| 1 | 'use strict';
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| 2 |
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| 3 | exports = module.exports = cliWidth;
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| 4 |
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| 5 | function normalizeOpts(options) {
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| 6 | var defaultOpts = {
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| 7 | defaultWidth: 0,
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| 8 | output: process.stdout,
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| 9 | tty: require('tty')
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| 10 | };
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| 11 | if (!options) {
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| 12 | return defaultOpts;
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| 13 | } else {
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| 14 | Object.keys(defaultOpts).forEach(function (key) {
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| 15 | if (!options[key]) {
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| 16 | options[key] = defaultOpts[key];
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| 17 | }
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| 18 | });
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| 19 | return options;
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| 20 | }
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| 21 | }
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| 22 |
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| 23 | function cliWidth(options) {
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| 24 | var opts = normalizeOpts(options);
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| 25 | if (opts.output.getWindowSize) {
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| 26 | return opts.output.getWindowSize()[0] || opts.defaultWidth;
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| 27 | }
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| 28 | else {
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| 29 | if (opts.tty.getWindowSize) {
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| 30 | return opts.tty.getWindowSize()[1] || opts.defaultWidth;
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| 31 | }
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| 32 | else {
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| 33 | if (opts.output.columns) {
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| 34 | return opts.output.columns;
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| 35 | }
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| 36 | else {
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| 37 | if (process.env.CLI_WIDTH) {
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| 38 | var width = parseInt(process.env.CLI_WIDTH, 10);
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| 39 |
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| 40 | if (!isNaN(width)) {
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| 41 | return width;
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| 42 | }
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| 43 | }
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| 44 | }
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| 45 |
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| 46 | return opts.defaultWidth;
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| 47 | }
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| 48 | }
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| 49 | };
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