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Diffstat (limited to 'node_modules/boxen/index.js')
-rw-r--r-- | node_modules/boxen/index.js | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/node_modules/boxen/index.js b/node_modules/boxen/index.js new file mode 100644 index 000000000..2233e3d7b --- /dev/null +++ b/node_modules/boxen/index.js @@ -0,0 +1,138 @@ +'use strict'; +const stringWidth = require('string-width'); +const chalk = require('chalk'); +const widestLine = require('widest-line'); +const cliBoxes = require('cli-boxes'); +const camelCase = require('camelcase'); +const ansiAlign = require('ansi-align'); +const termSize = require('term-size'); + +const getObject = detail => { + let obj; + + if (typeof detail === 'number') { + obj = { + top: detail, + right: detail * 3, + bottom: detail, + left: detail * 3 + }; + } else { + obj = Object.assign({ + top: 0, + right: 0, + bottom: 0, + left: 0 + }, detail); + } + + return obj; +}; + +const getBorderChars = borderStyle => { + const sides = [ + 'topLeft', + 'topRight', + 'bottomRight', + 'bottomLeft', + 'vertical', + 'horizontal' + ]; + + let chars; + + if (typeof borderStyle === 'string') { + chars = cliBoxes[borderStyle]; + + if (!chars) { + throw new TypeError(`Invalid border style: ${borderStyle}`); + } + } else { + sides.forEach(key => { + if (!borderStyle[key] || typeof borderStyle[key] !== 'string') { + throw new TypeError(`Invalid border style: ${key}`); + } + }); + + chars = borderStyle; + } + + return chars; +}; + +const getBackgroundColorName = x => camelCase('bg', x); + +module.exports = (text, opts) => { + opts = Object.assign({ + padding: 0, + borderStyle: 'single', + dimBorder: false, + align: 'left', + float: 'left' + }, opts); + + if (opts.backgroundColor) { + opts.backgroundColor = getBackgroundColorName(opts.backgroundColor); + } + + if (opts.borderColor && !chalk[opts.borderColor]) { + throw new Error(`${opts.borderColor} is not a valid borderColor`); + } + + if (opts.backgroundColor && !chalk[opts.backgroundColor]) { + throw new Error(`${opts.backgroundColor} is not a valid backgroundColor`); + } + + const chars = getBorderChars(opts.borderStyle); + const padding = getObject(opts.padding); + const margin = getObject(opts.margin); + + const colorizeBorder = x => { + const ret = opts.borderColor ? chalk[opts.borderColor](x) : x; + return opts.dimBorder ? chalk.dim(ret) : ret; + }; + + const colorizeContent = x => opts.backgroundColor ? chalk[opts.backgroundColor](x) : x; + + text = ansiAlign(text, {align: opts.align}); + + const NL = '\n'; + const PAD = ' '; + + let lines = text.split(NL); + + if (padding.top > 0) { + lines = Array(padding.top).fill('').concat(lines); + } + + if (padding.bottom > 0) { + lines = lines.concat(Array(padding.bottom).fill('')); + } + + const contentWidth = widestLine(text) + padding.left + padding.right; + const paddingLeft = PAD.repeat(padding.left); + const columns = termSize().columns; + let marginLeft = PAD.repeat(margin.left); + + if (opts.float === 'center') { + const padWidth = (columns - contentWidth) / 2; + marginLeft = PAD.repeat(padWidth); + } else if (opts.float === 'right') { + const padWidth = Math.max(columns - contentWidth - 2, 0); + marginLeft = PAD.repeat(padWidth); + } + + const horizontal = chars.horizontal.repeat(contentWidth); + const top = colorizeBorder(NL.repeat(margin.top) + marginLeft + chars.topLeft + horizontal + chars.topRight); + const bottom = colorizeBorder(marginLeft + chars.bottomLeft + horizontal + chars.bottomRight + NL.repeat(margin.bottom)); + const side = colorizeBorder(chars.vertical); + + const middle = lines.map(line => { + const paddingRight = PAD.repeat(contentWidth - stringWidth(line) - padding.left); + return marginLeft + side + colorizeContent(paddingLeft + line + paddingRight) + side; + }).join(NL); + + return top + NL + middle + NL + bottom; +}; + +module.exports._borderStyles = cliBoxes; |