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Diffstat (limited to 'libjava/gnu/regexp/REFilterInputStream.java')
-rw-r--r-- | libjava/gnu/regexp/REFilterInputStream.java | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/libjava/gnu/regexp/REFilterInputStream.java b/libjava/gnu/regexp/REFilterInputStream.java deleted file mode 100644 index f56a9a2a9cb..00000000000 --- a/libjava/gnu/regexp/REFilterInputStream.java +++ /dev/null @@ -1,140 +0,0 @@ -/* 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., 59 Temple Place, Suite 330, Boston, MA -02111-1307 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.regexp; -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); - } -} |