source: trunk/gsdl3/src/java/org/greenstone/gsdl3/util/CGIArgConverter.java@ 3509

package org.greenstone.gsdl3.util;

import java.util.HashMap;
import org.w3c.dom.Element;

public class CGIArgConverter {

    protected HashMap long_map_=null;
    protected HashMap short_map_=null;
    
    public CGIArgConverter() {
    long_map_ = new HashMap();
    short_map_ = new HashMap();

    // initialize with the ones we know about
    long_map_.put("case", "k");
    short_map_.put("k", "case");

    long_map_.put("stem", "s");
    short_map_.put("s", "stem");
    
    long_map_.put("queryLevel", "ql");
    short_map_.put("ql", "queryLevel");
    
    long_map_.put("index", "i");
    short_map_.put("i", "index");
    
    long_map_.put("matchMode", "mm");
    short_map_.put("mm", "matchMode");

    long_map_.put("sortBy", "sb");
    short_map_.put("sb", "sortBy");
    
    long_map_.put("maxDocs", "md");
    short_map_.put("md", "maxDocs");

    short_map_.put("c", "collection"); 
    long_map_.put("collection", "c");

    short_map_.put("a", "action"); 
    long_map_.put("action", "a");

    short_map_.put("sa", "subaction"); 
    long_map_.put("subaction", "sa");   

    short_map_.put("sn", "serviceName"); 
    long_map_.put("serviceName", "sn"); 

    short_map_.put("sc", "serviceCluster");
    long_map_.put("serviceCluster", "sc");

    short_map_.put("l", "lang"); 
    long_map_.put("lang", "l");

    long_map_.put("query", "q");
    short_map_.put("q", "query");
    
    long_map_.put("resource", "r");
    short_map_.put("r", "resource");

    short_map_.put("cl", "classifier"); 
    long_map_.put("classifier", "cl");
    }

    public boolean toLong(Element param_list) {
    
    if (!param_list.getNodeName().equals("paramList")) {
        System.out.println("wrong element to CGIArgConverter:toLong");
        return false;
    }
    
    Element param = (Element)param_list.getFirstChild();
    while (param!=null) {
        String name = param.getAttribute("name");
        param.setAttribute("name", toLong(name));
        param = (Element)param.getNextSibling();
    }
    return true;

    }
    
    public boolean  addShortNames(Element param_list) {
    if (!param_list.getNodeName().equals("paramList")) {
        System.out.println("wrong element to CGIArgConverter:toShort");
        return false;
    }
    
    Element param = (Element)param_list.getFirstChild();
    while (param!=null) {
        String name = param.getAttribute("name");
        param.setAttribute("shortname", toShort(name));
        param = (Element)param.getNextSibling();
    }
    return true;

    }
    

    public String toLong(String short_name) {
    
    
    if (short_map_.containsKey(short_name)) {
        return (String)short_map_.get(short_name);
    }
    System.err.println("CGIArgConverter: short name '"+short_name+"' not found in map!");
    return short_name; // just return the original
    }

    public String toShort(String long_name) {

    if (long_map_.containsKey(long_name)) {
        return (String)long_map_.get(long_name);
    }

    // else need to create a new mapping
    String short_name = newShortName(long_name);
    long_map_.put(long_name, short_name);
    short_map_.put(short_name, long_name);
    return short_name;
    }

    protected String newShortName(String long_name) {

    // for now, try the first letter, then first two etc.
    int i=1;
    String short_try= long_name.substring(0,1);
    while(short_map_.containsKey(short_try)&& i<long_name.length()) {
        i++;
        short_try = long_name.substring(0, i);
    }
    if (i==long_name.length()) {
        return ""; // couldn't find one
    }
    return short_try;
    }
}