ilscipio/scipio-erp

package com.redfin.sitemapgenerator;

import java.net.URL;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

class UrlUtils {
    private static Map<String,String> ENTITIES = new HashMap<String,String>();
    static {
        ENTITIES.put("&", "&amp;");
        ENTITIES.put("'", "&apos;");
        ENTITIES.put("\"", "&quot;");
        ENTITIES.put(">", "&gt;");
        ENTITIES.put("<", "&lt;");
    }
    private static Pattern PATTERN = Pattern.compile("(&|'|\"|>|<)");

    static String escapeXml(String string){
        Matcher matcher = PATTERN.matcher(string);
        StringBuffer sb = new StringBuffer();
        while(matcher.find()) {
            matcher.appendReplacement(sb, ENTITIES.get(matcher.group(1)));
        }
        matcher.appendTail(sb);

        return sb.toString();
    }

    static void checkUrl(URL url, URL baseUrl) {
        // Is there a better test to use here?
        
        if (baseUrl.getHost() == null) {
            throw new RuntimeException("base URL is null");
        }
        
        if (!baseUrl.getHost().equalsIgnoreCase(url.getHost())) {
            throw new RuntimeException("Domain of URL " + url + " doesn't match base URL " + baseUrl);
        }
    }

    static <K,V> HashMap<K,V> newHashMap() {
        return new HashMap<K,V>();
    }
    
}