source: trunk/gli/src/org/greenstone/gatherer/util/GSDLSiteConfig.java@ 4364

package org.greenstone.gatherer.util;

import java.io.*;
import java.util.*;

public class GSDLSiteConfig
    extends LinkedHashMap {
    private File gsdlsite_cfg;
    private String autoenter_initial;
    private String start_browser_initial;

    static final public String ADD_COMMAND = "a=config&cmd=add-collection&c=";
    static final public String RELEASE_COMMAND = "a=config&cmd=release-collection&c=";
    static final public String QUIT_COMMAND = "a=";

    static final private String AUTOENTER = "autoenter";
    static final private String COLON = ":";
    static final private String ENTERLIB = "enterlib";
    static final private String FALSE = "0";
    static final private String GSDL = "gsdl";
    static final private String GSDLSITE_CFG = "gsdlsite.cfg";
    static final private String PORTNUMBER = "portnumber";
    static final private String SEPARATOR = "/";
    static final private String STARTBROWSER = "start_browser";
    static final private String TRUE = "1";
    static final private String URL = "url";

    public GSDLSiteConfig(File server_exe) {
    debug("New GSDLSiteConfig for: " + server_exe.getAbsolutePath());
    gsdlsite_cfg = new File(server_exe.getParentFile(), GSDLSITE_CFG);
          
    autoenter_initial = null;
    start_browser_initial = null;
    load();
    }

    public boolean exists() {
    return gsdlsite_cfg.exists();
    }

    public String getURL() {
    // URL is made from url and portnumber
    String url = (String) get(URL);
    if(url != null) {
        StringBuffer temp = new StringBuffer(url);
        temp.append(COLON);
        temp.append((String)get(PORTNUMBER));
        String enterlib = (String)get(ENTERLIB);
        if(enterlib == null || enterlib.length() == 0) {
        // Use the default /gsdl and hope for the best.
        temp.append(SEPARATOR);
        temp.append(GSDL);
        }
        else {
        if(!enterlib.startsWith(SEPARATOR)) {
            temp.append(SEPARATOR);
        }
        temp.append(enterlib);
        }
        enterlib = null;
        url = temp.toString();
    }
    debug("Found Local Library Address: " + url);
    return url;
    }

    public void load() {
    if(gsdlsite_cfg.exists()) {
        debug("Load: " + gsdlsite_cfg.getAbsolutePath());
        clear();
        try {
        BufferedReader in = new BufferedReader(new FileReader(gsdlsite_cfg));
        String line = null;
        while((line = in.readLine()) != null) {
            String key = null;
            String value = null;
            int index = -1;
            if((index = line.indexOf("=")) != -1 && line.length() >= index + 1) {
            key = line.substring(0, index);
            value = line.substring(index + 1);
            }
            else {
            key = line;
            }
            put(key, value);
        }
        }
        catch (Exception error) {
        error.printStackTrace();
        }
    }
    else {
        debug("No GSDLsite.cfg file can be found!");
    }
    }

    /** Restore the autoenter value to its initial value, and remove url if present. */
    public void restore() {
    debug("Restore Initial Settings");
    put(AUTOENTER, autoenter_initial);
    put(STARTBROWSER, start_browser_initial);
    remove(URL);
    save();
    }

    public void set() {
    debug("Set Session Settings");
    if(autoenter_initial == null) {
        autoenter_initial = (String) get(AUTOENTER);
        debug("Remember autoenter was: " + autoenter_initial);
    }
    put(AUTOENTER, TRUE);
    if(start_browser_initial == null) {
        start_browser_initial = (String) get(STARTBROWSER);
        debug("Remember start_browser was: " + start_browser_initial);
    }
    save();
    }

    private void debug(String message) {
    System.err.println(message);
    }

    private void save() {
    debug("Save: " + gsdlsite_cfg.getAbsolutePath());
    try {
        BufferedWriter out = new BufferedWriter(new FileWriter(gsdlsite_cfg, false));
        for(Iterator keys = keySet().iterator(); keys.hasNext(); ) {
        String key = (String) keys.next();
        String value = (String) get(key);
        out.write(key, 0, key.length());
        if(value != null) {
            out.write('=');
            out.write(value, 0, value.length());
        }
        out.newLine();
        }
        out.flush();
        out.close();
    }
    catch (Exception error) {
        error.printStackTrace();
    }
    }
}