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                 $this->controller->registry->debug("hash: $this->hash");
  89         }
  90
  91         // ###################################################################
  92         /**
  93         * Returns a node string that has the beginning and ending slashes
  94         * removed to allow it to match to the _nodes cacheV table
  95         *
  96         * @access       public
  97         *
  98         * @param        string  Original string
  99         *
 100         * @return       string  Matchable string
 101         */
 102         function fetch_node_string($node)
 103         {
 104                 return preg_replace('#(^/|/$)#', '', $node);
 105         }
 106
 107         // ###################################################################
 108         /**
 109         * Returns a specific log entry
 110         *
 111         * @access       public
 112         *
 113         * @param        integer Revision number
 114         *
 115         * @return       array   Complete revision/commit entry
 116         */
 117         function fetch_revision($revision)
 118         {
 119                 $revision = $this->controller->registry->clean($revision, TYPE_UINT);
 120
 121                 if (!isset($this->memcache['revs']["$revision"]))
 122                 {
 123                         $this->memcache['revs']["$revision"] = $this->controller->registry->db->query_first("SELECT * FROM {$this->hash}_revs " . ($revision == 0 ? " ORDER BY revision DESC LIMIT 1" : "WHERE revision = $revision"));
 124                         $this->memcache['revs']["$revision"]['files'] = unserialize($this->memcache['revs']["$revision"]['files']);
 125                 }
 126
 127                 return $this->memcache['revs']["$revision"];
 128         }
 129
 130         // ###################################################################
 131         /**
 132         * Returns the revision entry before the specified one
 133         *
 134         * @access       public
 135         *
 136         * @param        integer Revision number
 137         *
 138         * @return       array   Complete revision/commit entry
 139         */
 140         function fetch_prev_revision($revision)
 141         {
 142                 $data = $this->fetch_node(($this->controller->path == '/' ? $this->controller->repos : $this->controller->path));
 143                 $data = $data['history'];
 144                 if (sizeof($data) < 1)
 145                 {
 146                         return $this->fetch_revision(0);
 147                 }
 148
 149                 $list = array_keys($data);
 150                 $key = array_search($revision, $list);
 151
 152                 if ($revision == 'HEAD')
 153                 {
 154                         $key = 0;
 155                 }
 156
 157                 $key++; // go to the next earliest revision
 158                 if (!isset($list["$key"]))
 159                 {
 160                         return -1;
 161                 }
 162
 163                 return $this->fetch_revision($list["$key"]);
 164         }
 165
 166         // ###################################################################
 167         /**
 168         * Returns the latest revision that the file is at
 169         *
 170         * @access       public
 171         *
 172         * @return       integer HEAD revision
 173         */
 174         function fetch_head_revision()
 175         {
 176                 $data = $this->fetch_node();
 177                 $data = $data['history'];
 178
 179                 return max(array_keys($data));
 180         }
 181
 182         // ###################################################################
 183         /**
 184         * Fetches the latest revision for a given path
 185         *
 186         * @access       public
 187         *
 188         * @param        string  Node override
 189         *
 190         * @return       integer Latest revision; FALSE if none (not in HEAD)
 191         */
 192         function fetch_node($node = false)
 193         {
 194                 $node = $this->fetch_node_string(($node === false ? $this->controller->path : $node));
 195                 if (!isset($this->memcache['nodes']["$node"]))
 196                 {
 197                         $result = $this->controller->registry->db->query_first("SELECT * FROM {$this->hash}_nodes WHERE name = '" . $this->controller->registry->escape($node) . "'");
 198                         if ($result == false)
 199                         {
 200                                 return false;
 201                         }
 202
 203                         $this->memcache['nodes']["$node"] = $result;
 204                         $this->memcache['nodes']["$node"]['history'] = unserialize($this->memcache['nodes']["$node"]['history']);
 205                 }
 206
 207                 return $this->memcache['nodes']["$node"];
 208         }
 209
 210         // ###################################################################
 211         /**
 212         * Checks to see if a given node is a directory. Returns TRUE if so.
 213         *
 214         * @access       public
 215         *
 216         * @return       bool    TRUE if directory, FALSE if not
 217         */
 218         function isdir()
 219         {
 220                 $node = $this->fetch_node();
 221                 if ($node['node'] == 'dir')
 222                 {
 223                         return true;
 224                 }
 225
 226                 return false;
 227         }
 228
 229         // ###################################################################
 230         /**
 231         * Checks to see if it's necessary to rebuild the cacheV table for the
 232         * current repository. This is done by making sure $count > 0. If not,
 233         * then rebuild() is run. This also checks against the cacheV table
 234         * to make sure that it's up-to-date against the root repository.
 235         *
 236         * @access       public
 237         */
 238         function exec_build()
 239         {
 240                 $result = $this->controller->registry->db->query_first("SELECT MAX(revision) AS max FROM {$this->hash}_revs");
 241                 $this->count = $result['max'];
 242
 243                 // time to go from the start
 244                 if ($this->count == 0)
 245                 {
 246                         $this->build(null);
 247                 }
 248                 else
 249                 {
 250                         // send an Xquery to SVN to see if we need to update
 251                         $query = $this->controller->library->svn('info --xml ' . $this->controller->repospath);
 252                         $query = implode("\n", $query);
 253
 254                         $tree = $this->controller->registry->xml->parse($query);
 255
 256                         if ($tree['info']['entry']['revision'] != $this->count)
 257                         {
 258                                 $this->build($this->count);
 259                         }
 260                 }
 261         }
 262
 263         // ###################################################################
 264         /**
 265         * Builds the cacheV table. This can be used to build only part of the
 266         * cache or the entire thing, if the revision is set to NULL.
 267         *
 268         * @access       public
 269         *
 270         * @param        integer Lower (current) revision
 271         */
 272         function build($revision)
 273         {
 274                 $start = microtime();
 275
 276                 // get _revs
 277                 $output = $this->controller->library->svn('log --xml -v ' . ($revision !== null ? '-r' . $revision . ':HEAD ' : '') . $this->controller->repospath);
 278                 $output = implode("\n", $output);
 279                 $tree = $this->controller->registry->xml->parse($output);
 280
 281                 // get _nodes
 282                 $output = $this->controller->library->svn('info --xml -R ' . ($revision !== null ? '-r' . $revision . ':HEAD ' : '') . $this->controller->repospath);
 283                 $output = implode("\n", $output);
 284                 $infolist = $this->controller->registry->xml->parse($output);
 285
 286                 // other part of _nodes: properties
 287                 $output = $this->controller->library->svn('proplist -v -R ' . ($revision !== null ? ' -r' . $revision . ':HEAD ' : '') . $this->controller->repospath);
 288                 foreach ($output AS $line)
 289                 {
 290                         if (preg_match('#^Properties on \'(.*?)\':$#', $line, $bits))
 291                         {
 292                                 $proplist["$index"]["$curprop"] = trim($proplist["$index"]["$curprop"]);
 293                                 $index = str_replace($this->controller->repospath, '', $bits[1]);
 294                                 $capture = false;
 295                         }
 296                         else
 297                         {
 298                                 if (preg_match('#^\s+(.*)\s:\s(.*)#', $line, $matches))
 299                                 {
 300                                         $curprop = $matches[1];
 301                                         $proplist["$index"]["$curprop"] = $matches[2] . "\n";
 302                                         $capture = true;
 303                                 }
 304                                 else if ($capture == true)
 305                                 {
 306                                         $proplist["$index"]["$curprop"] .= $line . "\n";
 307                                 }
 308                         }
 309                 }
 310
 311                 // construct _revs inserts and the list of add revisions
 312                 foreach ($tree['log']['logentry'] AS $log)
 313                 {
 314                         $this->controller->registry->xml->unify_node($log['paths']['path']);
 315
 316                         $inserts['revs'][] = "($log[revision], '{$log['author']['value']}', '{$log['date']['value']}', '" . $this->controller->registry->escape($log['msg']['value']) . "', '" . $this->controller->registry->escape(serialize($log['paths']['path'])) . "')";
 317
 318                         foreach ($log['paths']['path'] AS $path)
 319                         {
 320                                 if (trim($path['action']) == 'A')
 321                                 {
 322                                         $path['value'] = preg_replace('#^/#', '', $path['value']);
 323                                         $addlist["$path[value]"] = $log['revision'];
 324                                 }
 325                         }
 326                 }
 327
 328                 // construct list of HEAD nodes for _nodes
 329                 foreach ($infolist['info']['entry'] AS $node)
 330                 {
 331                         $history = $this->controller->library->svn('log --xml ' . $node['url']['value']);
 332                         $history = implode("\n", $history);
 333                         $history = $this->controller->registry->xml->parse($history);
 334
 335                         $loglist = array();
 336                         $latestrev = -1;
 337                         foreach ($history['log']['logentry'] AS $log)
 338                         {
 339                                 // WHY THE HELL DOES THIS GET HIT ON REBUILDS?
 340                                 if (!is_array($log))
 341                                 {
 342                                         print_r($node);
 343                                         var_dump($log);
 344                                         continue;
 345                                 }
 346                                 $loglist["$log[revision]"] = array(
 347                                         'revision'      => $log['revision'],
 348                                         'author'        => $log['author']['value'], // why does PHP5 hate this?
 349                                         'date'          => $log['date']['value'],
 350                                         'message'       => $log['msg']['value']
 351                                 );
 352                         }
 353
 354                         $path = str_replace($this->controller->repospath, '', $node['url']['value']);
 355
 356                         $inserts['nodes'][] = "('$path', '" . $node['kind'] . "', " . $node['commit']['revision'] . ", '" . $this->controller->registry->escape(serialize($loglist)) . "', '" . $this->controller->registry->escape(serialize($proplist["$path"])) . "')";
 357                 }
 358
 359                 // insert _revs
 360                 $this->controller->registry->db->query("
 361                         REPLACE INTO {$this->hash}_revs
 362                                 (revision, author, dateline, message, files)
 363                         VALUES
 364                                 " . implode(",\n", $inserts['revs'])
 365                 );
 366
 367                 // insert _nodes
 368                 $this->controller->registry->db->query("
 369                         REPLACE INTO {$this->hash}_nodes
 370                                 (name, node, revision, history, properties)
 371                         VALUES
 372                                 " . implode(",\n", $inserts['nodes'])
 373                 );
 374
 375                 $this->controller->registry->debug("TIME TO (RE)BUILD: " . $this->controller->registry->funct->fetch_microtime_diff($start));
 376         }
 377 }
 378
 379 /*=====================================================================*\
 380 || ###################################################################
 381 || # $HeadURL$
 382 || # $Id$
 383 || ###################################################################
 384 \*=====================================================================*/
 385 ?>