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JVM AOT compiler currently generating JavaScript, C++, Haxe, with initial focus on Kotlin and games.
/*
* Copyright 2016 Carlos Ballesteros Velasco
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package java.io;
import com.jtransc.JTranscSystemProperties;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;
public class File implements Serializable, Comparable {
private static final FileSystem fs = new JTranscFileSystem();
private final String path;
private enum PathStatus {INVALID, CHECKED}
private transient PathStatus status = null;
final boolean isInvalid() {
if (status == null) status = (this.path.indexOf('\u0000') < 0) ? PathStatus.CHECKED : PathStatus.INVALID;
return status == PathStatus.INVALID;
}
private final transient int prefixLength;
int getPrefixLength() {
return prefixLength;
}
public static final char separatorChar = fs.getSeparator();
public static final String separator = "" + separatorChar;
public static final char pathSeparatorChar = fs.getPathSeparator();
public static final String pathSeparator = "" + pathSeparatorChar;
private File(String pathname, int prefixLength) {
this.path = pathname;
this.prefixLength = prefixLength;
}
private File(String child, File parent) {
assert parent.path != null;
assert (!parent.path.equals(""));
this.path = fs.resolve(parent.path, child);
this.prefixLength = parent.prefixLength;
}
public File(String pathname) {
if (pathname == null) throw new NullPointerException();
this.path = fs.normalize(pathname);
this.prefixLength = fs.prefixLength(this.path);
}
public File(String parent, String child) {
if (child == null) throw new NullPointerException();
if (parent != null) {
this.path = fs.resolve(parent.equals("") ? fs.getDefaultParent() : fs.normalize(parent), fs.normalize(child));
} else {
this.path = fs.normalize(child);
}
this.prefixLength = fs.prefixLength(this.path);
}
public File(File parent, String child) {
if (child == null) throw new NullPointerException();
if (parent != null) {
this.path = fs.resolve(parent.path.equals("") ? fs.getDefaultParent() : parent.path, fs.normalize(child));
} else {
this.path = fs.normalize(child);
}
this.prefixLength = fs.prefixLength(this.path);
}
public File(URI uri) {
if (!uri.isAbsolute()) throw new IllegalArgumentException("URI is not absolute");
if (uri.isOpaque()) throw new IllegalArgumentException("URI is not hierarchical");
String scheme = uri.getScheme();
if ((scheme == null) || !scheme.equalsIgnoreCase("file"))
throw new IllegalArgumentException("URI scheme is not \"file\"");
if (uri.getAuthority() != null) throw new IllegalArgumentException("URI has an authority component");
if (uri.getFragment() != null) throw new IllegalArgumentException("URI has a fragment component");
if (uri.getQuery() != null) throw new IllegalArgumentException("URI has a query component");
String p = uri.getPath();
if (p.equals("")) throw new IllegalArgumentException("URI path component is empty");
p = fs.fromURIPath(p);
if (File.separatorChar != '/') p = p.replace('/', File.separatorChar);
this.path = fs.normalize(p);
this.prefixLength = fs.prefixLength(this.path);
}
public String getName() {
int index = path.lastIndexOf(separatorChar);
if (index < prefixLength) return path.substring(prefixLength);
return path.substring(index + 1);
}
public String getParent() {
int index = path.lastIndexOf(separatorChar);
if (index < prefixLength) {
if ((prefixLength > 0) && (path.length() > prefixLength)) return path.substring(0, prefixLength);
return null;
}
return path.substring(0, index);
}
public File getParentFile() {
String p = this.getParent();
if (p == null) return null;
return new File(p, this.prefixLength);
}
public String getPath() {
return path;
}
public boolean isAbsolute() {
return fs.isAbsolute(this);
}
public String getAbsolutePath() {
return fs.resolve(this);
}
public File getAbsoluteFile() {
String absPath = getAbsolutePath();
return new File(absPath, fs.prefixLength(absPath));
}
public String getCanonicalPath() throws IOException {
if (isInvalid()) throw new IOException("Invalid file path");
return fs.canonicalize(fs.resolve(this));
}
public File getCanonicalFile() throws IOException {
String canonPath = getCanonicalPath();
return new File(canonPath, fs.prefixLength(canonPath));
}
private static String slashify(String path, boolean isDirectory) {
String p = path;
if (File.separatorChar != '/') p = p.replace(File.separatorChar, '/');
if (!p.startsWith("/")) p = "/" + p;
if (!p.endsWith("/") && isDirectory) p = p + "/";
return p;
}
@Deprecated
public URL toURL() throws MalformedURLException {
if (isInvalid()) throw new MalformedURLException("Invalid file path");
return new URL("file", "", slashify(getAbsolutePath(), isDirectory()));
}
public URI toURI() {
try {
File f = getAbsoluteFile();
String sp = slashify(f.getPath(), f.isDirectory());
if (sp.startsWith("//")) sp = "//" + sp;
return new URI("file", null, sp, null);
} catch (URISyntaxException x) {
throw new Error(x);
}
}
public boolean canRead() {
if (isInvalid()) return false;
return fs.checkAccess(this, FileSystem.ACCESS_READ);
}
public boolean canWrite() {
if (isInvalid()) return false;
return fs.checkAccess(this, FileSystem.ACCESS_WRITE);
}
public boolean exists() {
if (isInvalid()) return false;
return ((fs.getBooleanAttributes(this) & FileSystem.BA_EXISTS) != 0);
}
public boolean isDirectory() {
if (isInvalid()) return false;
return ((fs.getBooleanAttributes(this) & FileSystem.BA_DIRECTORY) != 0);
}
public boolean isFile() {
if (isInvalid()) return false;
return ((fs.getBooleanAttributes(this) & FileSystem.BA_REGULAR) != 0);
}
public boolean isHidden() {
if (isInvalid()) return false;
return ((fs.getBooleanAttributes(this) & FileSystem.BA_HIDDEN) != 0);
}
public long lastModified() {
if (isInvalid()) return 0L;
return fs.getLastModifiedTime(this);
}
public long length() {
if (isInvalid()) return 0L;
return fs.getLength(this);
}
public boolean createNewFile() throws IOException {
if (isInvalid()) throw new IOException("Invalid file path");
return fs.createFileExclusively(path);
}
public boolean delete() {
if (isInvalid()) return false;
return fs.delete(this);
}
native public void deleteOnExit();
public String[] list() {
if (isInvalid()) return null;
return fs.list(this);
}
public String[] list(FilenameFilter filter) {
String names[] = list();
if ((names == null) || (filter == null)) {
return names;
}
List v = new ArrayList();
for (int i = 0; i < names.length; i++) {
if (filter.accept(this, names[i])) {
v.add(names[i]);
}
}
return v.toArray(new String[v.size()]);
}
public File[] listFiles() {
String[] ss = list();
if (ss == null) return null;
int n = ss.length;
File[] fs = new File[n];
for (int i = 0; i < n; i++) {
fs[i] = new File(ss[i], this);
}
return fs;
}
public File[] listFiles(FilenameFilter filter) {
String ss[] = list();
if (ss == null) return null;
ArrayList files = new ArrayList();
for (String s : ss)
if ((filter == null) || filter.accept(this, s))
files.add(new File(s, this));
return files.toArray(new File[files.size()]);
}
public File[] listFiles(FileFilter filter) {
String ss[] = list();
if (ss == null) return null;
ArrayList files = new ArrayList();
for (String s : ss) {
File f = new File(s, this);
if ((filter == null) || filter.accept(f))
files.add(f);
}
return files.toArray(new File[files.size()]);
}
public boolean mkdir() {
if (isInvalid()) return false;
return fs.createDirectory(this);
}
public boolean mkdirs() {
if (exists()) return false;
if (mkdir()) return true;
File canonFile = null;
try {
canonFile = getCanonicalFile();
} catch (IOException e) {
return false;
}
File parent = canonFile.getParentFile();
return (parent != null && (parent.mkdirs() || parent.exists()) && canonFile.mkdir());
}
public boolean renameTo(File dest) {
if (dest == null) throw new NullPointerException();
if (this.isInvalid() || dest.isInvalid()) return false;
return fs.rename(this, dest);
}
public boolean setLastModified(long time) {
if (time < 0) throw new IllegalArgumentException("Negative time");
if (isInvalid()) return false;
return fs.setLastModifiedTime(this, time);
}
public boolean setReadOnly() {
if (isInvalid()) return false;
return fs.setReadOnly(this);
}
public boolean setWritable(boolean writable, boolean ownerOnly) {
if (isInvalid()) return false;
return fs.setPermission(this, FileSystem.ACCESS_WRITE, writable, ownerOnly);
}
public boolean setWritable(boolean writable) {
return setWritable(writable, true);
}
public boolean setReadable(boolean readable, boolean ownerOnly) {
if (isInvalid()) return false;
return fs.setPermission(this, FileSystem.ACCESS_READ, readable, ownerOnly);
}
public boolean setReadable(boolean readable) {
return setReadable(readable, true);
}
public boolean setExecutable(boolean executable, boolean ownerOnly) {
if (isInvalid()) return false;
return fs.setPermission(this, FileSystem.ACCESS_EXECUTE, executable, ownerOnly);
}
public boolean setExecutable(boolean executable) {
return setExecutable(executable, true);
}
public boolean canExecute() {
if (isInvalid()) return false;
return fs.checkAccess(this, FileSystem.ACCESS_EXECUTE);
}
public static File[] listRoots() {
return fs.listRoots();
}
public long getTotalSpace() {
if (isInvalid()) return 0L;
return fs.getSpace(this, FileSystem.SPACE_TOTAL);
}
public long getFreeSpace() {
if (isInvalid()) return 0L;
return fs.getSpace(this, FileSystem.SPACE_FREE);
}
public long getUsableSpace() {
if (isInvalid()) return 0L;
return fs.getSpace(this, FileSystem.SPACE_USABLE);
}
private static class TempDirectory {
private TempDirectory() {
}
private static final File tmpdir = new File(JTranscSystemProperties.tmpdir());
static File location() {
return tmpdir;
}
static native File generateFile(String prefix, String suffix, File dir) throws IOException;
}
public static File createTempFile(String prefix, String suffix, File directory) throws IOException {
if (prefix.length() < 3) throw new IllegalArgumentException("Prefix string too short");
if (suffix == null) suffix = ".tmp";
File tmpdir = (directory != null) ? directory : TempDirectory.location();
File f;
do {
f = TempDirectory.generateFile(prefix, suffix, tmpdir);
} while ((fs.getBooleanAttributes(f) & FileSystem.BA_EXISTS) != 0);
if (!fs.createFileExclusively(f.getPath())) throw new IOException("Unable to create temporary file");
return f;
}
public static File createTempFile(String prefix, String suffix) throws IOException {
return createTempFile(prefix, suffix, null);
}
public int compareTo(File pathname) {
return fs.compare(this, pathname);
}
public boolean equals(Object obj) {
if ((obj != null) && (obj instanceof File)) {
return compareTo((File) obj) == 0;
}
return false;
}
public int hashCode() {
return fs.hashCode(this);
}
public String toString() {
return getPath();
}
}