Initial revision

From-SVN: r26263

libjava/java/io/StringBufferInputStream.java

@@ -0,0 +1,83 @@
+/* Copyright (C) 1998, 1999  Cygnus Solutions
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+ 
+package java.io;
+
+/**
+ * @author Warren Levy <warrenl@cygnus.com>
+ * @date November 11, 1998.
+ * @deprecated 
+ */
+/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
+ * "The Java Language Specification", ISBN 0-201-63451-1
+ * plus online API docs for JDK 1.2 beta from http://www.javasoft.com.
+ * Status:  Believed complete and correct.  Deprecated in JDK 1.1.
+ */
+ 
+public class StringBufferInputStream extends InputStream
+{
+  /* The String which is the input to this stream. */
+  protected String buffer;
+
+  /* Position of the next byte in buffer to be read. */
+  protected int pos = 0;
+
+  /* The length of the String buffer. */
+  protected int count;
+
+  public StringBufferInputStream(String s)
+  {
+    buffer = s;
+    count = s.length();
+  }
+
+  public int available()
+  {
+    return count - pos;
+  }
+
+  public int read()
+  {
+    if (pos >= count)
+      return -1;	// EOF
+
+    return ((int) buffer.charAt(pos++)) & 0xFF;
+  }
+
+  public int read(byte[] b, int off, int len)
+  {
+    if (off < 0 || len < 0 || off + len > b.length)
+      throw new ArrayIndexOutOfBoundsException();
+
+    if (pos >= count)
+      return -1;	// EOF
+
+    int numRead = Math.min(len, count - pos);
+    if (numRead < 0)
+      return 0;
+
+    buffer.getBytes(pos, pos + numRead, b, off);
+    pos += numRead;
+    return numRead;
+  }
+
+  public void reset()
+  {
+    pos = 0;
+  }
+
+  public long skip(long n)
+  {
+    if (n < 0)
+      return 0L;
+
+    long actualSkip = Math.min(n, count - pos);
+    pos += actualSkip;
+    return actualSkip;
+  }
+}