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postfixadmin/model/Config.php

228 lines
6.7 KiB
PHP

<?php
# $Id$
# This class is too static - if you inherit a class from it, it will share the static $instance and all its contents
# Therefore the class is marked as final to prevent someone accidently does this ;-)
final class Config {
private static $instance = null;
# do not error_log() 'undefined config option' for deprecated options
private static $deprecated_options = array(
'min_password_length',
);
/**
* Return a singleton instance of Configure.
*
* @return Configure instance
* @access public
*/
public static function getInstance() {
if(self::$instance == null) {
self::$instance = new self();
}
return self::$instance;
}
/**
* Used to write a dynamic var in the Configure instance.
*
* Usage
* Configure::write('One.key1', 'value of the Configure::One[key1]');
* Configure::write(array('One.key1' => 'value of the Configure::One[key1]'));
* Configure::write('One', array('key1'=>'value of the Configure::One[key1]', 'key2'=>'value of the Configure::One[key2]');
* Configure::write(array('One.key1' => 'value of the Configure::One[key1]', 'One.key2' => 'value of the Configure::One[key2]'));
*
* @param array $config Name of var to write
* @param mixed $value Value to set for var
* @return void
* @access public
*/
public static function write($config, $value = null) {
$_this = self::getInstance();
if (!is_array($config)) {
$config = array($config => $value);
}
foreach ($config as $names => $value) {
$name = $_this->__configVarNames($names);
switch (count($name)) {
case 3:
$_this->{$name[0]}[$name[1]][$name[2]] = $value;
break;
case 2:
$_this->{$name[0]}[$name[1]] = $value;
break;
case 1:
$_this->{$name[0]} = $value;
break;
}
}
}
/**
* Used to read Configure::$var
*
* Usage
* Configure::read('Name'); will return all values for Name
* Configure::read('Name.key'); will return only the value of Configure::Name[key]
*
* @param string $var Variable to obtain
* @return string value of Configure::$var
* @access public
*/
public static function read($var) {
$_this = self::getInstance();
if ($var === 'all') {
$return = array();
foreach ($_this AS $key =>$var) {
$return[$key] = $var;
}
return $return;
}
$name = $_this->__configVarNames($var);
switch (count($name)) {
case 3:
if (isset($_this->{$name[0]}[$name[1]][$name[2]])) {
return $_this->{$name[0]}[$name[1]][$name[2]];
}
break;
case 2:
if (isset($_this->{$name[0]}[$name[1]])) {
return $_this->{$name[0]}[$name[1]];
}
break;
case 1:
if (isset($_this->{$name[0]})) {
return $_this->{$name[0]};
}
break;
}
if ( !in_array(join('.', $name), self::$deprecated_options) ) {
error_log('Config::read(): attempt to read undefined config option "' . join('.', $name) . '", returning null');
}
return null;
}
/**
* read Config::$var and apply sprintf on it
* also checks if $var is changed by sprintf - if not, it writes a warning to error_log
*
* @param string $var Variable to obtain
* @param string $value Value to use as sprintf parameter
* @return string value of Config::$var, parsed by sprintf
* @access public
*/
public static function read_f($var, $value) {
$text = self::read($var);
$newtext = sprintf($text, $value);
# check if sprintf changed something - if not, there are chances that $text didn't contain a %s
if ($text == $newtext) {
if (is_array($var)) $var = join('.', $var);
error_log("$var used via read_f, but nothing replaced (value $value)");
}
return $newtext;
}
/**
* Used to read Config::$var, converted to boolean
* (obviously only useful for settings that can be YES or NO)
*
* Usage
* Configure::read('Name'); will return the value for Name, converted to boolean
*
* @param string $var Variable to obtain
* @return bool value of Configure::$var (TRUE (on YES/yes) or FALSE (on NO/no/not set/unknown value)
* @access public
*/
public static function bool($var) {
$value = self::read($var);
if (strtoupper($value) == 'YES') { # YES
return true;
} elseif (strtoupper($value) == 'NO') { # NO
return false;
} else { # unknown value
# show and log error message on unknown value
$msg = "\$CONF['$var'] has an invalid value, should be 'YES' or 'NO'";
flash_error($msg);
error_log("$msg (value: $value)");
return false;
}
}
/**
* Used to read Config::$var, converted to bool, returned as integer (0 or 1)
* @see bool()
*/
public static function intbool($var) {
return Config::bool($var) ? 1 : 0;
}
/**
* Get translated text from $PALANG
* (wrapper for self::read(), see also the comments there)
*
* @param string $var Variable to obtain
* @return string value of $PALANG[$var]
* @access public
*/
public static function lang($var) {
return self::read(array('__LANG', $var));
}
/**
* Get translated text from $PALANG and apply sprintf on it
* (wrapper for self::read_f(), see also the comments there)
*
* @param string $var Text (from $PALANG) to obtain
* @param string $value Value to use as sprintf parameter
* @return string value of $PALANG[$var], parsed by sprintf
* @access public
*/
public static function lang_f($var, $value) {
return self::read_f(array('__LANG', $var), $value);
}
function getAll() {
$output = $this->config;
return $output;
}
/**
* Checks $name for dot notation to create dynamic Configure::$var as an array when needed.
*
* @param mixed $name Name to split
* @return array Name separated in items through dot notation
* @access private
*/
private function __configVarNames($name) {
if (is_string($name)) {
if (strpos($name, ".")) {
return explode(".", $name);
}
return array($name);
}
return $name;
}
}
/* vim: set expandtab softtabstop=4 tabstop=4 shiftwidth=4: */