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https://github.com/renbaoshuo/S2OJ.git
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96d4a3ecf7
Due to historical reasons, the code is in subfolder "1". With SVN removal, we place the code back and remove the annoying "1" folder.
74 lines
2.2 KiB
PHP
74 lines
2.2 KiB
PHP
<?php
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// Enum = Enumerated
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/**
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* Validates a keyword against a list of valid values.
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* @warning The case-insensitive compare of this function uses PHP's
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* built-in strtolower and ctype_lower functions, which may
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* cause problems with international comparisons
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*/
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class HTMLPurifier_AttrDef_Enum extends HTMLPurifier_AttrDef
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{
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/**
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* Lookup table of valid values.
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* @type array
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* @todo Make protected
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*/
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public $valid_values = array();
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/**
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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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*/
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protected $case_sensitive = false; // values according to W3C spec
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/**
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* @param array $valid_values List of valid values
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* @param bool $case_sensitive Whether or not case sensitive
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*/
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public function __construct($valid_values = array(), $case_sensitive = false)
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{
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$this->valid_values = array_flip($valid_values);
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$this->case_sensitive = $case_sensitive;
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}
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/**
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* @param string $string
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* @param HTMLPurifier_Config $config
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* @param HTMLPurifier_Context $context
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* @return bool|string
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*/
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public function validate($string, $config, $context)
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{
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$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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}
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$result = isset($this->valid_values[$string]);
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return $result ? $string : false;
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}
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/**
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* @param string $string In form of comma-delimited list of case-insensitive
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* valid values. Example: "foo,bar,baz". Prepend "s:" to make
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* case sensitive
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* @return HTMLPurifier_AttrDef_Enum
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*/
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public function make($string)
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{
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if (strlen($string) > 2 && $string[0] == 's' && $string[1] == ':') {
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$string = substr($string, 2);
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$sensitive = true;
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} else {
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$sensitive = false;
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}
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$values = explode(',', $string);
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return new HTMLPurifier_AttrDef_Enum($values, $sensitive);
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}
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}
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// vim: et sw=4 sts=4
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