1 files changed, 153 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/java/util/regex/REFilterInputStream.java b/gcc-4.4.3/libjava/classpath/gnu/java/util/regex/REFilterInputStream.java
new file mode 100644
index 000000000..c7acb714a
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+++ b/gcc-4.4.3/libjava/classpath/gnu/java/util/regex/REFilterInputStream.java
@@ -0,0 +1,153 @@
+/* gnu/regexp/REFilterInputStream.java
+   Copyright (C) 1998-2001, 2004 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.java.util.regex;
+import java.io.FilterInputStream;
+import java.io.InputStream;
+
+/**
+ * Replaces instances of a given RE found within an InputStream
+ * with replacement text.   The replacements are interpolated into the
+ * stream when a match is found.
+ *
+ * @author <A HREF="mailto:wes@cacas.org">Wes Biggs</A>
+ * @deprecated This class cannot properly handle all character
+ *             encodings.  For proper handling, use the REFilterReader
+ *             class instead.
+ */
+
+public class REFilterInputStream extends FilterInputStream
+{
+
+  private RE expr;
+  private String replace;
+  private String buffer;
+  private int bufpos;
+  private int offset;
+  private CharIndexedInputStream stream;
+
+  /**
+   * Creates an REFilterInputStream.  When reading from this stream,
+   * occurrences of patterns matching the supplied regular expression
+   * will be replaced with the supplied replacement text (the
+   * metacharacters $0 through $9 may be used to refer to the full
+   * match or subexpression matches).
+   *
+   * @param stream The InputStream to be filtered.
+   * @param expr The regular expression to search for.
+   * @param replace The text pattern to replace matches with.  
+   */
+  public REFilterInputStream (InputStream stream, RE expr, String replace)
+  {
+    super (stream);
+    this.stream = new CharIndexedInputStream (stream, 0);
+    this.expr = expr;
+    this.replace = replace;
+  }
+
+  /**
+   * Reads the next byte from the stream per the general contract of
+   * InputStream.read().  Returns -1 on error or end of stream.
+   */
+  public int read ()
+  {
+    // If we have buffered replace data, use it.
+    if ((buffer != null) && (bufpos < buffer.length ()))
+      {
+	return (int) buffer.charAt (bufpos++);
+      }
+
+    // check if input is at a valid position
+    if (!stream.isValid ())
+      return -1;
+
+    REMatch mymatch = new REMatch (expr.getNumSubs (), offset, 0);
+    if (expr.match (stream, mymatch))
+      {
+	mymatch.end[0] = mymatch.index;
+	mymatch.finish (stream);
+	stream.move (mymatch.toString ().length ());
+	offset += mymatch.toString ().length ();
+	buffer = mymatch.substituteInto (replace);
+	bufpos = 1;
+
+	// This is prone to infinite loops if replace string turns out empty.
+	if (buffer.length () > 0)
+	  {
+	    return buffer.charAt (0);
+	  }
+      }
+    char ch = stream.charAt (0);
+    if (ch == CharIndexed.OUT_OF_BOUNDS)
+      return -1;
+    stream.move (1);
+    offset++;
+    return ch;
+  }
+
+  /** 
+   * Returns false.  REFilterInputStream does not support mark() and
+   * reset() methods. 
+   */
+  public boolean markSupported ()
+  {
+    return false;
+  }
+
+  /** Reads from the stream into the provided array. */
+  public int read (byte[]b, int off, int len)
+  {
+    int i;
+    int ok = 0;
+    while (len-- > 0)
+      {
+	i = read ();
+	if (i == -1)
+	  return (ok == 0) ? -1 : ok;
+	b[off++] = (byte) i;
+	ok++;
+      }
+    return ok;
+  }
+
+  /** Reads from the stream into the provided array. */
+  public int read (byte[]b)
+  {
+    return read (b, 0, b.length);
+  }
+}