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