/**
* Function that attempts to return the kind of CPU.
* @return string CPU kind ('amd', 'intel' or 'ppc').
*/
protected static function _getCPU()
{
if (self::$_cpu == '') {
switch (self::_getOS()) {
case 'lin':
// TODO: use uname -m or -a, by the way, this is about 32bit vs 64bit not amd vs intel!
if (`grep -i amd /proc/cpuinfo` != '') {
self::$_cpu = 'amd';
} elseif (`grep -i intel /proc/cpuinfo` != '') {
self::$_cpu = 'intel';
}
break;
case 'osx':
// TODO: use uname -m or -a
if (`machine | grep -i ppc` != '') {
self::$_cpu = 'ppc';
} elseif (`machine | grep -i i` != '') {
self::$_cpu = 'intel';
}
break;
case 'win':
$cpu = strtolower(getenv('PROCESSOR_IDENTIFIER'));
if (strpos($cpu, 'intel') !== false) {
self::$_cpu = 'intel';
}
if (strpos($cpu, 'amd') !== false) {
self::$_cpu = 'amd';
}
break;
default:
throw new Exception('WKPDF CPU detection on ' . self::_getOS() . ' OS not supported.');
break;
}
if (self::$_cpu == '') {
throw new Exception('WKPDF couldn\'t determine CPU (' . self::_getOS() . ' OS).');
}
}
return self::$_cpu;
}
private static function _getCPU()
{
if (self::$_cpu == '') {
$arch = `uname -m`;
if (preg_match("/^x(86_)*64\$/", $arch)) {
self::$_cpu = 'amd64';
} elseif (preg_match("/^(i[3-6]|x)86\$/", $arch)) {
self::$_cpu = 'i386';
} else {
throw new Exception('WKPDF couldn\'t determine CPU ("' . `grep -i vendor_id /proc/cpuinfo` . '").');
}
}
return self::$_cpu;
}