X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=src%2Fgnu%2Fregexp%2FREFilterReader.java;fp=src%2Fgnu%2Fregexp%2FREFilterReader.java;h=0000000000000000000000000000000000000000;hb=4daeeb4119b901d53b44913c86f8af3ce67db925;hp=449efcc9b1c10beb4063d39a5779f790362f7259;hpb=da1f843588c8bd2b2c7cc74a5b4ffff8d57ab712;p=org.ibex.core.git diff --git a/src/gnu/regexp/REFilterReader.java b/src/gnu/regexp/REFilterReader.java deleted file mode 100644 index 449efcc..0000000 --- a/src/gnu/regexp/REFilterReader.java +++ /dev/null @@ -1,117 +0,0 @@ -/* - * gnu/regexp/REFilterReader.java - * Copyright (C) 2001 Lee Sau Dan - * Based on gnu.regexp.REFilterInputStream by Wes Biggs - * - * This library is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as published - * by the Free Software Foundation; either version 2.1 of the License, or - * (at your option) any later version. - * - * This library 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 Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - */ - -package gnu.regexp; -import java.io.FilterReader; -import java.io.Reader; - -/** - * Replaces instances of a given RE with replacement text. - * - * @author Lee Sau Dan - * @since gnu.regexp 1.1.0 - */ - -public class REFilterReader extends FilterReader { - - private RE expr; - private String replace; - private String buffer; - private int bufpos; - private int offset; - private CharIndexedReader stream; - - /** - * Creates an REFilterReader. 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 Reader to be filtered. - * @param expr The regular expression to search for. - * @param replace The text pattern to replace matches with. - */ - public REFilterReader(Reader stream, RE expr, String replace) { - super(stream); - this.stream = new CharIndexedReader(stream,0); - this.expr = expr; - this.replace = replace; - } - - /** - * Reads the next character from the stream per the general contract of - * Reader.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; - - 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. REFilterReader does not support mark() and - * reset() methods. - */ - public boolean markSupported() { - return false; - } - - /** Reads from the stream into the provided array. */ - public int read(char[] 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++] = (char) i; - ok++; - } - return ok; - } - - /** Reads from the stream into the provided array. */ - public int read(char[] b) { - return read(b,0,b.length); - } -}