| /* |
| * reserved comment block |
| * DO NOT REMOVE OR ALTER! |
| */ |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.sun.org.apache.xerces.internal.impl.xpath.regex; |
| |
| import java.text.CharacterIterator; |
| |
| /** |
| * An instance of this class has ranges captured in matching. |
| * |
| * @xerces.internal |
| * |
| * @see RegularExpression#matches(char[], int, int, Match) |
| * @see RegularExpression#matches(char[], Match) |
| * @see RegularExpression#matches(java.text.CharacterIterator, Match) |
| * @see RegularExpression#matches(java.lang.String, int, int, Match) |
| * @see RegularExpression#matches(java.lang.String, Match) |
| * @author TAMURA Kent <kent@trl.ibm.co.jp> |
| */ |
| public class Match implements Cloneable { |
| int[] beginpos = null; |
| int[] endpos = null; |
| int nofgroups = 0; |
| |
| CharacterIterator ciSource = null; |
| String strSource = null; |
| char[] charSource = null; |
| |
| /** |
| * Creates an instance. |
| */ |
| public Match() { |
| } |
| |
| /** |
| * |
| */ |
| public synchronized Object clone() { |
| Match ma = new Match(); |
| if (this.nofgroups > 0) { |
| ma.setNumberOfGroups(this.nofgroups); |
| if (this.ciSource != null) ma.setSource(this.ciSource); |
| if (this.strSource != null) ma.setSource(this.strSource); |
| for (int i = 0; i < this.nofgroups; i ++) { |
| ma.setBeginning(i, this.getBeginning(i)); |
| ma.setEnd(i, this.getEnd(i)); |
| } |
| } |
| return ma; |
| } |
| |
| /** |
| * |
| */ |
| protected void setNumberOfGroups(int n) { |
| int oldn = this.nofgroups; |
| this.nofgroups = n; |
| if (oldn <= 0 |
| || oldn < n || n*2 < oldn) { |
| this.beginpos = new int[n]; |
| this.endpos = new int[n]; |
| } |
| for (int i = 0; i < n; i ++) { |
| this.beginpos[i] = -1; |
| this.endpos[i] = -1; |
| } |
| } |
| |
| /** |
| * |
| */ |
| protected void setSource(CharacterIterator ci) { |
| this.ciSource = ci; |
| this.strSource = null; |
| this.charSource = null; |
| } |
| /** |
| * |
| */ |
| protected void setSource(String str) { |
| this.ciSource = null; |
| this.strSource = str; |
| this.charSource = null; |
| } |
| /** |
| * |
| */ |
| protected void setSource(char[] chars) { |
| this.ciSource = null; |
| this.strSource = null; |
| this.charSource = chars; |
| } |
| |
| /** |
| * |
| */ |
| protected void setBeginning(int index, int v) { |
| this.beginpos[index] = v; |
| } |
| |
| /** |
| * |
| */ |
| protected void setEnd(int index, int v) { |
| this.endpos[index] = v; |
| } |
| |
| /** |
| * Return the number of regular expression groups. |
| * This method returns 1 when the regular expression has no capturing-parenthesis. |
| */ |
| public int getNumberOfGroups() { |
| if (this.nofgroups <= 0) |
| throw new IllegalStateException("A result is not set."); |
| return this.nofgroups; |
| } |
| |
| /** |
| * Return a start position in the target text matched to specified regular expression group. |
| * |
| * @param index Less than <code>getNumberOfGroups()</code>. |
| */ |
| public int getBeginning(int index) { |
| if (this.beginpos == null) |
| throw new IllegalStateException("A result is not set."); |
| if (index < 0 || this.nofgroups <= index) |
| throw new IllegalArgumentException("The parameter must be less than " |
| +this.nofgroups+": "+index); |
| return this.beginpos[index]; |
| } |
| |
| /** |
| * Return an end position in the target text matched to specified regular expression group. |
| * |
| * @param index Less than <code>getNumberOfGroups()</code>. |
| */ |
| public int getEnd(int index) { |
| if (this.endpos == null) |
| throw new IllegalStateException("A result is not set."); |
| if (index < 0 || this.nofgroups <= index) |
| throw new IllegalArgumentException("The parameter must be less than " |
| +this.nofgroups+": "+index); |
| return this.endpos[index]; |
| } |
| |
| /** |
| * Return an substring of the target text matched to specified regular expression group. |
| * |
| * @param index Less than <code>getNumberOfGroups()</code>. |
| */ |
| public String getCapturedText(int index) { |
| if (this.beginpos == null) |
| throw new IllegalStateException("match() has never been called."); |
| if (index < 0 || this.nofgroups <= index) |
| throw new IllegalArgumentException("The parameter must be less than " |
| +this.nofgroups+": "+index); |
| String ret; |
| int begin = this.beginpos[index], end = this.endpos[index]; |
| if (begin < 0 || end < 0) return null; |
| if (this.ciSource != null) { |
| ret = REUtil.substring(this.ciSource, begin, end); |
| } else if (this.strSource != null) { |
| ret = this.strSource.substring(begin, end); |
| } else { |
| ret = new String(this.charSource, begin, end-begin); |
| } |
| return ret; |
| } |
| } |