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/*
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 *   Copyright 2013 Brian Rosenberger (Brutex Network)
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 *
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 *   Licensed under the Apache License, Version 2.0 (the "License");
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 *   you may not use this file except in compliance with the License.
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 *   You may obtain a copy of the License at
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 *
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 *       http://www.apache.org/licenses/LICENSE-2.0
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 *
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 *   Unless required by applicable law or agreed to in writing, software
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 *   distributed under the License is distributed on an "AS IS" BASIS,
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 *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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 *   See the License for the specific language governing permissions and
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 *   limitations under the License.
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 */
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package net.brutex.xservices.ws.impl;
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import java.util.ArrayList;
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import java.util.StringTokenizer;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import javax.jws.WebService;
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import net.brutex.xservices.types.StringMatchType;
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import net.brutex.xservices.types.StringReplaceType;
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import net.brutex.xservices.types.StringSplitType;
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import net.brutex.xservices.ws.StringService;
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import net.brutex.xservices.ws.XServicesFault;
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import org.apache.commons.lang3.StringEscapeUtils;
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import org.apache.commons.lang3.text.translate.CharSequenceTranslator;
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import org.apache.commons.lang3.text.translate.NumericEntityEscaper;
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/**
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 * @author Brian Rosenberger, bru(at)brutex.de
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 *
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 */
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@WebService(targetNamespace="http://ws.xservices.brutex.net", endpointInterface="net.brutex.xservices.ws.StringService", serviceName="StringService")
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public class StringServiceImpl
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  implements StringService
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{
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  public StringReplaceType replaceRegEx(String res, String search, String replace, String flags)
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    throws XServicesFault
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  {
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    try
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    {
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      int allflags = getFlags(flags);
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      Pattern pattern = Pattern.compile(search, allflags);
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      Matcher matcher = pattern.matcher(res);
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      int count = 0;
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      while (matcher.find()) {
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        count++;
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      }
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      if (flags.contains("g")) {
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        return new StringReplaceType(matcher.replaceAll(replace), count);
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      }
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      if (count > 1)
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        count = 1;
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      return new StringReplaceType(matcher.replaceFirst(replace),
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        count);
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    }
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    catch (Exception e) {
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      throw new XServicesFault(e);
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    }
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  }
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  public StringMatchType matchRegEx(String res, String search, String flags)
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    throws XServicesFault
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  {
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    int allflags = getFlags(flags);
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    Pattern pattern = Pattern.compile(search, allflags);
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    Matcher matcher = pattern.matcher(res);
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    StringMatchType rm = new StringMatchType();
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	for (int i=0; i <= matcher.groupCount(); i++) {
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	    	while(matcher.find()) {
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	    		rm.addStringMatch(matcher.start(i), matcher.end(i), "group-"+i, matcher.group(i));
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	    	}
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	    	matcher.reset();
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	 }
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    return rm;
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  }
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  public String encodeToXMLEntities(String res)
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    throws XServicesFault
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  {
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    StringEscapeUtils fac = new StringEscapeUtils();
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    StringEscapeUtils.ESCAPE_XML.with(new CharSequenceTranslator[] { NumericEntityEscaper.between(128, 2147483647) });
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    return StringEscapeUtils.escapeXml(res);
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  }
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  public StringSplitType splitString(String paramString, String delimiter) throws XServicesFault {
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		StringTokenizer tk = new StringTokenizer(paramString, delimiter);
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		StringSplitType result = new StringSplitType();
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		while(tk.hasMoreTokens()) {
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			result.addStringMatch( tk.nextToken() );
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		}
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		return result;
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	}
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  private int getFlags(String flags) {
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    int allflags = 0;
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    if (flags.contains("i")) {
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      allflags += 2;
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    }
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    if (flags.contains("m")) {
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      allflags += 8;
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    }
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    if (flags.contains("u")) {
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      allflags += 64;
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    }
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    if (flags.contains("s")) {
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      allflags += 32;
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    }
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    if (flags.contains("d")) {
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      allflags++;
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    }
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    if (flags.contains("x")) {
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      allflags += 4;
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    }
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    return allflags;
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  }
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}