/*
 * Copyright (C) [2004, 2005, 2006], Hyperic, Inc.
 * This file is part of SIGAR.
 * 
 * SIGAR is free software; you can redistribute it and/or modify
 * it under the terms version 2 of the GNU General Public License as
 * published by the Free Software Foundation. This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA.
 */

package org.hyperic.sigar.ptql;

import java.lang.reflect.Method;
import java.util.Map;

import org.hyperic.sigar.util.ReferenceMap;

public class StringPattern {
    static Class patternClass;
    static Method compile, matcher, find;
    private static Map patterns = null;
    
    //XXX avoiding 1.4 requirement
    private static void init() throws Exception {
        patterns = ReferenceMap.synchronizedMap();
        patternClass = Class.forName("java.util.regex.Pattern");
        Class matcherClass = Class.forName("java.util.regex.Matcher");
        Class[] arg = { String.class };
        compile = patternClass.getDeclaredMethod("compile", arg);
        arg = new Class[] { Class.forName("java.lang.CharSequence") };
        matcher = patternClass.getDeclaredMethod("matcher", arg);
        find = matcherClass.getDeclaredMethod("find", new Class[0]);
    }

    /**
     * Wrapper around Pattern.compile(regex).matcher(source).find()
     */
    public static boolean matches(String source, String regex) {
        try {
            if (patterns == null) {
                init();
            }

            Object pattern = patterns.get(regex);
            if (pattern == null) {
                //pattern = Pattern.compile(regex)
                pattern = compile.invoke(patternClass, new Object[] { regex });
                patterns.put(regex, pattern);
            }
            //m = pattern.matcher(source)
            Object m = matcher.invoke(pattern, new Object[] { source });
            //result = m.find()
            Boolean result = (Boolean)find.invoke(m, new Object[0]);
            return result.booleanValue();
        } catch (Exception e) {
            System.err.println("Error matching '" +
                               regex + "' against '" +
                               source + "'");
            e.printStackTrace();
            return false;
        }
    }
}


@@ -776,27 +776,48 @@
 ava.
-lang.reflect.Method
+util.Map;%0Aimport java.util.regex.Matcher
 ;%0Aim
@@ -831,19 +831,29 @@
 va.util.
-Map
+regex.Pattern
 ;%0A%0Aimpor
@@ -929,712 +929,74 @@
     
-static Class patternClass;%0A    static Method compile, matcher, find;%0A    private static Map patterns = null;%0A    %0A    //XXX avoiding 1.4 requirement%0A    private static void init() throws Exception %7B%0A        patterns = ReferenceMap.synchronizedMap();%0A        patternClass = Class.forName(%22java.util.regex.Pattern%22);%0A        Class matcherClass = Class.forName(%22java.util.regex.Matcher%22);%0A        Class%5B%5D arg = %7B String.class %7D;%0A        compile = patternClass.getDeclaredMethod(%22compile%22, arg);%0A        arg = new Class%5B%5D %7B Class.forName(%22java.lang.CharSequence%22) %7D;%0A        matcher = patternClass.getDeclaredMethod(%22matcher%22, arg);%0A        find = matcherClass.getDeclaredMethod(%22find%22, new Class%5B0%5D);%0A    %7D%0A
+private static Map patterns = ReferenceMap.synchronizedMap();%0A    
 %0A   
@@ -1153,118 +1153,35 @@
     
-try %7B%0A            if (
+Pattern 
 pattern
-s
  =
-= null) %7B%0A                init();%0A            %7D%0A%0A            Object p
+ (P
 attern
- = 
+)
 patt
@@ -1205,20 +1205,16 @@
         
-    
 if (patt
@@ -1240,22 +1240,16 @@
         
-    //
 pattern 
@@ -1276,91 +1276,10 @@
 gex)
+;
 %0A
-                pattern = compile.invoke(patternClass, new Object%5B%5D %7B regex %7D);%0A  
     
@@ -1282,26 +1282,24 @@
             
-  
 patterns.put
@@ -1320,28 +1320,24 @@
 n);%0A        
-    
 %7D%0A          
@@ -1338,511 +1338,81 @@
     
-    //m = pattern.matcher(source)%0A            Object m = matcher.invoke(pattern, new Object%5B%5D %7B source %7D);%0A            //result = m.find()%0A            Boolean result = (Boolean)find.invoke(m, new Object%5B0%5D);%0A            return result.booleanValue();%0A        %7D catch (Exception e) %7B%0A            System.err.println(%22Error matching '%22 +%0A                               regex + %22' against '%22 +%0A                               source + %22'%22);%0A            e.printStackTrace();%0A            return false;%0A        %7D
+Matcher matcher = pattern.matcher(source);%0A        return matcher.find();
 %0A   

remove reflection around regex classes