@fontoxml/fontoxml-development-tools/src/response/primitives.js

const os = require('os');
const wrapAnsi = require('wrap-ansi');
const chalk = require('chalk');

function getTerminalWidth() {
	return process.stdout.columns;
}

function wrap(str, width) {
	return wrapAnsi(str, width, { hard: true, trim: false });
}

function indentString(string, indentationLeft, indentationRight, screenWidth) {
	if (indentationLeft === undefined) indentationLeft = '    ';

	if (indentationRight === undefined) indentationRight = indentationLeft;

	if (screenWidth === Infinity) return indentationLeft + string + indentationRight;

	if (!screenWidth) screenWidth = getTerminalWidth();

	return string
		.split(os.EOL)
		.map(line =>
			wrap(line, screenWidth - indentationLeft.length - indentationRight.length)
				.split(os.EOL)
				.map(function(wrappedLine) {
					return indentationLeft + wrappedLine + indentationRight;
				})
				.join(os.EOL)
		)
		.join(os.EOL);
}

function fillString(stringLength, char) {
	return new Array(stringLength).join(char || ' ');
}

function padString(string, stringLength, char) {
	return (
		string +
		fillString(Math.max((stringLength || 0) - (string.length || 0) + 1, 0), char || ' ')
	);
}

function formatString(string, formatting) {
	if (!formatting) return string;

	return formatting.reduce((c, formattingOption) => c[formattingOption], chalk)(string);
}

function getLeftIndentationString(indentation, indentationLevel) {
	let str = '';
	for (let i = 0; i < indentationLevel; ++i) {
		str += indentation;
	}
	return str;
}

module.exports = {
	wrap: wrap,
	formatString: formatString,
	indentString: indentString,
	padString: padString,
	fillString: fillString,
	getLeftIndentationString: getLeftIndentationString,
	getTerminalWidth: getTerminalWidth
};