Strings: throw exception on malformed UTF-8 in webalize() and to… (#205)

Author: VasekPurchart

src/Utils/Strings.php

@@ -142,7 +142,7 @@ public static function toAscii(string $s): string
 			$transliterator = \Transliterator::create('Any-Latin; Latin-ASCII');
 		}
 
-		$s = preg_replace('#[^\x09\x0A\x0D\x20-\x7E\xA0-\x{2FF}\x{370}-\x{10FFFF}]#u', '', $s);
+		$s = self::pcre('preg_replace', ['#[^\x09\x0A\x0D\x20-\x7E\xA0-\x{2FF}\x{370}-\x{10FFFF}]#u', '', $s]);
 		$s = strtr($s, '`\'"^~?', "\x01\x02\x03\x04\x05\x06");
 		$s = str_replace(
 			["\u{201E}", "\u{201C}", "\u{201D}", "\u{201A}", "\u{2018}", "\u{2019}", "\u{B0}"],

tests/Utils/Strings.toAscii().phpt

@@ -21,6 +21,9 @@ Assert::same('', Strings::toAscii("\u{10000}")); // U+10000
 Assert::same('', Strings::toAscii("\u{A4}")); // non-ASCII char
 Assert::same('a b', Strings::toAscii("a\u{A0}b")); // non-breaking space
 Assert::same('Tarikh', Strings::toAscii("Ta\u{2BE}rikh")); // Taʾrikh
+Assert::exception(function () {
+	Strings::toAscii("0123456789\xFF");
+}, Nette\Utils\RegexpException::class, null, PREG_BAD_UTF8_ERROR);
 
 if (class_exists('Transliterator') && \Transliterator::create('Any-Latin; Latin-ASCII')) {
 	Assert::same('Athena->Moskva', Strings::toAscii("\u{391}\u{3B8}\u{3AE}\u{3BD}\u{3B1}\u{2192}\u{41C}\u{43E}\u{441}\u{43A}\u{432}\u{430}")); // Αθήνα→Москва

tests/Utils/Strings.webalize().phpt

@@ -17,3 +17,6 @@ Assert::same('zlutoucky-kun-oooo', Strings::webalize("&\u{17D}LU\u{164}OU\u{10C}
 Assert::same('ZLUTOUCKY-KUN-oooo', Strings::webalize("&\u{17D}LU\u{164}OU\u{10C}K\u{DD} K\u{16E}\u{147} \u{F6}\u{151}\u{F4}o!", null, false)); // &ŽLUŤOUČKÝ KŮŇ öőôo!
 Assert::same('1-4-!', Strings::webalize("\u{BC} !", '!'));
 Assert::same('a-b', Strings::webalize("a\u{A0}b")); // non-breaking space
+Assert::exception(function () {
+	Strings::toAscii("0123456789\xFF");
+}, Nette\Utils\RegexpException::class, null, PREG_BAD_UTF8_ERROR);