scripts/node_modules/ansi-align/index.js

62 lines
1.3 KiB
JavaScript

'use strict'
const stringWidth = require('string-width')
function ansiAlign (text, opts) {
if (!text) return text
opts = opts || {}
const align = opts.align || 'center'
// short-circuit `align: 'left'` as no-op
if (align === 'left') return text
const split = opts.split || '\n'
const pad = opts.pad || ' '
const widthDiffFn = align !== 'right' ? halfDiff : fullDiff
let returnString = false
if (!Array.isArray(text)) {
returnString = true
text = String(text).split(split)
}
let width
let maxWidth = 0
text = text.map(function (str) {
str = String(str)
width = stringWidth(str)
maxWidth = Math.max(width, maxWidth)
return {
str,
width
}
}).map(function (obj) {
return new Array(widthDiffFn(maxWidth, obj.width) + 1).join(pad) + obj.str
})
return returnString ? text.join(split) : text
}
ansiAlign.left = function left (text) {
return ansiAlign(text, { align: 'left' })
}
ansiAlign.center = function center (text) {
return ansiAlign(text, { align: 'center' })
}
ansiAlign.right = function right (text) {
return ansiAlign(text, { align: 'right' })
}
module.exports = ansiAlign
function halfDiff (maxWidth, curWidth) {
return Math.floor((maxWidth - curWidth) / 2)
}
function fullDiff (maxWidth, curWidth) {
return maxWidth - curWidth
}