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<?php
require_once 'Horde/Util.php';
require_once 'Horde/Array.php';
/**
* Variables:: class.
*
* $Horde: framework/Util/Variables.php,v 1.8.10.6 2006/03/28 12:31:12 jan Exp $
*
* @author Robert E. Coyle <robertecoyle@hotmail.com>
* @author Chuck Hagenbuch <chuck@horde.org>
* @package Horde_Util
*/
class Variables {
var $_vars;
var $_expectedVariables = array();
function Variables($vars = array())
{
if (is_null($vars)) {
$vars = Util::dispelMagicQuotes($_REQUEST);
}
if (isset($vars['_formvars'])) {
$this->_expectedVariables = @unserialize($vars['_formvars']);
unset($vars['_formvars']);
}
$this->_vars = $vars;
}
function &getDefaultVariables()
{
$vars = &new Variables(Util::dispelMagicQuotes($_REQUEST));
return $vars;
}
function exists($varname)
{
if (count($this->_expectedVariables) &&
$this->_exists($this->_expectedVariables, $varname, false)) {
return true;
}
return $this->_exists($this->_vars, $varname, false);
}
function get($varname)
{
$this->_getExists($this->_vars, $varname, $value);
return $value;
}
function getExists($varname, &$exists)
{
$exists = $this->_getExists($this->_vars, $varname, $value);
return $value;
}
function set($varname, $value)
{
$keys = array();
if (!Horde_Array::getArrayParts($varname, $base, $keys)) {
$this->_vars[$varname] = $value;
} else {
array_unshift($keys, $base);
$place = &$this->_vars;
while (count($keys)) {
$key = array_shift($keys);
if (!isset($place[$key])) {
$place[$key] = array();
}
$place = &$place[$key];
}
$place = $value;
}
}
function merge($vars)
{
foreach ($vars as $varname => $value) {
$this->set($varname, $value);
}
}
function add($varname, $value)
{
if ($this->exists($varname)) {
return false;
}
$this->_vars[$varname] = $value;
}
function remove($varname)
{
Horde_Array::getArrayParts($varname, $base, $keys);
if (!is_null($base)) {
$ptr = &$this->_vars[$base];
$end = count($keys) - 1;
foreach ($keys as $key => $val) {
if (!isset($ptr[$val])) {
break;
}
if ($end == $key) {
array_splice($ptr, array_search($val, array_keys($ptr)), 1);
} else {
$ptr = &$ptr[$val];
}
}
} else {
unset($this->_vars[$varname]);
}
}
/**
* Find out whether or not $varname was set in $array.
*
* @access private
*
* @param array $array The array to search in (usually
* either $this->_vars or
* $this->_expectedVariables).
* @param string $varname The name of the variable to look
* for.
* @param boolean $checkExpectedVariables If we don't find $varname,
* should we check
* $this->_expectedVariables to see
* if should have existed (like a
* checkbox or select multiple).
*
* @return Whether or not the variable was set (or, if we've checked
* $this->_expectedVariables, should have been set).
*/
function _exists($array, $varname, $checkExpectedVariables = true)
{
return $this->_getExists($array, $varname, $value, $checkExpectedVariables);
}
/**
* Fetch the requested variable ($varname) into $value, and return
* whether or not the variable was set in $array.
*
* @access private
*
* @param array $array The array to search in (usually
* either $this->_vars or
* $this->_expectedVariables).
* @param string $varname The name of the variable to look
* for.
* @param mixed &$value $varname's value gets assigned
* to.
* this variable.
* @param boolean $checkExpectedVariables If we don't find $varname,
* should we check
* $this->_expectedVariables to see
* if it should have existed (like
* a checkbox or select multiple).
*
* @return Whether or not the variable was set (or, if we've checked
* $this->_expectedVariables, should have been set).
*/
function _getExists($array, $varname, &$value, $checkExpectedVariables = true)
{
if (Horde_Array::getArrayParts($varname, $base, $keys)) {
if (!isset($array[$base])) {
$value = null;
// If we're supposed to check $this->_expectedVariables, do so,
// but make sure not to check it again.
return $checkExpectedVariables ? $this->_exists($this->_expectedVariables, $varname, false) : false;
} else {
$searchspace = &$array[$base];
while (count($keys)) {
$key = array_shift($keys);
if (!isset($searchspace[$key])) {
$value = null;
// If we're supposed to check
// $this->_expectedVariables, do so, but make
// sure not to check it again.
return $checkExpectedVariables ? $this->_exists($this->_expectedVariables, $varname, false) : false;
}
$searchspace = &$searchspace[$key];
}
$value = $searchspace;
return true;
}
} else {
$value = isset($array[$varname]) ? $array[$varname] : null;
if (!is_null($value)) {
return true;
} elseif ($checkExpectedVariables) {
// If we're supposed to check
// $this->_expectedVariables, do so, but make sure not
// to check it again.
return $this->_exists($this->_expectedVariables, $varname, false);
} else {
return false;
}
}
}
}
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