Utilities.js

// Written by Jürgen Moßgraber - mossgrabers.de
// (c) 2014
// Licensed under GPLv3 - http://www.gnu.org/licenses/gpl.html

function toggleValue (value)
{
	return !value;
}

function doObject (object, f)
{
	return function ()
	{
		f.apply (object, arguments);
	};
}

function doIndex (index, f)
{
	return function ()
	{
		var args = [index];
		for (var i = 0; i < arguments.length; i++)
			args[i + 1] = arguments[i];
		f.apply (null, args);
	};
}

function doDoubleIndex (index1, index2, f)
{
	return function ()
	{
		var args = [index1, index2];
		for (var i = 0; i < arguments.length; i++)
			args[i + 2] = arguments[i];
		f.apply (null, args);
	};
}

function toHexStr (data)
{
	var sysex = "";
	for (i in data)
	{
		var v = data[i].toString(16).toUpperCase();
		if (v.length < 2)
			v = '0' + v;
		sysex += v + ' ';
	}
	return sysex;
}

var REMOVABLE_CHARS = [' ', 'e', 'a', 'u', 'i'];
function optimizeName (name, length)
{
	if (!name)
		return '';
	
	for (var i = 0; i < REMOVABLE_CHARS.length; i++)
	{
		if (name.length <= length)
			return name;
		var pos = -1;
		while ((pos = name.indexOf (REMOVABLE_CHARS[i])) != -1)
		{
			name = name.substring (0, pos) + name.substring (pos + 1, name.length);
			if (name.length <= length)
				return name;
		}
	}
	return name;
}