/* *  gnu/regexp/RETokenPOSIX.java *  Copyright (C) 1998-2001 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;final class RETokenPOSIX extends REToken {  int type;  boolean insens;  boolean negated;  static final int  ALNUM = 0;  static final int  ALPHA = 1;  static final int  BLANK = 2;  static final int  CNTRL = 3;  static final int  DIGIT = 4;  static final int  GRAPH = 5;  static final int  LOWER = 6;  static final int  PRINT = 7;  static final int  PUNCT = 8;  static final int  SPACE = 9;  static final int  UPPER = 10;  static final int XDIGIT = 11;  // Array indices correspond to constants defined above.  static final String[] s_nameTable =  {    "alnum", "alpha", "blank", "cntrl", "digit", "graph", "lower",    "print", "punct", "space", "upper", "xdigit"   };  // The RE constructor uses this to look up the constant for a string  static int intValue(String key) {    for (int i = 0; i < s_nameTable.length; i++) {      if (s_nameTable[i].equals(key)) return i;    }    return -1;  }  RETokenPOSIX(int subIndex, int type, boolean insens, boolean negated) {    super(subIndex);    this.type = type;    this.insens = insens;    this.negated = negated;  }    int getMinimumLength() {	return 1;    }    boolean match(CharIndexed input, REMatch mymatch) {    char ch = input.charAt(mymatch.index);    if (ch == CharIndexed.OUT_OF_BOUNDS)      return false;        boolean retval = false;    switch (type) {    case ALNUM:	// Note that there is some debate over whether '_' should be included	retval = Character.isLetterOrDigit(ch) || (ch == '_');	break;    case ALPHA:	retval = Character.isLetter(ch);	break;    case BLANK:	retval = ((ch == ' ') || (ch == '\t'));	break;    case CNTRL:	retval = Character.isISOControl(ch);	break;    case DIGIT:	retval = Character.isDigit(ch);	break;    case GRAPH:	retval = (!(Character.isWhitespace(ch) || Character.isISOControl(ch)));	break;    case LOWER:	retval = ((insens && Character.isLetter(ch)) || Character.isLowerCase(ch));	break;    case PRINT:	retval = (!(Character.isWhitespace(ch) || Character.isISOControl(ch)))	    || (ch == ' ');	break;    case PUNCT:	// This feels sloppy, especially for non-U.S. locales.	retval = ("`~!@#$%^&*()-_=+[]{}\\|;:'\"/?,.<>".indexOf(ch)!=-1);	break;    case SPACE:	retval = Character.isWhitespace(ch);	break;    case UPPER:	retval = ((insens && Character.isLetter(ch)) || Character.isUpperCase(ch));	break;    case XDIGIT:	retval = (Character.isDigit(ch) || ("abcdefABCDEF".indexOf(ch)!=-1));	break;    }    if (negated) retval = !retval;    if (retval) {	++mymatch.index;	return next(input, mymatch);    }    else return false;  }  void dump(StringBuffer os) {    if (negated) os.append('^');    os.append("[:" + s_nameTable[type] + ":]");  }}