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- <?php
- namespace Symfony\Component\Translation\Extractor;
- class PhpStringTokenParser
- {
- protected static $replacements = [
- '\\' => '\\',
- '$' => '$',
- 'n' => "\n",
- 'r' => "\r",
- 't' => "\t",
- 'f' => "\f",
- 'v' => "\v",
- 'e' => "\x1B",
- ];
-
- public static function parse(string $str)
- {
- $bLength = 0;
- if ('b' === $str[0]) {
- $bLength = 1;
- }
- if ('\'' === $str[$bLength]) {
- return str_replace(
- ['\\\\', '\\\''],
- ['\\', '\''],
- substr($str, $bLength + 1, -1)
- );
- } else {
- return self::parseEscapeSequences(substr($str, $bLength + 1, -1), '"');
- }
- }
-
- public static function parseEscapeSequences(string $str, string $quote = null)
- {
- if (null !== $quote) {
- $str = str_replace('\\'.$quote, $quote, $str);
- }
- return preg_replace_callback(
- '~\\\\([\\\\$nrtfve]|[xX][0-9a-fA-F]{1,2}|[0-7]{1,3})~',
- [__CLASS__, 'parseCallback'],
- $str
- );
- }
- private static function parseCallback(array $matches): string
- {
- $str = $matches[1];
- if (isset(self::$replacements[$str])) {
- return self::$replacements[$str];
- } elseif ('x' === $str[0] || 'X' === $str[0]) {
- return \chr(hexdec($str));
- } else {
- return \chr(octdec($str));
- }
- }
-
- public static function parseDocString(string $startToken, string $str)
- {
-
- $str = preg_replace('~(\r\n|\n|\r)$~', '', $str);
-
- if (str_contains($startToken, '\'')) {
- return $str;
- }
- return self::parseEscapeSequences($str, null);
- }
- }
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