abstract RandomAccessFile _truncatedRandomAccessFile(File f, String mode) throws IOException;
public static RandomAccessFile truncatedRandomAccessFile(File f, String mode) throws IOException { return p._truncatedRandomAccessFile(f,mode); }
+ abstract File[] _listRoots();
+ public static File[] listRoots() { return p._listRoots(); }
+
+ abstract File _getRoot(File f);
+ public static File getRoot(File f) { return p._getRoot(f); }
+
static class Jdk11 extends Platform {
boolean _atomicCreateFile(File f) throws IOException {
// This is not atomic, but its the best we can do on jdk 1.1
new FileOutputStream(f).close();
return new RandomAccessFile(f,mode);
}
+
+ File[] _listRoots() {
+ String[] rootProps = new String[]{"java.home","java.class.path","java.library.path","java.io.tmpdir","java.ext.dirs","user.home","user.dir" };
+ Hashtable known = new Hashtable();
+ for(int i=0;i<rootProps.length;i++) {
+ String prop = getProperty(rootProps[i]);
+ if(prop == null) continue;
+ for(;;) {
+ String path = prop;
+ int p;
+ if((p = prop.indexOf(File.pathSeparatorChar)) != -1) {
+ path = prop.substring(0,p);
+ prop = prop.substring(p+1);
+ }
+ File root = getRoot(new File(path));
+ //System.err.println(rootProps[i] + ": " + path + " -> " + root);
+ known.put(root,Boolean.TRUE);
+ if(p == -1) break;
+ }
+ }
+ File[] ret = new File[known.size()];
+ int i=0;
+ for(Enumeration e = known.keys();e.hasMoreElements();)
+ ret[i++] = (File) e.nextElement();
+ return ret;
+ }
+
+ File _getRoot(File f) {
+ if(!f.isAbsolute()) f = new File(f.getAbsolutePath());
+ String p;
+ while((p = f.getParent()) != null) f = new File(p);
+ if(f.getPath().length() == 0) f = new File("/"); // work around a classpath bug
+ return f;
+ }
}
static class Jdk12 extends Jdk11 {
RandomAccessFile raf = new RandomAccessFile(f,mode);
raf.setLength(0);
return raf;
- }
+ }
+
+ File[] _listRoots() { return File.listRoots(); }
}
static class Jdk13 extends Jdk12 {