mirror of
https://github.com/status-im/react-native.git
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db3a00d58c
Summary:As far as we agreed to merge `rnpm` into react-native core, we need to align our dependencies to exclude duplications. One of the steps forward would be to use the same utilities library. According to the thread on fb, everybody is fine with replacing underscore by lodash (which we use internally for rnpm). So, here we go! cc mkonicek davidaurelio grabbou **Test plan** ``` $ npm test ```  **Code formatting** Changes are aligned with the current [style guide](https://github.com/facebook/react-native/blob/master/CONTRIBUTING.md#style-guide). Closes https://github.com/facebook/react-native/pull/6030 Differential Revision: D3016271 Pulled By: davidaurelio fb-gh-sync-id: c4f6776a7de7470283d3ca5a8b56e423247f5e45 shipit-source-id: c4f6776a7de7470283d3ca5a8b56e423247f5e45
109 lines
3.3 KiB
JavaScript
109 lines
3.3 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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'use strict';
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var _ = require('lodash');
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var wordwrap = require('wordwrap');
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var HORIZONTAL_LINE = '\u2500';
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var VERTICAL_LINE = '\u2502';
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var TOP_LEFT = '\u250c';
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var TOP_RIGHT = '\u2510';
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var BOTTOM_LEFT = '\u2514';
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var BOTTOM_RIGHT = '\u2518';
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/**
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* Prints a banner with a border around it containing the given message. The
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* following options are supported:
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*
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* type Options = {
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* // A function to apply to each line of text to decorate it
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* chalkFunction: (string: message) => string;
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* // The total width (max line length) of the banner, including margin and
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* // padding (default = 80)
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* width: number;
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* // How much leading space to prepend to each line (default = 0)
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* marginLeft: number;
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* // How much trailing space to append to each line (default = 0)
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* marginRight: number;
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* // Space between the top banner border and the text (default = 0)
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* paddingTop: number;
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* // Space between the bottom banner border and the text (default = 0)
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* paddingBottom: number;
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* // Space between the left banner border and the text (default = 2)
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* paddingLeft: number;
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* // Space between the right banner border and the text (default = 2)
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* paddingRight: number;
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* };
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*/
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function formatBanner(message, options) {
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options = options || {};
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_.defaults(options, {
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chalkFunction: (fn) => fn,
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width: 80,
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marginLeft: 0,
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marginRight: 0,
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paddingTop: 0,
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paddingBottom: 0,
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paddingLeft: 2,
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paddingRight: 2,
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});
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var width = options.width;
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var marginLeft = options.marginLeft;
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var marginRight = options.marginRight;
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var paddingTop = options.paddingTop;
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var paddingBottom = options.paddingBottom;
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var paddingLeft = options.paddingLeft;
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var paddingRight = options.paddingRight;
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var horizSpacing = marginLeft + paddingLeft + paddingRight + marginRight;
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// 2 for the banner borders
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var maxLineWidth = width - horizSpacing - 2;
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var wrap = wordwrap(maxLineWidth);
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var body = wrap(message);
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var left = spaces(marginLeft) + VERTICAL_LINE + spaces(paddingLeft);
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var right = spaces(paddingRight) + VERTICAL_LINE + spaces(marginRight);
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var bodyLines = _.flattenDeep([
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arrayOf('', paddingTop),
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body.split('\n'),
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arrayOf('', paddingBottom),
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]).map(function(line) {
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var padding = spaces(Math.max(0, maxLineWidth - line.length));
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return left + options.chalkFunction(line) + padding + right;
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});
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var horizontalBorderLine = repeatString(
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HORIZONTAL_LINE,
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width - marginLeft - marginRight - 2
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);
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var top = spaces(marginLeft) + TOP_LEFT + horizontalBorderLine + TOP_RIGHT +
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spaces(marginRight);
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var bottom = spaces(marginLeft) + BOTTOM_LEFT + horizontalBorderLine +
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BOTTOM_RIGHT + spaces(marginRight);
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return _.flattenDeep([top, bodyLines, bottom]).join('\n');
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}
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function spaces(number) {
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return repeatString(' ', number);
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}
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function repeatString(string, number) {
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return new Array(number + 1).join(string);
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}
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function arrayOf(value, number) {
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return _.range(number).map(function() {
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return value;
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});
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}
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module.exports = formatBanner;
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