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<?php
// +----------------------------------------------------------------------
// | TopThink [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2015 http://www.topthink.com All rights reserved.
// +----------------------------------------------------------------------
// | Author: zhangyajun <448901948@qq.com>
// +----------------------------------------------------------------------
namespace think\process;
class Utils
{
/**
* 转义字符串
* @param string $argument
* @return string
*/
public static function escapeArgument($argument)
{
if ('' === $argument) {
return escapeshellarg($argument);
}
$escapedArgument = '';
$quote = false;
foreach (preg_split('/(")/i', $argument, -1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE) as $part) {
if ('"' === $part) {
$escapedArgument .= '\\"';
} elseif (self::isSurroundedBy($part, '%')) {
// Avoid environment variable expansion
$escapedArgument .= '^%"' . substr($part, 1, -1) . '"^%';
} else {
// escape trailing backslash
if ('\\' === substr($part, -1)) {
$part .= '\\';
}
$quote = true;
$escapedArgument .= $part;
}
}
if ($quote) {
$escapedArgument = '"' . $escapedArgument . '"';
}
return $escapedArgument;
}
/**
* 验证并进行规范化Process输入。
* @param string $caller
* @param mixed $input
* @return string
* @throws \InvalidArgumentException
*/
public static function validateInput($caller, $input)
{
if (null !== $input) {
if (is_resource($input)) {
return $input;
}
if (is_scalar($input)) {
return (string) $input;
}
throw new \InvalidArgumentException(sprintf('%s only accepts strings or stream resources.', $caller));
}
return $input;
}
private static function isSurroundedBy($arg, $char)
{
return 2 < strlen($arg) && $char === $arg[0] && $char === $arg[strlen($arg) - 1];
}
}