Feature #20521 ยป 0011210.patch
| t3lib/class.t3lib_div.php (Arbeitskopie) | ||
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}
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/**
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* Determines whether a string seems to be a valid regular expression.
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*
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* @param string $string: The string to be validated
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* @param boolean $allowModifiers: Whether to allow modifiers (default: true)
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* @return boolean Whether the string seems to be a valid regular expression
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*/
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public static function isValidRegularExpression($string, $allowModifiers = true) {
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$result = false;
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$pattern = '/^([^[:alnum:]\\\])(.+)\1' . ($allowModifiers ? '[imsxeADSUXJu]*$/' : '$/');
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if (preg_match($pattern, $string, $matches)) {
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// Checks whether there are unescaped delimiters in the body of the regular expression:
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$delimiter = preg_quote($matches[1], '#');
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$result = (preg_match('#(?<!\\\)' . $delimiter . '#', $matches[2]) ? false : true);
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}
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return $result;
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}
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/**
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* Formats a string for output between <textarea>-tags
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* All content outputted in a textarea form should be passed through this function
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* Not only is the content htmlspecialchar'ed on output but there is also a single newline added in the top. The newline is necessary because browsers will ignore the first newline after <textarea> if that is the first character. Therefore better set it!
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| tests/t3lib/t3lib_div_testcase.php (Arbeitskopie) | ||
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$this->assertEquals('blogExample', t3lib_div::lcfirst('BlogExample'));
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$this->assertEquals('blogexample', t3lib_div::lcfirst('blogexample'));
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}
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/**
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* @test
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* @see t3lib_div::isValidRegularExpression
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*/
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public function isValidRegularExpressionWithSlashes() {
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$this->assertTrue(
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t3lib_div::isValidRegularExpression('/(a|b|c)/i')
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);
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}
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/**
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* @test
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* @see t3lib_div::isValidRegularExpression
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*/
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public function isValidRegularExpressionWithHashes() {
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$this->assertTrue(
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t3lib_div::isValidRegularExpression('#(a|b|c)#i')
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);
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}
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/**
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* @test
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* @see t3lib_div::isValidRegularExpression
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*/
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public function isValidRegularExpressionUsingDifferentDelimiters() {
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$this->assertFalse(
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t3lib_div::isValidRegularExpression('#(a|b|c)/i')
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);
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}
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/**
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* @test
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* @see t3lib_div::isValidRegularExpression
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*/
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public function isValidRegularExpressionUsingWrongDelimiters() {
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$this->assertFalse(
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t3lib_div::isValidRegularExpression('A(a|b|c)Ai')
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);
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}
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/**
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* @test
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* @see t3lib_div::isValidRegularExpression
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*/
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public function isValidRegularExpressionWithUnescapedDelimiter() {
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$this->assertFalse(
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t3lib_div::isValidRegularExpression('/(a/b/c)/i')
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);
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}
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/**
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* @test
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* @see t3lib_div::isValidRegularExpression
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*/
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public function isValidRegularExpressionWithEscapedDelimiter() {
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$this->assertTrue(
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t3lib_div::isValidRegularExpression('/(a\/b\/c)/i')
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);
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}
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}
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?>
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