Uri.php

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<?php

namespace Sabre\VObject\Property;

use Sabre\VObject\Parameter;
use Sabre\VObject\Property;

class Uri extends Text {

    public $delimiter = null;

    function getValueType() {

        return 'URI';

    }

    function parameters() {

        $parameters = parent::parameters();
        if (!isset($parameters['VALUE']) && in_array($this->name, ['URL', 'PHOTO'])) {
            // If we are encoding a URI value, and this URI value has no
            // VALUE=URI parameter, we add it anyway.
            //
            // This is not required by any spec, but both Apple iCal and Apple
            // AddressBook (at least in version 10.8) will trip over this if
            // this is not set, and so it improves compatibility.
            //
            // See Issue #227 and #235
            $parameters['VALUE'] = new Parameter($this->root, 'VALUE', 'URI');
        }
        return $parameters;

    }

    function setRawMimeDirValue($val) {

        // Normally we don't need to do any type of unescaping for these
        // properties, however.. we've noticed that Google Contacts
        // specifically escapes the colon (:) with a blackslash. While I have
        // no clue why they thought that was a good idea, I'm unescaping it
        // anyway.
        //
        // Good thing backslashes are not allowed in urls. Makes it easy to
        // assume that a backslash is always intended as an escape character.
        if ($this->name === 'URL') {
            $regex = '#  (?: (\\\\ (?: \\\\ | : ) ) ) #x';
            $matches = preg_split($regex, $val, -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
            $newVal = '';
            foreach ($matches as $match) {
                switch ($match) {
                    case '\:' :
                        $newVal .= ':';
                        break;
                    default :
                        $newVal .= $match;
                        break;
                }
            }
            $this->value = $newVal;
        } else {
            $this->value = strtr($val, ['\,' => ',']);
        }

    }

    function getRawMimeDirValue() {

        if (is_array($this->value)) {
            $value = $this->value[0];
        } else {
            $value = $this->value;
        }

        return strtr($value, [',' => '\,']);

    }

}