/*
* Loads the list of files.
*/
private static FileSystem loadFiles(Map<String, Class<? extends ExecutableFile>> exes) {
FileSystem tempFileSystem = new FileSystem(new Directory(0, ""));
try {
DATFileReader reader = new DATFileReader(FILES_PATH);
reader.setCommentChar('#');
reader.ignoreWhitespaces(true);
// Read file line by line
while (reader.loadNextLine()) {
// Read data from current line
int id = Integer.parseInt(reader.nextField());
String fileName = reader.nextField();
boolean isHidden = Boolean.parseBoolean(reader.nextField());
String resourceName = reader.nextField();
String aliasIDStr = "";
if (reader.hasNextField()) {
aliasIDStr = reader.nextField();
}
File f;
if (!aliasIDStr.isEmpty()) {
// Resolve alias target if the file is an alias
f = new File(id, fileName);
int aliasID = Integer.parseInt(aliasIDStr);
File aliasTarget = (File) tempFileSystem.getFileSystemObject(aliasID);
f.markAsAlias(aliasTarget);
} else if (id > 100 && id < 200) {
// Match file to an ExecurableFile subclass
Class<? extends ExecutableFile> clazz = exes.get(fileName);
if (clazz == null) {
Logger.error("Unresolved executable: %s (id: %d)\n", fileName, id);
continue;
}
// Create instance of subclass
Constructor<? extends ExecutableFile> constructor = clazz.getConstructor(int.class);
f = constructor.newInstance(id);
} else if (id > 300 && id < 400) {
// Load file as a text file
f = new TextFile(id, fileName, resourceName);
} else if (id > 400 && id < 500) {
// Load file as an image file
f = new ImageFile(id, fileName, resourceName);
} else if (id > 500 && id < 600) {
// Load file as a sound file
f = new SoundFile(id, fileName, resourceName);
} else {
// Load generic file
f = new File(id, fileName);
}
f.setHidden(isHidden);
// Add file to temporay filesystem
tempFileSystem.getRoot().addChild(f);
Logger.info(
"Loaded file: %s (id: %d%s)\n",
fileName, id, resourceName.isEmpty() ? "" : ", resource: " + resourceName);
}
} catch (IOException ex) {
Logger.stackTrace(ex);
showConfigFileErrorMessage(ex);
} catch (InstantiationException | IllegalAccessException ex) {
throw new RuntimeException(ex);
} catch (NoSuchMethodException | SecurityException ex) {
throw new RuntimeException(ex);
} catch (IllegalArgumentException | InvocationTargetException ex) {
throw new RuntimeException(ex);
}
return tempFileSystem;
}
/**
* Loads the filesystem configuration.
*
* @param exes a Map containing classes representing executable files and their corresponding
* names
*/
public static void loadFileSystemConfiguration(
Map<String, Class<? extends ExecutableFile>> exes) {
/* Load files into temporary filesystem. The temporary filesytem is used
to access files while the actual filesystem is being built.
*/
FileSystem tempFileSystem = loadFiles(exes);
try {
DATFileReader reader = new DATFileReader(FILESYSTEM_PATH);
reader.setCommentChar('#');
reader.ignoreWhitespaces(true);
// Read file line by line
while (reader.loadNextLine()) {
// Read data from current line
int id = Integer.parseInt(reader.nextField());
String systemName = reader.nextField();
String dirName = reader.nextField();
int parentID = Integer.parseInt(reader.nextField());
String files = "";
if (reader.hasNextField()) {
files = reader.nextField();
}
Server system = Terminal.getServer(systemName);
Directory dir;
if (parentID == -1 || (id > 600 && id < 700)) {
// Load directory, set it as root on the current system
dir = new Directory(id, dirName);
system.setFileSystem(new FileSystem(dir));
} else if (id > 800 && id < 900) {
// Load directory as as user's home directory
dir = new HomeDirectory(id, dirName);
} else {
// Load generic directory
dir = new Directory(id, dirName);
}
/* Place the directory in the correct location in the filesystem
tree
*/
FileSystemObject parent = system.getFileSystem().getFileSystemObject(parentID);
if (parent != null) {
parent.addChild(dir);
}
// Populate directory with files (if it has any)
String[] fileIDList = files.split(" ");
for (String fileIDStr : fileIDList) {
if (fileIDStr.isEmpty()) {
continue;
}
int fileID = Integer.parseInt(fileIDStr);
// Get file from temporary filesystem based on file ID
File file = (File) tempFileSystem.getFileSystemObject(fileID);
if (file == null) {
Logger.error(
"Unresolved file ID: %d " + "(dir: %s, system: %s)\n", fileID, dirName, systemName);
continue;
}
// Place the file in the directory
dir.addChild(file);
}
Logger.info(
"Loaded directory: %s (system: %s, id: ID)\n",
dirName.isEmpty() ? "<no name, root?>" : dirName, systemName, id);
}
} catch (IOException ex) {
Logger.stackTrace(ex);
showConfigFileErrorMessage(ex);
}
}