| 1 |
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| 2 |
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| 3 |
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| 4 |
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| 5 | this.accept = function(choices, priority) {
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| 6 |
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| 7 | 'use strict';
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| 8 | var group = 0
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| 9 | , ruleSeq = 0
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| 10 | , rules = choices.constructor == Object ? Object.keys(choices) : choices
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| 11 | , escapeRe = /[.+?^!:${}()|\[\]\/\\]/g
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| 12 | , fnStr = 'for(;(m=r.exec(i))&&(m='
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| 13 |
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| 14 | return Function(
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| 15 | 'c,R,D',
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| 16 | 'var r=/(?:^|,\\s*)(?:(' +
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| 17 | ('' + rules).replace(/[^,;]+|\s*;\s*(\w+)=("([^"]*)"|[^,;\s]*)|,/ig, function add(rule, key, token, qstr, offset, all) {
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| 18 | if (key) {
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| 19 | fnStr += ',' + key + ':D(m[' + (++group) + '],m[' + (++group + 1) + ']==null?m[' + (group++) + ']||'
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| 20 | + JSON.stringify(qstr == null ? token : qstr)
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| 21 | + ':m[' + group + '])'
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| 22 | return '(?=(?:"[^"]*"|[^,])*;\\s*' + key + '(=|\\*=utf-8\'\\w*\')("([^"]*)"|[^\\s,;]+)|)'
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| 23 | }
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| 24 | if (rule == ',') {
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| 25 | return ')|('
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| 26 | }
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| 27 | fnStr += (offset ? '}:m[' : 'm[') + (++group) + ']?{rule:"' + rule + '",match:m[' + group + ']'
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| 28 | if (choices !== rules) {
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| 29 | fnStr += ',o:c[R[' + (ruleSeq++) + ']]'
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| 30 | }
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| 31 |
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| 32 | key = rule.match(/^(.+?)\/(.+?)(?:\+(.+))?$/)
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| 33 | rule = rule.replace(escapeRe, '\\$&')
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| 34 | if (key) {
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| 35 |
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| 36 | fnStr += ',type:' + capture(1, /(.*)\\\
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| 37 | + ',subtype:' + capture(2, /\/(.+?)(?=\\\+|$)/, '/($1)')
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| 38 | + ',suffix:' + capture(3, /\+(.+)/, '+($1)')
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| 39 | } else if (key = priority == 'lang' && rule.match(/^..(?=\-)/i)) {
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| 40 |
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| 41 |
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| 42 | if (!RegExp(key + '(?!-)', 'i').test(all)) {
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| 43 | rule = '(?:' + rule + '|' + key + '(?!.+' + rule + '))'
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| 44 | }
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| 45 | }
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| 46 | rule = rule.replace(/\*/g, '[^,;\\s\\/+]+?')
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| 47 |
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| 48 | return (offset ? rule : '(?:' + rule + '|[*\\/]+)') + add(0, 'q', 1)
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| 49 |
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| 50 | function capture(j, re, to) {
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| 51 | return /\*/.test(key[j]) ?
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| 52 | ((rule = rule.replace(re, to)), 'm[' + (++group) + ']') :
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| 53 | '"' + (key[j] || '') + '"'
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| 54 | }
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| 55 | }) +
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| 56 | '))\\s*(?=,|;|$)(?:"[^"]*"|[^,])*/gi;return function(i){var m,t,l={q:null};' +
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| 57 | (
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| 58 | group ?
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| 59 | fnStr.replace(/m\[\d+\]\?(?!.*m\[\d+\]\?)/, '') +
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| 60 | '});){t=1*m.q;if((m.q=t>=0&&t<1?t:1)>l.q' +
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| 61 | (priority && priority !== 'lang' ? priority : '') +
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| 62 | ')l=m}' : ''
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| 63 | ) +
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| 64 | 'return l}'
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| 65 | )(choices, rules, function(op, str) {
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| 66 | try {
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| 67 | str = decodeURIComponent(str)
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| 68 | } catch (e) {}
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| 69 | return str
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| 70 | })
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| 71 | }
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| 72 |
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