HttpParameterUtil.java

package com.fivehundredpx.api.auth;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

public class HttpParameterUtil {
	public static String getUrlParamValue(String url, String param) {
		int ix = url.indexOf('?');
		//
		if (ix != -1) {
			url = url.substring(ix + 1);
		}
		//
		
		String[] params = url.split("&");
		//
		for (int i = 0; i < params.length; i++) {
			if (params[i].startsWith(param + '=')) {
				return params[i].split("=")[1];
			}
		}
		//
		return null;
	}
	
	public static String encode(String value) {
        String encoded = null;
        try {
            encoded = URLEncoder.encode(value, "UTF-8");
        } catch (UnsupportedEncodingException ignore) {
        }
        StringBuffer buf = new StringBuffer(encoded.length());
        char focus;
        for (int i = 0; i < encoded.length(); i++) {
            focus = encoded.charAt(i);
            if (focus == '*') {
                buf.append("%2A");
            } else if (focus == '+') {
                buf.append("%20");
            } else if (focus == '%' && (i + 1) < encoded.length()
                    && encoded.charAt(i + 1) == '7' && encoded.charAt(i + 2) == 'E') {
                buf.append('~');
                i += 2;
            } else {
                buf.append(focus);
            }
        }
        return buf.toString();
    }
}