60 lines
1.4 KiB
JavaScript
60 lines
1.4 KiB
JavaScript
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/**
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* Repeats a string.
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*
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* @param {String} char(s)
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* @param {Number} number of times
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* @return {String} repeated string
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*/
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exports.repeat = function (str, times) {
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return Array(times + 1).join(str)
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}
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/**
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* Truncates a string
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*
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* @api public
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*/
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exports.truncate = function (str, length, chr) {
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chr = chr || '…'
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return str.length >= length ? str.substr(0, length - chr.length) + chr : str
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}
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/**
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* Copies and merges options with defaults.
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*
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* @param {Object} defaults
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* @param {Object} supplied options
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* @return {Object} new (merged) object
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*/
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function options (defaults, opts) {
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for (var p in opts) {
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if (opts[p] && opts[p].constructor && opts[p].constructor === Object) {
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defaults[p] = defaults[p] || {}
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options(defaults[p], opts[p])
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} else {
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defaults[p] = opts[p]
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}
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}
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return defaults
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};
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exports.options = options
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//
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// For consideration of terminal "color" programs like colors.js,
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// which can add ANSI escape color codes to strings,
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// we destyle the ANSI color escape codes for padding calculations.
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//
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// see: http://en.wikipedia.org/wiki/ANSI_escape_code
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//
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exports.strlen = function (str) {
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var code = /\u001b\[(?:\d*;){0,5}\d*m/g
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var stripped = ('' + (str != null ? str : '')).replace(code, '')
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var split = stripped.split('\n')
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return split.reduce(function (memo, s) { return (s.length > memo) ? s.length : memo }, 0)
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}
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