content: /*
   *  This file is part of AndroidIDE.
   *
   *  AndroidIDE 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 3 of the License, or
   *  (at your option) any later version.
   *
   *  AndroidIDE 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 AndroidIDE.  If not, see <https://www.gnu.org/licenses/>.
   */
  
  /*
   * reserved comment block
   * DO NOT REMOVE OR ALTER!
   */
  /*
   * Copyright 1999-2002,2004 The Apache Software Foundation.
   *
   * Licensed 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 jaxp.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 &lt;kent@trl.ibm.co.jp&gt;
   */
  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;
      }
  }
  