maintenance/cdb.php

   1 <?php
   2 /**
   3  * cdb inspector tool
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @todo document
  22  * @ingroup Maintenance
  23  */
  24
  25 /** */
  26 require_once __DIR__ . '/commandLine.inc';
  27
  28 function cdbShowHelp( $command ) {
  29         $commandList = array(
  30                 'load' => 'load a cdb file for reading',
  31                 'get' => 'get a value for a key',
  32                 'exit' => 'exit cdb',
  33                 'quit' => 'exit cdb',
  34                 'help' => 'help about a command',
  35         );
  36         if ( !$command ) {
  37                 $command = 'fullhelp';
  38         }
  39         if ( $command === 'fullhelp' ) {
  40                 $max_cmd_len = max( array_map( 'strlen', array_keys( $commandList ) ) );
  41                 foreach ( $commandList as $cmd => $desc ) {
  42                         printf( "%-{$max_cmd_len}s: %s\n", $cmd, $desc );
  43                 }
  44         } elseif ( isset( $commandList[$command] ) ) {
  45                 print "$command: $commandList[$command]\n";
  46         } else {
  47                 print "$command: command does not exist or no help for it\n";
  48         }
  49 }
  50
  51 do {
  52         $bad = false;
  53         $showhelp = false;
  54         $quit = false;
  55         static $fileHandle = false;
  56
  57         $line = Maintenance::readconsole();
  58         if ( $line === false ) {
  59                 exit;
  60         }
  61
  62         $args = explode( ' ', $line );
  63         $command = array_shift( $args );
  64
  65         // process command
  66         switch ( $command ) {
  67                 case 'help':
  68                         // show an help message
  69                         cdbShowHelp( array_shift( $args ) );
  70                         break;
  71                 case 'load':
  72                         if ( !isset( $args[0] ) ) {
  73                                 print "Need a filename there buddy\n";
  74                                 break;
  75                         }
  76                         $file = $args[0];
  77                         print "Loading cdb file $file...";
  78                         try {
  79                                 $fileHandle = CdbReader::open( $file );
  80                         } catch ( CdbException $e ) {
  81                         }
  82
  83                         if ( !$fileHandle ) {
  84                                 print "not a cdb file or unable to read it\n";
  85                         } else {
  86                                 print "ok\n";
  87                         }
  88                         break;
  89                 case 'get':
  90                         if ( !$fileHandle ) {
  91                                 print "Need to load a cdb file first\n";
  92                                 break;
  93                         }
  94                         if ( !isset( $args[0] ) ) {
  95                                 print "Need to specify a key, Luke\n";
  96                                 break;
  97                         }
  98                         try {
  99                                 $res = $fileHandle->get( $args[0] );
 100                         } catch ( CdbException $e ) {
 101                                 print "Unable to read key from file\n";
 102                                 break;
 103                         }
 104                         if ( $res === false ) {
 105                                 print "No such key/value pair\n";
 106                         } elseif ( is_string( $res ) ) {
 107                                 print "$res\n";
 108                         } else {
 109                                 var_dump( $res );
 110                         }
 111                         break;
 112                 case 'quit':
 113                 case 'exit':
 114                         $quit = true;
 115                         break;
 116
 117                 default:
 118                         $bad = true;
 119         } // switch() end
 120
 121         if ( $bad ) {
 122                 if ( $command ) {
 123                         print "Bad command\n";
 124                 }
 125         } else {
 126                 if ( function_exists( 'readline_add_history' ) ) {
 127                         readline_add_history( $line );
 128                 }
 129         }
 130 } while ( !$quit );