maintenance/language/writeMessagesArray.inc

   1 <?php
   2 /**
   3  * Write a messages array as a PHP text.
   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  * @ingroup MaintenanceLanguage
  22  */
  23
  24 /**
  25  * @ingroup MaintenanceLanguage
  26  */
  27 class MessageWriter {
  28         static $optionalComment = 'only translate this message to other languages if you have to change it';
  29         static $ignoredComment = "do not translate or duplicate this message to other languages";
  30
  31         static $messageStructure;
  32         static $blockComments;
  33         static $ignoredMessages;
  34         static $optionalMessages;
  35
  36         /**
  37          * Write a messages array as a PHP text and write it to the messages file.
  38          *
  39          * @param $messages Array: the messages array.
  40          * @param $code String: the language code.
  41          * @param $write Boolean: write to the messages file?
  42          * @param $listUnknown Boolean: list the unknown messages?
  43          * @param $removeUnknown Boolean: whether to remove unkown messages
  44          * @param $messagesFolder String: path to a folder to store the MediaWiki messages. Defaults to the current install.
  45          */
  46         public static function writeMessagesToFile( $messages, $code, $write, $listUnknown, $removeUnknown, $messagesFolder = false ) {
  47                 # Rewrite the messages array
  48                 $messages = self::writeMessagesArray( $messages, $code == 'en', false, $removeUnknown );
  49                 $messagesText = $messages[0];
  50                 $sortedMessages = $messages[1];
  51
  52                 # Write to the file
  53                 if ( $messagesFolder )
  54                         $filename = Language::getFileName( "$messagesFolder/Messages", $code );
  55                 else
  56                         $filename = Language::getMessagesFileName( $code );
  57
  58                 if ( file_exists( $filename ) )
  59                         $contents = file_get_contents( $filename );
  60                 else
  61                         $contents = '<?php
  62 $messages = array(
  63 );
  64 ';
  65
  66                 if( strpos( $contents, '$messages' ) !== false ) {
  67                         $contents = explode( '$messages', $contents );
  68                         if( $messagesText == '$messages' . $contents[1] ) {
  69                                 echo "Generated messages for language $code. Same as the current file.\n";
  70                         } else {
  71                                 if( $write ) {
  72                                         $new = $contents[0];
  73                                         $new .= $messagesText;
  74                                         file_put_contents( $filename, $new );
  75                                         echo "Generated and wrote messages for language $code.\n";
  76                                 } else {
  77                                         echo "Generated messages for language $code. Please run the script again (without the parameter \"dry-run\") to write the array to the file.\n";
  78                                 }
  79                         }
  80                         if( $listUnknown && isset( $sortedMessages['unknown'] ) && !empty( $sortedMessages['unknown'] ) ) {
  81                                 if ( $removeUnknown )
  82                                         echo "\nThe following " . count( $sortedMessages['unknown'] ) . " unknown messages have been removed:\n";
  83                                 else
  84                                         echo "\nThere are " . count( $sortedMessages['unknown'] ) . " unknown messages, please check them:\n";
  85                                 foreach( $sortedMessages['unknown'] as $key => $value ) {
  86                                         echo "* " . $key . "\n";
  87                                 }
  88                         }
  89                 } else {
  90                         echo "Generated messages for language $code. There seem to be no messages array in the file.\n";
  91                 }
  92         }
  93
  94         /**
  95          * Write a messages array as a PHP text.
  96          *
  97          * @param $messages Array: the messages array.
  98          * @param $ignoredComments Boolean: show comments about ignored and optional
  99          *                         messages? (For English.)
 100          * @param $prefix String: base path for messages.inc and messageTypes.inc files
 101          *                or false for default path (this directory)
 102          * @param $removeUnknown Boolean: whether to remove unkown messages
 103          *
 104          * @return Array of the PHP text and the sorted messages array.
 105          */
 106         public static function writeMessagesArray( $messages, $ignoredComments = false, $prefix = false, $removeUnknown = false ) {
 107                 # Load messages
 108                 $dir = $prefix ? $prefix : __DIR__;
 109
 110                 require( $dir . '/messages.inc' );
 111                 self::$messageStructure = $wgMessageStructure;
 112                 self::$blockComments = $wgBlockComments;
 113
 114                 require( $dir . '/messageTypes.inc' );
 115                 self::$ignoredMessages = $wgIgnoredMessages;
 116                 self::$optionalMessages = $wgOptionalMessages;
 117
 118                 # Sort messages to blocks
 119                 $sortedMessages['unknown'] = $messages;
 120                 foreach( self::$messageStructure as $blockName => $block ) {
 121                         /**
 122                          * @var $block array
 123                          */
 124                         foreach( $block as $key ) {
 125                                 if( array_key_exists( $key, $sortedMessages['unknown'] ) ) {
 126                                         $sortedMessages[$blockName][$key] = $sortedMessages['unknown'][$key];
 127                                         unset( $sortedMessages['unknown'][$key] );
 128                                 }
 129                         }
 130                 }
 131
 132                 # Write all the messages
 133                 $messagesText = "\$messages = array(
 134 ";
 135                 foreach( $sortedMessages as $block => $messages ) {
 136                         # Skip if it's the block of unknown messages - handle that in the end of file
 137                         if( $block == 'unknown' ) {
 138                                 continue;
 139                         }
 140
 141                         if( $ignoredComments ) {
 142                                 $ignored = self::$ignoredMessages;
 143                                 $optional = self::$optionalMessages;
 144                         } else {
 145                                 $ignored = array();
 146                                 $optional = array();
 147                         }
 148                         $comments = self::makeComments( array_keys( $messages ), $ignored, $optional );
 149
 150                         # Write the block
 151                         $messagesText .= self::writeMessagesBlock( self::$blockComments[$block], $messages, $comments );
 152                 }
 153
 154                 # Write the unknown messages, alphabetically sorted.
 155                 # Of course, we don't have any comments for them, because they are unknown.
 156                 if ( !$removeUnknown ) {
 157                         ksort( $sortedMessages['unknown'] );
 158                         $messagesText .= self::writeMessagesBlock( 'Unknown messages', $sortedMessages['unknown'] );
 159                 }
 160                 $messagesText .= ");
 161 ";
 162                 return array( $messagesText, $sortedMessages );
 163         }
 164
 165         /**
 166          * Generates an array of comments for messages.
 167          *
 168          * @param $messages Array: key of messages.
 169          * @param $ignored Array: list of ingored message keys.
 170          * @param $optional Array: list of optional message keys.
 171          * @return array
 172          */
 173         public static function makeComments( $messages, $ignored, $optional ) {
 174                 # Comment collector
 175                 $commentArray = array();
 176
 177                 # List of keys only
 178                 foreach( $messages as $key ) {
 179                         if( in_array( $key, $ignored ) ) {
 180                                 $commentArray[$key] = ' # ' . self::$ignoredComment;
 181                         } elseif( in_array( $key, $optional ) ) {
 182                                 $commentArray[$key] = ' # ' . self::$optionalComment;
 183                         }
 184                 }
 185
 186                 return $commentArray;
 187         }
 188
 189         /**
 190          * Write a block of messages to PHP.
 191          *
 192          * @param $blockComment String: the comment of whole block.
 193          * @param $messages Array: the block messages.
 194          * @param $messageComments Array: optional comments for messages in this block.
 195          * @param $prefix String: prefix for every line, for indenting purposes.
 196          *
 197          * @return string The block, formatted in PHP.
 198          */
 199         public static function writeMessagesBlock( $blockComment, $messages,
 200                 $messageComments = array(), $prefix = '' ) {
 201
 202                 $blockText = '';
 203
 204                 # Skip the block if it includes no messages
 205                 if( empty( $messages ) ) {
 206                         return '';
 207                 }
 208
 209                 # Format the block comment (if exists); check for multiple lines comments
 210                 if( !empty( $blockComment ) ) {
 211                         if( strpos( $blockComment, "\n" ) === false ) {
 212                                 $blockText .= "$prefix# $blockComment
 213 ";
 214                         } else {
 215                                 $blockText .= "$prefix/*
 216 $blockComment
 217 */
 218 ";
 219                         }
 220                 }
 221
 222                 # Get max key length
 223                 $maxKeyLength = max( array_map( 'strlen', array_keys( $messages ) ) );
 224
 225                 # Format the messages
 226                 foreach( $messages as $key => $value ) {
 227                         # Add the key name
 228                         $blockText .= "$prefix'$key'";
 229
 230                         # Add the appropriate block whitespace
 231                         $blockText .= str_repeat( ' ', $maxKeyLength - strlen( $key ) );
 232
 233                         # Refer to the value
 234                         $blockText .= ' => ';
 235
 236                         # Check for the appropriate apostrophe and add the value
 237                         # Quote \ here, because it needs always escaping
 238                         $value = addcslashes( $value, '\\' );
 239
 240                         # For readability
 241                         $single = "'";
 242                         $double = '"';
 243
 244                         if( strpos( $value, $single ) === false ) {
 245                                 # Nothing ugly, just use '
 246                                 $blockText .= $single . $value . $single;
 247                         } elseif( strpos( $value, $double ) === false && !preg_match('/\$[a-zA-Z_\x7f-\xff]/', $value) ) {
 248                                 # No "-quotes, no variables that need quoting, use "
 249                                 $blockText .= $double . $value . $double;
 250                         } else {
 251                                 # Something needs quoting, pick the quote which causes less quoting
 252                                 $quote = substr_count( $value, $double ) + substr_count( $value, '$' ) >= substr_count( $value, $single ) ? $single : $double;
 253                                 if( $quote === $double ) {
 254                                         $extra = '$';
 255                                 } else {
 256                                         $extra = '';
 257                                 }
 258                                 $blockText .= $quote . addcslashes( $value, $quote . $extra ) . $quote;
 259                         }
 260
 261                         # Comma
 262                         $blockText .= ',';
 263
 264                         # Add comments, if there is any
 265                         if( array_key_exists( $key, $messageComments ) ) {
 266                                 $blockText .= $messageComments[$key];
 267                         }
 268
 269                         # Newline
 270                         $blockText .= "
 271 ";
 272                 }
 273
 274                 # Newline to end the block
 275                 $blockText .= "
 276 ";
 277
 278                 return $blockText;
 279         }
 280 }