71 lines
2.4 KiB
JavaScript
71 lines
2.4 KiB
JavaScript
'use strict';
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var d = require('d')
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, assign = require('es5-ext/object/assign')
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, forEach = require('es5-ext/object/for-each')
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, map = require('es5-ext/object/map')
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, primitiveSet = require('es5-ext/object/primitive-set')
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, setPrototypeOf = require('es5-ext/object/set-prototype-of')
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, memoize = require('memoizee')
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, memoizeMethods = require('memoizee/methods')
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, sgr = require('./lib/sgr')
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, mods = sgr.mods
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, join = Array.prototype.join, defineProperty = Object.defineProperty
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, max = Math.max, min = Math.min
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, variantModes = primitiveSet('_fg', '_bg')
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, xtermMatch, getFn;
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// Some use cli-color as: console.log(clc.red('Error!'));
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// Which is inefficient as on each call it configures new clc object
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// with memoization we reuse once created object
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var memoized = memoize(function (scope, mod) {
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return defineProperty(getFn(), '_cliColorData', d(assign({}, scope._cliColorData, mod)));
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});
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var proto = Object.create(Function.prototype, assign(map(mods, function (mod) {
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return d.gs(function () { return memoized(this, mod); });
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}), memoizeMethods({
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// xterm (255) color
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xterm: d(function (code) {
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code = isNaN(code) ? 255 : min(max(code, 0), 255);
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return defineProperty(getFn(), '_cliColorData',
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d(assign({}, this._cliColorData, {
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_fg: [xtermMatch ? xtermMatch[code] : ('38;5;' + code), 39]
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})));
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}),
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bgXterm: d(function (code) {
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code = isNaN(code) ? 255 : min(max(code, 0), 255);
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return defineProperty(getFn(), '_cliColorData',
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d(assign({}, this._cliColorData, {
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_bg: [xtermMatch ? (xtermMatch[code] + 10) : ('48;5;' + code), 49]
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})));
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})
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})));
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var getEndRe = memoize(function (code) {
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return new RegExp('\x1b\\[' + code + 'm', 'g');
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}, { primitive: true });
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if (process.platform === 'win32') xtermMatch = require('./lib/xterm-match');
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getFn = function () {
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return setPrototypeOf(function self(/*…msg*/) {
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var start = '', end = '', msg = join.call(arguments, ' '), conf = self._cliColorData
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, hasAnsi = sgr.hasCSI(msg);
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forEach(conf, function (mod, key) {
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end = sgr(mod[1]) + end;
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start += sgr(mod[0]);
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if (hasAnsi) {
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msg = msg.replace(getEndRe(mod[1]), variantModes[key] ? sgr(mod[0]) : '');
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}
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}, null, true);
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return start + msg + end;
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}, proto);
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};
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module.exports = Object.defineProperties(getFn(), {
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xtermSupported: d(!xtermMatch),
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_cliColorData: d('', {})
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});
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