/* $Id$ */ /** @file fios.c * This file contains functions for building file lists for the save/load dialogs. */ #include "stdafx.h" #include "openttd.h" #include "hal.h" #include "string.h" #include "variables.h" #include "functions.h" #include "heightmap.h" #include "table/strings.h" #include "fios.h" #include <sys/types.h> #include <sys/stat.h> #ifdef WIN32 # include <io.h> #else # include <unistd.h> # include <dirent.h> #endif /* WIN32 */ /* Variables to display file lists */ int _fios_num; static char *_fios_path; static FiosItem *_fios_items; static int _fios_count, _fios_alloc; /* OS-specific functions are taken from their respective files (win32/unix/os2 .c) */ extern bool FiosIsRoot(const char *path); extern bool FiosIsValidFile(const char *path, const struct dirent *ent, struct stat *sb); extern void FiosGetDrives(void); extern bool FiosGetDiskFreeSpace(const char *path, uint32 *tot); /* get the name of an oldstyle savegame */ extern void GetOldSaveGameName(char *title, const char *path, const char *file); /** * Allocate a new FiosItem. * @return A pointer to the newly allocated FiosItem. */ FiosItem *FiosAlloc(void) { if (_fios_count == _fios_alloc) { _fios_alloc += 256; _fios_items = realloc(_fios_items, _fios_alloc * sizeof(FiosItem)); } return &_fios_items[_fios_count++]; } /** * Compare two FiosItem's. Used with qsort when sorting the file list. * @param a A pointer to the first FiosItem to compare. * @param a A pointer to the second FiosItem to compare. * @return -1, 0 or 1, depending on how the two items should be sorted. */ int CDECL compare_FiosItems(const void *a, const void *b) { const FiosItem *da = (const FiosItem *)a; const FiosItem *db = (const FiosItem *)b; int r; if (_savegame_sort_order & SORT_BY_NAME) { r = strcasecmp(da->title, db->title); } else { r = da->mtime < db->mtime ? -1 : 1; } if (_savegame_sort_order & SORT_DESCENDING) r = -r; return r; } /** * Free the list of savegames */ void FiosFreeSavegameList(void) { free(_fios_items); _fios_items = NULL; _fios_alloc = _fios_count = 0; } /** * Get descriptive texts. Returns the path and free space * left on the device * @param path string describing the path * @param total_free total free space in megabytes, optional (can be NULL) * @return StringID describing the path (free space or failure) */ StringID FiosGetDescText(const char **path, uint32 *total_free) { *path = _fios_path; return FiosGetDiskFreeSpace(*path, total_free) ? STR_4005_BYTES_FREE : STR_4006_UNABLE_TO_READ_DRIVE; } /* Browse to a new path based on the passed FiosItem struct * @param *item FiosItem object telling us what to do * @return a string if we have given a file as a target, otherwise NULL */ char *FiosBrowseTo(const FiosItem *item) { char *s; char *path = _fios_path; switch (item->type) { #if defined(WIN32) || defined(__OS2__) case FIOS_TYPE_DRIVE: sprintf(path, "%c:" PATHSEP, item->title[0]); break; #endif case FIOS_TYPE_PARENT: /* Check for possible NULL ptr (not required for UNIXes, but AmigaOS-alikes) */ if ((s = strrchr(path, PATHSEPCHAR)) != NULL) { s[1] = '\0'; // go up a directory if (!FiosIsRoot(path)) s[0] = '\0'; } #if defined(__MORPHOS__) || defined(__AMIGAOS__) /* On MorphOS or AmigaOS paths look like: "Volume:directory/subdirectory" */ else if ((s = strrchr(path, ':')) != NULL) s[1] = '\0'; #endif break; case FIOS_TYPE_DIR: if (!FiosIsRoot(path)) strcat(path, PATHSEP); strcat(path, item->name); break; case FIOS_TYPE_DIRECT: sprintf(path, "%s" PATHSEP, item->name); s = strrchr(path, PATHSEPCHAR); if (s != NULL && s[1] == '\0') s[0] = '\0'; // strip trailing slash break; case FIOS_TYPE_FILE: case FIOS_TYPE_OLDFILE: case FIOS_TYPE_SCENARIO: case FIOS_TYPE_OLD_SCENARIO: case FIOS_TYPE_PNG: case FIOS_TYPE_BMP: { static char str_buffr[512]; #if defined(__MORPHOS__) || defined(__AMIGAOS__) /* On MorphOS or AmigaOS paths look like: "Volume:directory/subdirectory" */ if (FiosIsRoot(path)) { snprintf(str_buffr, lengthof(str_buffr), "%s:%s", path, item->name); } else // XXX - only next line! #endif snprintf(str_buffr, lengthof(str_buffr), "%s" PATHSEP "%s", path, item->name); return str_buffr; } } return NULL; } void FiosMakeSavegameName(char *buf, const char *name, size_t size) { const char *extension, *period; extension = (_game_mode == GM_EDITOR) ? ".scn" : ".sav"; /* Don't append the extension if it is already there */ period = strrchr(name, '.'); if (period != NULL && strcasecmp(period, extension) == 0) extension = ""; snprintf(buf, size, "%s" PATHSEP "%s%s", _fios_path, name, extension); } bool FiosDelete(const char *name) { char filename[512]; FiosMakeSavegameName(filename, name, lengthof(filename)); return unlink(filename) == 0; } bool FileExists(const char *filename) { return access(filename, 0) == 0; } typedef byte fios_getlist_callback_proc(int mode, const char *filename, const char *ext, char *title); /** Create a list of the files in a directory, according to some arbitrary rule. * @param num Will be filled with the amount of items. * @param mode The mode we are in. Some modes don't allow 'parent'. * @param callback The function that is called where you need to do the filtering. * @return Return the list of files. */ static FiosItem *FiosGetFileList(int mode, fios_getlist_callback_proc *callback_proc) { struct stat sb; struct dirent *dirent; DIR *dir; FiosItem *fios; int sort_start; /* A parent directory link exists if we are not in the root directory */ if (!FiosIsRoot(_fios_path) && mode != SLD_NEW_GAME) { fios = FiosAlloc(); fios->type = FIOS_TYPE_PARENT; fios->mtime = 0; ttd_strlcpy(fios->name, "..", lengthof(fios->name)); ttd_strlcpy(fios->title, ".. (Parent directory)", lengthof(fios->title)); } /* Show subdirectories */ if (mode != SLD_NEW_GAME && (dir = opendir(_fios_path)) != NULL) { while ((dirent = readdir(dir)) != NULL) { /* found file must be directory, but not '.' or '..' */ if (FiosIsValidFile(_fios_path, dirent, &sb) && (sb.st_mode & S_IFDIR) && strcmp(dirent->d_name, ".") != 0 && strcmp(dirent->d_name, "..") != 0) { fios = FiosAlloc(); fios->type = FIOS_TYPE_DIR; fios->mtime = 0; ttd_strlcpy(fios->name, dirent->d_name, lengthof(fios->name)); snprintf(fios->title, lengthof(fios->title), "%s" PATHSEP " (Directory)", FS2OTTD(dirent->d_name)); str_validate(fios->title); } } closedir(dir); } /* Sort the subdirs always by name, ascending, remember user-sorting order */ { byte order = _savegame_sort_order; _savegame_sort_order = SORT_BY_NAME | SORT_ASCENDING; qsort(_fios_items, _fios_count, sizeof(FiosItem), compare_FiosItems); _savegame_sort_order = order; } /* This is where to start sorting for the filenames */ sort_start = _fios_count; /* Show files */ dir = opendir(_fios_path); if (dir != NULL) { while ((dirent = readdir(dir)) != NULL) { char fios_title[64]; char *t; byte type; if (!FiosIsValidFile(_fios_path, dirent, &sb) || !(sb.st_mode & S_IFREG)) continue; /* File has no extension, skip it */ if ((t = strrchr(dirent->d_name, '.')) == NULL) continue; fios_title[0] = '\0'; // reset the title; type = callback_proc(mode, dirent->d_name, t, fios_title); if (type != FIOS_TYPE_INVALID) { fios = FiosAlloc(); fios->mtime = sb.st_mtime; fios->type = type; ttd_strlcpy(fios->name, dirent->d_name, lengthof(fios->name)); /* Some callbacks want to lookup the title of the file. Allow that. * If we just copy the title from the filename, strip the extension */ t = (fios_title[0] == '\0') ? *t = '\0', dirent->d_name : fios_title; ttd_strlcpy(fios->title, FS2OTTD(t), lengthof(fios->title)); str_validate(fios->title); } } closedir(dir); } qsort(_fios_items + sort_start, _fios_count - sort_start, sizeof(FiosItem), compare_FiosItems); /* Show drives */ if (mode != SLD_NEW_GAME) FiosGetDrives(); _fios_num = _fios_count; return _fios_items; } /** * Callback for FiosGetFileList. It tells if a file is a savegame or not. * @param mode Save/load mode. * @param file Name of the file to check. * @param ext A pointer to the extension identifier inside file * @param title Buffer if a callback wants to lookup the title of the file * @return a FIOS_TYPE_* type of the found file, FIOS_TYPE_INVALID if not a savegame * @see FiosGetFileList * @see FiosGetSavegameList */ static byte FiosGetSavegameListCallback(int mode, const char *file, const char *ext, char *title) { /* Show savegame files * .SAV OpenTTD saved game * .SS1 Transport Tycoon Deluxe preset game * .SV1 Transport Tycoon Deluxe (Patch) saved game * .SV2 Transport Tycoon Deluxe (Patch) saved 2-player game */ if (strcasecmp(ext, ".sav") == 0) return FIOS_TYPE_FILE; if (mode == SLD_LOAD_GAME || mode == SLD_LOAD_SCENARIO) { if (strcasecmp(ext, ".ss1") == 0 || strcasecmp(ext, ".sv1") == 0 || strcasecmp(ext, ".sv2") == 0) { GetOldSaveGameName(title, _fios_path, file); return FIOS_TYPE_OLDFILE; } } return FIOS_TYPE_INVALID; } /** * Get a list of savegames. * @param mode Save/load mode. * @return A pointer to an array of FiosItem representing all the files to be shown in the save/load dialog. * @see FiosGetFileList */ FiosItem *FiosGetSavegameList(int mode) { static char *_fios_save_path = NULL; if (_fios_save_path == NULL) { _fios_save_path = malloc(MAX_PATH); ttd_strlcpy(_fios_save_path, _path.save_dir, MAX_PATH); } _fios_path = _fios_save_path; return FiosGetFileList(mode, &FiosGetSavegameListCallback); } /** * Callback for FiosGetFileList. It tells if a file is a scenario or not. * @param mode Save/load mode. * @param file Name of the file to check. * @param ext A pointer to the extension identifier inside file * @param title Buffer if a callback wants to lookup the title of the file * @return a FIOS_TYPE_* type of the found file, FIOS_TYPE_INVALID if not a scenario * @see FiosGetFileList * @see FiosGetScenarioList */ static byte FiosGetScenarioListCallback(int mode, const char *file, const char *ext, char *title) { /* Show scenario files * .SCN OpenTTD style scenario file * .SV0 Transport Tycoon Deluxe (Patch) scenario * .SS0 Transport Tycoon Deluxe preset scenario */ if (strcasecmp(ext, ".scn") == 0) return FIOS_TYPE_SCENARIO; if (mode == SLD_LOAD_GAME || mode == SLD_LOAD_SCENARIO || mode == SLD_NEW_GAME) { if (strcasecmp(ext, ".sv0") == 0 || strcasecmp(ext, ".ss0") == 0 ) { GetOldSaveGameName(title, _fios_path, file); return FIOS_TYPE_OLD_SCENARIO; } } return FIOS_TYPE_INVALID; } /** * Get a list of scenarios. * @param mode Save/load mode. * @return A pointer to an array of FiosItem representing all the files to be shown in the save/load dialog. * @see FiosGetFileList */ FiosItem *FiosGetScenarioList(int mode) { static char *_fios_scn_path = NULL; if (_fios_scn_path == NULL) { _fios_scn_path = malloc(MAX_PATH); ttd_strlcpy(_fios_scn_path, _path.scenario_dir, MAX_PATH); } _fios_path = _fios_scn_path; return FiosGetFileList(mode, &FiosGetScenarioListCallback); } static byte FiosGetHeightmapListCallback(int mode, const char *file, const char *ext, char *title) { /* Show heightmap files * .PNG PNG Based heightmap files * .BMP BMP Based heightmap files */ #ifdef WITH_PNG if (strcasecmp(ext, ".png") == 0) return FIOS_TYPE_PNG; #endif /* WITH_PNG */ if (strcasecmp(ext, ".bmp") == 0) return FIOS_TYPE_BMP; return FIOS_TYPE_INVALID; } // Get a list of Heightmaps FiosItem *FiosGetHeightmapList(int mode) { static char *_fios_hmap_path = NULL; if (_fios_hmap_path == NULL) { _fios_hmap_path = malloc(MAX_PATH); strcpy(_fios_hmap_path, _path.heightmap_dir); } _fios_path = _fios_hmap_path; return FiosGetFileList(mode, &FiosGetHeightmapListCallback); }