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usr
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lib
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node_modules
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npm
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node_modules
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wide-align
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Filename :
align.js
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'use strict' var stringWidth = require('string-width') exports.center = alignCenter exports.left = alignLeft exports.right = alignRight // lodash's way of generating pad characters. function createPadding (width) { var result = '' var string = ' ' var n = width do { if (n % 2) { result += string; } n = Math.floor(n / 2); string += string; } while (n); return result; } function alignLeft (str, width) { var trimmed = str.trimRight() if (trimmed.length === 0 && str.length >= width) return str var padding = '' var strWidth = stringWidth(trimmed) if (strWidth < width) { padding = createPadding(width - strWidth) } return trimmed + padding } function alignRight (str, width) { var trimmed = str.trimLeft() if (trimmed.length === 0 && str.length >= width) return str var padding = '' var strWidth = stringWidth(trimmed) if (strWidth < width) { padding = createPadding(width - strWidth) } return padding + trimmed } function alignCenter (str, width) { var trimmed = str.trim() if (trimmed.length === 0 && str.length >= width) return str var padLeft = '' var padRight = '' var strWidth = stringWidth(trimmed) if (strWidth < width) { var padLeftBy = parseInt((width - strWidth) / 2, 10) padLeft = createPadding(padLeftBy) padRight = createPadding(width - (strWidth + padLeftBy)) } return padLeft + trimmed + padRight }