1/**
  2 * Cookie functions.
  3 *
  4 * @output wp-includes/js/utils.js
  5 */
  6
  7/* global userSettings, getAllUserSettings, wpCookies, setUserSetting */
  8/* exported getUserSetting, setUserSetting, deleteUserSetting */
  9
 10window.wpCookies = {
 11// The following functions are from Cookie.js class in TinyMCE 3, Moxiecode, used under LGPL.
 12
 13	each: function( obj, cb, scope ) {
 14		var n, l;
 15
 16		if ( ! obj ) {
 17			return 0;
 18		}
 19
 20		scope = scope || obj;
 21
 22		if ( typeof( obj.length ) !== 'undefined' ) {
 23			for ( n = 0, l = obj.length; n < l; n++ ) {
 24				if ( cb.call( scope, obj[n], n, obj ) === false ) {
 25					return 0;
 26				}
 27			}
 28		} else {
 29			for ( n in obj ) {
 30				if ( obj.hasOwnProperty(n) ) {
 31					if ( cb.call( scope, obj[n], n, obj ) === false ) {
 32						return 0;
 33					}
 34				}
 35			}
 36		}
 37		return 1;
 38	},
 39
 40	/**
 41	 * Get a multi-values cookie.
 42	 * Returns a JS object with the name: 'value' pairs.
 43	 */
 44	getHash: function( name ) {
 45		var cookie = this.get( name ), values;
 46
 47		if ( cookie ) {
 48			this.each( cookie.split('&'), function( pair ) {
 49				pair = pair.split('=');
 50				values = values || {};
 51				values[pair[0]] = pair[1];
 52			});
 53		}
 54
 55		return values;
 56	},
 57
 58	/**
 59	 * Set a multi-values cookie.
 60	 *
 61	 * 'values_obj' is the JS object that is stored. It is encoded as URI in wpCookies.set().
 62	 */
 63	setHash: function( name, values_obj, expires, path, domain, secure ) {
 64		var str = '';
 65
 66		this.each( values_obj, function( val, key ) {
 67			str += ( ! str ? '' : '&' ) + key + '=' + val;
 68		});
 69
 70		this.set( name, str, expires, path, domain, secure );
 71	},
 72
 73	/**
 74	 * Get a cookie.
 75	 */
 76	get: function( name ) {
 77		var e, b,
 78			cookie = document.cookie,
 79			p = name + '=';
 80
 81		if ( ! cookie ) {
 82			return;
 83		}
 84
 85		b = cookie.indexOf( '; ' + p );
 86
 87		if ( b === -1 ) {
 88			b = cookie.indexOf(p);
 89
 90			if ( b !== 0 ) {
 91				return null;
 92			}
 93		} else {
 94			b += 2;
 95		}
 96
 97		e = cookie.indexOf( ';', b );
 98
 99		if ( e === -1 ) {
100			e = cookie.length;
101		}
102
103		return decodeURIComponent( cookie.substring( b + p.length, e ) );
104	},
105
106	/**
107	 * Set a cookie.
108	 *
109	 * The 'expires' arg can be either a JS Date() object set to the expiration date (back-compat)
110	 * or the number of seconds until expiration
111	 */
112	set: function( name, value, expires, path, domain, secure ) {
113		var d = new Date();
114
115		if ( typeof( expires ) === 'object' && expires.toGMTString ) {
116			expires = expires.toGMTString();
117		} else if ( parseInt( expires, 10 ) ) {
118			d.setTime( d.getTime() + ( parseInt( expires, 10 ) * 1000 ) ); // Time must be in milliseconds.
119			expires = d.toGMTString();
120		} else {
121			expires = '';
122		}
123
124		document.cookie = name + '=' + encodeURIComponent( value ) +
125			( expires ? '; expires=' + expires : '' ) +
126			( path    ? '; path=' + path       : '' ) +
127			( domain  ? '; domain=' + domain   : '' ) +
128			( secure  ? '; secure'             : '' );
129	},
130
131	/**
132	 * Remove a cookie.
133	 *
134	 * This is done by setting it to an empty value and setting the expiration time in the past.
135	 */
136	remove: function( name, path, domain, secure ) {
137		this.set( name, '', -1000, path, domain, secure );
138	}
139};
140
141// Returns the value as string. Second arg or empty string is returned when value is not set.
142window.getUserSetting = function( name, def ) {
143	var settings = getAllUserSettings();
144
145	if ( settings.hasOwnProperty( name ) ) {
146		return settings[name];
147	}
148
149	if ( typeof def !== 'undefined' ) {
150		return def;
151	}
152
153	return '';
154};
155
156/*
157 * Both name and value must be only ASCII letters, numbers or underscore
158 * and the shorter, the better (cookies can store maximum 4KB). Not suitable to store text.
159 * The value is converted and stored as string.
160 */
161window.setUserSetting = function( name, value, _del ) {
162	if ( 'object' !== typeof userSettings ) {
163		return false;
164	}
165
166	var uid = userSettings.uid,
167		settings = wpCookies.getHash( 'wp-settings-' + uid ),
168		path = userSettings.url,
169		secure = !! userSettings.secure;
170
171	name = name.toString().replace( /[^A-Za-z0-9_-]/g, '' );
172
173	if ( typeof value === 'number' ) {
174		value = parseInt( value, 10 );
175	} else {
176		value = value.toString().replace( /[^A-Za-z0-9_-]/g, '' );
177	}
178
179	settings = settings || {};
180
181	if ( _del ) {
182		delete settings[name];
183	} else {
184		settings[name] = value;
185	}
186
187	wpCookies.setHash( 'wp-settings-' + uid, settings, 31536000, path, '', secure );
188	wpCookies.set( 'wp-settings-time-' + uid, userSettings.time, 31536000, path, '', secure );
189
190	return name;
191};
192
193window.deleteUserSetting = function( name ) {
194	return setUserSetting( name, '', 1 );
195};
196
197// Returns all settings as JS object.
198window.getAllUserSettings = function() {
199	if ( 'object' !== typeof userSettings ) {
200		return {};
201	}
202
203	return wpCookies.getHash( 'wp-settings-' + userSettings.uid ) || {};
204};
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