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/* $Id$ */

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/** @file os2.cpp OS2 related OS support. */

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#include "stdafx.h"

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#include "openttd.h"

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#include "variables.h"

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#include "gui.h"

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#include "fileio.h"

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#include "fios.h" // opendir/readdir/closedir

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#include "functions.h"

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#include "core/random_func.hpp"

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#include "string_func.h"

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#include "textbuf_gui.h"

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#include "table/strings.h"

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#include <dirent.h>

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#include <unistd.h>

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#include <sys/stat.h>

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#include <stdlib.h>

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#include <time.h>

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#ifndef __INNOTEK_LIBC__

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	#include <dos.h>

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#endif

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#define INCL_WIN

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#define INCL_WINCLIPBOARD

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#include <os2.h>

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#ifndef __INNOTEK_LIBC__

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	#include <i86.h>

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#endif

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bool FiosIsRoot(const char *file)

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{

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	return file[3] == '\0';

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}

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void FiosGetDrives()

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{

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	unsigned disk, disk2, save, total;

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#ifndef __INNOTEK_LIBC__

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	_dos_getdrive(&save); // save original drive

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#else

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	save = _getdrive(); // save original drive

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	char wd[MAX_PATH];

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	getcwd(wd, MAX_PATH);

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	total = 'z';

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#endif

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	/* get an available drive letter */

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#ifndef __INNOTEK_LIBC__

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	for (disk = 1;; disk++) {

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		_dos_setdrive(disk, &total);

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#else

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	for (disk = 'A';; disk++) {

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		_chdrive(disk);

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#endif

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		if (disk >= total)  break;

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#ifndef __INNOTEK_LIBC__

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		_dos_getdrive(&disk2);

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#else

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		disk2 = _getdrive();

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#endif

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		if (disk == disk2) {

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			FiosItem *fios = _fios_items.Append();

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			fios->type = FIOS_TYPE_DRIVE;

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			fios->mtime = 0;

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#ifndef __INNOTEK_LIBC__

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			snprintf(fios->name, lengthof(fios->name),  "%c:", 'A' + disk - 1);

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#else

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			snprintf(fios->name, lengthof(fios->name),  "%c:", disk);

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#endif

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			ttd_strlcpy(fios->title, fios->name, lengthof(fios->title));

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		}

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	}

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	/* Restore the original drive */

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#ifndef __INNOTEK_LIBC__

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	_dos_setdrive(save, &total);

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#else

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	chdir(wd);

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#endif

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}

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bool FiosGetDiskFreeSpace(const char *path, uint32 *tot)

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{

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#ifndef __INNOTEK_LIBC__

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	struct diskfree_t free;

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	char drive = path[0] - 'A' + 1;

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	if (tot != NULL && _getdiskfree(drive, &free) == 0) {

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		*tot = free.avail_clusters * free.sectors_per_cluster * free.bytes_per_sector;

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		return true;

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	}

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	return false;

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#else

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	uint32 free = 0;

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#ifdef HAS_STATVFS

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	{

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		struct statvfs s;

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		if (statvfs(path, &s) != 0) return false;

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		free = (uint64)s.f_frsize * s.f_bavail >> 20;

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	}

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#endif

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	if (tot != NULL) *tot = free;

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	return true;

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#endif

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}

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bool FiosIsValidFile(const char *path, const struct dirent *ent, struct stat *sb)

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{

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	char filename[MAX_PATH];

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	snprintf(filename, lengthof(filename), "%s" PATHSEP "%s", path, ent->d_name);

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	return stat(filename, sb) == 0;

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}

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bool FiosIsHiddenFile(const struct dirent *ent)

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{

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	return ent->d_name[0] == '.';

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}

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void ShowInfo(const char *str)

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{

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	HAB hab;

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	HMQ hmq;

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	ULONG rc;

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	// init PM env.

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	hmq = WinCreateMsgQueue((hab = WinInitialize(0)), 0);

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	// display the box

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	rc = WinMessageBox(HWND_DESKTOP, HWND_DESKTOP, (const unsigned char *)str, (const unsigned char *)"OpenTTD", 0, MB_OK | MB_MOVEABLE | MB_INFORMATION);

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	// terminate PM env.

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	WinDestroyMsgQueue(hmq);

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	WinTerminate(hab);

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}

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void ShowOSErrorBox(const char *buf, bool system)

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{

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	HAB hab;

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	HMQ hmq;

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	ULONG rc;

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	// init PM env.

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	hmq = WinCreateMsgQueue((hab = WinInitialize(0)), 0);

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	// display the box

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	rc = WinMessageBox(HWND_DESKTOP, HWND_DESKTOP, (const unsigned char *)buf, (const unsigned char *)"OpenTTD", 0, MB_OK | MB_MOVEABLE | MB_ERROR);

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	// terminate PM env.

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	WinDestroyMsgQueue(hmq);

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	WinTerminate(hab);

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}

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int CDECL main(int argc, char* argv[])

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{

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	SetRandomSeed(time(NULL));

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	return ttd_main(argc, argv);

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}

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/**

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 * Insert a chunk of text from the clipboard onto the textbuffer. Get TEXT clipboard

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 * and append this up to the maximum length (either absolute or screenlength). If maxlength

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 * is zero, we don't care about the screenlength but only about the physical length of the string

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 * @param tb Textbuf type to be changed

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 * @return Return true on successful change of Textbuf, or false otherwise

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 */

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bool InsertTextBufferClipboard(Textbuf *tb)

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{

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/* XXX -- Currently no clipboard support implemented with GCC */

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#ifndef __INNOTEK_LIBC__

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	HAB hab = 0;

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	if (WinOpenClipbrd(hab))

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	{

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		const char* text = (const char*)WinQueryClipbrdData(hab, CF_TEXT);

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		if (text != NULL)

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		{

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			uint length = 0;

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			uint width = 0;

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			const char* i;

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			for (i = text; IsValidAsciiChar(*i); i++)

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			{

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				uint w;

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				if (tb->length + length >= tb->maxlength - 1) break;

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				w = GetCharacterWidth(FS_NORMAL, (byte)*i);

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				if (tb->maxwidth != 0 && width + tb->width + w > tb->maxwidth) break;

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				width += w;

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				length++;

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			}

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			memmove(tb->buf + tb->caretpos + length, tb->buf + tb->caretpos, tb->length - tb->caretpos + 1);

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			memcpy(tb->buf + tb->caretpos, text, length);

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			tb->width += width;

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			tb->caretxoffs += width;

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			tb->length += length;

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			tb->caretpos += length;

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			WinCloseClipbrd(hab);

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			return true;

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		}

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		WinCloseClipbrd(hab);

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	}

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#endif

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	return false;

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}

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void CSleep(int milliseconds)

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{

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#ifndef __INNOTEK_LIBC__

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	delay(milliseconds);

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#else

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	usleep(milliseconds * 1000);

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#endif

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}

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const char *FS2OTTD(const char *name) {return name;}

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const char *OTTD2FS(const char *name) {return name;}