summaryrefslogtreecommitdiff
path: root/src/win32.cpp
blob: 4c33bfbd489bdd1d7c2532ab8533a1a304146d70 (plain)
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
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
/* $Id$ */

/** @file win32.cpp Implementation of MS Windows system calls */

#include "stdafx.h"
#include "openttd.h"
#include "debug.h"
#include "saveload.h"
#include "gfx_func.h"
#include "textbuf_gui.h"
#include "fileio_func.h"
#include "fios.h"
#include "rev.h"
#include <windows.h>
#include <winnt.h>
#include <wininet.h>
#include <io.h>
#include <fcntl.h>
#include <shlobj.h> // SHGetFolderPath
#include "variables.h"
#include "win32.h"
#include "core/alloc_func.hpp"
#include "functions.h"
#include "core/random_func.hpp"
#include "core/bitmath_func.hpp"
#include "string_func.h"
#include "gamelog.h"
#include <ctype.h>
#include <tchar.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#if defined(_MSC_VER) && !defined(WINCE)
	#include <dbghelp.h>
	#include "strings_func.h"
#endif

static bool _has_console;

static bool cursor_visible = true;

bool MyShowCursor(bool show)
{
	if (cursor_visible == show) return show;

	cursor_visible = show;
	ShowCursor(show);

	return !show;
}

/** Helper function needed by dynamically loading libraries
 * XXX: Hurray for MS only having an ANSI GetProcAddress function
 * on normal windows and no Wide version except for in Windows Mobile/CE */
bool LoadLibraryList(Function proc[], const char *dll)
{
	while (*dll != '\0') {
		HMODULE lib;
		lib = LoadLibrary(MB_TO_WIDE(dll));

		if (lib == NULL) return false;
		for (;;) {
			FARPROC p;

			while (*dll++ != '\0') { /* Nothing */ }
			if (*dll == '\0') break;
#if defined(WINCE)
			p = GetProcAddress(lib, MB_TO_WIDE(dll));
#else
			p = GetProcAddress(lib, dll);
#endif
			if (p == NULL) return false;
			*proc++ = (Function)p;
		}
		dll++;
	}
	return true;
}

#ifdef _MSC_VER
static const char *_exception_string = NULL;
void SetExceptionString(const char *s, ...)
{
	va_list va;
	char buf[512];

	va_start(va, s);
	vsnprintf(buf, lengthof(buf), s, va);
	va_end(va);

	_exception_string = strdup(buf);
}
#endif

void ShowOSErrorBox(const char *buf, bool system)
{
	MyShowCursor(true);
	MessageBox(GetActiveWindow(), MB_TO_WIDE(buf), _T("Error!"), MB_ICONSTOP);

/* if exception tracker is enabled, we crash here to let the exception handler handle it. */
#if defined(WIN32_EXCEPTION_TRACKER) && !defined(_DEBUG)
	if (system) {
		_exception_string = buf;
		*(byte*)0 = 0;
	}
#endif
}

#if defined(_MSC_VER) && !defined(WINCE)

static void *_safe_esp;
static char *_crash_msg;
static bool _expanded;
static bool _did_emerg_save;
static int _ident;

struct DebugFileInfo {
	uint32 size;
	uint32 crc32;
	SYSTEMTIME file_time;
};

static uint32 *_crc_table;

static void MakeCRCTable(uint32 *table)
{
	uint32 crc, poly = 0xEDB88320L;
	int i;
	int j;

	_crc_table = table;

	for (i = 0; i != 256; i++) {
		crc = i;
		for (j = 8; j != 0; j--) {
			crc = (crc & 1 ? (crc >> 1) ^ poly : crc >> 1);
		}
		table[i] = crc;
	}
}

static uint32 CalcCRC(byte *data, uint size, uint32 crc)
{
	for (; size > 0; size--) {
		crc = ((crc >> 8) & 0x00FFFFFF) ^ _crc_table[(crc ^ *data++) & 0xFF];
	}
	return crc;
}

static void GetFileInfo(DebugFileInfo *dfi, const TCHAR *filename)
{
	HANDLE file;
	memset(dfi, 0, sizeof(dfi));

	file = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, 0);
	if (file != INVALID_HANDLE_VALUE) {
		byte buffer[1024];
		DWORD numread;
		uint32 filesize = 0;
		FILETIME write_time;
		uint32 crc = (uint32)-1;

		for (;;) {
			if (ReadFile(file, buffer, sizeof(buffer), &numread, NULL) == 0 || numread == 0)
				break;
			filesize += numread;
			crc = CalcCRC(buffer, numread, crc);
		}
		dfi->size = filesize;
		dfi->crc32 = crc ^ (uint32)-1;

		if (GetFileTime(file, NULL, NULL, &write_time)) {
			FileTimeToSystemTime(&write_time, &dfi->file_time);
		}
		CloseHandle(file);
	}
}


static char *PrintModuleInfo(char *output, HMODULE mod)
{
	TCHAR buffer[MAX_PATH];
	DebugFileInfo dfi;

	GetModuleFileName(mod, buffer, MAX_PATH);
	GetFileInfo(&dfi, buffer);
	output += sprintf(output, " %-20s handle: %p size: %d crc: %.8X date: %d-%.2d-%.2d %.2d:%.2d:%.2d\r\n",
		WIDE_TO_MB(buffer),
		mod,
		dfi.size,
		dfi.crc32,
		dfi.file_time.wYear,
		dfi.file_time.wMonth,
		dfi.file_time.wDay,
		dfi.file_time.wHour,
		dfi.file_time.wMinute,
		dfi.file_time.wSecond
	);
	return output;
}

static char *PrintModuleList(char *output)
{
	BOOL (WINAPI *EnumProcessModules)(HANDLE, HMODULE*, DWORD, LPDWORD);

	if (LoadLibraryList((Function*)&EnumProcessModules, "psapi.dll\0EnumProcessModules\0\0")) {
		HMODULE modules[100];
		DWORD needed;
		BOOL res;

		HANDLE proc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, GetCurrentProcessId());
		if (proc != NULL) {
			res = EnumProcessModules(proc, modules, sizeof(modules), &needed);
			CloseHandle(proc);
			if (res) {
				size_t count = min(needed / sizeof(HMODULE), lengthof(modules));

				for (size_t i = 0; i != count; i++) output = PrintModuleInfo(output, modules[i]);
				return output;
			}
		}
	}
	output = PrintModuleInfo(output, NULL);
	return output;
}

static const TCHAR _crash_desc[] =
	_T("A serious fault condition occured in the game. The game will shut down.\n")
	_T("Please send the crash information and the crash.dmp file (if any) to the developers.\n")
	_T("This will greatly help debugging. The correct place to do this is http://bugs.openttd.org. ")
	_T("The information contained in the report is displayed below.\n")
	_T("Press \"Emergency save\" to attempt saving the game.");

static const TCHAR _save_succeeded[] =
	_T("Emergency save succeeded.\n")
	_T("Be aware that critical parts of the internal game state may have become ")
	_T("corrupted. The saved game is not guaranteed to work.");

static bool EmergencySave()
{
	SaveOrLoad("crash.sav", SL_SAVE, BASE_DIR);
	return true;
}

/* Disable the crash-save submit code as it's not used */
#if 0

struct WinInetProcs {
	HINTERNET (WINAPI *InternetOpen)(LPCTSTR, DWORD, LPCTSTR, LPCTSTR, DWORD);
	HINTERNET (WINAPI *InternetConnect)(HINTERNET, LPCTSTR, INTERNET_PORT, LPCTSTR, LPCTSTR, DWORD, DWORD, DWORD);
	HINTERNET (WINAPI *HttpOpenRequest)(HINTERNET, LPCTSTR, LPCTSTR, LPCTSTR, LPCTSTR, LPCTSTR *, DWORD, DWORD);
	BOOL (WINAPI *HttpSendRequest)(HINTERNET, LPCTSTR, DWORD, LPVOID, DWORD);
	BOOL (WINAPI *InternetCloseHandle)(HINTERNET);
	BOOL (WINAPI *HttpQueryInfo)(HINTERNET, DWORD, LPVOID, LPDWORD, LPDWORD);
};

#define M(x) x "\0"
#if defined(UNICODE)
# define W(x) x "W"
#else
# define W(x) x "A"
#endif
static const char wininet_files[] =
	M("wininet.dll")
	M(W("InternetOpen"))
	M(W("InternetConnect"))
	M(W("HttpOpenRequest"))
	M(W("HttpSendRequest"))
	M("InternetCloseHandle")
	M(W("HttpQueryInfo"))
	M("");
#undef W
#undef M

static WinInetProcs _wininet;

static const TCHAR *SubmitCrashReport(HWND wnd, void *msg, size_t msglen, const TCHAR *arg)
{
	HINTERNET inet, conn, http;
	const TCHAR *err = NULL;
	DWORD code, len;
	static TCHAR buf[100];
	TCHAR buff[100];

	if (_wininet.InternetOpen == NULL && !LoadLibraryList((Function*)&_wininet, wininet_files)) return _T("can't load wininet.dll");

	inet = _wininet.InternetOpen(_T("OTTD"), INTERNET_OPEN_TYPE_PRECONFIG, NULL, NULL, 0 );
	if (inet == NULL) { err = _T("internetopen failed"); goto error1; }

	conn = _wininet.InternetConnect(inet, _T("www.openttd.org"), INTERNET_DEFAULT_HTTP_PORT, _T(""), _T(""), INTERNET_SERVICE_HTTP, 0, 0);
	if (conn == NULL) { err = _T("internetconnect failed"); goto error2; }

	_sntprintf(buff, lengthof(buff), _T("/crash.php?file=%s&ident=%d"), arg, _ident);

	http = _wininet.HttpOpenRequest(conn, _T("POST"), buff, NULL, NULL, NULL, INTERNET_FLAG_NO_CACHE_WRITE , 0);
	if (http == NULL) { err = _T("httpopenrequest failed"); goto error3; }

	if (!_wininet.HttpSendRequest(http, _T("Content-type: application/binary"), -1, msg, (DWORD)msglen)) { err = _T("httpsendrequest failed"); goto error4; }

	len = sizeof(code);
	if (!_wininet.HttpQueryInfo(http, HTTP_QUERY_STATUS_CODE | HTTP_QUERY_FLAG_NUMBER, &code, &len, 0)) { err = _T("httpqueryinfo failed"); goto error4; }

	if (code != 200) {
		int l = _sntprintf(buf, lengthof(buf), _T("Server said: %d "), code);
		len = sizeof(buf) - l;
		_wininet.HttpQueryInfo(http, HTTP_QUERY_STATUS_TEXT, buf + l, &len, 0);
		err = buf;
	}

error4:
	_wininet.InternetCloseHandle(http);
error3:
	_wininet.InternetCloseHandle(conn);
error2:
	_wininet.InternetCloseHandle(inet);
error1:
	return err;
}

static void SubmitFile(HWND wnd, const TCHAR *file)
{
	HANDLE h;
	unsigned long size;
	unsigned long read;
	void *mem;

	h = CreateFile(file, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, 0, NULL);
	if (h == NULL) return;

	size = GetFileSize(h, NULL);
	if (size > 500000) goto error1;

	mem = MallocT<byte>(size);
	if (mem == NULL) goto error1;

	if (!ReadFile(h, mem, size, &read, NULL) || read != size) goto error2;

	SubmitCrashReport(wnd, mem, size, file);

error2:
	free(mem);
error1:
	CloseHandle(h);
}

#endif /* Disabled crash-submit procedures */

static const TCHAR * const _expand_texts[] = {_T("S&how report >>"), _T("&Hide report <<") };

static void SetWndSize(HWND wnd, int mode)
{
	RECT r, r2;
	int offs;

	GetWindowRect(wnd, &r);

	SetDlgItemText(wnd, 15, _expand_texts[mode == 1]);

	if (mode >= 0) {
		GetWindowRect(GetDlgItem(wnd, 11), &r2);
		offs = r2.bottom - r2.top + 10;
		if (!mode) offs = -offs;
		SetWindowPos(wnd, HWND_TOPMOST, 0, 0,
			r.right - r.left, r.bottom - r.top + offs, SWP_NOMOVE | SWP_NOZORDER);
	} else {
		SetWindowPos(wnd, HWND_TOPMOST,
			(GetSystemMetrics(SM_CXSCREEN) - (r.right - r.left)) / 2,
			(GetSystemMetrics(SM_CYSCREEN) - (r.bottom - r.top)) / 2,
			0, 0, SWP_NOSIZE);
	}
}

static bool DoEmergencySave(HWND wnd)
{
	bool b = false;

	EnableWindow(GetDlgItem(wnd, 13), FALSE);
	_did_emerg_save = true;
	__try {
		b = EmergencySave();
	} __except (1) {}
	return b;
}

static INT_PTR CALLBACK CrashDialogFunc(HWND wnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
	switch (msg) {
		case WM_INITDIALOG: {
#if defined(UNICODE)
			/* We need to put the crash-log in a seperate buffer because the default
			 * buffer in MB_TO_WIDE is not large enough (512 chars) */
			wchar_t crash_msgW[8096];
#endif
			SetDlgItemText(wnd, 10, _crash_desc);
			SetDlgItemText(wnd, 11, MB_TO_WIDE_BUFFER(_crash_msg, crash_msgW, lengthof(crash_msgW)));
			SendDlgItemMessage(wnd, 11, WM_SETFONT, (WPARAM)GetStockObject(ANSI_FIXED_FONT), FALSE);
			SetWndSize(wnd, -1);
		} return TRUE;
		case WM_COMMAND:
			switch (wParam) {
				case 12: /* Close */
					ExitProcess(0);
				case 13: /* Emergency save */
					if (DoEmergencySave(wnd)) {
						MessageBox(wnd, _save_succeeded, _T("Save successful"), MB_ICONINFORMATION);
					} else {
						MessageBox(wnd, _T("Save failed"), _T("Save failed"), MB_ICONINFORMATION);
					}
					break;
/* Disable the crash-save submit code as it's not used */
#if 0
				case 14: { /* Submit crash report */
					const TCHAR *s;

					SetCursor(LoadCursor(NULL, IDC_WAIT));

					s = SubmitCrashReport(wnd, _crash_msg, strlen(_crash_msg), _T(""));
					if (s != NULL) {
						MessageBox(wnd, s, _T("Error"), MB_ICONSTOP);
						break;
					}

					// try to submit emergency savegame
					if (_did_emerg_save || DoEmergencySave(wnd)) SubmitFile(wnd, _T("crash.sav"));

					// try to submit the autosaved game
					if (_opt.autosave) {
						TCHAR buf[40];
						_sntprintf(buf, lengthof(buf), _T("autosave%d.sav"), (_autosave_ctr - 1) & 3);
						SubmitFile(wnd, buf);
					}
					EnableWindow(GetDlgItem(wnd, 14), FALSE);
					SetCursor(LoadCursor(NULL, IDC_ARROW));
					MessageBox(wnd, _T("Crash report submitted. Thank you."), _T("Crash Report"), MB_ICONINFORMATION);
				} break;
#endif /* Disabled crash-submit procedures */
				case 15: /* Expand window to show crash-message */
					_expanded ^= 1;
					SetWndSize(wnd, _expanded);
					break;
			}
			return TRUE;
		case WM_CLOSE: ExitProcess(0);
	}

	return FALSE;
}

static void Handler2()
{
	ShowCursor(TRUE);
	ShowWindow(GetActiveWindow(), FALSE);
	DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(100), NULL, CrashDialogFunc);
}

extern bool CloseConsoleLogIfActive();

static HANDLE _file_crash_log;

static void GamelogPrintCrashLogProc(const char *s)
{
	DWORD num_written;
	WriteFile(_file_crash_log, s, (DWORD)strlen(s), &num_written, NULL);
	WriteFile(_file_crash_log, "\r\n", (DWORD)strlen("\r\n"), &num_written, NULL);
}

static LONG WINAPI ExceptionHandler(EXCEPTION_POINTERS *ep)
{
	char *output;
	static bool had_exception = false;

	if (had_exception) ExitProcess(0);
	had_exception = true;

	_ident = GetTickCount(); // something pretty unique

	MakeCRCTable(AllocaM(uint32, 256));
	_crash_msg = output = (char*)LocalAlloc(LMEM_FIXED, 8192);

	{
		SYSTEMTIME time;
		GetLocalTime(&time);
		output += sprintf(output,
			"*** OpenTTD Crash Report ***\r\n"
			"Date: %d-%.2d-%.2d %.2d:%.2d:%.2d\r\n"
			"Build: %s built on " __DATE__ " " __TIME__ "\r\n",
			time.wYear,
			time.wMonth,
			time.wDay,
			time.wHour,
			time.wMinute,
			time.wSecond,
			_openttd_revision
		);
	}

	if (_exception_string)
		output += sprintf(output, "Reason: %s\r\n", _exception_string);

	output += sprintf(output, "Language: %s\r\n", _dynlang.curr_file);

#ifdef _M_AMD64
	output += sprintf(output, "Exception %.8X at %.16IX\r\n"
		"Registers:\r\n"
		"RAX: %.16llX RBX: %.16llX RCX: %.16llX RDX: %.16llX\r\n"
		"RSI: %.16llX RDI: %.16llX RBP: %.16llX RSP: %.16llX\r\n"
		"R8:  %.16llX R9:  %.16llX R10: %.16llX R11: %.16llX\r\n"
		"R12: %.16llX R13: %.16llX R14: %.16llX R15: %.16llX\r\n"
		"RIP: %.16llX EFLAGS: %.8X\r\n"
		"\r\nBytes at CS:RIP:\r\n",
		ep->ExceptionRecord->ExceptionCode,
		ep->ExceptionRecord->ExceptionAddress,
		ep->ContextRecord->Rax,
		ep->ContextRecord->Rbx,
		ep->ContextRecord->Rcx,
		ep->ContextRecord->Rdx,
		ep->ContextRecord->Rsi,
		ep->ContextRecord->Rdi,
		ep->ContextRecord->Rbp,
		ep->ContextRecord->Rsp,
		ep->ContextRecord->R8,
		ep->ContextRecord->R9,
		ep->ContextRecord->R10,
		ep->ContextRecord->R11,
		ep->ContextRecord->R12,
		ep->ContextRecord->R13,
		ep->ContextRecord->R14,
		ep->ContextRecord->R15,
		ep->ContextRecord->Rip,
		ep->ContextRecord->EFlags
	);
#else
	output += sprintf(output, "Exception %.8X at %.8p\r\n"
		"Registers:\r\n"
		" EAX: %.8X EBX: %.8X ECX: %.8X EDX: %.8X\r\n"
		" ESI: %.8X EDI: %.8X EBP: %.8X ESP: %.8X\r\n"
		" EIP: %.8X EFLAGS: %.8X\r\n"
		"\r\nBytes at CS:EIP:\r\n",
		ep->ExceptionRecord->ExceptionCode,
		ep->ExceptionRecord->ExceptionAddress,
		ep->ContextRecord->Eax,
		ep->ContextRecord->Ebx,
		ep->ContextRecord->Ecx,
		ep->ContextRecord->Edx,
		ep->ContextRecord->Esi,
		ep->ContextRecord->Edi,
		ep->ContextRecord->Ebp,
		ep->ContextRecord->Esp,
		ep->ContextRecord->Eip,
		ep->ContextRecord->EFlags
	);
#endif

	{
#ifdef _M_AMD64
		byte *b = (byte*)ep->ContextRecord->Rip;
#else
		byte *b = (byte*)ep->ContextRecord->Eip;
#endif
		int i;
		for (i = 0; i != 24; i++) {
			if (IsBadReadPtr(b, 1)) {
				output += sprintf(output, " ??"); // OCR: WAS: , 0);
			} else {
				output += sprintf(output, " %.2X", *b);
			}
			b++;
		}
		output += sprintf(output,
			"\r\n"
			"\r\nStack trace: \r\n"
		);
	}

	{
		int i, j;
#ifdef _M_AMD64
		uint32 *b = (uint32*)ep->ContextRecord->Rsp;
#else
		uint32 *b = (uint32*)ep->ContextRecord->Esp;
#endif
		for (j = 0; j != 24; j++) {
			for (i = 0; i != 8; i++) {
				if (IsBadReadPtr(b, sizeof(uint32))) {
					output += sprintf(output, " ????????"); //OCR: WAS - , 0);
				} else {
					output += sprintf(output, " %.8X", *b);
				}
				b++;
			}
			output += sprintf(output, "\r\n");
		}
	}

	output += sprintf(output, "\r\nModule information:\r\n");
	output = PrintModuleList(output);

	{
		_OSVERSIONINFOA os;
		os.dwOSVersionInfoSize = sizeof(os);
		GetVersionExA(&os);
		output += sprintf(output, "\r\nSystem information:\r\n"
			" Windows version %d.%d %d %s\r\n\r\n",
			os.dwMajorVersion, os.dwMinorVersion, os.dwBuildNumber, os.szCSDVersion);
	}

	_file_crash_log = CreateFile(_T("crash.log"), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, 0);

	if (_file_crash_log != INVALID_HANDLE_VALUE) {
		DWORD num_written;
		WriteFile(_file_crash_log, _crash_msg, output - _crash_msg, &num_written, NULL);
	}

#if !defined(_DEBUG)
	HMODULE dbghelp = LoadLibrary(_T("dbghelp.dll"));
	if (dbghelp != NULL) {
		typedef BOOL (WINAPI *MiniDumpWriteDump_t)(HANDLE, DWORD, HANDLE,
				MINIDUMP_TYPE,
				CONST PMINIDUMP_EXCEPTION_INFORMATION,
				CONST PMINIDUMP_USER_STREAM_INFORMATION,
				CONST PMINIDUMP_CALLBACK_INFORMATION);
		MiniDumpWriteDump_t funcMiniDumpWriteDump = (MiniDumpWriteDump_t)GetProcAddress(dbghelp, "MiniDumpWriteDump");
		if (funcMiniDumpWriteDump != NULL) {
			HANDLE file  = CreateFile(_T("crash.dmp"), GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, 0);
			HANDLE proc  = GetCurrentProcess();
			DWORD procid = GetCurrentProcessId();
			MINIDUMP_EXCEPTION_INFORMATION mdei;
			MINIDUMP_USER_STREAM userstream;
			MINIDUMP_USER_STREAM_INFORMATION musi;
			char msg[] = "****** Built on " __DATE__ " " __TIME__ ". ******";

			userstream.Type        = LastReservedStream + 1;
			userstream.Buffer      = msg;
			userstream.BufferSize  = sizeof(msg);

			musi.UserStreamCount   = 1;
			musi.UserStreamArray   = &userstream;

			mdei.ThreadId = GetCurrentThreadId();
			mdei.ExceptionPointers  = ep;
			mdei.ClientPointers     = false;

			funcMiniDumpWriteDump(proc, procid, file, MiniDumpWithDataSegs, &mdei, &musi, NULL);
		}
		FreeLibrary(dbghelp);
	}
#endif

	if (_file_crash_log != INVALID_HANDLE_VALUE) {
		GamelogPrint(&GamelogPrintCrashLogProc);
		CloseHandle(_file_crash_log);
	}

	/* Close any possible log files */
	CloseConsoleLogIfActive();

	if (_safe_esp) {
#ifdef _M_AMD64
		ep->ContextRecord->Rip = (DWORD64)Handler2;
		ep->ContextRecord->Rsp = (DWORD64)_safe_esp;
#else
		ep->ContextRecord->Eip = (DWORD)Handler2;
		ep->ContextRecord->Esp = (DWORD)_safe_esp;
#endif
		return EXCEPTION_CONTINUE_EXECUTION;
	}


	return EXCEPTION_EXECUTE_HANDLER;
}

#ifdef _M_AMD64
extern "C" void *_get_safe_esp();
#endif

static void Win32InitializeExceptions()
{
#ifdef _M_AMD64
	_safe_esp = _get_safe_esp();
#else
	_asm {
		mov _safe_esp, esp
	}
#endif

	SetUnhandledExceptionFilter(ExceptionHandler);
}
#endif /* _MSC_VER */

/* Code below for windows version of opendir/readdir/closedir copied and
 * modified from Jan Wassenberg's GPL implementation posted over at
 * http://www.gamedev.net/community/forums/topic.asp?topic_id=364584&whichpage=1&#2398903 */

/* suballocator - satisfies most requests with a reusable static instance.
 * this avoids hundreds of alloc/free which would fragment the heap.
 * To guarantee concurrency, we fall back to malloc if the instance is
 * already in use (it's important to avoid suprises since this is such a
 * low-level routine). */
static DIR _global_dir;
static LONG _global_dir_is_in_use = false;

static inline DIR *dir_calloc()
{
	DIR *d;

	if (InterlockedExchange(&_global_dir_is_in_use, true) == (LONG)true) {
		d = CallocT<DIR>(1);
	} else {
		d = &_global_dir;
		memset(d, 0, sizeof(*d));
	}
	return d;
}

static inline void dir_free(DIR *d)
{
	if (d == &_global_dir) {
		_global_dir_is_in_use = (LONG)false;
	} else {
		free(d);
	}
}

DIR *opendir(const TCHAR *path)
{
	DIR *d;
	UINT sem = SetErrorMode(SEM_FAILCRITICALERRORS); // disable 'no-disk' message box
	DWORD fa = GetFileAttributes(path);

	if ((fa != INVALID_FILE_ATTRIBUTES) && (fa & FILE_ATTRIBUTE_DIRECTORY)) {
		d = dir_calloc();
		if (d != NULL) {
			TCHAR search_path[MAX_PATH];
			bool slash = path[_tcslen(path) - 1] == '\\';

			/* build search path for FindFirstFile, try not to append additional slashes
			 * as it throws Win9x off its groove for root directories */
			_sntprintf(search_path, lengthof(search_path), _T("%s%s*"), path, slash ? _T("") : _T("\\"));
			*lastof(search_path) = '\0';
			d->hFind = FindFirstFile(search_path, &d->fd);

			if (d->hFind != INVALID_HANDLE_VALUE ||
					GetLastError() == ERROR_NO_MORE_FILES) { // the directory is empty
				d->ent.dir = d;
				d->at_first_entry = true;
			} else {
				dir_free(d);
				d = NULL;
			}
		} else {
			errno = ENOMEM;
		}
	} else {
		/* path not found or not a directory */
		d = NULL;
		errno = ENOENT;
	}

	SetErrorMode(sem); // restore previous setting
	return d;
}

struct dirent *readdir(DIR *d)
{
	DWORD prev_err = GetLastError(); // avoid polluting last error

	if (d->at_first_entry) {
		/* the directory was empty when opened */
		if (d->hFind == INVALID_HANDLE_VALUE) return NULL;
		d->at_first_entry = false;
	} else if (!FindNextFile(d->hFind, &d->fd)) { // determine cause and bail
		if (GetLastError() == ERROR_NO_MORE_FILES) SetLastError(prev_err);
		return NULL;
	}

	/* This entry has passed all checks; return information about it.
	 * (note: d_name is a pointer; see struct dirent definition) */
	d->ent.d_name = d->fd.cFileName;
	return &d->ent;
}

int closedir(DIR *d)
{
	FindClose(d->hFind);
	dir_free(d);
	return 0;
}

bool FiosIsRoot(const char *file)
{
	return file[3] == '\0'; // C:\...
}

void FiosGetDrives()
{
#if defined(WINCE)
	/* WinCE only knows one drive: / */
	FiosItem *fios = _fios_items.Append();
	fios->type = FIOS_TYPE_DRIVE;
	fios->mtime = 0;
	snprintf(fios->name, lengthof(fios->name), PATHSEP "");
	ttd_strlcpy(fios->title, fios->name, lengthof(fios->title));
#else
	TCHAR drives[256];
	const TCHAR *s;

	GetLogicalDriveStrings(lengthof(drives), drives);
	for (s = drives; *s != '\0';) {
		FiosItem *fios = _fios_items.Append();
		fios->type = FIOS_TYPE_DRIVE;
		fios->mtime = 0;
		snprintf(fios->name, lengthof(fios->name),  "%c:", s[0] & 0xFF);
		ttd_strlcpy(fios->title, fios->name, lengthof(fios->title));
		while (*s++ != '\0') { /* Nothing */ }
	}
#endif
}

bool FiosIsValidFile(const char *path, const struct dirent *ent, struct stat *sb)
{
	/* hectonanoseconds between Windows and POSIX epoch */
	static const int64 posix_epoch_hns = 0x019DB1DED53E8000LL;
	const WIN32_FIND_DATA *fd = &ent->dir->fd;

	sb->st_size  = ((uint64) fd->nFileSizeHigh << 32) + fd->nFileSizeLow;
	/* UTC FILETIME to seconds-since-1970 UTC
	 * we just have to subtract POSIX epoch and scale down to units of seconds.
	 * http://www.gamedev.net/community/forums/topic.asp?topic_id=294070&whichpage=1&#1860504
	 * XXX - not entirely correct, since filetimes on FAT aren't UTC but local,
	 * this won't entirely be correct, but we use the time only for comparsion. */
	sb->st_mtime = (time_t)((*(uint64*)&fd->ftLastWriteTime - posix_epoch_hns) / 1E7);
	sb->st_mode  = (fd->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)? S_IFDIR : S_IFREG;

	return true;
}

bool FiosIsHiddenFile(const struct dirent *ent)
{
	return (ent->dir->fd.dwFileAttributes & (FILE_ATTRIBUTE_HIDDEN | FILE_ATTRIBUTE_SYSTEM)) != 0;
}

bool FiosGetDiskFreeSpace(const char *path, uint32 *tot)
{
	UINT sem = SetErrorMode(SEM_FAILCRITICALERRORS);  // disable 'no-disk' message box
	bool retval = false;
	TCHAR root[4];
	DWORD spc, bps, nfc, tnc;

	_sntprintf(root, lengthof(root), _T("%c:") _T(PATHSEP), path[0]);
	if (tot != NULL && GetDiskFreeSpace(root, &spc, &bps, &nfc, &tnc)) {
		*tot = ((spc * bps) * (uint64)nfc) >> 20;
		retval = true;
	}

	SetErrorMode(sem); // reset previous setting
	return retval;
}

static int ParseCommandLine(char *line, char **argv, int max_argc)
{
	int n = 0;

	do {
		/* skip whitespace */
		while (*line == ' ' || *line == '\t') line++;

		/* end? */
		if (*line == '\0') break;

		/* special handling when quoted */
		if (*line == '"') {
			argv[n++] = ++line;
			while (*line != '"') {
				if (*line == '\0') return n;
				line++;
			}
		} else {
			argv[n++] = line;
			while (*line != ' ' && *line != '\t') {
				if (*line == '\0') return n;
				line++;
			}
		}
		*line++ = '\0';
	} while (n != max_argc);

	return n;
}

void CreateConsole()
{
#if defined(WINCE)
	/* WinCE doesn't support console stuff */
#else
	HANDLE hand;
	CONSOLE_SCREEN_BUFFER_INFO coninfo;

	if (_has_console) return;
	_has_console = true;

	AllocConsole();

	hand = GetStdHandle(STD_OUTPUT_HANDLE);
	GetConsoleScreenBufferInfo(hand, &coninfo);
	coninfo.dwSize.Y = 500;
	SetConsoleScreenBufferSize(hand, coninfo.dwSize);

	/* redirect unbuffered STDIN, STDOUT, STDERR to the console */
#if !defined(__CYGWIN__)
	*stdout = *_fdopen( _open_osfhandle((intptr_t)hand, _O_TEXT), "w" );
	*stdin = *_fdopen(_open_osfhandle((intptr_t)GetStdHandle(STD_INPUT_HANDLE), _O_TEXT), "r" );
	*stderr = *_fdopen(_open_osfhandle((intptr_t)GetStdHandle(STD_ERROR_HANDLE), _O_TEXT), "w" );
#else
	/* open_osfhandle is not in cygwin */
	*stdout = *fdopen(1, "w" );
	*stdin = *fdopen(0, "r" );
	*stderr = *fdopen(2, "w" );
#endif

	setvbuf(stdin, NULL, _IONBF, 0);
	setvbuf(stdout, NULL, _IONBF, 0);
	setvbuf(stderr, NULL, _IONBF, 0);
#endif
}

void ShowInfo(const char *str)
{
	if (_has_console) {
		fprintf(stderr, "%s\n", str);
	} else {
		bool old;
#if defined(UNICODE)
			/* We need to put the text in a seperate buffer because the default
			 * buffer in MB_TO_WIDE might not be large enough (512 chars) */
			wchar_t help_msgW[4096];
#endif
		ReleaseCapture();
		_left_button_clicked =_left_button_down = false;

		old = MyShowCursor(true);
		if (MessageBox(GetActiveWindow(), MB_TO_WIDE_BUFFER(str, help_msgW, lengthof(help_msgW)), _T("OpenTTD"), MB_ICONINFORMATION | MB_OKCANCEL) == IDCANCEL) {
			CreateConsole();
		}
		MyShowCursor(old);
	}
}

#if defined(WINCE)
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
#else
int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
#endif
{
	int argc;
	char *argv[64]; // max 64 command line arguments
	char *cmdline;

#if !defined(UNICODE)
	_codepage = GetACP(); // get system codepage as some kind of a default
#endif /* UNICODE */

#if defined(UNICODE)

#if !defined(WINCE)
	/* Check if a win9x user started the win32 version */
	if (HasBit(GetVersion(), 31)) usererror("This version of OpenTTD doesn't run on windows 95/98/ME.\nPlease download the win9x binary and try again.");
#endif

	/* For UNICODE we need to convert the commandline to char* _AND_
	 * save it because argv[] points into this buffer and thus needs to
	 * be available between subsequent calls to FS2OTTD() */
	char cmdlinebuf[MAX_PATH];
#endif /* UNICODE */

	cmdline = WIDE_TO_MB_BUFFER(GetCommandLine(), cmdlinebuf, lengthof(cmdlinebuf));

#if defined(_DEBUG)
	CreateConsole();
#endif

#if !defined(WINCE)
	_set_error_mode(_OUT_TO_MSGBOX); // force assertion output to messagebox
#endif

	/* setup random seed to something quite random */
	SetRandomSeed(GetTickCount());

	argc = ParseCommandLine(cmdline, argv, lengthof(argv));

#if defined(WIN32_EXCEPTION_TRACKER)
	Win32InitializeExceptions();
#endif

#if defined(WIN32_EXCEPTION_TRACKER_DEBUG)
	_try {
		LONG WINAPI ExceptionHandler(EXCEPTION_POINTERS *ep);
#endif
		ttd_main(argc, argv);

#if defined(WIN32_EXCEPTION_TRACKER_DEBUG)
	} _except (ExceptionHandler(_exception_info())) {}
#endif

	return 0;
}

#if defined(WINCE)
void GetCurrentDirectoryW(int length, wchar_t *path)
{
	/* Get the name of this module */
	GetModuleFileName(NULL, path, length);

	/* Remove the executable name, this we call CurrentDir */
	wchar_t *pDest = wcsrchr(path, '\\');
	if (pDest != NULL) {
		int result = pDest - path + 1;
		path[result] = '\0';
	}
}
#endif

char *getcwd(char *buf, size_t size)
{
#if defined(WINCE)
	TCHAR path[MAX_PATH];
	GetModuleFileName(NULL, path, MAX_PATH);
	convert_from_fs(path, buf, size);
	/* GetModuleFileName returns dir with file, so remove everything behind latest '\\' */
	char *p = strrchr(buf, '\\');
	if (p != NULL) *p = '\0';
#elif defined(UNICODE)
	TCHAR path[MAX_PATH];
	GetCurrentDirectory(MAX_PATH - 1, path);
	convert_from_fs(path, buf, size);
#else
	GetCurrentDirectory(size, buf);
#endif
	return buf;
}


void DetermineBasePaths(const char *exe)
{
	extern void ScanForTarFiles();
	char tmp[MAX_PATH];
	TCHAR path[MAX_PATH];
#ifdef WITH_PERSONAL_DIR
	SHGetFolderPath(NULL, CSIDL_PERSONAL, NULL, SHGFP_TYPE_CURRENT, path);
	strecpy(tmp, WIDE_TO_MB_BUFFER(path, tmp, lengthof(tmp)), lastof(tmp));
	AppendPathSeparator(tmp, MAX_PATH);
	ttd_strlcat(tmp, PERSONAL_DIR, MAX_PATH);
	AppendPathSeparator(tmp, MAX_PATH);
	_searchpaths[SP_PERSONAL_DIR] = strdup(tmp);

	SHGetFolderPath(NULL, CSIDL_COMMON_DOCUMENTS, NULL, SHGFP_TYPE_CURRENT, path);
	strecpy(tmp, WIDE_TO_MB_BUFFER(path, tmp, lengthof(tmp)), lastof(tmp));
	AppendPathSeparator(tmp, MAX_PATH);
	ttd_strlcat(tmp, PERSONAL_DIR, MAX_PATH);
	AppendPathSeparator(tmp, MAX_PATH);
	_searchpaths[SP_SHARED_DIR] = strdup(tmp);
#else
	_searchpaths[SP_PERSONAL_DIR] = NULL;
	_searchpaths[SP_SHARED_DIR]   = NULL;
#endif

	/* Get the path to working directory of OpenTTD */
	getcwd(tmp, lengthof(tmp));
	AppendPathSeparator(tmp, MAX_PATH);
	_searchpaths[SP_WORKING_DIR] = strdup(tmp);

	if (!GetModuleFileName(NULL, path, lengthof(path))) {
		DEBUG(misc, 0, "GetModuleFileName failed (%d)\n", GetLastError());
		_searchpaths[SP_BINARY_DIR] = NULL;
	} else {
		TCHAR exec_dir[MAX_PATH];
		_tcsncpy(path, MB_TO_WIDE_BUFFER(exe, path, lengthof(path)), lengthof(path));
		if (!GetFullPathName(path, lengthof(exec_dir), exec_dir, NULL)) {
			DEBUG(misc, 0, "GetFullPathName failed (%d)\n", GetLastError());
			_searchpaths[SP_BINARY_DIR] = NULL;
		} else {
			strecpy(tmp, WIDE_TO_MB_BUFFER(exec_dir, tmp, lengthof(tmp)), lastof(tmp));
			char *s = strrchr(tmp, PATHSEPCHAR);
			*(s + 1) = '\0';
			_searchpaths[SP_BINARY_DIR] = strdup(tmp);
		}
	}

	_searchpaths[SP_INSTALLATION_DIR]       = NULL;
	_searchpaths[SP_APPLICATION_BUNDLE_DIR] = NULL;

	ScanForTarFiles();
}

/**
 * Insert a chunk of text from the clipboard onto the textbuffer. Get TEXT clipboard
 * and append this up to the maximum length (either absolute or screenlength). If maxlength
 * is zero, we don't care about the screenlength but only about the physical length of the string
 * @param tb Textbuf type to be changed
 * @return true on successful change of Textbuf, or false otherwise
 */
bool InsertTextBufferClipboard(Textbuf *tb)
{
	HGLOBAL cbuf;
	char utf8_buf[512];
	const char *ptr;

	WChar c;
	uint16 width, length;

	if (IsClipboardFormatAvailable(CF_UNICODETEXT)) {
		OpenClipboard(NULL);
		cbuf = GetClipboardData(CF_UNICODETEXT);

		ptr = (const char*)GlobalLock(cbuf);
		const char *ret = convert_from_fs((wchar_t*)ptr, utf8_buf, lengthof(utf8_buf));
		GlobalUnlock(cbuf);
		CloseClipboard();

		if (*ret == '\0') return false;
#if !defined(UNICODE)
	} else if (IsClipboardFormatAvailable(CF_TEXT)) {
		OpenClipboard(NULL);
		cbuf = GetClipboardData(CF_TEXT);

		ptr = (const char*)GlobalLock(cbuf);
		ttd_strlcpy(utf8_buf, FS2OTTD(ptr), lengthof(utf8_buf));

		GlobalUnlock(cbuf);
		CloseClipboard();
#endif /* UNICODE */
	} else {
		return false;
	}

	width = length = 0;

	for (ptr = utf8_buf; (c = Utf8Consume(&ptr)) != '\0';) {
		if (!IsPrintable(c)) break;

		byte len = Utf8CharLen(c);
		if (tb->length + length >= tb->maxlength - len) break;

		byte charwidth = GetCharacterWidth(FS_NORMAL, c);
		if (tb->maxwidth != 0 && width + tb->width + charwidth > tb->maxwidth) break;

		width += charwidth;
		length += len;
	}

	if (length == 0) return false;

	memmove(tb->buf + tb->caretpos + length, tb->buf + tb->caretpos, tb->length - tb->caretpos);
	memcpy(tb->buf + tb->caretpos, utf8_buf, length);
	tb->width += width;
	tb->caretxoffs += width;

	tb->length += length;
	tb->caretpos += length;
	assert(tb->length < tb->maxlength);
	tb->buf[tb->length] = '\0'; // terminating zero

	return true;
}


void CSleep(int milliseconds)
{
	Sleep(milliseconds);
}


/** Utility function to get the current timestamp in milliseconds
 * Useful for profiling */
int64 GetTS()
{
	static double freq;
	__int64 value;
	if (!freq) {
		QueryPerformanceFrequency((LARGE_INTEGER*)&value);
		freq = (double)1000000 / value;
	}
	QueryPerformanceCounter((LARGE_INTEGER*)&value);
	return (__int64)(value * freq);
}


/**
 * Convert to OpenTTD's encoding from that of the local environment.
 * When the project is built in UNICODE, the system codepage is irrelevant and
 * the input string is wide. In ANSI mode, the string is in the
 * local codepage which we'll convert to wide-char, and then to UTF-8.
 * OpenTTD internal encoding is UTF8.
 * The returned value's contents can only be guaranteed until the next call to
 * this function. So if the value is needed for anything else, use convert_from_fs
 * @param name pointer to a valid string that will be converted (local, or wide)
 * @return pointer to the converted string; if failed string is of zero-length
 * @see the current code-page comes from video\win32_v.cpp, event-notification
 * WM_INPUTLANGCHANGE */
const char *FS2OTTD(const TCHAR *name)
{
	static char utf8_buf[512];
#if defined(UNICODE)
	return convert_from_fs(name, utf8_buf, lengthof(utf8_buf));
#else
	char *s = utf8_buf;

	for (; *name != '\0'; name++) {
		wchar_t w;
		int len = MultiByteToWideChar(_codepage, 0, name, 1, &w, 1);
		if (len != 1) {
			DEBUG(misc, 0, "[utf8] M2W error converting '%c'. Errno %d", *name, GetLastError());
			continue;
		}

		if (s + Utf8CharLen(w) >= lastof(utf8_buf)) break;
		s += Utf8Encode(s, w);
	}

	*s = '\0';
	return utf8_buf;
#endif /* UNICODE */
}

/**
 * Convert from OpenTTD's encoding to that of the local environment.
 * When the project is built in UNICODE the system codepage is irrelevant and
 * the converted string is wide. In ANSI mode, the UTF8 string is converted
 * to multi-byte.
 * OpenTTD internal encoding is UTF8.
 * The returned value's contents can only be guaranteed until the next call to
 * this function. So if the value is needed for anything else, use convert_from_fs
 * @param name pointer to a valid string that will be converted (UTF8)
 * @return pointer to the converted string; if failed string is of zero-length
 * @see the current code-page comes from video\win32_v.cpp, event-notification
 * WM_INPUTLANGCHANGE */
const TCHAR *OTTD2FS(const char *name)
{
	static TCHAR system_buf[512];
#if defined(UNICODE)
	return convert_to_fs(name, system_buf, lengthof(system_buf));
#else
	char *s = system_buf;

	for (WChar c; (c = Utf8Consume(&name)) != '\0';) {
		if (s >= lastof(system_buf)) break;

		char mb;
		int len = WideCharToMultiByte(_codepage, 0, (wchar_t*)&c, 1, &mb, 1, NULL, NULL);
		if (len != 1) {
			DEBUG(misc, 0, "[utf8] W2M error converting '0x%X'. Errno %d", c, GetLastError());
			continue;
		}

		*s++ = mb;
	}

	*s = '\0';
	return system_buf;
#endif /* UNICODE */
}


/** Convert to OpenTTD's encoding from that of the environment in
 * UNICODE. OpenTTD encoding is UTF8, local is wide
 * @param name pointer to a valid string that will be converted
 * @param utf8_buf pointer to a valid buffer that will receive the converted string
 * @param buflen length in characters of the receiving buffer
 * @return pointer to utf8_buf. If conversion fails the string is of zero-length */
char *convert_from_fs(const wchar_t *name, char *utf8_buf, size_t buflen)
{
	int len = WideCharToMultiByte(CP_UTF8, 0, name, -1, utf8_buf, (int)buflen, NULL, NULL);
	if (len == 0) {
		DEBUG(misc, 0, "[utf8] W2M error converting wide-string. Errno %d", GetLastError());
		utf8_buf[0] = '\0';
	}

	return utf8_buf;
}


/** Convert from OpenTTD's encoding to that of the environment in
 * UNICODE. OpenTTD encoding is UTF8, local is wide
 * @param name pointer to a valid string that will be converted
 * @param utf16_buf pointer to a valid wide-char buffer that will receive the
 * converted string
 * @param buflen length in wide characters of the receiving buffer
 * @return pointer to utf16_buf. If conversion fails the string is of zero-length */
wchar_t *convert_to_fs(const char *name, wchar_t *utf16_buf, size_t buflen)
{
	int len = MultiByteToWideChar(CP_UTF8, 0, name, -1, utf16_buf, (int)buflen);
	if (len == 0) {
		DEBUG(misc, 0, "[utf8] M2W error converting '%s'. Errno %d", name, GetLastError());
		utf16_buf[0] = '\0';
	}

	return utf16_buf;
}

/** Our very own SHGetFolderPath function for support of windows operating
 * systems that don't have this function (eg Win9x, etc.). We try using the
 * native function, and if that doesn't exist we will try a more crude approach
 * of environment variables and hope for the best */
HRESULT OTTDSHGetFolderPath(HWND hwnd, int csidl, HANDLE hToken, DWORD dwFlags, LPTSTR pszPath)
{
	static HRESULT (WINAPI *SHGetFolderPath)(HWND, int, HANDLE, DWORD, LPTSTR) = NULL;
	static bool first_time = true;

	/* We only try to load the library one time; if it fails, it fails */
	if (first_time) {
#if defined(UNICODE)
# define W(x) x "W"
#else
# define W(x) x "A"
#endif
		if (!LoadLibraryList((Function*)&SHGetFolderPath, "SHFolder.dll\0" W("SHGetFolderPath") "\0\0")) {
			DEBUG(misc, 0, "Unable to load " W("SHGetFolderPath") "from SHFolder.dll");
		}
#undef W
		first_time = false;
	}

	if (SHGetFolderPath != NULL) return SHGetFolderPath(hwnd, csidl, hToken, dwFlags, pszPath);

	/* SHGetFolderPath doesn't exist, try a more conservative approach,
	 * eg environment variables. This is only included for legacy modes
	 * MSDN says: that 'pszPath' is a "Pointer to a null-terminated string of
	 * length MAX_PATH which will receive the path" so let's assume that
	 * Windows 95 with Internet Explorer 5.0, Windows 98 with Internet Explorer 5.0,
	 * Windows 98 Second Edition (SE), Windows NT 4.0 with Internet Explorer 5.0,
	 * Windows NT 4.0 with Service Pack 4 (SP4) */
	{
		DWORD ret;
		switch (csidl) {
			case CSIDL_FONTS: /* Get the system font path, eg %WINDIR%\Fonts */
				ret = GetEnvironmentVariable(_T("WINDIR"), pszPath, MAX_PATH);
				if (ret == 0) break;
				_tcsncat(pszPath, _T("\\Fonts"), MAX_PATH);

				return (HRESULT)0;
				break;
			/* XXX - other types to go here when needed... */
		}
	}

	return E_INVALIDARG;
}

/** Determine the current user's locale. */
const char *GetCurrentLocale(const char *)
{
	char lang[9], country[9];
	if (GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_SISO639LANGNAME, lang, lengthof(lang)) == 0 ||
	    GetLocaleInfoA(LOCALE_USER_DEFAULT, LOCALE_SISO3166CTRYNAME, country, lengthof(country)) == 0) {
		/* Unable to retrieve the locale. */
		return NULL;
	}
	/* Format it as 'en_us'. */
	static char retbuf[6] = {lang[0], lang[1], '_', country[0], country[1], 0};
	return retbuf;
}