classpath progress

classpath/java/io/BufferedReader.java

@@ -20,6 +20,27 @@ public class BufferedReader extends Reader {
     limit = in.read(buffer);
   }
 
+  public String readLine() throws IOException {
+    StringBuilder sb = new StringBuilder();
+    while (true) {
+      if (position >= limit) {
+        fill();
+      }
+
+      if (position >= limit) {
+        return sb.toString();
+      }
+
+      for (int i = position; i < limit; ++i) {
+        if (buffer[i] == '\n') {
+          sb.append(buffer, position, i);
+          position = i + 1;
+          return sb.toString();
+        }
+      }
+    }
+  }
+
   public int read(char[] b, int offset, int length) throws IOException {
     int count = 0;
 

classpath/java/io/PrintStream.java

@@ -19,7 +19,6 @@ public class PrintStream extends OutputStream {
   public synchronized void print(String s) {
     try {
       out.write(s.getBytes());
-      if (autoFlush) flush();
     } catch (IOException e) { }
   }
 

classpath/java/io/PrintWriter.java

@@ -19,7 +19,6 @@ public class PrintWriter extends Writer {
   public synchronized void print(String s) {
     try {
       out.write(s.toCharArray());
-      if (autoFlush) flush();
     } catch (IOException e) { }
   }
 

classpath/java/io/StringWriter.java

@@ -4,7 +4,7 @@ public class StringWriter extends Writer {
   private final StringBuilder out = new StringBuilder();
   
   public void write(char[] b, int offset, int length) throws IOException {
-    out.append(new String(b, offset, length));
+    out.append(b, offset, length);
   }
 
   public String toString() {

classpath/java/io/Writer.java

@@ -10,6 +10,16 @@ public abstract class Writer {
     write(buffer, 0, buffer.length);
   }
 
+  public void write(String s) throws IOException {
+    write(s.toCharArray());
+  }
+
+  public void write(String s, int offset, int length) throws IOException {
+    char[] b = new char[length];
+    s.getChars(offset, length, b, 0);
+    write(b);
+  }
+
   public abstract void write(char[] buffer, int offset, int length)
     throws IOException;
 

classpath/java/lang/String.java

@@ -173,7 +173,7 @@ public final class String implements Comparable<String> {
   public void getBytes(int srcOffset, int srcLength,
                        byte[] dst, int dstOffset)
   {
-    if (srcOffset + srcLength > length) {
+    if (srcOffset < 0 || srcOffset + srcLength > length) {
       throw new IndexOutOfBoundsException();
     }
 
@@ -197,7 +197,7 @@ public final class String implements Comparable<String> {
   public void getChars(int srcOffset, int srcLength,
                        char[] dst, int dstOffset)
   {
-    if (srcOffset + srcLength > length) {
+    if (srcOffset < 0 || srcOffset + srcLength > length) {
       throw new IndexOutOfBoundsException();
     }
 

classpath/java/lang/StringBuffer.java

@@ -23,10 +23,19 @@ public class StringBuffer {
     return this;
   }
 
+  public synchronized StringBuffer deleteCharAt(int i) {
+    sb.deleteCharAt(i);
+    return this;
+  }
+
   public synchronized int length() {
     return sb.length();
   }
 
+  public synchronized void setLength(int v) {
+    sb.setLength(v);
+  }
+
   public synchronized void getChars(int srcOffset, int srcLength, char[] dst,
                                     int dstOffset)
   {

classpath/java/lang/StringBuilder.java

@@ -5,11 +5,17 @@ public class StringBuilder {
   private int length;
 
   public StringBuilder append(String s) {
-    chain = new Cell(s, chain);
+    if (s.length() > 0) {
-    length += s.length();
+      chain = new Cell(s, chain);
+      length += s.length();
+    }
     return this;
   }
 
+  public StringBuilder append(char[] b, int offset, int length) {
+    return append(new String(b, offset, length));
+  }
+
   public StringBuilder append(Object o) {
     return append(o == null ? "null" : o.toString());
   }
@@ -22,13 +28,75 @@ public class StringBuilder {
     return append(String.valueOf(v));
   }
 
+  public StringBuilder deleteCharAt(int i) {
+    if (i < 0 || i >= length) {
+      throw new IndexOutOfBoundsException();
+    }
+
+    int index = length;
+    -- length;
+    Cell p = null;
+    for (Cell c = chain; c != null; c = c.next) {
+      int start = index - c.value.length();
+      index = start;
+      
+      if (i >= start) {
+        if (c.value.length() == 1) {
+          if (p == null) {
+            chain = c.next;
+          } else {
+            p.next = c.next;
+          }
+        } else if (i == start) {
+          c.value = c.value.substring(1);
+        } else if (i == start + c.value.length() - 1) {
+          c.value = c.value.substring(0, c.value.length() - 1);
+        } else {
+          c.value = c.value.substring(i + 1, c.value.length());
+          c.next = new Cell(c.value.substring(0, i), c.next);
+        }
+        break;
+      }
+    }
+
+    return this;
+  }
+
   public int length() {
     return length;
   }
 
+  public void setLength(int v) {
+    if (v < 0) {
+      throw new IndexOutOfBoundsException();
+    }
+
+    if (v == 0) {
+      length = 0;
+      chain = null;
+      return;
+    }
+
+    int index = length;
+    length = v;
+    for (Cell c = chain; c != null; c = c.next) {
+      int start = index - c.value.length();
+
+      if (v > start) {
+        if (v < index) {
+          c.value = c.value.substring(0, v - start);
+        }
+        break;
+      }
+
+      chain = c.next;
+      index = start;
+    }
+  }
+
   public void getChars(int srcOffset, int srcLength, char[] dst, int dstOffset)
   {
-    if (srcOffset + srcLength > length) {
+    if (srcOffset < 0 || srcOffset + srcLength > length) {
       throw new IndexOutOfBoundsException();
     }
 
@@ -60,8 +128,8 @@ public class StringBuilder {
   }
 
   private static class Cell {
-    public final String value;
+    public String value;
-    public final Cell next;
+    public Cell next;
 
     public Cell(String value, Cell next) {
       this.value = value;

classpath/java/lang/Throwable.java

@@ -2,6 +2,7 @@ package java.lang;
 
 import java.io.PrintStream;
 import java.io.PrintWriter;
+import java.io.IOException;
 
 public class Throwable {
   private String message;
@@ -49,12 +50,14 @@ public class Throwable {
     StringBuilder sb = new StringBuilder();
     printStackTrace(sb, System.getProperty("line.separator"));
     out.print(sb.toString());
+    try { out.flush(); } catch (IOException e) { }
   }
 
   public void printStackTrace(PrintWriter out) {
     StringBuilder sb = new StringBuilder();
     printStackTrace(sb, System.getProperty("line.separator"));
     out.print(sb.toString());
+    try { out.flush(); } catch (IOException e) { }
   }
 
   public void printStackTrace() {