관리-도구
편집 파일: index.js
'use strict'; const stringWidth = require('string-width'); const stripAnsi = require('strip-ansi'); const concat = Array.prototype.concat; const defaults = { character: ' ', newline: '\n', padding: 2, sort: true, width: 0 }; function byPlainText(a, b) { const plainA = stripAnsi(a); const plainB = stripAnsi(b); if (plainA === plainB) { return 0; } if (plainA > plainB) { return 1; } return -1; } function makeArray() { return []; } function makeList(count) { return Array.apply(null, Array(count)); } function padCell(fullWidth, character, value) { const valueWidth = stringWidth(value); const filler = makeList(fullWidth - valueWidth + 1); return value + filler.join(character); } function toRows(rows, cell, i) { rows[i % rows.length].push(cell); return rows; } function toString(arr) { return arr.join(''); } function columns(values, options) { values = concat.apply([], values); options = Object.assign({}, defaults, options); let cells = values .filter(Boolean) .map(String); if (options.sort !== false) { cells = cells.sort(byPlainText); } const termWidth = options.width || process.stdout.columns; const cellWidth = Math.max.apply(null, cells.map(stringWidth)) + options.padding; const columnCount = Math.floor(termWidth / cellWidth) || 1; const rowCount = Math.ceil(cells.length / columnCount) || 1; if (columnCount === 1) { return cells.join(options.newline); } return cells .map(padCell.bind(null, cellWidth, options.character)) .reduce(toRows, makeList(rowCount).map(makeArray)) .map(toString) .join(options.newline); } module.exports = columns;