ScoDoc/app/static/libjs/purl.js

268 lines
8.6 KiB
JavaScript

/*
* Purl (A JavaScript URL parser) v2.3.1
* Developed and maintanined by Mark Perkins, mark@allmarkedup.com
* Source repository: https://github.com/allmarkedup/jQuery-URL-Parser
* Licensed under an MIT-style license. See https://github.com/allmarkedup/jQuery-URL-Parser/blob/master/LICENSE for details.
*/
;(function(factory) {
if (typeof define === 'function' && define.amd) {
define(factory);
} else {
window.purl = factory();
}
})(function() {
var tag2attr = {
a : 'href',
img : 'src',
form : 'action',
base : 'href',
script : 'src',
iframe : 'src',
link : 'href',
embed : 'src',
object : 'data'
},
key = ['source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'fragment'], // keys available to query
aliases = { 'anchor' : 'fragment' }, // aliases for backwards compatability
parser = {
strict : /^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/, //less intuitive, more accurate to the specs
loose : /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/ // more intuitive, fails on relative paths and deviates from specs
},
isint = /^[0-9]+$/;
function parseUri( url, strictMode ) {
var str = decodeURI( url ),
res = parser[ strictMode || false ? 'strict' : 'loose' ].exec( str ),
uri = { attr : {}, param : {}, seg : {} },
i = 14;
while ( i-- ) {
uri.attr[ key[i] ] = res[i] || '';
}
// build query and fragment parameters
uri.param['query'] = parseString(uri.attr['query']);
uri.param['fragment'] = parseString(uri.attr['fragment']);
// split path and fragement into segments
uri.seg['path'] = uri.attr.path.replace(/^\/+|\/+$/g,'').split('/');
uri.seg['fragment'] = uri.attr.fragment.replace(/^\/+|\/+$/g,'').split('/');
// compile a 'base' domain attribute
uri.attr['base'] = uri.attr.host ? (uri.attr.protocol ? uri.attr.protocol+'://'+uri.attr.host : uri.attr.host) + (uri.attr.port ? ':'+uri.attr.port : '') : '';
return uri;
}
function getAttrName( elm ) {
var tn = elm.tagName;
if ( typeof tn !== 'undefined' ) return tag2attr[tn.toLowerCase()];
return tn;
}
function promote(parent, key) {
if (parent[key].length === 0) return parent[key] = {};
var t = {};
for (var i in parent[key]) t[i] = parent[key][i];
parent[key] = t;
return t;
}
function parse(parts, parent, key, val) {
var part = parts.shift();
if (!part) {
if (isArray(parent[key])) {
parent[key].push(val);
} else if ('object' == typeof parent[key]) {
parent[key] = val;
} else if ('undefined' == typeof parent[key]) {
parent[key] = val;
} else {
parent[key] = [parent[key], val];
}
} else {
var obj = parent[key] = parent[key] || [];
if (']' == part) {
if (isArray(obj)) {
if ('' !== val) obj.push(val);
} else if ('object' == typeof obj) {
obj[keys(obj).length] = val;
} else {
obj = parent[key] = [parent[key], val];
}
} else if (~part.indexOf(']')) {
part = part.substr(0, part.length - 1);
if (!isint.test(part) && isArray(obj)) obj = promote(parent, key);
parse(parts, obj, part, val);
// key
} else {
if (!isint.test(part) && isArray(obj)) obj = promote(parent, key);
parse(parts, obj, part, val);
}
}
}
function merge(parent, key, val) {
if (~key.indexOf(']')) {
var parts = key.split('[');
parse(parts, parent, 'base', val);
} else {
if (!isint.test(key) && isArray(parent.base)) {
var t = {};
for (var k in parent.base) t[k] = parent.base[k];
parent.base = t;
}
if (key !== '') {
set(parent.base, key, val);
}
}
return parent;
}
function parseString(str) {
return reduce(String(str).split(/&|;/), function(ret, pair) {
try {
pair = decodeURIComponent(pair.replace(/\+/g, ' '));
} catch(e) {
// ignore
}
var eql = pair.indexOf('='),
brace = lastBraceInKey(pair),
key = pair.substr(0, brace || eql),
val = pair.substr(brace || eql, pair.length);
val = val.substr(val.indexOf('=') + 1, val.length);
if (key === '') {
key = pair;
val = '';
}
return merge(ret, key, val);
}, { base: {} }).base;
}
function set(obj, key, val) {
var v = obj[key];
if (typeof v === 'undefined') {
obj[key] = val;
} else if (isArray(v)) {
v.push(val);
} else {
obj[key] = [v, val];
}
}
function lastBraceInKey(str) {
var len = str.length,
brace,
c;
for (var i = 0; i < len; ++i) {
c = str[i];
if (']' == c) brace = false;
if ('[' == c) brace = true;
if ('=' == c && !brace) return i;
}
}
function reduce(obj, accumulator){
var i = 0,
l = obj.length >> 0,
curr = arguments[2];
while (i < l) {
if (i in obj) curr = accumulator.call(undefined, curr, obj[i], i, obj);
++i;
}
return curr;
}
function isArray(vArg) {
return Object.prototype.toString.call(vArg) === "[object Array]";
}
function keys(obj) {
var key_array = [];
for ( var prop in obj ) {
if ( obj.hasOwnProperty(prop) ) key_array.push(prop);
}
return key_array;
}
function purl( url, strictMode ) {
if ( arguments.length === 1 && url === true ) {
strictMode = true;
url = undefined;
}
strictMode = strictMode || false;
url = url || window.location.toString();
return {
data : parseUri(url, strictMode),
// get various attributes from the URI
attr : function( attr ) {
attr = aliases[attr] || attr;
return typeof attr !== 'undefined' ? this.data.attr[attr] : this.data.attr;
},
// return query string parameters
param : function( param ) {
return typeof param !== 'undefined' ? this.data.param.query[param] : this.data.param.query;
},
// return fragment parameters
fparam : function( param ) {
return typeof param !== 'undefined' ? this.data.param.fragment[param] : this.data.param.fragment;
},
// return path segments
segment : function( seg ) {
if ( typeof seg === 'undefined' ) {
return this.data.seg.path;
} else {
seg = seg < 0 ? this.data.seg.path.length + seg : seg - 1; // negative segments count from the end
return this.data.seg.path[seg];
}
},
// return fragment segments
fsegment : function( seg ) {
if ( typeof seg === 'undefined' ) {
return this.data.seg.fragment;
} else {
seg = seg < 0 ? this.data.seg.fragment.length + seg : seg - 1; // negative segments count from the end
return this.data.seg.fragment[seg];
}
}
};
}
purl.jQuery = function($){
if ($ != null) {
$.fn.url = function( strictMode ) {
var url = '';
if ( this.length ) {
url = $(this).attr( getAttrName(this[0]) ) || '';
}
return purl( url, strictMode );
};
$.url = purl;
}
};
purl.jQuery(window.jQuery);
return purl;
});