2 * Library for simple URI parsing and manipulation.
4 * Intended to be minimal, but featureful; do not expect full RFC 3986 compliance. The use cases we
5 * have in mind are constructing 'next page' or 'previous page' URLs, detecting whether we need to
6 * use cross-domain proxies for an API, constructing simple URL-based API calls, etc. Parsing here
7 * is regex-based, so may not work on all URIs, but is good enough for most.
9 * You can modify the properties directly, then use the #toString method to extract the full URI
10 * string again. Example:
12 * var uri = new mw.Uri( 'http://example.com/mysite/mypage.php?quux=2' );
14 * if ( uri.host == 'example.com' ) {
15 * uri.host = 'foo.example.com';
16 * uri.extend( { bar: 1 } );
18 * $( 'a#id1' ).attr( 'href', uri );
19 * // anchor with id 'id1' now links to http://foo.example.com/mysite/mypage.php?bar=1&quux=2
21 * $( 'a#id2' ).attr( 'href', uri.clone().extend( { bar: 3, pif: 'paf' } ) );
22 * // anchor with id 'id2' now links to http://foo.example.com/mysite/mypage.php?bar=3&quux=2&pif=paf
26 * `http://usr:pwd@www.example.com:81/dir/dir.2/index.htm?q1=0&&test1&test2=&test3=value+%28escaped%29&r=1&r=2#top`
27 * the returned object will have the following properties:
32 * host 'www.example.com'
34 * path '/dir/dir.2/index.htm'
39 * test3: 'value (escaped)'
44 * (N.b., 'password' is technically not allowed for HTTP URIs, but it is possible with other kinds
47 * Parsing based on parseUri 1.2.2 (c) Steven Levithan <http://stevenlevithan.com>, MIT License.
48 * <http://stevenlevithan.com/demo/parseuri/js/>
53 ( function ( mw
, $ ) {
55 * Function that's useful when constructing the URI string -- we frequently encounter the pattern
56 * of having to add something to the URI as we go, but only if it's present, and to include a
57 * character before or after if so.
61 * @param {string|undefined} pre To prepend
62 * @param {string} val To include
63 * @param {string} post To append
64 * @param {boolean} raw If true, val will not be encoded
65 * @return {string} Result
67 function cat( pre
, val
, post
, raw
) {
68 if ( val
=== undefined || val
=== null || val
=== '' ) {
72 return pre
+ ( raw
? val
: mw
.Uri
.encode( val
) ) + post
;
76 * Regular expressions to parse many common URIs.
78 * As they are gnarly, they have been moved to separate files to allow us to format them in the
79 * 'extended' regular expression format (which JavaScript normally doesn't support). The subset of
80 * features handled is minimal, but just the free whitespace gives us a lot.
84 * @property {Object} parser
87 strict
: mw
.template
.get( 'mediawiki.Uri', 'strict.regexp' ).render(),
88 loose
: mw
.template
.get( 'mediawiki.Uri', 'loose.regexp' ).render()
92 * The order here matches the order of captured matches in the `parser` property regexes.
96 * @property {Array} properties
110 * @property {string} protocol For example `http` (always present)
113 * @property {string|undefined} user For example `usr`
116 * @property {string|undefined} password For example `pwd`
119 * @property {string} host For example `www.example.com` (always present)
122 * @property {string|undefined} port For example `81`
125 * @property {string} path For example `/dir/dir.2/index.htm` (always present)
128 * @property {Object} query For example `{ a: '0', b: '', c: 'value' }` (always present)
131 * @property {string|undefined} fragment For example `top`
135 * A factory method to create a Uri class with a default location to resolve relative URLs
136 * against (including protocol-relative URLs).
139 * @param {string|Function} documentLocation A full url, or function returning one.
140 * If passed a function, the return value may change over time and this will be honoured. (T74334)
143 mw
.UriRelative = function ( documentLocation
) {
144 var getDefaultUri
= ( function () {
149 var hrefCur
= typeof documentLocation
=== 'string' ? documentLocation
: documentLocation();
150 if ( href
=== hrefCur
) {
154 uri
= new Uri( href
);
160 * Construct a new URI object. Throws error if arguments are illegal/impossible, or
161 * otherwise don't parse.
165 * @param {Object|string} [uri] URI string, or an Object with appropriate properties (especially
166 * another URI object to clone). Object must have non-blank `protocol`, `host`, and `path`
167 * properties. If omitted (or set to `undefined`, `null` or empty string), then an object
168 * will be created for the default `uri` of this constructor (`location.href` for mw.Uri,
169 * other values for other instances -- see mw.UriRelative for details).
170 * @param {Object|boolean} [options] Object with options, or (backwards compatibility) a boolean
172 * @param {boolean} [options.strictMode=false] Trigger strict mode parsing of the url.
173 * @param {boolean} [options.overrideKeys=false] Whether to let duplicate query parameters
174 * override each other (`true`) or automagically convert them to an array (`false`).
176 function Uri( uri
, options
) {
178 defaultUri
= getDefaultUri();
180 options
= typeof options
=== 'object' ? options
: { strictMode
: !!options
};
181 options
= $.extend( {
186 if ( uri
!== undefined && uri
!== null && uri
!== '' ) {
187 if ( typeof uri
=== 'string' ) {
188 this.parse( uri
, options
);
189 } else if ( typeof uri
=== 'object' ) {
190 // Copy data over from existing URI object
191 for ( prop
in uri
) {
192 // Only copy direct properties, not inherited ones
193 if ( uri
.hasOwnProperty( prop
) ) {
194 // Deep copy object properties
195 if ( $.isArray( uri
[ prop
] ) || $.isPlainObject( uri
[ prop
] ) ) {
196 this[ prop
] = $.extend( true, {}, uri
[ prop
] );
198 this[ prop
] = uri
[ prop
];
207 // If we didn't get a URI in the constructor, use the default one.
208 return defaultUri
.clone();
211 // protocol-relative URLs
212 if ( !this.protocol
) {
213 this.protocol
= defaultUri
.protocol
;
217 this.host
= defaultUri
.host
;
220 this.port
= defaultUri
.port
;
223 if ( this.path
&& this.path
[ 0 ] !== '/' ) {
224 // A real relative URL, relative to defaultUri.path. We can't really handle that since we cannot
225 // figure out whether the last path component of defaultUri.path is a directory or a file.
226 throw new Error( 'Bad constructor arguments' );
228 if ( !( this.protocol
&& this.host
&& this.path
) ) {
229 throw new Error( 'Bad constructor arguments' );
234 * Encode a value for inclusion in a url.
236 * Standard encodeURIComponent, with extra stuff to make all browsers work similarly and more
237 * compliant with RFC 3986. Similar to rawurlencode from PHP and our JS library
238 * mw.util.rawurlencode, except this also replaces spaces with `+`.
241 * @param {string} s String to encode
242 * @return {string} Encoded string for URI
244 Uri
.encode = function ( s
) {
245 return encodeURIComponent( s
)
246 .replace( /!/g, '%21' ).replace( /'/g, '%27' ).replace( /\(/g, '%28' )
247 .replace( /\)/g, '%29' ).replace( /\*/g, '%2A
' )
248 .replace( /%20/g, '+' );
252 * Decode a url encoded value.
254 * Reversed #encode. Standard decodeURIComponent, with addition of replacing
258 * @param {string} s String to decode
259 * @return {string} Decoded string
261 Uri.decode = function ( s ) {
262 return decodeURIComponent( s.replace( /\+/g, '%20' ) );
268 * Parse a string and set our properties accordingly.
271 * @param {string} str URI, see constructor.
272 * @param {Object} options See constructor.
274 parse: function ( str, options ) {
277 hasOwn = Object.prototype.hasOwnProperty;
279 // Apply parser regex and set all properties based on the result
280 matches = parser[ options.strictMode ? 'strict
' : 'loose
' ].exec( str );
281 $.each( properties, function ( i, property ) {
282 uri[ property ] = matches[ i + 1 ];
285 // uri.query starts out as the query string; we will parse it into key-val pairs then make
286 // that object the "query" property.
287 // we overwrite query in uri way to make cloning easier, it can use the same list of properties.
289 // using replace to iterate over a string
291 uri.query.replace( /(?:^|&)([^&=]*)(?:(=)([^&]*))?/g, function ( $0, $1, $2, $3 ) {
294 k = Uri.decode( $1 );
295 v = ( $2 === '' || $2 === undefined ) ? null : Uri.decode( $3 );
297 // If overrideKeys, always (re)set top level value.
298 // If not overrideKeys but this key wasn't
set before
, then we
set it as well
.
299 if ( options
.overrideKeys
|| !hasOwn
.call( q
, k
) ) {
302 // Use arrays if overrideKeys is false and key was already seen before
304 // Once before, still a string, turn into an array
305 if ( typeof q
[ k
] === 'string' ) {
309 if ( $.isArray( q
[ k
] ) ) {
320 * Get user and password section of a URI.
324 getUserInfo: function () {
325 return cat( '', this.user
, cat( ':', this.password
, '' ) );
329 * Get host and port section of a URI.
333 getHostPort: function () {
334 return this.host
+ cat( ':', this.port
, '' );
338 * Get the userInfo, host and port section of the URI.
340 * In most real-world URLs this is simply the hostname, but the definition of 'authority' section is more general.
344 getAuthority: function () {
345 return cat( '', this.getUserInfo(), '@' ) + this.getHostPort();
349 * Get the query arguments of the URL, encoded into a string.
351 * Does not preserve the original order of arguments passed in the URI. Does handle escaping.
355 getQueryString: function () {
357 $.each( this.query
, function ( key
, val
) {
358 var k
= Uri
.encode( key
),
359 vals
= $.isArray( val
) ? val
: [ val
];
360 $.each( vals
, function ( i
, v
) {
363 } else if ( k
=== 'title' ) {
364 args
.push( k
+ '=' + mw
.util
.wikiUrlencode( v
) );
366 args
.push( k
+ '=' + Uri
.encode( v
) );
370 return args
.join( '&' );
374 * Get everything after the authority section of the URI.
378 getRelativePath: function () {
379 return this.path
+ cat( '?', this.getQueryString(), '', true ) + cat( '#', this.fragment
, '' );
383 * Get the entire URI string.
385 * May not be precisely the same as input due to order of query arguments.
387 * @return {string} The URI string
389 toString: function () {
390 return this.protocol
+ '://' + this.getAuthority() + this.getRelativePath();
396 * @return {Object} New URI object with same properties
399 return new Uri( this );
403 * Extend the query section of the URI with new parameters.
405 * @param {Object} parameters Query parameters to add to ours (or to override ours with) as an
407 * @return {Object} This URI object
409 extend: function ( parameters
) {
410 $.extend( this.query
, parameters
);
418 // Default to the current browsing location (for relative URLs).
419 mw
.Uri
= mw
.UriRelative( function () {
420 return location
.href
;
423 }( mediaWiki
, jQuery
) );