public boolean exists() {
try {
return LocalStorage.getItem(getCanonicalPath()) != null;
} catch (IOException e) {
return false;
}
}
public boolean isFile() {
try {
String s = LocalStorage.getItem(getCanonicalPath());
return s != null && !s.startsWith("{");
} catch (IOException e) {
return false;
}
}
public boolean delete() {
try {
if (!exists()) {
return false;
}
LocalStorage.removeItem(getCanonicalPath());
return true;
} catch (IOException e) {
return false;
}
}
public boolean mkdir() {
try {
if (parent != null && !parent.exists()) {
return false;
}
if (exists()) {
return false;
}
// We may want to make this a JS map
LocalStorage.setItem(getCanonicalPath(), "{}");
return true;
} catch (IOException e) {
return false;
}
}
public File[] listFiles(FilenameFilter filter) {
ArrayList<File> files = new ArrayList<File>();
try {
String prefix = getCanonicalPath();
if (!prefix.endsWith(separator)) {
prefix += separatorChar;
}
int cut = prefix.length();
int cnt = LocalStorage.length();
for (int i = 0; i < cnt; i++) {
String key = LocalStorage.key(i);
if (key.startsWith(prefix) && key.indexOf(separatorChar, cut) == -1) {
String name = key.substring(cut);
if (filter == null || filter.accept(this, name)) {
files.add(new File(this, name));
}
}
}
} catch (IOException e) {
System.err.println("lisFiles() exception: " + e);
}
return files.toArray(new File[files.size()]);
}
public boolean createNewFile() throws IOException {
if (exists()) return false;
if (!parent.exists()) return false;
LocalStorage.setItem(getCanonicalPath(), RandomAccessFile.btoa(""));
return true;
}