source: trunk/gsdl3/src/java/org/greenstone/gsdl3/Library2.java@ 5798

/*
 *    Library2.java
 *    Copyright (C) 2002 New Zealand Digital Library, http://www.nzdl.org
 *
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
package org.greenstone.gsdl3;

import org.greenstone.gsdl3.core.*;
import org.greenstone.gsdl3.util.*;

import org.w3c.dom.Document;
import org.w3c.dom.Element;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Set;
import java.util.Iterator;
/**
 * A program to take cgi args from the command line and return html
 *
 * @author <a href="mailto:[email protected]">Katherine Don</a>
 * @version $Revision: 4994 $
 */

final public class Library2 {
 
    protected XMLConverter converter = null;
    protected Document doc = null;
    
    protected HashMap saved_args = null;
    protected GSParams params = null;
    protected DefaultReceptionist recept = null;
    
    public Library2 (){
    this.converter = new XMLConverter();
    this.doc = converter.newDOM();
    this.saved_args = new HashMap();
    this.params = new GSParams();
    this.recept = new DefaultReceptionist();
    }
    
    public void configure(String gsdl_home, String site_name, String interface_name) {

    HashMap config_params = new HashMap();
    config_params.put(GSConstants.GSDL3_HOME, gsdl_home);
    config_params.put(GSConstants.SITE_NAME, site_name);
    config_params.put(GSConstants.INTERFACE_NAME, interface_name);
    // new message router - create it and pass a handle to recept.
    // the servlet wont use this directly
    MessageRouter message_router = new MessageRouter();
    
    message_router.setSiteHome(GSFile.siteHome(gsdl_home, site_name));
    message_router.configure();
    // new receptionist
    recept.setConfigParams(config_params);
    recept.setMessageRouter(message_router);
    recept.setParams(params);
    recept.configure();
    }
    public static void main(String args[]) {

    if (args.length != 3) {
        System.out.println("Usage: Library2 <gsdl3 home> <site name> <interface name>");
        System.exit(1);
    }
    
    Library2 library = new Library2();
    library.configure(args[0], args[1], args[2]);
    

    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String query=null;
    String result=null;
    while (true) {
        System.out.println("Please enter the  cgi args (all on one line), or 'exit' to quit (default a=p&sa=home)");
        try {
        query = br.readLine();
        } catch (Exception e) {
        System.err.println("Library2 exception:"+e.getMessage());
        }
        if (query.startsWith("exit")) {
        System.exit(1);
        }

        result = library.process(query);
        
        System.out.println(result);


    }

    } 

    protected String process(String query) {
    Element xml_message  = generateRequest(query);
    System.out.println("*********************");
    System.out.println(converter.getPrettyString(xml_message));
    Element xml_result = recept.process(xml_message);
    return this.converter.getPrettyString(xml_result);
    }
    protected Element generateRequest(String cgiargs) {

    Element xml_message = this.doc.createElement(GSXML.MESSAGE_ELEM);
    Element xml_request = GSXML.createBasicRequest(this.doc, GSXML.REQUEST_TYPE_PAGE, "", "");
    xml_message.appendChild(xml_request);
    Element xml_param_list = this.doc.createElement(GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
    xml_request.appendChild(xml_param_list);

    // the defaults
    String action = "p";
    String subaction = "home";
    String lang = (String)saved_args.get(GSParams.LANGUAGE);
    if (lang == null) {
        lang = "en";
    }
    String output = "html";
    
    String args [] = cgiargs.split("&");
    for (int i=0; i<args.length; i++) {
        String arg = args[i];
        int pos = arg.indexOf('=');
        if (pos == -1) continue;
        String name = arg.substring(0, pos);
        String value = arg.substring(pos+1);
        if (name.equals(GSParams.ACTION)) {
        action = value;
        } else if (name.equals(GSParams.SUBACTION)) {
        subaction = (value);
        } else if (name.equals(GSParams.LANGUAGE)) {
        lang = value;
        saved_args.put(name, value);
        } else if (name.equals(GSParams.OUTPUT)) {
        output = value;
        } else if (params.shouldSave(name)) {
        saved_args.put(name, value);
        } else {
        // make a param now
        Element param = doc.createElement(GSXML.PARAM_ELEM);
        param.setAttribute(GSXML.NAME_ATT, name);
        param.setAttribute(GSXML.VALUE_ATT, GSXML.xmlSafe(value));
        xml_param_list.appendChild(param);
        }
    }

    xml_request.setAttribute(GSXML.OUTPUT_ATT, output);
    xml_request.setAttribute(GSXML.ACTION_ATT, action);
    xml_request.setAttribute(GSXML.SUBACTION_ATT, subaction);
    xml_request.setAttribute(GSXML.LANG_ATT, lang);


    // put in all the params from the session cache
    Set params = saved_args.keySet();
    Iterator i = params.iterator();
    while (i.hasNext()) {
        String name = (String)i.next();
        if (name.equals(GSParams.LANGUAGE)) continue;
        Element param = this.doc.createElement(GSXML.PARAM_ELEM);
        param.setAttribute(GSXML.NAME_ATT, name);
        param.setAttribute(GSXML.VALUE_ATT, GSXML.xmlSafe((String)saved_args.get(name)));
        xml_param_list.appendChild(param);
    }

    return xml_message;
    }
}