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|
<?php
//
// +----------------------------------------------------------------------+
// | PHP version 4.0 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2001 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Authors: Stig Bakken <ssb@fast.no> |
// | |
// +----------------------------------------------------------------------+
//
// $Id$
require_once 'PEAR.php';
/**
* This is a class for storing simple configuration values keeping
* track of which are system-defined (defaulted) and which are
* user-defined. By default, only used-defined settings are stored
* back to the user's configuration file.
*
* Configuration member is a simple associative array. Used keys:
*
* master_server which server to query for mirror lists etc.
* server which server/mirror we're currently using
* username PEAR username
* password PEAR password (stored base64-encoded)
* php_dir Where to install .php files
* ext_dir Directory to install compiled libs in
* doc_dir Directory to install documentation in
*
*/
class PEAR_Config extends PEAR
{
// {{{ properties
var $defaults_file = '';
var $config_file = '';
var $configuration = array();
var $defaulted = array();
// }}}
// {{{ PEAR_Config([file], [defaults_file])
function PEAR_Config($file = '', $defaults_file = '')
{
$this->PEAR();
$this->config_file = $file;
$this->defaults_file = $defaults_file;
if ($file && file_exists($file)) {
$this->readConfigFile($file);
}
if ($defaults_file && file_exists($defaults_file)) {
$this->mergeConfigFile($defaults_file, false, true);
}
}
// }}}
// {{{ readConfigFile([file], [defaults])
function readConfigFile($file = null, $defaults = false)
{
if ($file === null) {
$file = $this->config_file;
}
$fp = @fopen($file, "r");
if (!$fp) {
return $this->raiseError($php_errormsg);
}
$contents = fread($fp, filesize($file));
$data = unserialize($contents);
if ($data === false) {
return $this->raiseError("PEAR_Config::readConfigFile: bad data");
}
$this->configuration = $data;
if ($defaults) {
foreach ($data as $key => $value) {
$this->defaulted[$key] = true;
}
}
}
// }}}
// {{{ mergeConfigFile(file, [override], [defaults])
function mergeConfigFile($file, $override = true, $defaults = false)
{
$fp = @fopen($file, "r");
if (!$fp) {
return $this->raiseError($php_errormsg);
}
$contents = fread($fp, filesize($file));
$data = unserialize($contents);
if ($data === false) {
return $this->raiseError("PEAR_Config::mergeConfigFile: bad data");
}
foreach ($data as $key => $value) {
if (isset($this->configuration[$key]) && !$override) {
continue;
}
if ($defaults) {
$this->defaulted[$key] = true;
}
$this->configuration[$key] = $value;
}
}
// }}}
// {{{ writeConfigFile([file], [what_keys])
function writeConfigFile($file = null, $what_keys = 'userdefined')
{
print "storing $what_keys keys\n";
if ($what_keys == 'both') {
$this->writeConfigFile($file, 'userdefined');
$this->writeConfigFile($file, 'default');
}
if ($file === null) {
if ($what_keys == 'default') {
$file = $this->defaults_file;
} else {
$file = $this->config_file;
}
}
if ($what_keys == 'default') {
$keys_to_store = array_intersect(array_keys($this->configuration),
array_keys($this->defaulted));
} elseif ($what_keys == 'all') {
$keys_to_store = array_keys($this->configuration);
} else { // user-defined keys
$keys_to_store = array_diff(array_keys($this->configuration),
array_keys($this->defaulted));
}
$data = array();
foreach ($keys_to_store as $key) {
$data[$key] = $this->configuration[$key];
}
$fp = @fopen($file, "w");
if (!$fp) {
return $this->raiseError("PEAR_Config::writeConfigFile fopen failed");
}
if (!@fwrite($fp, serialize($data))) {
return $this->raiseError("PEAR_Config::writeConfigFile serialize failed");
}
return true;
}
// }}}
// {{{ get(key)
function get($key)
{
return @$this->configuration[$key];
}
// }}}
// {{{ set(key, value, [default])
function set($key, $value, $default = false)
{
$this->configuration[$key] = $value;
if ($default) {
$this->defaulted[$key] = true;
} elseif (isset($this->defaulted[$key])) {
unset($this->defaulted[$key]);
}
}
// }}}
// {{{ toDefault(key)
function toDefault($key)
{
if (file_exists($this->defaults_file)) {
// re-reads the defaults file each time, but hey it works
unset($this->configuration[$key]);
$this->mergeConfigFile($this->defaults_file, false, true);
}
}
// }}}
// {{{ isDefaulted(key)
function isDefaulted($key)
{
return isset($this->defaulted[$key]);
}
// }}}
// {{{ isDefined(key)
function isDefined($key)
{
return isset($this->configuration[$key]);
}
// }}}
}
?>
|
