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<?php
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/**
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 * Records errors for particular segments of an HTML document such as tokens,
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 * attributes or CSS properties. They can contain error structs (which apply
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 * to components of what they represent), but their main purpose is to hold
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 * errors applying to whatever struct is being used.
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 */
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class HTMLPurifier_ErrorStruct
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{
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    /**
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     * Possible values for $children first-key. Note that top-level structures
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     * are automatically token-level.
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     */
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    const TOKEN     = 0;
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    const ATTR      = 1;
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    const CSSPROP   = 2;
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    /**
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     * Type of this struct.
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     * @type string
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     */
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    public $type;
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    /**
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     * Value of the struct we are recording errors for. There are various
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     * values for this:
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     *  - TOKEN: Instance of HTMLPurifier_Token
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     *  - ATTR: array('attr-name', 'value')
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     *  - CSSPROP: array('prop-name', 'value')
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     * @type mixed
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     */
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    public $value;
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    /**
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     * Errors registered for this structure.
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     * @type array
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     */
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    public $errors = array();
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    /**
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     * Child ErrorStructs that are from this structure. For example, a TOKEN
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     * ErrorStruct would contain ATTR ErrorStructs. This is a multi-dimensional
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     * array in structure: [TYPE]['identifier']
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     * @type array
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     */
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    public $children = array();
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    /**
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     * @param string $type
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     * @param string $id
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     * @return mixed
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     */
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    public function getChild($type, $id)
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    {
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        if (!isset($this->children[$type][$id])) {
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            $this->children[$type][$id] = new HTMLPurifier_ErrorStruct();
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            $this->children[$type][$id]->type = $type;
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        }
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        return $this->children[$type][$id];
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    }
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    /**
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     * @param int $severity
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     * @param string $message
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     */
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    public function addError($severity, $message)
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    {
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        $this->errors[] = array($severity, $message);
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    }
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}
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