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Dir : ~/usr/share/psa-pear/pear/php/Horde/Prefs/

Edit File: Scope.php

<?php
/**
 * Copyright 2010-2017 Horde LLC (http://www.horde.org/)
 *
 * See the enclosed file COPYING for license information (LGPL). If you
 * did not receive this file, see http://www.horde.org/licenses/lgpl21.
 *
 * @author   Michael Slusarz <slusarz@horde.org>
 * @category Horde
 * @license  http://www.horde.org/licenses/lgpl21 LGPL 2.1
 * @package  Prefs
 */

/**
 * This class provides the storage for a preference scope.
 *
 * @author   Michael Slusarz <slusarz@horde.org>
 * @category Horde
 * @license  http://www.horde.org/licenses/lgpl21 LGPL 2.1
 * @package  Prefs
 */
class Horde_Prefs_Scope implements Iterator, Serializable
{
    /**
     * Is the object being initialized?
     *
     * @var boolean
     */
    public $init = false;

/**
     * The scope name.
     *
     * @var string
     */
    public $scope;

/**
     * List of dirty prefs.
     *
     * @var array
     */
    protected $_dirty = array();

/**
     * Preferences list.  Each preference has the following format:
     * <pre>
     * [pref_name] => array(
     *     [d] => (string) Default value
     *            If not present, 'v' is the default value.
     *     [l] => (boolean) Locked
     *            If not present, pref is not locked.
     *     [v] => (string) Current pref value
     * )
     *
     * For internal storage, if 'l' and 'v' are both not available:
     * [pref_name] => (string) Current pref value
     * </pre>
     *
     * @var array
     */
    protected $_prefs = array();

/**
     * Constructor.
     *
     * @param string $scope  The scope for this set of preferences.
     */
    public function __construct($scope)
    {
        $this->scope = $scope;
    }

/**
     * Removes a preference entry.
     *
     * @param string $pref  The name of the preference to remove.
     *
     * @return boolean  True if preference was removed.
     */
    public function remove($pref)
    {
        if (!($p = $this->_fromInternal($pref))) {
            return false;
        }

if (isset($p['d'])) {
            $p['v'] = $p['d'];
            unset($p['d']);
            $this->_toInternal($pref, $p);
            $this->setDirty($pref, false);
        }

return true;
    }

/**
     * Sets the value for a preference.
     *
     * @param string $pref  The preference name.
     * @param string $val   The preference value.
     */
    public function set($pref, $val)
    {
        if ($p = $this->_fromInternal($pref)) {
            if ($val != $p['v']) {
                if (isset($p['d']) && ($val == $p['d'])) {
                    unset($p['d']);
                } else {
                    $p['d'] = $p['v'];
                }
                $p['v'] = $val;
                $this->_toInternal($pref, $p);
            }
        } else {
            $this->_toInternal($pref, array('v' => $val));
        }
    }

/**
     * Does a preference exist in this scope?
     *
     * @return boolean  True if the preference exists.
     */
    public function exists($pref)
    {
        return isset($this->_prefs[$pref]);
    }

/**
     * Returns the value of a preference.
     *
     * @param string $pref  The preference name to retrieve.
     *
     * @return string  The value of the preference, null if it doesn't exist.
     */
    public function get($pref)
    {
        return ($p = $this->_fromInternal($pref))
            ? $p['v']
            : null;
    }

/**
     * Mark a preference as locked.
     *
     * @param string $pref     The preference name.
     * @param boolean $locked  Is the preference locked?
     */
    public function setLocked($pref, $locked)
    {
        if ($p = $this->_fromInternal($pref)) {
            if ($locked) {
                if (!isset($p['l'])) {
                    $p['l'] = true;
                    $this->_toInternal($pref, $p);
                }
            } elseif (isset($p['l'])) {
                unset($p['l']);
                $this->_toInternal($pref, $p);
            }
        }
    }

/**
     * Is a preference locked?
     *
     * @param string $pref  The preference name.
     *
     * @return boolean  Whether the preference is locked.
     */
    public function isLocked($pref)
    {
        return ($p = $this->_fromInternal($pref))
            ? !empty($p['l'])
            : false;
    }

/**
     * Is a preference's value the default?
     *
     * @param string $pref  The preference name.
     *
     * @return boolean  True if the preference contains the default value.
     */
    public function isDefault($pref)
    {
        return ($p = $this->_fromInternal($pref))
            ? !isset($p['d'])
            : true;
    }

/**
     * Returns the default value of a preference.
     *
     * @param string $pref  The preference name.
     *
     * @return string  The preference's default value.
     */
    public function getDefault($pref)
    {
        return ($p = $this->_fromInternal($pref))
            ? (isset($p['d']) ? $p['d'] : $p['v'])
            : null;
    }

/**
     * Get the list of dirty preferences.
     *
     * @return array  The list of dirty preferences.
     */
    public function getDirty()
    {
        return array_keys($this->_dirty);
    }

/**
     * Is a preference marked dirty?
     *
     * @param mixed $pref  The preference name.  If null, will return true if
     *                     scope contains at least one dirty pref.
     *
     * @return boolean  True if the preference is marked dirty.
     */
    public function isDirty($pref = null)
    {
        return is_null($pref)
            ? !empty($this->_dirty)
            : isset($this->_dirty[$pref]);
    }

/**
     * Set the dirty flag for a preference
     *
     * @param string $pref    The preference name.
     * @param boolean $dirty  True to mark the pref as dirty.
     */
    public function setDirty($pref, $dirty)
    {
        if ($dirty) {
            $this->_dirty[$pref] = true;
        } else {
            unset($this->_dirty[$pref]);
        }
    }

/**
     */
    protected function _fromInternal($pref)
    {
        if (!isset($this->_prefs[$pref])) {
            return false;
        }

return is_array($this->_prefs[$pref])
            ? $this->_prefs[$pref]
            : array('v' => $this->_prefs[$pref]);
    }

/**
     */
    protected function _toInternal($pref, array $value)
    {
        if (!isset($value['d']) && !isset($value['l'])) {
            $value = $value['v'];
        }

$this->_prefs[$pref] = $value;

if (!$this->init) {
            $this->setDirty($pref, true);
        }
    }

/* Iterator methods. */

/**
     */
    public function current()
    {
        return $this->_fromInternal($this->key());
    }

/**
     */
    public function key()
    {
        return key($this->_prefs);
    }

/**
     */
    public function next()
    {
        return next($this->_prefs);
    }

/**
     */
    public function rewind()
    {
        return reset($this->_prefs);
    }

/**
     */
    public function valid()
    {
        return !is_null(key($this->_prefs));
    }

/* Serializable methods. */

/**
     */
    public function serialize()
    {
        return json_encode(array(
            $this->scope,
            $this->_prefs
        ));
    }

/**
     */
    public function unserialize($data)
    {
        list($this->scope, $this->_prefs) = json_decode($data, true);
    }

}