1 files changed, 180 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/xml/stream/CRLFReader.java b/libjava/classpath/gnu/xml/stream/CRLFReader.java
new file mode 100644
index 000000000..7f3cf4d74
--- /dev/null
+++ b/libjava/classpath/gnu/xml/stream/CRLFReader.java
@@ -0,0 +1,180 @@
+/* CRLFReader.java --
+   Copyright (C) 2005,2006  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.BufferedReader;
+import java.io.IOException;
+import java.io.Reader;
+
+/**
+ * Filtered reader that normalizes CRLF pairs into LFs.
+ *
+ * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
+ */
+class CRLFReader
+  extends Reader
+{
+
+  /**
+   * The CR octet.
+   */
+  public static final int CR = 13;
+
+  /**
+   * The LF octet.
+   */
+  public static final int LF = 10;
+
+  private boolean doReset;
+
+  protected Reader in;
+
+  /**
+   * Constructor.
+   */
+  protected CRLFReader(Reader in)
+  {
+    if (!in.markSupported())
+      in = new BufferedReader(in);
+    this.in = in;
+  }
+
+  public int read()
+    throws IOException
+  {
+    int c = in.read();
+    if (c == 13) // CR
+      {
+        in.mark(1);
+        int d = in.read();
+        if (d == 10) // LF
+          c = d;
+        else
+          in.reset();
+      }
+    return c;
+  }
+
+  public int read(char[] b)
+    throws IOException
+  {
+    return read(b, 0, b.length);
+  }
+
+  public int read(char[] b, int off, int len)
+    throws IOException
+  {
+    in.mark(len + 1);
+    int l = in.read(b, off, len);
+    if (l > 0)
+      {
+        int i = indexOfCRLF(b, off, l);
+        if (doReset)
+          {
+            in.reset();
+            if (i != -1)
+              {
+                l = in.read(b, off, (i + 1) - off); // read to CR
+                in.read(); // skip LF
+                b[i] = '\n'; // fix CR as LF
+              }
+            else
+              l = in.read(b, off, len); // CR(s) but no LF
+          }
+      }
+    return l;
+  }
+
+  public boolean markSupported()
+  {
+    return in.markSupported();
+  }
+
+  public void mark(int limit)
+    throws IOException
+  {
+    in.mark(limit);
+  }
+
+  public void reset()
+    throws IOException
+  {
+    in.reset();
+  }
+
+  public long skip(long n)
+    throws IOException
+  {
+    return in.skip(n);
+  }
+
+  public void close()
+    throws IOException
+  {
+    in.close();
+  }
+
+  private int indexOfCRLF(char[] b, int off, int len)
+    throws IOException
+  {
+    doReset = false;
+    int end = off + len;
+    int em1 = end - 1;
+    for (int i = off; i < end; i++)
+      {
+        if (b[i] == '\r') // CR
+          {
+            int d;
+            if (i == em1)
+              {
+                d = in.read();
+                doReset = true;
+              }
+            else
+              d = b[i + 1];
+            if (d == '\n') // LF
+              {
+                doReset = true;
+                return i;
+              }
+          }
+      }
+    return -1;
+  }
+
+}