Current File : //usr/lib/node_modules/npm/node_modules/gauge/lib/wide-truncate.js
'use strict'
var stringWidth = require('string-width')
var stripAnsi = require('strip-ansi')
module.exports = wideTruncate
function wideTruncate (str, target) {
if (stringWidth(str) === 0) {
return str
}
if (target <= 0) {
return ''
}
if (stringWidth(str) <= target) {
return str
}
// We compute the number of bytes of ansi sequences here and add
// that to our initial truncation to ensure that we don't slice one
// that we want to keep in half.
var noAnsi = stripAnsi(str)
var ansiSize = str.length + noAnsi.length
var truncated = str.slice(0, target + ansiSize)
// we have to shrink the result to account for our ansi sequence buffer
// (if an ansi sequence was truncated) and double width characters.
while (stringWidth(truncated) > target) {
truncated = truncated.slice(0, -1)
}
return truncated
}
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