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/* $Id$ */

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#include "stdafx.h"

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#include "openttd.h"

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#include "functions.h"

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#include "window.h"

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#include "string.h"

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#include "table/strings.h"

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#include "hal.h"

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#include "variables.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 <time.h>

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#include <signal.h>

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#ifdef USE_HOMEDIR

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#include <pwd.h>

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#endif

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#if (defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L) || defined(__GLIBC__)

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	#define HAS_STATVFS

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#endif

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#ifdef HAS_STATVFS

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#include <sys/statvfs.h>

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#endif

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#ifdef __MORPHOS__

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#include <exec/types.h>

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ULONG __stack = (1024*1024)*2; // maybe not that much is needed actually ;)

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// The system supplied definition of SIG_IGN does not match

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#undef SIG_IGN

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#define SIG_IGN (void (*)(int))1

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#endif /* __MORPHOS__ */

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#ifdef __AMIGA__

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#warning add stack symbol to avoid that user needs to set stack manually (tokai)

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// ULONG __stack =

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#endif

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#if defined(__APPLE__)

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	#if defined(WITH_SDL)

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		//the mac implementation needs this file included in the same file as main()

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		#include <SDL.h>

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	#endif

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#endif

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extern char *_fios_path;

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extern FiosItem *_fios_items;

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extern int _fios_count, _fios_alloc;

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bool FiosIsRoot(const char *path)

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{

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#if !defined(__MORPHOS__) && !defined(__AMIGAOS__)

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	return path[1] == '\0';

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#else

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	/* On MorphOS or AmigaOS paths look like: "Volume:directory/subdirectory" */

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	const char *s = strchr(path, ':');

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	return s[1] == '\0';

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#endif

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}

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void FiosGetDrives(void)

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{

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	return;

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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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#if defined(__MORPHOS__) || defined(__AMIGAOS__)

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	/* On MorphOS or AmigaOS paths look like: "Volume:directory/subdirectory" */

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	if (FiosIsRoot(path)) {

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

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	} else // XXX - only next line!

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#endif

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

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	if (stat(filename, sb) != 0) return false;

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	return (ent->d_name[0] != '.'); // hidden file

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}

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#if defined(__BEOS__) || defined(__linux__)

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static void ChangeWorkingDirectory(char *exe)

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{

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	char *s = strrchr(exe, '/');

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	if (s != NULL) {

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		*s = '\0';

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		chdir(exe);

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		*s = '/';

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	}

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}

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#endif

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void ShowInfo(const char *str)

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{

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	puts(str);

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}

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void ShowOSErrorBox(const char *buf)

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{

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#if defined(__APPLE__)

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	// this creates an NSAlertPanel with the contents of 'buf'

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	// this is the native and nicest way to do this on OSX

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	ShowMacDialog( buf, "See readme for more info\nMost likely you are missing files from the original TTD", "Quit" );

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#else

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	// all systems, but OSX

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	fprintf(stderr, "\033[1;31mError: %s\033[0;39m\n", buf);

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#endif

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}

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#ifdef WITH_COCOA

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void cocoaSetWorkingDirectory(void);

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void cocoaSetupAutoreleasePool(void);

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void cocoaReleaseAutoreleasePool(void);

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#endif

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

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{

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	int ret;

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#ifdef WITH_COCOA

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	cocoaSetupAutoreleasePool();

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	/* This is passed if we are launched by double-clicking */

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	if (argc >= 2 && strncmp(argv[1], "-psn", 4) == 0) {

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		argv[1] = NULL;

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		argc = 1;

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		cocoaSetWorkingDirectory();

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	}

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#endif

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	// change the working directory to enable doubleclicking in UIs

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#if defined(__BEOS__) || defined(__linux__)

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	ChangeWorkingDirectory(argv[0]);

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#endif

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	_random_seeds[0][1] = _random_seeds[0][0] = time(NULL);

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	SeedMT(_random_seeds[0][1]);

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	signal(SIGPIPE, SIG_IGN);

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	ret = ttd_main(argc, argv);

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#ifdef WITH_COCOA

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	cocoaReleaseAutoreleasePool();

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#endif

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	return ret;

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}

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void DeterminePaths(void)

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{

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	char *s;

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	_path.game_data_dir = malloc(MAX_PATH);

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	ttd_strlcpy(_path.game_data_dir, GAME_DATA_DIR, MAX_PATH);

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	#if defined SECOND_DATA_DIR

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	_path.second_data_dir = malloc(MAX_PATH);

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	ttd_strlcpy(_path.second_data_dir, SECOND_DATA_DIR, MAX_PATH);

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	#endif

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#if defined(USE_HOMEDIR)

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	{

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		const char *homedir = getenv("HOME");

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		if (homedir == NULL) {

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			const struct passwd *pw = getpwuid(getuid());

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			if (pw != NULL) homedir = pw->pw_dir;

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		}

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		_path.personal_dir = str_fmt("%s" PATHSEP "%s", homedir, PERSONAL_DIR);

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	}

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#else /* not defined(USE_HOMEDIR) */

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	_path.personal_dir = malloc(MAX_PATH);

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	ttd_strlcpy(_path.personal_dir, PERSONAL_DIR, MAX_PATH);

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	// check if absolute or relative path

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	s = strchr(_path.personal_dir, '/');

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	// add absolute path

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	if (s == NULL || _path.personal_dir != s) {

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		getcwd(_path.personal_dir, MAX_PATH);

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		s = strchr(_path.personal_dir, 0);

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		*s++ = '/';

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		ttd_strlcpy(s, PERSONAL_DIR, MAX_PATH);

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	}

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#endif /* defined(USE_HOMEDIR) */

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	s = strchr(_path.personal_dir, 0);

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	// append a / ?

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	if (s[-1] != '/') strcpy(s, "/");

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	_path.save_dir = str_fmt("%ssave", _path.personal_dir);

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	_path.autosave_dir = str_fmt("%s/autosave", _path.save_dir);

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	_path.scenario_dir = str_fmt("%sscenario", _path.personal_dir);

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	_path.gm_dir = str_fmt("%sgm/", _path.game_data_dir);

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	_path.data_dir = str_fmt("%sdata/", _path.game_data_dir);

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	if (_config_file == NULL)

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		_config_file = str_fmt("%sopenttd.cfg", _path.personal_dir);

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	_highscore_file = str_fmt("%shs.dat", _path.personal_dir);

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	_log_file = str_fmt("%sopenttd.log", _path.personal_dir);

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#if defined CUSTOM_LANG_DIR

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	// sets the search path for lng files to the custom one

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	_path.lang_dir = malloc( MAX_PATH );

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	ttd_strlcpy( _path.lang_dir, CUSTOM_LANG_DIR, MAX_PATH);

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#else

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	_path.lang_dir = str_fmt("%slang/", _path.game_data_dir);

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#endif

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	// create necessary folders

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	mkdir(_path.personal_dir, 0755);

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	mkdir(_path.save_dir, 0755);

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	mkdir(_path.autosave_dir, 0755);

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	mkdir(_path.scenario_dir, 0755);

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}

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bool InsertTextBufferClipboard(Textbuf *tb)

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{

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	return false;

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}

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// multi os compatible sleep function

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#ifdef __AMIGA__

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// usleep() implementation

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#	include <devices/timer.h>

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#	include <dos/dos.h>

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	extern struct Device      *TimerBase    = NULL;

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	extern struct MsgPort     *TimerPort    = NULL;

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	extern struct timerequest *TimerRequest = NULL;

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#endif // __AMIGA__

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void CSleep(int milliseconds)

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{

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	#if !defined(__BEOS__) && !defined(__AMIGA__)

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		usleep(milliseconds * 1000);

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	#endif

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	#ifdef __BEOS__

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		snooze(milliseconds * 1000);

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	#endif

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	#if defined(__AMIGA__)

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	{

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		ULONG signals;

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		ULONG TimerSigBit = 1 << TimerPort->mp_SigBit;

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		// send IORequest

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		TimerRequest->tr_node.io_Command = TR_ADDREQUEST;

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		TimerRequest->tr_time.tv_secs    = (milliseconds * 1000) / 1000000;

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		TimerRequest->tr_time.tv_micro   = (milliseconds * 1000) % 1000000;

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		SendIO((struct IORequest *)TimerRequest);

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		if (!((signals = Wait(TimerSigBit | SIGBREAKF_CTRL_C)) & TimerSigBit) ) {

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			AbortIO((struct IORequest *)TimerRequest);

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		}

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		WaitIO((struct IORequest *)TimerRequest);

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	}

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	#endif // __AMIGA__

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}

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#ifdef WITH_ICONV

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#include <iconv.h>

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#include <errno.h>

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#include "debug.h"

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#define INTERNALCODE "ISO-8859-15"

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/** Try and try to decipher the current locale from environmental

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 * variables. MacOSX is hardcoded, other OS's are dynamic. If no suitable

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 * locale can be found, don't do any conversion "" */

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static const char *GetLocalCode(void)

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{

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#if defined(__APPLE__)

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	return "UTF-8-MAC";

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#else

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	/* Strip locale (eg en_US.UTF-8) to only have UTF-8 */

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	const char *locale = GetCurrentLocale("LC_CTYPE");

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	if (locale != NULL) locale = strchr(locale, '.');

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	return (locale == NULL) ? "" : locale + 1;

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#endif

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}

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/** FYI: This is not thread-safe.

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 * convert between locales, which from and which to is set in the calling

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 * functions OTTD2FS() and FS2OTTD(). You should NOT use this function directly

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 * NOTE: iconv was added in OSX 10.3. 10.2.x will still have the invalid char

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 * issues. There aren't any easy fix for this */

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static const char *convert_tofrom_fs(iconv_t convd, const char *name)

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{

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	static char buf[1024];

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	/* Work around buggy iconv implementation where inbuf is wrongly typed as

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	 * non-const. Correct implementation is at

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	 * http://www.opengroup.org/onlinepubs/007908799/xsh/iconv.html */

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#if defined (__GLIBC__) || defined (__GNU_LIBRARY__)

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	char *inbuf = (char*)name;

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#else

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	const char *inbuf = name;

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#endif

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	char *outbuf  = buf;

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	size_t outlen = sizeof(buf) - 1;

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	size_t inlen  = strlen(name);

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	ttd_strlcpy(outbuf, name, sizeof(buf));

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	iconv(convd, NULL, NULL, NULL, NULL);

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	if (iconv(convd, &inbuf, &inlen, &outbuf, &outlen) == (size_t)(-1)) {

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		DEBUG(misc, 0) ("[Iconv] Error converting '%s'. Errno %d", name, errno);

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	}

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	*outbuf = '\0';

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	// FIX: invalid characters will abort conversion, but they shouldn't occur?

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	return buf;

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}

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/** Convert from OpenTTD's encoding to that of the local environment

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 * @param name pointer to a valid string that will be converted

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 * @return pointer to a new stringbuffer that contains the converted string */

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const char *OTTD2FS(const char *name)

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{

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	static iconv_t convd = (iconv_t)(-1);

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	if (convd == (iconv_t)(-1)) {

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		const char *env = GetLocalCode();

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		convd = iconv_open(env, INTERNALCODE);

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		if (convd == (iconv_t)(-1)) {

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			DEBUG(misc, 0) ("[iconv] Conversion from codeset '%s' to '%s' unsupported", INTERNALCODE, env);

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			return name;

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		}

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	}

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	return convert_tofrom_fs(convd, name);

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}

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/** Convert to OpenTTD's encoding from that of the local environment

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 * @param name pointer to a valid string that will be converted

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 * @return pointer to a new stringbuffer that contains the converted string */

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const char *FS2OTTD(const char *name)

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{

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	static iconv_t convd = (iconv_t)(-1);

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	if (convd == (iconv_t)(-1)) {

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		const char *env = GetLocalCode();

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		convd = iconv_open(INTERNALCODE, env);

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		if (convd == (iconv_t)(-1)) {

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			DEBUG(misc, 0) ("[iconv] Conversion from codeset '%s' to '%s' unsupported", env, INTERNALCODE);

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			return name;

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		}

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	}

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	return convert_tofrom_fs(convd, name);

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}

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#else

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

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

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#endif /* WITH_ICONV */