73 lines
1.8 KiB
JavaScript
73 lines
1.8 KiB
JavaScript
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'use strict';
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const {execFileSync} = require('child_process');
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const path = require('path');
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const exec = (command, arguments_, shell) => execFileSync(command, arguments_, {encoding: 'utf8', shell}).trim();
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const create = (columns, rows) => ({
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columns: parseInt(columns, 10),
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rows: parseInt(rows, 10)
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});
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module.exports = () => {
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const {env, stdout, stderr} = process;
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if (stdout && stdout.columns && stdout.rows) {
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return create(stdout.columns, stdout.rows);
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}
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if (stderr && stderr.columns && stderr.rows) {
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return create(stderr.columns, stderr.rows);
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}
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// These values are static, so not the first choice
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if (env.COLUMNS && env.LINES) {
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return create(env.COLUMNS, env.LINES);
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}
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if (process.platform === 'win32') {
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try {
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// Binary: https://github.com/sindresorhus/win-term-size
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const size = exec(path.join(__dirname, 'vendor/windows/term-size.exe')).split(/\r?\n/);
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if (size.length === 2) {
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return create(size[0], size[1]);
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}
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} catch (_) {}
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} else {
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if (process.platform === 'darwin') {
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try {
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// Binary: https://github.com/sindresorhus/macos-term-size
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const size = exec(path.join(__dirname, 'vendor/macos/term-size'), [], true).split(/\r?\n/);
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if (size.length === 2) {
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return create(size[0], size[1]);
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}
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} catch (_) {}
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}
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// `resize` is preferred as it works even when all file descriptors are redirected
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// https://linux.die.net/man/1/resize
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try {
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const size = exec('resize', ['-u']).match(/\d+/g);
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if (size.length === 2) {
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return create(size[0], size[1]);
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}
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} catch (_) {}
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if (process.env.TERM) {
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try {
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const columns = exec('tput', ['cols']);
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const rows = exec('tput', ['lines']);
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if (columns && rows) {
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return create(columns, rows);
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}
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} catch (_) {}
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}
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}
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return create(80, 24);
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};
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