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class HTMLPurifier_AttrDef_Enum extends HTMLPurifier_AttrDef
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* Lookup table of valid values.
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* @todo Make protected
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var $valid_values = array();
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public $valid_values = array();
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* Bool indicating whether or not enumeration is case sensitive.
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* @note In general this is always case insensitive.
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var $case_sensitive = false; // values according to W3C spec
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protected $case_sensitive = false; // values according to W3C spec
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* @param $valid_values List of valid values
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* @param $case_sensitive Bool indicating whether or not case sensitive
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function HTMLPurifier_AttrDef_Enum(
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public function __construct(
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$valid_values = array(), $case_sensitive = false
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$this->valid_values = array_flip($valid_values);
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$this->case_sensitive = $case_sensitive;
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function validate($string, $config, &$context) {
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public function validate($string, $config, $context) {
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$string = trim($string);
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if (!$this->case_sensitive) {
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// we may want to do full case-insensitive libraries
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$string = ctype_lower($string) ? $string : strtolower($string);
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$result = isset($this->valid_values[$string]);
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return $result ? $string : false;
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* @param $string In form of comma-delimited list of case-insensitive
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* valid values. Example: "foo,bar,baz". Prepend "s:" to make
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function make($string) {
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public function make($string) {
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if (strlen($string) > 2 && $string[0] == 's' && $string[1] == ':') {
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$string = substr($string, 2);