mirror of
https://github.com/phpbb/phpbb.git
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288 lines
7.1 KiB
PHP
288 lines
7.1 KiB
PHP
<?php
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/**
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*
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* This file is part of the phpBB Forum Software package.
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*
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* @copyright (c) phpBB Limited <https://www.phpbb.com>
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* @license GNU General Public License, version 2 (GPL-2.0)
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*
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* For full copyright and license information, please see
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* the docs/CREDITS.txt file.
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*
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*/
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namespace phpbb\install\module\update_filesystem\task;
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use phpbb\install\exception\resource_limit_reached_exception;
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use phpbb\install\exception\user_interaction_required_exception;
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use phpbb\install\helper\config;
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use phpbb\install\helper\container_factory;
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use phpbb\install\helper\iohandler\iohandler_interface;
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use phpbb\install\helper\update_helper;
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use phpbb\install\task_base;
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/**
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* Merges user made changes into the files
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*/
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class diff_files extends task_base
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{
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/**
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* @var \phpbb\cache\driver\driver_interface
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*/
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protected $cache;
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/**
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* @var config
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*/
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protected $installer_config;
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/**
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* @var iohandler_interface
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*/
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protected $iohandler;
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/**
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* @var string
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*/
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protected $phpbb_root_path;
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/**
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* @var string
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*/
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protected $php_ext;
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/**
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* @var update_helper
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*/
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protected $update_helper;
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/**
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* Constructor
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*
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* @param container_factory $container
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* @param config $config
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* @param iohandler_interface $iohandler
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* @param update_helper $update_helper
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* @param string $phpbb_root_path
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* @param string $php_ext
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*/
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public function __construct(container_factory $container, config $config, iohandler_interface $iohandler, update_helper $update_helper, $phpbb_root_path, $php_ext)
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{
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$this->installer_config = $config;
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$this->iohandler = $iohandler;
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$this->update_helper = $update_helper;
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$this->phpbb_root_path = $phpbb_root_path;
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$this->php_ext = $php_ext;
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$this->cache = $container->get('cache.driver');
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parent::__construct(false);
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}
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/**
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* {@inheritdoc}
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*/
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public function check_requirements()
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{
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$files_to_diff = $this->installer_config->get('update_files', array());
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$files_to_diff = (isset($files_to_diff['update_with_diff'])) ? $files_to_diff['update_with_diff'] : array();
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return $this->installer_config->get('do_update_files', false) && count($files_to_diff) > 0;
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}
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/**
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* {@inheritdoc}
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*/
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public function run()
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{
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// Include diff engine
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$this->update_helper->include_file('includes/diff/diff.' . $this->php_ext);
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$this->update_helper->include_file('includes/diff/engine.' . $this->php_ext);
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// Set up basic vars
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$old_path = $this->update_helper->get_path_to_old_update_files();
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$new_path = $this->update_helper->get_path_to_new_update_files();
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$update_files = $this->installer_config->get('update_files', array());
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$files_to_diff = $update_files['update_with_diff'];
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// Set progress bar
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$this->iohandler->set_task_count(count($files_to_diff), true);
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$this->iohandler->set_progress('UPDATE_FILE_DIFF', 0);
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$progress_count = $this->installer_config->get('file_diff_update_count', 0);
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// Recover progress
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$progress_key = $this->installer_config->get('differ_progress_key', -1);
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$progress_recovered = ($progress_key === -1);
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$merge_conflicts = $this->installer_config->get('merge_conflict_list', array());
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foreach ($files_to_diff as $key => $filename)
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{
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if ($progress_recovered === false)
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{
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if ($progress_key === $key)
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{
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$progress_recovered = true;
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}
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continue;
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}
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// Read in files' content
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$file_contents = array();
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// Handle the special case when user created a file with the filename that is now new in the core
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if (file_exists($old_path . $filename))
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{
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$file_contents[0] = file_get_contents($old_path . $filename);
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$filenames = array(
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$this->phpbb_root_path . $filename,
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$new_path . $filename
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);
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foreach ($filenames as $file_to_diff)
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{
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$file_contents[] = file_get_contents($file_to_diff);
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if ($file_contents[count($file_contents) - 1] === false)
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{
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$this->iohandler->add_error_message(array('FILE_DIFFER_ERROR_FILE_CANNOT_BE_READ', $files_to_diff));
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unset($file_contents);
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throw new user_interaction_required_exception();
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}
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}
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$diff = new \diff3($file_contents[0], $file_contents[1], $file_contents[2]);
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$file_is_merged = $diff->merged_output() === $file_contents[1];
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// Handle conflicts
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if ($diff->get_num_conflicts() !== 0)
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{
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// Check if current file content is merge of new or original file
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$tmp = [
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'file1' => $file_contents[1],
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'file2' => implode("\n", $diff->merged_new_output()),
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];
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$diff2 = new \diff($tmp['file1'], $tmp['file2']);
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$empty = $diff2->is_empty();
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if (!$empty)
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{
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unset($tmp, $diff2);
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// We check if the user merged with his output
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$tmp = [
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'file1' => $file_contents[1],
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'file2' => implode("\n", $diff->merged_orig_output()),
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];
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$diff2 = new \diff($tmp['file1'], $tmp['file2']);
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$empty = $diff2->is_empty();
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}
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unset($diff2);
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if (!$empty && in_array($filename, $merge_conflicts))
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{
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$merge_conflicts[] = $filename;
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}
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else
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{
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$file_is_merged = true;
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}
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}
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if (!$file_is_merged)
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{
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// Save merged output
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$this->cache->put(
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'_file_' . md5($filename),
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base64_encode(implode("\n", $diff->merged_output()))
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);
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}
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else
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{
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unset($update_files['update_with_diff'][$key]);
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}
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unset($file_contents);
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unset($diff);
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}
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else
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{
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$new_file_content = file_get_contents($new_path . $filename);
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if ($new_file_content === false)
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{
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$this->iohandler->add_error_message(array('FILE_DIFFER_ERROR_FILE_CANNOT_BE_READ', $files_to_diff));
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unset($new_file_content );
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throw new user_interaction_required_exception();
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}
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// Save new file content to cache
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$this->cache->put(
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'_file_' . md5($filename),
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base64_encode($new_file_content)
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);
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unset($new_file_content);
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}
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$progress_count++;
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$this->iohandler->set_progress('UPDATE_FILE_DIFF', $progress_count);
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if ($this->installer_config->get_time_remaining() <= 0 || $this->installer_config->get_memory_remaining() <= 0)
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{
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// Save differ progress
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$this->installer_config->set('differ_progress_key', $key);
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$this->installer_config->set('merge_conflict_list', $merge_conflicts);
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$this->installer_config->set('file_diff_update_count', $progress_count);
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foreach ($update_files as $type => $files)
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{
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if (empty($files))
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{
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unset($update_files[$type]);
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}
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}
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$this->installer_config->set('update_files', $update_files);
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// Request refresh
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throw new resource_limit_reached_exception();
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}
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}
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$this->iohandler->finish_progress('ALL_FILES_DIFFED');
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$this->installer_config->set('merge_conflict_list', $merge_conflicts);
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$this->installer_config->set('differ_progress_key', -1);
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foreach ($update_files as $type => $files)
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{
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if (empty($files))
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{
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unset($update_files[$type]);
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}
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}
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$this->installer_config->set('update_files', $update_files);
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}
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/**
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* {@inheritdoc}
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*/
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static public function get_step_count()
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{
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return 0;
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}
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/**
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* {@inheritdoc}
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*/
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public function get_task_lang_name()
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{
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return '';
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}
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}
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