61 lines
1.2 KiB
JavaScript
61 lines
1.2 KiB
JavaScript
define([], function () {
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function order(c) {
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if (/^\d$/.test(c))
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return 0;
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else if (/^[a-z]$/i.test(c))
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return c.charCodeAt(0);
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else if (c === "~")
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return -1;
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else if (c)
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return c.charCodeAt(0) + 256;
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else
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return 0;
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}
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// Based on dpkg code
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function vercomp(a, b) {
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var apos = 0, bpos = 0;
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while (apos < a.length || bpos < b.length) {
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var firstDiff = 0;
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while ((apos < a.length && !/^\d$/.test(a[apos])) || (bpos < b.length && !/^\d$/.test(b[bpos]))) {
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var ac = order(a[apos]);
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var bc = order(b[bpos]);
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if (ac !== bc)
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return ac - bc;
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apos++;
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bpos++;
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}
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while (a[apos] === "0")
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apos++;
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while (b[bpos] === "0")
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bpos++;
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while (/^\d$/.test(a[apos]) && /^\d$/.test(b[bpos])) {
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if (firstDiff === 0)
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firstDiff = a.charCodeAt(apos) - b.charCodeAt(bpos);
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apos++;
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bpos++;
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}
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if (/^\d$/.test(a[apos]))
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return 1;
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if (/^\d$/.test(b[bpos]))
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return -1;
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if (firstDiff !== 0)
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return firstDiff;
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}
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return 0;
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}
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return vercomp;
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});
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