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<?php
// must be run within Dokuwiki
if(!defined('DOKU_INC')) die();
if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
require_once(DOKU_PLUGIN.'action.php');
class action_plugin_importoldchangelog extends DokuWiki_Action_Plugin {
function getInfo(){
return array(
'author' => 'Ben Coburn',
'email' => 'btcoburn@silicodon.net',
'date' => '2006-10-29',
'name' => 'Import Old Changelog',
'desc' => 'Imports and converts the single file changelog '.
'from the 2006-03-09 release to the new format. '.
'Also reconstructs missing changelog data from '.
'old revisions kept in the attic.',
'url' => 'http://wiki.splitbrain.org/wiki:changelog'
);
}
function register(&$controller) {
$controller->register_hook('TEMPORARY_CHANGELOG_UPGRADE_EVENT', 'BEFORE', $this, 'run_import');
}
function importOldLog($line, &$logs) {
global $lang;
/*
// Note: old log line format
//$info['date'] = $tmp[0];
//$info['ip'] = $tmp[1];
//$info['id'] = $tmp[2];
//$info['user'] = $tmp[3];
//$info['sum'] = $tmp[4];
*/
$oldline = @explode("\t", $line);
if ($oldline!==false && count($oldline)>1) {
// trim summary
$tmp = substr($oldline[4], 0, 1);
$wasMinor = ($tmp==='*');
if ($tmp==='*' || $tmp===' ') {
$sum = rtrim(substr($oldline[4], 1), "\n");
} else {
// no is_minor prefix in summary
$sum = rtrim($oldline[4], "\n");
}
// guess line type
$type = 'E';
if ($wasMinor) { $type = 'e'; }
if ($sum===$lang['created']) { $type = 'C'; }
if ($sum===$lang['deleted']) { $type = 'D'; }
// build new log line
$tmp = array();
$tmp['date'] = (int)$oldline[0];
$tmp['ip'] = $oldline[1];
$tmp['type'] = $type;
$tmp['id'] = $oldline[2];
$tmp['user'] = $oldline[3];
$tmp['sum'] = $sum;
$tmp['extra'] = '';
// order line by id
if (!isset($logs[$tmp['id']])) { $logs[$tmp['id']] = array(); }
$logs[$tmp['id']][$tmp['date']] = $tmp;
}
}
function importFromAttic(&$logs) {
global $conf, $lang;
$base = $conf['olddir'];
$stack = array('');
$context = ''; // namespace
while (count($stack)>0){
$context = array_pop($stack);
$dir = dir($base.'/'.str_replace(':', '/', $context));
while (($file = $dir->read()) !== false) {
if ($file==='.' || $file==='..') { continue; }
$matches = array();
if (preg_match('/([^.]*)\.([^.]*)\..*/', $file, $matches)===1) {
$id = (($context=='')?'':$context.':').$matches[1];
$date = $matches[2];
// check if page & revision are already logged
if (!isset($logs[$id])) { $logs[$id] = array(); }
if (!isset($logs[$id][$date])) {
$tmp = array();
$tmp['date'] = (int)$date;
$tmp['ip'] = '127.0.0.1'; // original ip lost
$tmp['type'] = 'E';
$tmp['id'] = $id;
$tmp['user'] = ''; // original user lost
$tmp['sum'] = '('.$lang['restored'].')'; // original summary lost
$tmp['extra'] = '';
$logs[$id][$date] = $tmp;
}
} else if (is_dir($dir->path.'/'.$file)) {
array_push($stack, (($context=='')?'':$context.':').$file);
}
}
$dir->close();
}
}
function savePerPageChanges($id, &$changes, &$recent) {
ksort($changes); // ensure correct order of changes from attic
foreach ($changes as $date => $tmp) {
$changes[$date] = implode("\t", $tmp)."\n";
$recent[$date] = &$changes[$date];
}
io_saveFile(metaFN($id, '.changes'), implode('', $changes));
}
function resetTimer() {
// Add 5 minutes to the script execution timer...
// This should be much more than needed.
@set_time_limit(5*60);
// Note: Has no effect in safe-mode!
}
function run_import(&$event, $args) {
global $conf;
register_shutdown_function('importoldchangelog_plugin_shutdown');
touch($conf['changelog'].'_importing'); // changelog importing lock
io_saveFile($conf['changelog'], ''); // pre-create changelog
io_lock($conf['changelog']); // hold onto the lock
// load old changelog
$this->resetTimer();
$log = array();
$oldlog = file($conf['changelog_old']);
foreach ($oldlog as $line) {
$this->importOldLog($line, $log);
}
unset($oldlog); // free memory
// look in the attic for unlogged revisions
$this->resetTimer();
$this->importFromAttic($log);
// save per-page changelogs
$this->resetTimer();
$recent = array();
foreach ($log as $id => $page) {
$this->savePerPageChanges($id, $page, $recent);
}
// save recent changes cache
$this->resetTimer();
ksort($recent); // ensure correct order of recent changes
io_unlock($conf['changelog']); // hand off the lock to io_saveFile
io_saveFile($conf['changelog'], implode('', $recent));
@unlink($conf['changelog'].'_importing'); // changelog importing unlock
}
}
function importoldchangelog_plugin_shutdown() {
global $conf;
$path = array();
$path['changelog'] = $conf['changelog'];
$path['importing'] = $conf['changelog'].'_importing';
$path['failed'] = $conf['changelog'].'_failed';
$path['import_ok'] = $conf['changelog'].'_import_ok';
io_unlock($path['changelog']); // guarantee unlocking
if (@file_exists($path['importing'])) {
// import did not finish
rename($path['importing'], $path['failed']) or trigger_error('Importing changelog failed.', E_USER_WARNING);
@unlink($path['import_ok']);
} else {
// import successful
touch($path['import_ok']);
@unlink($path['failed']);
plugin_disable('importoldchangelog'); // only needs to run once
}
}
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