http.java

tiled地图编辑器是2d的,很不错的国外软件,使用起来很方便的

package org.json;

import java.util.Iterator;
import java.util.NoSuchElementException;
import java.text.ParseException;

/**
 * Convert an HTTP header to a JSONObject and back.
 * <p>
 * Public Domain 2002 JSON.org
 * @author JSON.org
 * @version 0.1
 */
public class HTTP {

    private HTTP() {}

    /** Carriage return/line feed. */
    public static final String CRLF = "\r\n";

    /**
     * Convert an HTTP header string into a JSONObject. It can be a request
     * header or a response header. A request header will contain
     * <pre>{
     *    Method: "POST" (for example),
     *    "Request-URI": "/" (for example),
     *    "HTTP-Version": "HTTP/1.1" (for example)
     * }</pre>
     * A response header will contain
     * <pre>{
     *    "HTTP-Version": "HTTP/1.1" (for example),
     *    "Status-Code": "200" (for example),
     *    "Reason-Phrase": "OK" (for example)
     * }</pre>
     * In addition, the other parameters in the header will be captured, using
     * the HTTP field names as JSON names, so that <pre>
     *    Date: Sun, 26 May 2002 18:06:04 GMT
     *    Cookie: Q=q2=PPEAsg--; B=677gi6ouf29bn&b=2&f=s
     *    Cache-Control: no-cache</pre>
     * become
     * <pre>{...
     *    Date: "Sun, 26 May 2002 18:06:04 GMT",
     *    Cookie: "Q=q2=PPEAsg--; B=677gi6ouf29bn&b=2&f=s",
     *    "Cache-Control": "no-cache",
     * ...}</pre>
     * It does no further checking or conversion. It does not parse dates.
     * It does not do '%' transforms on URLs.
     * @param string An HTTP header string.
     * @return A JSONObject containing the elements and attributes
     * of the XML string.
     * @throws ParseException
     */
    public static JSONObject toJSONObject(String string) throws ParseException {
        JSONObject     o = new JSONObject();
        HTTPTokener    x = new HTTPTokener(string);
        String         t;

        t = x.nextToken();
        if (t.toUpperCase().startsWith("HTTP")) {

// Response

            o.put("HTTP-Version", t);
            o.put("Status-Code", x.nextToken());
            o.put("Reason-Phrase", x.nextTo('\0'));
            x.next();

        } else {

// Request

            o.put("Method", t);
            o.put("Request-URI", x.nextToken());
            o.put("HTTP-Version", x.nextToken());
        }

// Fields

        while (x.more()) {
            String name = x.nextTo(':');
            x.next(':');
            o.put(name, x.nextTo('\0'));
            x.next();
        }
        return o;
    }


    /**
     * Convert a JSONObject into an HTTP header. A request header must contain
     * <pre>{
     *    Method: "POST" (for example),
     *    "Request-URI": "/" (for example),
     *    "HTTP-Version": "HTTP/1.1" (for example)
     * }</pre>
     * A response header must contain
     * <pre>{
     *    "HTTP-Version": "HTTP/1.1" (for example),
     *    "Status-Code": "200" (for example),
     *    "Reason-Phrase": "OK" (for example)
     * }</pre>
     * Any other members of the JSONObject will be output as HTTP fields.
     * The result will end with two CRLF pairs.
     * @param o A JSONObject
     * @return An HTTP header string.
     * @throws NoSuchElementException if the object does not contain enough
     *  information. 
     */
    public static String toString(JSONObject o) throws NoSuchElementException {
        Iterator     keys = o.keys();
        String       s;
        StringBuffer sb = new StringBuffer();
        if (o.has("Status-Code") && o.has("Reason-Phrase")) {
            sb.append(o.getString("HTTP-Version"));
            sb.append(' ');
            sb.append(o.getString("Status-Code"));
            sb.append(' ');
            sb.append(o.getString("Reason-Phrase"));
        } else if (o.has("Method") && o.has("Request-URI")) {
            sb.append(o.getString("Method"));
            sb.append(' ');
            sb.append('"');
            sb.append(o.getString("Request-URI"));
            sb.append('"');
            sb.append(' ');
            sb.append(o.getString("HTTP-Version"));
        } else {
            throw new NoSuchElementException(
                                    "Not enough material for an HTTP header.");
        }
        sb.append(CRLF);
        while (keys.hasNext()) {
            s = keys.next().toString();
            if (!s.equals("HTTP-Version")      && !s.equals("Status-Code") &&
                    !s.equals("Reason-Phrase") && !s.equals("Method") &&
                    !s.equals("Request-URI")   && !o.isNull(s)) {
                sb.append(s);
                sb.append(": ");
                sb.append(o.getString(s));
                sb.append(CRLF);
            }
        }
        sb.append(CRLF);
        return sb.toString();
    }
}