Added apps/q - the Q distributed file store framework, by aum

apps/q/java/src/net/i2p/aum/SimpleFile.java

@@ -0,0 +1,120 @@
+package net.i2p.aum;
+
+import java.lang.*;
+import java.io.*;
+import java.util.*;
+import java.net.*;
+
+import net.i2p.data.*;
+
+/**
+ * SimpleFile - subclass of File which adds some python-like
+ * methods. Cuts out a lot of the red tape involved with reading
+ * from and writing to files
+ */
+public class SimpleFile {
+
+    public RandomAccessFile _file;
+    public String _path;
+
+    public SimpleFile(String path, String mode) throws FileNotFoundException {
+
+        _path = path;
+        _file = new RandomAccessFile(path, mode);
+    }
+    
+    public byte [] readBytes() throws IOException {
+        return readBytes((int)_file.length());
+    }
+
+    public byte[] readBytes(int n) throws IOException {
+        byte [] buf = new byte[n];
+        _file.readFully(buf);
+        return buf;
+    }
+
+    public char [] readChars() throws IOException {
+        return readChars((int)_file.length());
+    }
+
+    public char[] readChars(int n) throws IOException {
+        char [] buf = new char[n];
+        //_file.readFully(buf);
+        return buf;
+    }
+
+    /**
+     * Reads all remaining content from the file
+     * @return the content as a String
+     * @throws IOException
+     */
+    public String read() throws IOException {
+
+        return read((int)_file.length());
+    }
+    
+    /**
+     * Reads one or more bytes of data from the file
+     * @return the content as a String
+     * @throws IOException
+     */
+    public String read(int nbytes) throws IOException {
+    
+        return new String(readBytes(nbytes));
+    }
+    
+    /**
+     * Writes one or more bytes of data to a file
+     * @param buf a String containing the data to write
+     * @return the number of bytes written, as an int
+     * @throws IOException
+     */
+    public int write(String buf) throws IOException {
+
+        return write(buf.getBytes());
+    }
+
+    public int write(byte [] buf) throws IOException {
+
+        _file.write(buf);
+        return buf.length;
+    }
+
+    /**
+     * convenient one-hit write
+     * @param path pathname of file to write to
+     * @param buf data to write
+     */
+    public static int write(String path, String buf) throws IOException {
+        return new SimpleFile(path, "rws").write(buf);
+    }
+
+    /**
+     * tests if argument refers to an actual file
+     * @param path pathname to test
+     * @return true if a file, false if not
+     */
+    public boolean isFile() {
+        return new File(_path).isFile();
+    }
+    
+    /**
+     * tests if argument refers to a directory
+     * @param path pathname to test
+     * @return true if a directory, false if not
+     */
+    public boolean isDir() {
+        return new File(_path).isDirectory();
+    }
+    
+    /**
+     * tests if a file or directory exists
+     * @param path pathname to test
+     * @return true if exists, or false
+     */
+    public boolean exists() {
+        return new File(_path).exists();
+    }
+    
+}
+