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define(function () { |
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'use strict'; |
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/* |
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reimplate after node-deb-version-compare under MIT |
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(https://github.com/sdumetz/node-deb-version-compare) |
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*/ |
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function Version(v) { |
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var version = /^[a-zA-Z]?([0-9]*(?=:))?:(.*)/.exec(v); |
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this.epoch = (version) ? version[1] : 0; |
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version = (version && version[2]) ? version[2] : v; |
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version = version.split('-'); |
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this.debian = (version.length > 1) ? version.pop() : ''; |
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this.upstream = version.join('-'); |
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} |
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Version.prototype.compare = function (b) { |
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if ((this.epoch > 0 || b.epoch > 0) && Math.sign(this.epoch - b.epoch) !== 0) { |
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return Math.sign(this.epoch - b.epoch); |
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} |
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if (this.compareStrings(this.upstream, b.upstream) !== 0) { |
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return this.compareStrings(this.upstream, b.upstream); |
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} |
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return this.compareStrings(this.debian, b.debian); |
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}; |
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Version.prototype.charCode = function (c) { // the lower the charcode the lower the version. |
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// if (c === '~') {return 0;} // tilde sort before anything |
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// else |
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if (/[a-zA-Z]/.test(c)) { |
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return c.charCodeAt(0) - 'A'.charCodeAt(0) + 1; |
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} else if (/[.:+-:]/.test(c)) { |
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return c.charCodeAt(0) + 'z'.charCodeAt(0) + 1; |
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} // charcodes are 46..58 |
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return 0; |
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}; |
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// find index of "val" in "ar". |
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Version.prototype.findIndex = function (ar, fn) { |
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for (var i = 0; i < ar.length; i++) { |
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if (fn(ar[i], i)) { |
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return i; |
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} |
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} |
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return -1; |
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}; |
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Version.prototype.compareChunk = function (a, b) { |
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var ca = a.split(''); |
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var cb = b.split(''); |
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var diff = this.findIndex(ca, function (c, index) { |
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if (cb[index] && c === cb[index]) { |
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return false; |
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} |
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return true; |
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}); |
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if (diff === -1) { |
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if (cb.length > ca.length) { |
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if (cb[ca.length] === '~') { |
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return 1; |
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} |
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return -1; |
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} |
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return 0; // no diff found and same length |
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} else if (!cb[diff]) { |
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return (ca[diff] === '~') ? -1 : 1; |
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} |
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return (this.charCode(ca[diff]) > this.charCode(cb[diff])) ? 1 : -1; |
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}; |
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Version.prototype.compareStrings = function (a, b) { |
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if (a === b) { |
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return 0; |
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} |
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var parseA = /([^0-9]+|[0-9]+)/g; |
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var parseB = /([^0-9]+|[0-9]+)/g; |
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var ra = parseA.exec(a); |
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var rb = parseB.exec(b); |
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while (ra !== null && rb !== null) { |
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if ((isNaN(ra[1]) || isNaN(rb[1])) && ra[1] !== rb[1]) { // a or b is not a number and they're not equal. Note : "" IS a number so both null is impossible |
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return this.compareChunk(ra[1], rb[1]); |
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} // both are numbers |
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if (ra[1] !== rb[1]) { |
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return (parseInt(ra[1], 10) > parseInt(rb[1], 10)) ? 1 : -1; |
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} |
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ra = parseA.exec(a); |
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rb = parseB.exec(b); |
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} |
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if (!ra && rb) { // rb doesn't get exec-ed when ra == null |
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return (parseB.exec(b)[1].split('')[0] === '~') ? 1 : -1; |
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} else if (ra && !rb) { |
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return (ra[1].split('')[0] === '~') ? -1 : 1; |
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} |
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return 0; |
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}; |
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return function compare(a, b) { |
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var va = new Version(a[0]); |
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var vb = new Version(b[0]); |
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return vb.compare(va); |
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}; |
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}); |
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ffrgb /
meshviewer
