Docs

1 files changed, 113 insertions, 0 deletions

diff --git a/node_modules/chroma/index.js b/node_modules/chroma/index.js
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+var
+	util = require('util'),
+	color_map = [
+		'black',
+		'red',
+		'green',
+		'yellow',
+		'blue',
+		'magenta',
+		'cyan',
+		'white'
+	],
+	color_weights = [
+		[0, 0, 0],
+		[255, 0, 0],
+		[0, 255, 0],
+		[255, 255, 0],
+		[0, 0, 255],
+		[255, 0, 255],
+		[0, 255, 255],
+		[255, 255, 255]
+	],
+	reset = '\x1b[30m';
+
+function hex_to_rgb ( hex ) {
+	var
+		base_16;
+
+	if ( hex.indexOf('#') === 0 ) {
+		hex = hex.slice(1);
+	}
+	base_16 = parseInt(hex, 16);
+	if ( isNaN(base_16) ) {
+		base_16 = 0;
+	}
+	return [
+		( base_16 >> 16 ) & 255,
+		( base_16 >> 8 ) & 255,
+		base_16 & 255
+	];
+}
+
+function get_fitness ( source, target ) {
+	return Math.abs(source - target);
+}
+
+function get_closest_color ( red, green, blue ) {
+	var
+		current_color,
+		best_color = null,
+		current_fit,
+		best_fit = 765,
+		index = color_map.length;
+
+	while ( index -- ) {
+		current_color = color_weights [index];
+		current_fit = get_fitness(red, current_color [0]) + get_fitness(green, current_color [1]) + get_fitness(blue, current_color [2]);
+		if ( current_fit <= best_fit ) {
+			best_fit = current_fit;
+			best_color = color_map [index];
+		}
+	}
+	return best_color;
+}
+
+function generate ( color ) {
+	var
+		resolved_color,
+		index;
+
+	function colorize ( text ) {
+		if ( typeof text !== 'string' ) {
+			text = util.format(text);
+		}
+		return resolved_color + text + reset;
+	}
+
+	index = color_map.indexOf(color);
+	if ( index !== -1 ) {
+		resolved_color = '\x1b[3' + index + 'm';
+	}
+	else {
+		resolved_color = reset;
+	}
+
+	return colorize;
+}
+
+function create_color ( color, green, blue ) {
+	var
+		index,
+		resolved_color;
+
+	if ( typeof color === 'string' ) {
+		if ( color [0] === '#' ) {
+			resolved_color = get_closest_color.apply(null, hex_to_rgb(color));
+		}
+	}
+	else if ( typeof color === 'number' ) {
+		resolved_color = get_closest_color(color, green, blue);
+	}
+	else {
+		resolved_color = reset;
+	}
+	
+	return generate(resolved_color);
+}
+
+color_map.map(function ( item ) {
+	create_color [item] = generate(item);
+});
+
+module.exports = create_color;