1

/* $Id$ */

     2

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/** @file fios.cpp

     4

 * This file contains functions for building file lists for the save/load dialogs.

     5

 */

     6

     7

#include "stdafx.h"

     8

#include "openttd.h"

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#include "variables.h"

    10

#include "heightmap.h"

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#include "fios.h"

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#include "fileio_func.h"

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#include "functions.h"

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#include "string_func.h"

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#include <sys/types.h>

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#include <sys/stat.h>

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    18

#ifdef WIN32

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# include <tchar.h>

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# ifndef UNICODE

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#  include <io.h>

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# endif

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# define access _taccess

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# define unlink _tunlink

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#else

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# include <unistd.h>

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#endif /* WIN32 */

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#include "table/strings.h"

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/* Variables to display file lists */

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SmallVector<FiosItem, 32> _fios_items;

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static char *_fios_path;

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SmallFiosItem _file_to_saveload;

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/* OS-specific functions are taken from their respective files (win32/unix/os2 .c) */

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extern bool FiosIsRoot(const char *path);

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

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extern bool FiosIsHiddenFile(const struct dirent *ent);

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extern void FiosGetDrives();

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

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/* get the name of an oldstyle savegame */

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extern void GetOldSaveGameName(char *title, const char *path, const char *file);

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/**

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 * Compare two FiosItem's. Used with qsort when sorting the file list.

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 * @param a A pointer to the first FiosItem to compare.

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 * @param b A pointer to the second FiosItem to compare.

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 * @return -1, 0 or 1, depending on how the two items should be sorted.

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 */

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int CDECL compare_FiosItems(const void *a, const void *b)

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{

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	const FiosItem *da = (const FiosItem *)a;

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	const FiosItem *db = (const FiosItem *)b;

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	int r;

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	if (_savegame_sort_order & SORT_BY_NAME) {

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		r = strcasecmp(da->title, db->title);

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	} else {

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		r = da->mtime < db->mtime ? -1 : 1;

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	}

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	if (_savegame_sort_order & SORT_DESCENDING) r = -r;

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	return r;

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}

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/** Clear the list */

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void FiosFreeSavegameList()

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{

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	_fios_items.Clear();

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	_fios_items.Compact();

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};

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/**

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 * Get descriptive texts. Returns the path and free space

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 * left on the device

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 * @param path string describing the path

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 * @param total_free total free space in megabytes, optional (can be NULL)

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 * @return StringID describing the path (free space or failure)

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 */

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StringID FiosGetDescText(const char **path, uint32 *total_free)

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{

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	*path = _fios_path;

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	return FiosGetDiskFreeSpace(*path, total_free) ? STR_4005_BYTES_FREE : STR_4006_UNABLE_TO_READ_DRIVE;

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}

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/* Browse to a new path based on the passed FiosItem struct

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 * @param *item FiosItem object telling us what to do

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 * @return a string if we have given a file as a target, otherwise NULL */

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char *FiosBrowseTo(const FiosItem *item)

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{

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	char *path = _fios_path;

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	switch (item->type) {

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		case FIOS_TYPE_DRIVE:

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#if defined(WINCE)

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			snprintf(path, MAX_PATH, PATHSEP "");

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#elif defined(WIN32) || defined(__OS2__)

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			snprintf(path, MAX_PATH, "%c:" PATHSEP, item->title[0]);

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#endif

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		/* Fallthrough */

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		case FIOS_TYPE_INVALID:

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			break;

   105

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		case FIOS_TYPE_PARENT: {

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			/* Check for possible NULL ptr (not required for UNIXes, but AmigaOS-alikes) */

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			char *s = strrchr(path, PATHSEPCHAR);

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			if (s != NULL && s != path) {

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				s[0] = '\0'; // Remove last path separator character, so we can go up one level.

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			}

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			s = strrchr(path, PATHSEPCHAR);

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			if (s != NULL) s[1] = '\0'; // go up a directory

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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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			else if ((s = strrchr(path, ':')) != NULL) s[1] = '\0';

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#endif

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			break;

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		}

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		case FIOS_TYPE_DIR:

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			strcat(path, item->name);

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			strcat(path, PATHSEP);

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			break;

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   126

		case FIOS_TYPE_DIRECT:

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			snprintf(path, MAX_PATH, "%s", item->name);

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			break;

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		case FIOS_TYPE_FILE:

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		case FIOS_TYPE_OLDFILE:

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		case FIOS_TYPE_SCENARIO:

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		case FIOS_TYPE_OLD_SCENARIO:

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		case FIOS_TYPE_PNG:

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		case FIOS_TYPE_BMP:

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		{

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			static char str_buffr[512];

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			snprintf(str_buffr, lengthof(str_buffr), "%s%s", path, item->name);

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			return str_buffr;

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		}

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	}

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	return NULL;

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}

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void FiosMakeSavegameName(char *buf, const char *name, size_t size)

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{

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	const char *extension, *period;

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	extension = (_game_mode == GM_EDITOR) ? ".scn" : ".sav";

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	/* Don't append the extension if it is already there */

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	period = strrchr(name, '.');

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	if (period != NULL && strcasecmp(period, extension) == 0) extension = "";

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

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	if (_fios_path != NULL) {

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		unsigned char sepchar = _fios_path[(strlen(_fios_path) - 1)];

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		if (sepchar != ':' && sepchar != '/') {

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			snprintf(buf, size, "%s" PATHSEP "%s%s", _fios_path, name, extension);

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		} else {

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			snprintf(buf, size, "%s%s%s", _fios_path, name, extension);

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		}

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	} else {

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		snprintf(buf, size, "%s%s", name, extension);

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	}

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#else

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	snprintf(buf, size, "%s" PATHSEP "%s%s", _fios_path, name, extension);

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#endif

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}

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#if defined(WIN32)

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# define unlink _tunlink

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#endif

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bool FiosDelete(const char *name)

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{

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	char filename[512];

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	FiosMakeSavegameName(filename, name, lengthof(filename));

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	return unlink(OTTD2FS(filename)) == 0;

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}

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bool FileExists(const char *filename)

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{

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#if defined(WINCE)

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	/* There is always one platform that doesn't support basic commands... */

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	HANDLE hand = CreateFile(OTTD2FS(filename), 0, 0, NULL, OPEN_EXISTING, 0, NULL);

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	if (hand == INVALID_HANDLE_VALUE) return 1;

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	CloseHandle(hand);

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	return 0;

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#else

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	return access(OTTD2FS(filename), 0) == 0;

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#endif

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}

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typedef FiosType fios_getlist_callback_proc(SaveLoadDialogMode mode, const char *filename, const char *ext, char *title);

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/** Create a list of the files in a directory, according to some arbitrary rule.

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 *  @param mode The mode we are in. Some modes don't allow 'parent'.

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 *  @param callback_proc The function that is called where you need to do the filtering.

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 *  @return Return the list of files. */

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static FiosItem *FiosGetFileList(SaveLoadDialogMode mode, fios_getlist_callback_proc *callback_proc)

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{

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	struct stat sb;

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	struct dirent *dirent;

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	DIR *dir;

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	FiosItem *fios;

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	int sort_start;

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	char d_name[sizeof(fios->name)];

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	_fios_items.Clear();

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	/* A parent directory link exists if we are not in the root directory */

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	if (!FiosIsRoot(_fios_path) && mode != SLD_NEW_GAME) {

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		fios = _fios_items.Append();

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		fios->type = FIOS_TYPE_PARENT;

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		fios->mtime = 0;

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		strecpy(fios->name, "..", lastof(fios->name));

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		strecpy(fios->title, ".. (Parent directory)", lastof(fios->title));

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	}

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	/* Show subdirectories */

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	if (mode != SLD_NEW_GAME && (dir = ttd_opendir(_fios_path)) != NULL) {

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		while ((dirent = readdir(dir)) != NULL) {

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			strecpy(d_name, FS2OTTD(dirent->d_name), lastof(d_name));

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			/* found file must be directory, but not '.' or '..' */

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			if (FiosIsValidFile(_fios_path, dirent, &sb) && S_ISDIR(sb.st_mode) &&

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					(!FiosIsHiddenFile(dirent) || strncasecmp(d_name, PERSONAL_DIR, strlen(d_name)) == 0) &&

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					strcmp(d_name, ".") != 0 && strcmp(d_name, "..") != 0) {

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				fios = _fios_items.Append();

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				fios->type = FIOS_TYPE_DIR;

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				fios->mtime = 0;

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				strecpy(fios->name, d_name, lastof(fios->name));

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				snprintf(fios->title, lengthof(fios->title), "%s" PATHSEP " (Directory)", d_name);

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				str_validate(fios->title);

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			}

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		}

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		closedir(dir);

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	}

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	/* Sort the subdirs always by name, ascending, remember user-sorting order */

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	{

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		byte order = _savegame_sort_order;

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		_savegame_sort_order = SORT_BY_NAME | SORT_ASCENDING;

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		qsort(_fios_items.Begin(), _fios_items.Length(), sizeof(FiosItem), compare_FiosItems);

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		_savegame_sort_order = order;

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	}

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	/* This is where to start sorting for the filenames */

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	sort_start = _fios_items.Length();

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	/* Show files */

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	dir = ttd_opendir(_fios_path);

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	if (dir != NULL) {

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		while ((dirent = readdir(dir)) != NULL) {

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			char fios_title[64];

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			char *t;

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			strecpy(d_name, FS2OTTD(dirent->d_name), lastof(d_name));

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			if (!FiosIsValidFile(_fios_path, dirent, &sb) || !S_ISREG(sb.st_mode) || FiosIsHiddenFile(dirent)) continue;

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			/* File has no extension, skip it */

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			if ((t = strrchr(d_name, '.')) == NULL) continue;

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			fios_title[0] = '\0'; // reset the title;

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			FiosType type = callback_proc(mode, d_name, t, fios_title);

   269

			if (type != FIOS_TYPE_INVALID) {

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				fios = _fios_items.Append();

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				fios->mtime = sb.st_mtime;

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				fios->type = type;

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				strecpy(fios->name, d_name, lastof(fios->name));

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				/* Some callbacks want to lookup the title of the file. Allow that.

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				 * If we just copy the title from the filename, strip the extension */

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				t = (fios_title[0] == '\0') ? *t = '\0', d_name : fios_title;

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				strecpy(fios->title, t, lastof(fios->title));

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				str_validate(fios->title);

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			}

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		}

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		closedir(dir);

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	}

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	qsort(_fios_items.Get(sort_start), _fios_items.Length() - sort_start, sizeof(FiosItem), compare_FiosItems);

   286

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	/* Show drives */

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	if (mode != SLD_NEW_GAME) FiosGetDrives();

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	_fios_items.Compact();

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	return _fios_items.Begin();

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}

   294

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/**

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 * Callback for FiosGetFileList. It tells if a file is a savegame or not.

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 * @param mode Save/load mode.

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 * @param file Name of the file to check.

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 * @param ext A pointer to the extension identifier inside file

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 * @param title Buffer if a callback wants to lookup the title of the file; NULL to skip the lookup

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 * @return a FIOS_TYPE_* type of the found file, FIOS_TYPE_INVALID if not a savegame

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 * @see FiosGetFileList

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 * @see FiosGetSavegameList

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 */

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FiosType FiosGetSavegameListCallback(SaveLoadDialogMode mode, const char *file, const char *ext, char *title)

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{

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	/* Show savegame files

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	 * .SAV OpenTTD saved game

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	 * .SS1 Transport Tycoon Deluxe preset game

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	 * .SV1 Transport Tycoon Deluxe (Patch) saved game

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	 * .SV2 Transport Tycoon Deluxe (Patch) saved 2-player game */

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	if (strcasecmp(ext, ".sav") == 0) return FIOS_TYPE_FILE;

   313

   314

	if (mode == SLD_LOAD_GAME || mode == SLD_LOAD_SCENARIO) {

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		if (strcasecmp(ext, ".ss1") == 0 || strcasecmp(ext, ".sv1") == 0 ||

   316

				strcasecmp(ext, ".sv2") == 0) {

   317

			if (title != NULL) GetOldSaveGameName(title, _fios_path, file);

   318

			return FIOS_TYPE_OLDFILE;

   319

		}

   320

	}

   321

   322

	return FIOS_TYPE_INVALID;

   323

}

   324

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/**

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 * Get a list of savegames.

   327

 * @param mode Save/load mode.

   328

 * @return A pointer to an array of FiosItem representing all the files to be shown in the save/load dialog.

   329

 * @see FiosGetFileList

   330

 */

   331

void FiosGetSavegameList(SaveLoadDialogMode mode)

   332

{

   333

	static char *fios_save_path = NULL;

   334

   335

	if (fios_save_path == NULL) {

   336

		fios_save_path = MallocT<char>(MAX_PATH);

   337

		FioGetDirectory(fios_save_path, MAX_PATH, SAVE_DIR);

   338

	}

   339

   340

	_fios_path = fios_save_path;

   341

   342

	FiosGetFileList(mode, &FiosGetSavegameListCallback);

   343

}

   344

   345

/**

   346

 * Callback for FiosGetFileList. It tells if a file is a scenario or not.

   347

 * @param mode Save/load mode.

   348

 * @param file Name of the file to check.

   349

 * @param ext A pointer to the extension identifier inside file

   350

 * @param title Buffer if a callback wants to lookup the title of the file

   351

 * @return a FIOS_TYPE_* type of the found file, FIOS_TYPE_INVALID if not a scenario

   352

 * @see FiosGetFileList

   353

 * @see FiosGetScenarioList

   354

 */

   355

static FiosType FiosGetScenarioListCallback(SaveLoadDialogMode mode, const char *file, const char *ext, char *title)

   356

{

   357

	/* Show scenario files

   358

	 * .SCN OpenTTD style scenario file

   359

	 * .SV0 Transport Tycoon Deluxe (Patch) scenario

   360

	 * .SS0 Transport Tycoon Deluxe preset scenario */

   361

	if (strcasecmp(ext, ".scn") == 0) return FIOS_TYPE_SCENARIO;

   362

   363

	if (mode == SLD_LOAD_GAME || mode == SLD_LOAD_SCENARIO || mode == SLD_NEW_GAME) {

   364

		if (strcasecmp(ext, ".sv0") == 0 || strcasecmp(ext, ".ss0") == 0 ) {

   365

			GetOldSaveGameName(title, _fios_path, file);

   366

			return FIOS_TYPE_OLD_SCENARIO;

   367

		}

   368

	}

   369

   370

	return FIOS_TYPE_INVALID;

   371

}

   372

   373

/**

   374

 * Get a list of scenarios.

   375

 * @param mode Save/load mode.

   376

 * @return A pointer to an array of FiosItem representing all the files to be shown in the save/load dialog.

   377

 * @see FiosGetFileList

   378

 */

   379

void FiosGetScenarioList(SaveLoadDialogMode mode)

   380

{

   381

	static char *fios_scn_path = NULL;

   382

   383

	/* Copy the default path on first run or on 'New Game' */

   384

	if (fios_scn_path == NULL) {

   385

		fios_scn_path = MallocT<char>(MAX_PATH);

   386

		FioGetDirectory(fios_scn_path, MAX_PATH, SCENARIO_DIR);

   387

	}

   388

   389

	_fios_path = fios_scn_path;

   390

   391

	FiosGetFileList(mode, &FiosGetScenarioListCallback);

   392

}

   393

   394

static FiosType FiosGetHeightmapListCallback(SaveLoadDialogMode mode, const char *file, const char *ext, char *title)

   395

{

   396

	/* Show heightmap files

   397

	 * .PNG PNG Based heightmap files

   398

	 * .BMP BMP Based heightmap files

   399

	 */

   400

   401

#ifdef WITH_PNG

   402

	if (strcasecmp(ext, ".png") == 0) return FIOS_TYPE_PNG;

   403

#endif /* WITH_PNG */

   404

   405

	if (strcasecmp(ext, ".bmp") == 0) return FIOS_TYPE_BMP;

   406

   407

	return FIOS_TYPE_INVALID;

   408

}

   409

   410

/* Get a list of Heightmaps */

   411

void FiosGetHeightmapList(SaveLoadDialogMode mode)

   412

{

   413

	static char *fios_hmap_path = NULL;

   414

   415

	if (fios_hmap_path == NULL) {

   416

		fios_hmap_path = MallocT<char>(MAX_PATH);

   417

		FioGetDirectory(fios_hmap_path, MAX_PATH, HEIGHTMAP_DIR);

   418

	}

   419

   420

	_fios_path = fios_hmap_path;

   421

   422

	FiosGetFileList(mode, &FiosGetHeightmapListCallback);

   423

}