_list;
		num  = lengthof(_silly_surname_list);
	} else {
		base = _surname_list;
		num  = lengthof(_surname_list);
	}

	buff = strecpy(buff, base[num * GB(x, 16, 8) >> 8], NULL);

	return buff;
}

static const char * const _song_names[] = {
	"Tycoon DELUXE Theme",
	"Easy Driver",
	"Little Red Diesel",
	"Cruise Control",
	"Don't Walk!",
	"Fell Apart On Me",
	"City Groove",
	"Funk Central",
	"Stoke It",
	"Road Hog",
	"Aliens Ate My Railway",
	"Snarl Up",
	"Stroll On",
	"Can't Get There From Here",
	"Sawyer's Tune",
	"Hold That Train!",
	"Movin' On",
	"Goss Groove",
	"Small Town",
	"Broomer's Oil Rag",
	"Jammit",
	"Hard Drivin'"
};

static char *GetSpecialPlayerNameString(char *buff, int ind, const int32 *argv)
{
	switch (ind) {
		case 1: // not used
			return strecpy(buff, _silly_company_names[GetInt32(&argv) & 0xFFFF], NULL);

		case 2: // used for Foobar & Co company names
			return GenAndCoName(buff, GetInt32(&argv));

		case 3: // President name
			return GenPresidentName(buff, GetInt32(&argv));

		case 4: // song names
			return strecpy(buff, _song_names[GetInt32(&argv) - 1], NULL);
	}

	// town name?
	if (IS_INT_INSIDE(ind - 6, 0, SPECSTR_TOWNNAME_LAST-SPECSTR_TOWNNAME_START + 1)) {
		buff = GetSpecialTownNameString(buff, ind - 6, GetInt32(&argv));
		return strecpy(buff, " Transport", NULL);
	}

	// language name?
	if (IS_INT_INSIDE(ind, (SPECSTR_LANGUAGE_START - 0x70E4), (SPECSTR_LANGUAGE_END - 0x70E4) + 1)) {
		int i = ind - (SPECSTR_LANGUAGE_START - 0x70E4);
		return strecpy(buff,
			i == _dynlang.curr ? _langpack->own_name : _dynlang.ent[i].name, NULL);
	}

	// resolution size?
	if (IS_INT_INSIDE(ind, (SPECSTR_RESOLUTION_START - 0x70E4), (SPECSTR_RESOLUTION_END - 0x70E4) + 1)) {
		int i = ind - (SPECSTR_RESOLUTION_START - 0x70E4);
		return buff + sprintf(buff, "%dx%d", _resolutions[i][0], _resolutions[i][1]);
	}

	// screenshot format name?
	if (IS_INT_INSIDE(ind, (SPECSTR_SCREENSHOT_START - 0x70E4), (SPECSTR_SCREENSHOT_END - 0x70E4) + 1)) {
		int i = ind - (SPECSTR_SCREENSHOT_START - 0x70E4);
		return strecpy(buff, GetScreenshotFormatDesc(i), NULL);
	}

	assert(0);
	return NULL;
}

// remap a string ID from the old format to the new format
StringID RemapOldStringID(StringID s)
{
	switch (s) {
		case 0x0006: return STR_SV_EMPTY;
		case 0x7000: return STR_SV_UNNAMED;
		case 0x70E4: return SPECSTR_PLAYERNAME_ENGLISH;
		case 0x70E9: return SPECSTR_PLAYERNAME_ENGLISH;
		case 0x8864: return STR_SV_TRAIN_NAME;
		case 0x902B: return STR_SV_ROADVEH_NAME;
		case 0x9830: return STR_SV_SHIP_NAME;
		case 0xA02F: return STR_SV_AIRCRAFT_NAME;

		default:
			if (IS_INT_INSIDE(s, 0x300F, 0x3030)) {
				return s - 0x300F + STR_SV_STNAME;
			} else {
				return s;
			}
	}
}

bool ReadLanguagePack(int lang_index)
{
	int tot_count, i;
	LanguagePack *lang_pack;
	size_t len;
	char **langpack_offs;
	char *s;

	{
		char *lang = str_fmt("%s%s", _path.lang_dir, _dynlang.ent[lang_index].file);
		lang_pack = ReadFileToMem(lang, &len, 100000);
		free(lang);
	}
	if (lang_pack == NULL) return false;
	if (len < sizeof(LanguagePack) ||
			lang_pack->ident != TO_LE32(LANGUAGE_PACK_IDENT) ||
			lang_pack->version != TO_LE32(LANGUAGE_PACK_VERSION)) {
		free(lang_pack);
		return false;
	}

#if defined(TTD_BIG_ENDIAN)
	for (i = 0; i != 32; i++) {
		lang_pack->offsets[i] = ReadLE16Aligned(&lang_pack->offsets[i]);
	}
#endif

	tot_count = 0;
	for (i = 0; i != 32; i++) {
		uint num = lang_pack->offsets[i];
		_langtab_start[i] = tot_count;
		_langtab_num[i] = num;
		tot_count += num;
	}

	// Allocate offsets
	langpack_offs = malloc(tot_count * sizeof(*langpack_offs));

	// Fill offsets
	s = lang_pack->data;
	for (i = 0; i != tot_count; i++) {
		len = (byte)*s;
		*s++ = '\0'; // zero terminate the string before.
		if (len >= 0xC0) len = ((len & 0x3F) << 8) + (byte)*s++;
		langpack_offs[i] = s;
		s += len;
	}

	free(_langpack);
	_langpack = lang_pack;

	free(_langpack_offs);
	_langpack_offs = langpack_offs;

	ttd_strlcpy(_dynlang.curr_file, _dynlang.ent[lang_index].file, sizeof(_dynlang.curr_file));

	_dynlang.curr = lang_index;
	return true;
}

// make a list of the available language packs. put the data in _dynlang struct.
void InitializeLanguagePacks(void)
{
	DynamicLanguages *dl = &_dynlang;
	int i;
	int n;
	int m;
	int def;
	int fallback;
	LanguagePack hdr;
	FILE *in;
	char *files[32];
	uint j;

	char lang[] = "en";
	static const char* env[] = {
		"LANGUAGE",
		"LC_ALL",
		"LC_MESSAGES",
		"LANG"
	};

	for (j = 0; j < lengthof(env); j++) {
		const char* envlang = getenv(env[j]);
		if (envlang != NULL) {
			snprintf(lang, lengthof(lang), "%.2s", envlang);
			break;
		}
	}

	n = GetLanguageList(files, lengthof(files));

	def = -1;
	fallback = 0;

	// go through the language files and make sure that they are valid.
	for (i = m = 0; i != n; i++) {
		int j;

		char *s = str_fmt("%s%s", _path.lang_dir, files[i]);
		in = fopen(s, "rb");
		free(s);
		if (in == NULL ||
				(j = fread(&hdr, sizeof(hdr), 1, in), fclose(in), j) != 1 ||
				hdr.ident != TO_LE32(LANGUAGE_PACK_IDENT) ||
				hdr.version != TO_LE32(LANGUAGE_PACK_VERSION)) {
			free(files[i]);
			continue;
		}

		dl->ent[m].file = files[i];
		dl->ent[m].name = strdup(hdr.name);

		if (strcmp(hdr.name, "English") == 0) fallback = m;
		if (strcmp(hdr.isocode, lang) == 0) def = m;

		m++;
	}
	if (def == -1) def = fallback;

	if (m == 0)
		error(n == 0 ? "No available language packs" : "Invalid version of language packs");

	dl->num = m;
	for (i = 0; i != dl->num; i++) dl->dropdown[i] = SPECSTR_LANGUAGE_START + i;
	dl->dropdown[i] = INVALID_STRING_ID;

	for (i = 0; i != dl->num; i++)
		if (strcmp(dl->ent[i].file, dl->curr_file) == 0) {
			def = i;
			break;
		}

	if (!ReadLanguagePack(def))
		error("can't read language pack '%s'", dl->ent[def].file);
}