source: trunk/gsdl3/src/java/org/greenstone/gsdl3/util/CGIArgConverter.java@ 3362

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");
    // add in short names for the ones that are used, but dont need logn names
    short_map_.put("a", "a");
    short_map_.put("sa", "sa");
    short_map_.put("c", "c");
    short_map_.put("l", "l");

    }

    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 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;
    }
}