+ dir->dir = opendir(dir_name);
+
+ if (dir->dir != NULL)
+ {
+ dir->filename = getStringCopy(dir_name);
+
+ return dir;
+ }
+
+#if defined(PLATFORM_ANDROID)
+ char *asset_toc_filename = getPath2(dir_name, ASSET_TOC_BASENAME);
+
+ dir->asset_toc_file = SDL_RWFromFile(asset_toc_filename, MODE_READ);
+
+ checked_free(asset_toc_filename);
+
+ if (dir->asset_toc_file != NULL)
+ {
+ dir->directory_is_asset = TRUE;
+ dir->filename = getStringCopy(dir_name);
+
+ return dir;
+ }
+#endif
+
+ checked_free(dir);
+
+ return NULL;
+}
+
+int closeDirectory(Directory *dir)
+{
+ if (dir == NULL)
+ return -1;
+
+ int result = 0;
+
+#if defined(PLATFORM_ANDROID)
+ if (dir->asset_toc_file)
+ result = SDL_RWclose(dir->asset_toc_file);
+#endif
+
+ if (dir->dir)
+ result = closedir(dir->dir);
+
+ if (dir->dir_entry)
+ freeDirectoryEntry(dir->dir_entry);
+
+ checked_free(dir->filename);
+ checked_free(dir);
+
+ return result;
+}
+
+DirectoryEntry *readDirectory(Directory *dir)
+{
+ if (dir->dir_entry)
+ freeDirectoryEntry(dir->dir_entry);
+
+ dir->dir_entry = NULL;
+
+#if defined(PLATFORM_ANDROID)
+ if (dir->directory_is_asset)
+ {
+ char line[MAX_LINE_LEN];
+ char *line_ptr = line;
+ int num_bytes_read = 0;
+
+ while (num_bytes_read < MAX_LINE_LEN - 1 &&
+ SDL_RWread(dir->asset_toc_file, line_ptr, 1, 1) == 1 &&
+ *line_ptr != '\n')
+ {
+ line_ptr++;
+ num_bytes_read++;
+ }
+
+ *line_ptr = '\0';
+
+ if (strlen(line) == 0)
+ return NULL;
+
+ dir->dir_entry = checked_calloc(sizeof(DirectoryEntry));
+
+ dir->dir_entry->is_directory = FALSE;
+ if (line[strlen(line) - 1] == '/')
+ {
+ dir->dir_entry->is_directory = TRUE;
+
+ line[strlen(line) - 1] = '\0';
+ }
+
+ dir->dir_entry->basename = getStringCopy(line);
+ dir->dir_entry->filename = getPath2(dir->filename, line);
+
+ return dir->dir_entry;
+ }
+#endif
+
+ struct dirent *dir_entry = readdir(dir->dir);
+
+ if (dir_entry == NULL)
+ return NULL;
+
+ dir->dir_entry = checked_calloc(sizeof(DirectoryEntry));
+
+ dir->dir_entry->basename = getStringCopy(dir_entry->d_name);
+ dir->dir_entry->filename = getPath2(dir->filename, dir_entry->d_name);
+
+ struct stat file_status;
+
+ dir->dir_entry->is_directory =
+ (stat(dir->dir_entry->filename, &file_status) == 0 &&
+ S_ISDIR(file_status.st_mode));
+
+ return dir->dir_entry;
+}
+
+void freeDirectoryEntry(DirectoryEntry *dir_entry)
+{
+ if (dir_entry == NULL)
+ return;
+
+ checked_free(dir_entry->basename);
+ checked_free(dir_entry->filename);
+ checked_free(dir_entry);
+}
+
+
+// ----------------------------------------------------------------------------
+// functions for checking files and filenames
+// ----------------------------------------------------------------------------
+
+boolean directoryExists(char *dir_name)
+{
+ if (dir_name == NULL)
+ return FALSE;
+
+ struct stat file_status;
+ boolean success = (stat(dir_name, &file_status) == 0 &&
+ S_ISDIR(file_status.st_mode));
+
+#if defined(PLATFORM_ANDROID)
+ if (!success)
+ {
+ // this might be an asset directory; check by trying to open toc file
+ char *asset_toc_filename = getPath2(dir_name, ASSET_TOC_BASENAME);
+ SDL_RWops *file = SDL_RWFromFile(asset_toc_filename, MODE_READ);
+
+ checked_free(asset_toc_filename);
+
+ success = (file != NULL);
+
+ if (success)
+ SDL_RWclose(file);
+ }
+#endif
+
+ return success;
+}