Imported GNU Classpath 0.20

Imported GNU Classpath 0.20 * Makefile.am (AM_CPPFLAGS): Add classpath/include. * java/nio/charset/spi/CharsetProvider.java: New override file. * java/security/Security.java: Likewise. * sources.am: Regenerated. * Makefile.in: Likewise. From-SVN: r109831
2006-01-17 18:09:40 +00:00
parent bcb36c3e02
commit 2127637945
444 changed files with 75778 additions and 30731 deletions
@@ -0,0 +1,198 @@
+/* BufferedReader.java -- 
+   Copyright (C) 2005  Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.xml.stream;
+
+import java.io.IOException;
+import java.io.Reader;
+
+/**
+ * A mark-capable buffered reader.
+ *
+ * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
+ */
+class BufferedReader
+  extends Reader
+{
+
+  static final int DEFAULT_BUFFER_SIZE = 4096;
+
+  final Reader in;
+  char[] buf;
+  int pos, count, markpos, marklimit, bufferSize;
+
+  BufferedReader(Reader in)
+  {
+    this(in, DEFAULT_BUFFER_SIZE);
+  }
+         
+  BufferedReader(Reader in, int bufferSize)
+  {
+    if (bufferSize < 1)
+      throw new IllegalArgumentException();
+    this.in = in;
+    this.bufferSize = bufferSize;
+    buf = new char[bufferSize];
+    pos = count = bufferSize;
+  }
+
+  public void close()
+    throws IOException
+  {
+    buf = null;
+    pos = count = 0;
+    markpos = -1;
+    in.close();
+  }
+
+  public void mark(int readlimit)
+    throws IOException
+  {
+    marklimit = readlimit;
+    markpos = pos;
+  }
+
+  public boolean markSupported()
+  {
+    return true;
+  }
+
+  public int read()
+    throws IOException
+  {
+    if (pos >= count && !refill())
+      return -1;
+    return (int) buf[pos++];
+  }
+
+  public int read(char[] b)
+    throws IOException
+  {
+    return read(b, 0, b.length);
+  }
+
+  public int read(char[] b, int off, int len)
+    throws IOException
+  {
+    if (off < 0 || len < 0 || b.length - off < len)
+      throw new IndexOutOfBoundsException();
+    
+    if (len == 0)
+      return 0;
+    
+    if (pos >= count && !refill())
+      return -1;
+                
+    int ret = Math.min(count - pos, len);
+    System.arraycopy(buf, pos, b, off, ret);
+    pos += ret;
+    off += ret;
+    len -= ret;
+    
+    while (len > 0 && refill())
+      {
+        int remain = Math.min(count - pos, len);
+        System.arraycopy(buf, pos, b, off, remain);
+        pos += remain;
+        off += remain;
+        len -= remain;
+        ret += remain;
+      }
+    
+    return ret;
+  }
+
+  public void reset()
+    throws IOException
+  {
+    if (markpos == -1)
+      throw new IOException(buf == null ? "Stream closed." : "Invalid mark.");
+    pos = markpos;
+  }
+
+  public long skip(long n)
+    throws IOException
+  {
+    if (buf == null)
+      throw new IOException("Stream closed.");
+    final long origN = n;
+    while (n > 0L)
+      {
+        if (pos >= count && !refill())
+          break;
+        int numread = (int) Math.min((long) (count - pos), n);
+        pos += numread;
+        n -= numread;
+      }
+    return origN - n;
+  }
+
+  private boolean refill()
+    throws IOException
+  {
+    if (buf == null)
+      throw new IOException("Stream closed.");
+
+    int markcount = count - markpos;
+    if (markpos == -1 || markcount >= marklimit)
+      {
+        markpos = -1;
+        pos = count = 0;
+      }
+    else
+      {
+        char[] newbuf = buf;
+        if (markpos < bufferSize)
+          { 
+            newbuf = new char[count - markpos + bufferSize];
+          }
+        System.arraycopy(buf, markpos, newbuf, 0, markcount);
+        buf = newbuf;
+        count = markcount;
+        pos -= markpos;
+        markpos = 0;
+      }
+
+    int numread = in.read(buf, count, bufferSize);
+    if (numread <= 0)
+      return false;
+
+    count += numread;
+    return true;
+  }
+
+}