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ESP-ThinkGear - An EEG Signal Processing Library for NeuroSky ThinkGear devices
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/*
* ESP-ThinkGear Copyright (C) 2014 Burton Alexander
*
* 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., 51
* Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
package org.json;
import java.io.Serializable;
/*
Copyright (c) 2002 JSON.org
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
The Software shall be used for Good, not Evil.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
*/
/**
* Convert a web browser cookie specification to a JSONObject and back. JSON and
* Cookies are both notations for name/value pairs.
*
* @author JSON.org
* @version 2010-12-24
*/
public class Cookie implements Serializable {
private static final long serialVersionUID = -9089730619301036678L;
/**
* Produce a copy of a string in which the characters '+', '%', '=', ';' and
* control characters are replaced with "%hh". This is a gentle form of URL
* encoding, attempting to cause as little distortion to the string as
* possible. The characters '=' and ';' are meta characters in cookies. By
* convention, they are escaped using the URL-encoding. This is only a
* convention, not a standard. Often, cookies are expected to have encoded
* values. We encode '=' and ';' because we must. We encode '%' and '+'
* because they are meta characters in URL encoding.
*
* @param string
* The source string.
* @return The escaped result.
*/
public static String escape(String string) {
char c;
String s = string.trim();
StringBuffer sb = new StringBuffer();
int length = s.length();
for (int i = 0; i < length; i += 1) {
c = s.charAt(i);
if (c < ' ' || c == '+' || c == '%' || c == '=' || c == ';') {
sb.append('%');
sb.append(Character.forDigit((char) ((c >>> 4) & 0x0f), 16));
sb.append(Character.forDigit((char) (c & 0x0f), 16));
} else {
sb.append(c);
}
}
return sb.toString();
}
/**
* Convert a cookie specification string into a JSONObject. The string will
* contain a name value pair separated by '='. The name and the value will be
* unescaped, possibly converting '+' and '%' sequences. The cookie properties
* may follow, separated by ';', also represented as name=value (except the
* secure property, which does not have a value). The name will be stored
* under the key "name", and the value will be stored under the key "value".
* This method does not do checking or validation of the parameters. It only
* converts the cookie string into a JSONObject.
*
* @param string
* The cookie specification string.
* @return A JSONObject containing "name", "value", and possibly other
* members.
* @throws JSONException
*/
public static JSONObject toJSONObject(String string) throws JSONException {
String name;
JSONObject jo = new JSONObject();
Object value;
JSONTokener x = new JSONTokener(string);
jo.put("name", x.nextTo('='));
x.next('=');
jo.put("value", x.nextTo(';'));
x.next();
while (x.more()) {
name = unescape(x.nextTo("=;"));
if (x.next() != '=') {
if (name.equals("secure")) {
value = Boolean.TRUE;
} else {
throw x.syntaxError("Missing '=' in cookie parameter.");
}
} else {
value = unescape(x.nextTo(';'));
x.next();
}
jo.put(name, value);
}
return jo;
}
/**
* Convert a JSONObject into a cookie specification string. The JSONObject
* must contain "name" and "value" members. If the JSONObject contains
* "expires", "domain", "path", or "secure" members, they will be appended to
* the cookie specification string. All other members are ignored.
*
* @param jo
* A JSONObject
* @return A cookie specification string
* @throws JSONException
*/
public static String toString(JSONObject jo) throws JSONException {
StringBuffer sb = new StringBuffer();
sb.append(escape(jo.getString("name")));
sb.append("=");
sb.append(escape(jo.getString("value")));
if (jo.has("expires")) {
sb.append(";expires=");
sb.append(jo.getString("expires"));
}
if (jo.has("domain")) {
sb.append(";domain=");
sb.append(escape(jo.getString("domain")));
}
if (jo.has("path")) {
sb.append(";path=");
sb.append(escape(jo.getString("path")));
}
if (jo.optBoolean("secure")) {
sb.append(";secure");
}
return sb.toString();
}
/**
* Convert %hh sequences to single characters, and convert
* plus to space.
*
* @param string
* A string that may contain +
* (plus) and %hh sequences.
* @return The unescaped string.
*/
public static String unescape(String string) {
int length = string.length();
StringBuffer sb = new StringBuffer();
for (int i = 0; i < length; ++i) {
char c = string.charAt(i);
if (c == '+') {
c = ' ';
} else if (c == '%' && i + 2 < length) {
int d = JSONTokener.dehexchar(string.charAt(i + 1));
int e = JSONTokener.dehexchar(string.charAt(i + 2));
if (d >= 0 && e >= 0) {
c = (char) (d * 16 + e);
i += 2;
}
}
sb.append(c);
}
return sb.toString();
}
}