includes/cachev.php

   1 <?php
   2 /*=====================================================================*\
   3 || ###################################################################
   4 || # ViewSVN [#]version[#]
   5 || # Copyright ©2002-[#]year[#] Iris Studios, Inc.
   6 || #
   7 || # This program is free software; you can redistribute it and/or modify
   8 || # it under the terms of the GNU General Public License as published by
   9 || # the Free Software Foundation; version [#]gpl[#] of the License.
  10 || #
  11 || # This program is distributed in the hope that it will be useful, but
  12 || # WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13 || # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  14 || # more details.
  15 || #
  16 || # You should have received a copy of the GNU General Public License along
  17 || # with this program; if not, write to the Free Software Foundation, Inc.,
  18 || # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
  19 || ###################################################################
  20 \*=====================================================================*/
  21
  22 /**
  23 * File container for cacheV class
  24 *
  25 * @package      ViewSVN
  26 */
  27
  28 /**
  29 * cacheV
  30 *
  31 * This class is responsible for interacting with a given cacheV table.
  32 * It controls rebuilding from scratch, updates, and querying the cache.
  33 *
  34 * @author               Iris Studios, Inc.
  35 * @copyright    Copyright ©2002 - [#]year[#], Iris Studios, Inc.
  36 * @version              $Revision$
  37 * @package              ViewSVN
  38 *
  39 */
  40 class cacheV
  41 {
  42         /**
  43         * Controller
  44         * @var  object
  45         * @access       private
  46         */
  47         var $controller = null;
  48
  49         /**
  50         * cacheV hash
  51         * @var  string
  52         */
  53         var $hash;
  54
  55         /**
  56         * Record count - the number of records in cacheV
  57         * @var  integer
  58         */
  59         var $count;
  60
  61         /**
  62         * Memcache for all fetched revisions so we don't have to query-dupe
  63         * @var  array
  64         */
  65         var $memcache = array('revs' => array(), 'nodes' => array());
  66
  67         // ###################################################################
  68         /**
  69         * Constructor: initialies the registry
  70         *
  71         * @param        object  Controller
  72         */
  73         function cacheV(&$controller)
  74         {
  75                 $this->controller =& $controller;
  76                 $this->set_hash();
  77         }
  78
  79         // ###################################################################
  80         /**
  81         * Sets the hash so we know what table we're dealing with
  82         *
  83         * @access       public
  84         */
  85         function set_hash()
  86         {
  87                 $this->hash = md5($this->controller->repospath);
  88         }
  89
  90         // ###################################################################
  91         /**
  92         * Returns a node string that has the beginning and ending slashes
  93         * removed to allow it to match to the _nodes cacheV table
  94         *
  95         * @access       public
  96         *
  97         * @param        string  Original string
  98         *
  99         * @return       string  Matchable string
 100         */
 101         function fetch_node_string($node)
 102         {
 103                 return preg_replace('#(^/|/$)#', '', $node);
 104         }
 105
 106         // ###################################################################
 107         /**
 108         * Returns a specific log entry
 109         *
 110         * @access       public
 111         *
 112         * @param        integer Revision number
 113         *
 114         * @return       array   Complete revision/commit entry
 115         */
 116         function fetch_revision($revision)
 117         {
 118                 $revision = $this->controller->registry->clean($revision, TYPE_UINT);
 119
 120                 if (!isset($this->memcache['revs']["$revision"]))
 121                 {
 122                         $this->memcache['revs']["$revision"] = $this->controller->registry->db->query_first("SELECT * FROM {$this->hash}_revs " . ($revision == 0 ? " ORDER BY revision DESC LIMIT 1" : "WHERE revision = $revision"));
 123                         $this->memcache['revs']["$revision"]['files'] = unserialize($this->memcache['revs']["$revision"]['files']);
 124                 }
 125
 126                 return $this->memcache['revs']["$revision"];
 127         }
 128
 129         // ###################################################################
 130         /**
 131         * Returns the revision entry before the specified one
 132         *
 133         * @access       public
 134         *
 135         * @param        integer Revision number
 136         *
 137         * @return       array   Complete revision/commit entry
 138         */
 139         function fetch_prev_revision($revision)
 140         {
 141                 $data = $this->fetch_node();
 142                 $data = $data['history'];
 143
 144                 if (sizeof($data['history']) < 1)
 145                 {
 146                         return $this->fetch_revision(0);
 147                 }
 148
 149                 unset($data[ max(array_keys($data)) ]);
 150
 151                 return $this->fetch_revision(max(array_keys($data)));
 152         }
 153
 154         // ###################################################################
 155         /**
 156         * Returns the latest revision that the file is at
 157         *
 158         * @access       public
 159         *
 160         * @return       integer HEAD revision
 161         */
 162         function fetch_head_revision()
 163         {
 164                 $data = $this->fetch_node();
 165                 $data = $data['history'];
 166
 167                 return max(array_keys($data));
 168         }
 169
 170         // ###################################################################
 171         /**
 172         * Fetches the latest revision for a given path
 173         *
 174         * @access       public
 175         *
 176         * @return       integer Latest revision; FALSE if none (not in HEAD)
 177         */
 178         function fetch_node()
 179         {
 180                 $node = $this->fetch_node_string($this->controller->path);
 181                 if (!isset($this->memcache['nodes']["$node"]))
 182                 {
 183                         $result = $this->controller->registry->db->query_first("SELECT * FROM {$this->hash}_nodes WHERE name = '" . $this->controller->registry->escape($node) . "'");
 184                         if ($result == false)
 185                         {
 186                                 return false;
 187                         }
 188
 189                         $this->memcache['nodes']["$node"] = $result;
 190                         $this->memcache['nodes']["$node"]['history'] = unserialize($this->memcache['nodes']["$node"]['history']);
 191                 }
 192
 193                 return $this->memcache['nodes']["$node"];
 194         }
 195
 196         // ###################################################################
 197         /**
 198         * Checks to see if a given node is a directory. Returns TRUE if so.
 199         *
 200         * @access       public
 201         *
 202         * @return       bool    TRUE if directory, FALSE if not
 203         */
 204         function isdir()
 205         {
 206                 $node = $this->fetch_node();
 207                 if ($node['node'] == 'dir')
 208                 {
 209                         return true;
 210                 }
 211
 212                 return false;
 213         }
 214
 215         // ###################################################################
 216         /**
 217         * Checks to see if it's necessary to rebuild the cacheV table for the
 218         * current repository. This is done by making sure $count > 0. If not,
 219         * then rebuild() is run. This also checks against the cacheV table
 220         * to make sure that it's up-to-date against the root repository.
 221         *
 222         * @access       public
 223         */
 224         function exec_build()
 225         {
 226                 $result = $this->controller->registry->db->query_first("SELECT MAX(revision) AS max FROM {$this->hash}_revs");
 227                 $this->count = $result['max'];
 228
 229                 // time to go from the start
 230                 if ($this->count == 0)
 231                 {
 232                         $this->build(null);
 233                 }
 234                 else
 235                 {
 236                         // send an Xquery to SVN to see if we need to update
 237                         $query = $this->controller->library->svn('info --xml ' . $this->controller->repospath);
 238                         $query = implode("\n", $query);
 239
 240                         $tree = $this->controller->registry->xml->parse($query);
 241
 242                         if ($tree['info']['entry']['revision'] != $this->count)
 243                         {
 244                                 $this->build($this->count);
 245                         }
 246                 }
 247         }
 248
 249         // ###################################################################
 250         /**
 251         * Builds the cacheV table. This can be used to build only part of the
 252         * cache or the entire thing, if the revision is set to NULL.
 253         *
 254         * @access       public
 255         *
 256         * @param        integer Lower (current) revision
 257         */
 258         function build($revision)
 259         {
 260                 $start = microtime();
 261
 262                 // get _revs
 263                 $output = $this->controller->library->svn('log --xml -v ' . ($revision !== null ? '-r' . $revision . ':HEAD ' : '') . $this->controller->repospath);
 264                 $output = implode("\n", $output);
 265                 $tree = $this->controller->registry->xml->parse($output);
 266
 267                 // get _nodes
 268                 $output = $this->controller->library->svn('info --xml -R ' . ($revision !== null ? '-r' . $revision . ':HEAD ' : '') . $this->controller->repospath);
 269                 $output = implode("\n", $output);
 270                 $infolist = $this->controller->registry->xml->parse($output);
 271
 272                 // other part of _nodes: properties
 273                 $output = $this->controller->library->svn('proplist -v -R ' . ($revision !== null ? ' -r' . $revision . ':HEAD ' : '') . $this->controller->repospath);
 274                 foreach ($output AS $line)
 275                 {
 276                         if (preg_match('#^Properties on \'(.*?)\':$#', $line, $bits))
 277                         {
 278                                 $proplist["$index"]["$curprop"] = trim($proplist["$index"]["$curprop"]);
 279                                 $index = str_replace($this->controller->repospath, '', $bits[1]);
 280                                 $capture = false;
 281                         }
 282                         else
 283                         {
 284                                 if (preg_match('#^\s+(.*)\s:\s(.*)#', $line, $matches))
 285                                 {
 286                                         $curprop = $matches[1];
 287                                         $proplist["$index"]["$curprop"] = $matches[2] . "\n";
 288                                         $capture = true;
 289                                 }
 290                                 else if ($capture == true)
 291                                 {
 292                                         $proplist["$index"]["$curprop"] .= $line . "\n";
 293                                 }
 294                         }
 295                 }
 296
 297                 // construct _revs inserts and the list of add revisions
 298                 foreach ($tree['log']['logentry'] AS $log)
 299                 {
 300                         $this->controller->registry->xml->unify_node($log['paths']['path']);
 301
 302                         $inserts['revs'][] = "($log[revision], '{$log['author']['value']}', '{$log['date']['value']}', '" . $this->controller->registry->escape($log['msg']['value']) . "', '" . $this->controller->registry->escape(serialize($log['paths']['path'])) . "')";
 303
 304                         foreach ($log['paths']['path'] AS $path)
 305                         {
 306                                 if (trim($path['action']) == 'A')
 307                                 {
 308                                         $path['value'] = preg_replace('#^/#', '', $path['value']);
 309                                         $addlist["$path[value]"] = $log['revision'];
 310                                 }
 311                         }
 312                 }
 313
 314                 // construct list of HEAD nodes for _nodes
 315                 foreach ($infolist['info']['entry'] AS $node)
 316                 {
 317                         $history = $this->controller->library->svn('log --xml ' . $node['url']['value']);
 318                         $history = implode("\n", $history);
 319                         $history = $this->controller->registry->xml->parse($history);
 320
 321                         $loglist = array();
 322                         $latestrev = -1;
 323                         foreach ($history['log']['logentry'] AS $log)
 324                         {
 325                                 // WHY THE HELL DOES THIS GET HIT ON REBUILDS?
 326                                 if (!is_array($log))
 327                                 {
 328                                         print_r($node);
 329                                         var_dump($log);
 330                                         continue;
 331                                 }
 332                                 $loglist["$log[revision]"] = array(
 333                                         'revision'      => $log['revision'],
 334                                         'author'        => $log['author']['value'], // why does PHP5 hate this?
 335                                         'date'          => $log['date']['value'],
 336                                         'message'       => $log['msg']['value']
 337                                 );
 338                         }
 339
 340                         $inserts['nodes'][] = "('$node[path]', '" . $node['kind'] . "', " . $node['commit']['revision'] . ", '" . $this->controller->registry->escape(serialize($loglist)) . "', '" . $this->controller->registry->escape(serialize($proplist["$node[path]"])) . "')";
 341                 }
 342
 343                 // insert _revs
 344                 $this->controller->registry->db->query("
 345                         REPLACE INTO {$this->hash}_revs
 346                                 (revision, author, dateline, message, files)
 347                         VALUES
 348                                 " . implode(",\n", $inserts['revs'])
 349                 );
 350
 351                 // insert _nodes
 352                 $this->controller->registry->db->query("
 353                         REPLACE INTO {$this->hash}_nodes
 354                                 (name, node, revision, history, properties)
 355                         VALUES
 356                                 " . implode(",\n", $inserts['nodes'])
 357                 );
 358
 359                 $this->controller->registry->debug("TIME TO (RE)BUILD: " . $this->controller->registry->funct->fetch_microtime_diff($start));
 360         }
 361 }
 362
 363 /*=====================================================================*\
 364 || ###################################################################
 365 || # $HeadURL$
 366 || # $Id$
 367 || ###################################################################
 368 \*=====================================================================*/
 369 ?>