Initial Commit

database/php/pear/PEAR/Installer/Role/Cfg.php

@@ -0,0 +1,105 @@
+<?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
+ * @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: 1.10.1
+ * @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;
+    }
+}