123 lines
3.5 KiB
PHP
123 lines
3.5 KiB
PHP
<?php
|
|
|
|
namespace Dotenv\Regex;
|
|
|
|
use Dotenv\Result\Error;
|
|
use Dotenv\Result\Result;
|
|
use Dotenv\Result\Success;
|
|
use PhpOption\Option;
|
|
|
|
class Regex
|
|
{
|
|
/**
|
|
* Perform a preg match, wrapping up the result.
|
|
*
|
|
* @param string $pattern
|
|
* @param string $subject
|
|
*
|
|
* @return \Dotenv\Result\Result<int,string>
|
|
*/
|
|
public static function match($pattern, $subject)
|
|
{
|
|
return self::pregAndWrap(function ($subject) use ($pattern) {
|
|
return (int) @preg_match($pattern, $subject);
|
|
}, $subject);
|
|
}
|
|
|
|
/**
|
|
* Perform a preg replace, wrapping up the result.
|
|
*
|
|
* @param string $pattern
|
|
* @param string $replacement
|
|
* @param string $subject
|
|
* @param int|null $limit
|
|
*
|
|
* @return \Dotenv\Result\Result<string,string>
|
|
*/
|
|
public static function replace($pattern, $replacement, $subject, $limit = null)
|
|
{
|
|
return self::pregAndWrap(function ($subject) use ($pattern, $replacement, $limit) {
|
|
return (string) @preg_replace($pattern, $replacement, $subject, $limit === null ? -1 : $limit);
|
|
}, $subject);
|
|
}
|
|
|
|
/**
|
|
* Perform a preg replace callback, wrapping up the result.
|
|
*
|
|
* @param string $pattern
|
|
* @param callable $callback
|
|
* @param string $subject
|
|
* @param int|null $limit
|
|
*
|
|
* @return \Dotenv\Result\Result<string,string>
|
|
*/
|
|
public static function replaceCallback($pattern, callable $callback, $subject, $limit = null)
|
|
{
|
|
return self::pregAndWrap(function ($subject) use ($pattern, $callback, $limit) {
|
|
return (string) @preg_replace_callback($pattern, $callback, $subject, $limit === null ? -1 : $limit);
|
|
}, $subject);
|
|
}
|
|
|
|
/**
|
|
* Perform a preg split, wrapping up the result.
|
|
*
|
|
* @param string $pattern
|
|
* @param string $subject
|
|
*
|
|
* @return \Dotenv\Result\Result<string[],string>
|
|
*/
|
|
public static function split($pattern, $subject)
|
|
{
|
|
return self::pregAndWrap(function ($subject) use ($pattern) {
|
|
return (array) @preg_split($pattern, $subject);
|
|
}, $subject);
|
|
}
|
|
|
|
/**
|
|
* Perform a preg operation, wrapping up the result.
|
|
*
|
|
* @template V
|
|
*
|
|
* @param callable(string):V $operation
|
|
* @param string $subject
|
|
*
|
|
* @return \Dotenv\Result\Result<V,string>
|
|
*/
|
|
private static function pregAndWrap(callable $operation, $subject)
|
|
{
|
|
$result = $operation($subject);
|
|
|
|
if (($e = preg_last_error()) !== PREG_NO_ERROR) {
|
|
return Error::create(self::lookupError($e));
|
|
}
|
|
|
|
return Success::create($result);
|
|
}
|
|
|
|
/**
|
|
* Lookup the preg error code.
|
|
*
|
|
* @param int $code
|
|
*
|
|
* @return string
|
|
*/
|
|
private static function lookupError($code)
|
|
{
|
|
return Option::fromValue(get_defined_constants(true))
|
|
->filter(function (array $consts) {
|
|
return isset($consts['pcre']) && defined('ARRAY_FILTER_USE_KEY');
|
|
})
|
|
->map(function (array $consts) {
|
|
return array_filter($consts['pcre'], function ($msg) {
|
|
return substr($msg, -6) === '_ERROR';
|
|
}, ARRAY_FILTER_USE_KEY);
|
|
})
|
|
->flatMap(function (array $errors) use ($code) {
|
|
return Option::fromValue(
|
|
array_search($code, $errors, true)
|
|
);
|
|
})
|
|
->getOrElse('PREG_ERROR');
|
|
}
|
|
}
|