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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Polyfill\Php72;
/**
* @author Nicolas Grekas <p@tchwork.com>
* @author Dariusz Rumiński <dariusz.ruminski@gmail.com>
*
* @internal
*/
final class Php72
{
private static $hashMask;
public static function utf8_encode($s)
{
$s .= $s;
$len = \strlen($s);
for ($i = $len >> 1, $j = 0; $i < $len; ++$i, ++$j) {
switch (true) {
case $s[$i] < "\x80": $s[$j] = $s[$i]; break;
case $s[$i] < "\xC0": $s[$j] = "\xC2"; $s[++$j] = $s[$i]; break;
default: $s[$j] = "\xC3"; $s[++$j] = \chr(\ord($s[$i]) - 64); break;
}
}
return substr($s, 0, $j);
}
public static function utf8_decode($s)
{
$s = (string) $s;
$len = \strlen($s);
for ($i = 0, $j = 0; $i < $len; ++$i, ++$j) {
switch ($s[$i] & "\xF0") {
case "\xC0":
case "\xD0":
$c = (\ord($s[$i] & "\x1F") << 6) | \ord($s[++$i] & "\x3F");
$s[$j] = $c < 256 ? \chr($c) : '?';
break;
case "\xF0": ++$i;
case "\xE0":
$s[$j] = '?';
$i += 2;
break;
default:
$s[$j] = $s[$i];
}
}
return substr($s, 0, $j);
}
public static function php_os_family()
{
if ('\\' === DIRECTORY_SEPARATOR) {
return 'Windows';
}
$map = array(
'Darwin' => 'Darwin',
'DragonFly' => 'BSD',
'FreeBSD' => 'BSD',
'NetBSD' => 'BSD',
'OpenBSD' => 'BSD',
'Linux' => 'Linux',
'SunOS' => 'Solaris',
);
return isset($map[PHP_OS]) ? $map[PHP_OS] : 'Unknown';
}
public static function spl_object_id($object)
{
if (null === self::$hashMask) {
self::initHashMask();
}
if (null === $hash = spl_object_hash($object)) {
return;
}
return self::$hashMask ^ hexdec(substr($hash, 16 - \PHP_INT_SIZE, \PHP_INT_SIZE));
}
public static function sapi_windows_vt100_support($stream, $enable = null)
{
if (!\is_resource($stream)) {
trigger_error('sapi_windows_vt100_support() expects parameter 1 to be resource, '.gettype($stream).' given', E_USER_WARNING);
return false;
}
$meta = stream_get_meta_data($stream);
if ('STDIO' !== $meta['stream_type']) {
trigger_error('sapi_windows_vt100_support() was not able to analyze the specified stream', E_USER_WARNING);
return false;
}
// We cannot actually disable vt100 support if it is set
if (false === $enable || !self::stream_isatty($stream)) {
return false;
}
// The native function does not apply to stdin
$meta = array_map('strtolower', $meta);
$stdin = 'php://stdin' === $meta['uri'] || 'php://fd/0' === $meta['uri'];
return !$stdin
&& (false !== getenv('ANSICON')
|| 'ON' === getenv('ConEmuANSI')
|| 'xterm' === getenv('TERM')
|| 'Hyper' === getenv('TERM_PROGRAM'));
}
public static function stream_isatty($stream)
{
if (!\is_resource($stream)) {
trigger_error('stream_isatty() expects parameter 1 to be resource, '.gettype($stream).' given', E_USER_WARNING);
return false;
}
if ('\\' === DIRECTORY_SEPARATOR) {
$stat = @fstat($stream);
// Check if formatted mode is S_IFCHR
return $stat ? 0020000 === ($stat['mode'] & 0170000) : false;
}
return function_exists('posix_isatty') && @posix_isatty($stream);
}
private static function initHashMask()
{
$obj = (object) array();
self::$hashMask = -1;
// check if we are nested in an output buffering handler to prevent a fatal error with ob_start() below
$obFuncs = array('ob_clean', 'ob_end_clean', 'ob_flush', 'ob_end_flush', 'ob_get_contents', 'ob_get_flush');
foreach (debug_backtrace(\PHP_VERSION_ID >= 50400 ? DEBUG_BACKTRACE_IGNORE_ARGS : false) as $frame) {
if (isset($frame['function'][0]) && !isset($frame['class']) && 'o' === $frame['function'][0] && \in_array($frame['function'], $obFuncs)) {
$frame['line'] = 0;
break;
}
}
if (!empty($frame['line'])) {
ob_start();
debug_zval_dump($obj);
self::$hashMask = (int) substr(ob_get_clean(), 17);
}
self::$hashMask ^= hexdec(substr(spl_object_hash($obj), 16 - \PHP_INT_SIZE, \PHP_INT_SIZE));
}
}