38 lines
805 B
JavaScript
38 lines
805 B
JavaScript
'use strict'
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module.exports = function (str) {
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var offset = 0
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str = str.toString()
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return iterator
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function iterator () {
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var i1 = str.indexOf('\r\n', offset)
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var i2 = str.indexOf('\n', offset)
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var i3 = str.indexOf('\r', offset)
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var indexes = [i1, i2, i3]
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var index = indexes
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.sort(function (a, b) {
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if (a > b) return 1
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if (a < b) return -1
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return 0
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})
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.filter(function (index) {
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return index !== -1
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})[0]
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if (index !== undefined) return extract(index, index === i1 ? 2 : 1)
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var length = str.length
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if (length === offset) return null
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return extract(length, 0)
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}
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function extract (index, skip) {
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var line = str.substr(offset, index - offset)
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offset = index + skip
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return line
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}
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}
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