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sources/3rdparty/PEAR/Installer/Role/Cfg.php
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<?php
/**
* PEAR_Installer_Role_Cfg
*
* PHP versions 4 and 5
*
* @category pear
* @package PEAR
* @author Greg Beaver <cellog@php.net>
* @copyright 2007-2009 The Authors
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version CVS: $Id: Cfg.php 313023 2011-07-06 19:17:11Z dufuz $
* @link http://pear.php.net/package/PEAR
* @since File available since Release 1.7.0
*/
/**
* @category pear
* @package PEAR
* @author Greg Beaver <cellog@php.net>
* @copyright 2007-2009 The Authors
* @license http://opensource.org/licenses/bsd-license.php New BSD License
* @version Release: 1.9.4
* @link http://pear.php.net/package/PEAR
* @since Class available since Release 1.7.0
*/
class PEAR_Installer_Role_Cfg extends PEAR_Installer_Role_Common
{
/**
* @var PEAR_Installer
*/
var $installer;
/**
* the md5 of the original file
*
* @var unknown_type
*/
var $md5 = null;
/**
* Do any unusual setup here
* @param PEAR_Installer
* @param PEAR_PackageFile_v2
* @param array file attributes
* @param string file name
*/
function setup(&$installer, $pkg, $atts, $file)
{
$this->installer = &$installer;
$reg = &$this->installer->config->getRegistry();
$package = $reg->getPackage($pkg->getPackage(), $pkg->getChannel());
if ($package) {
$filelist = $package->getFilelist();
if (isset($filelist[$file]) && isset($filelist[$file]['md5sum'])) {
$this->md5 = $filelist[$file]['md5sum'];
}
}
}
function processInstallation($pkg, $atts, $file, $tmp_path, $layer = null)
{
$test = parent::processInstallation($pkg, $atts, $file, $tmp_path, $layer);
if (@file_exists($test[2]) && @file_exists($test[3])) {
$md5 = md5_file($test[2]);
// configuration has already been installed, check for mods
if ($md5 !== $this->md5 && $md5 !== md5_file($test[3])) {
// configuration has been modified, so save our version as
// configfile-version
$old = $test[2];
$test[2] .= '.new-' . $pkg->getVersion();
// backup original and re-install it
PEAR::pushErrorHandling(PEAR_ERROR_RETURN);
$tmpcfg = $this->config->get('temp_dir');
$newloc = System::mkdir(array('-p', $tmpcfg));
if (!$newloc) {
// try temp_dir
$newloc = System::mktemp(array('-d'));
if (!$newloc || PEAR::isError($newloc)) {
PEAR::popErrorHandling();
return PEAR::raiseError('Could not save existing configuration file '.
$old . ', unable to install. Please set temp_dir ' .
'configuration variable to a writeable location and try again');
}
} else {
$newloc = $tmpcfg;
}
$temp_file = $newloc . DIRECTORY_SEPARATOR . uniqid('savefile');
if (!@copy($old, $temp_file)) {
PEAR::popErrorHandling();
return PEAR::raiseError('Could not save existing configuration file '.
$old . ', unable to install. Please set temp_dir ' .
'configuration variable to a writeable location and try again');
}
PEAR::popErrorHandling();
$this->installer->log(0, "WARNING: configuration file $old is being installed as $test[2], you should manually merge in changes to the existing configuration file");
$this->installer->addFileOperation('rename', array($temp_file, $old, false));
$this->installer->addFileOperation('delete', array($temp_file));
}
}
return $test;
}
}
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