wikimedia / mediawiki

maintenance/language/generateNormalizerDataAr.php

<?php

For compatibility and reusability of your code, PSR1 recommends that a file should introduce either new symbols (like classes, functions, etc.) or have side-effects (like outputting something, or including other files), but not both at the same time. The first symbol is defined on line 33 and the first side effect is on line 24.

/**
 * Generates the normalizer data file for Arabic.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 * http://www.gnu.org/copyleft/gpl.html
 *
 * @file
 * @ingroup MaintenanceLanguage
 */

require_once __DIR__ . '/../Maintenance.php';

/**
 * Generates the normalizer data file for Arabic.
 *
 * This data file is used after normalizing to NFC.
 *
 * @ingroup MaintenanceLanguage
 */
class GenerateNormalizerDataAr extends Maintenance {
	public function __construct() {
		parent::__construct();
		$this->addDescription( 'Generate the normalizer data file for Arabic' );
		$this->addOption( 'unicode-data-file', 'The local location of the data file ' .
			'from http://unicode.org/Public/UNIDATA/UnicodeData.txt', false, true );
	}

	public function getDbType() {
		return Maintenance::DB_NONE;
	}

	public function execute() {
		if ( !$this->hasOption( 'unicode-data-file' ) ) {
			$dataFile = 'UnicodeData.txt';
			if ( !file_exists( $dataFile ) ) {
				$this->error( "Unable to find UnicodeData.txt. Please specify " .
					"its location with --unicode-data-file=<FILE>" );
				exit( 1 );

The method execute() contains an exit expression.

			}
		} else {
			$dataFile = $this->getOption( 'unicode-data-file' );
			if ( !file_exists( $dataFile ) ) {
				$this->error( 'Unable to find the specified data file.' );
				exit( 1 );

The method execute() contains an exit expression.

			}
		}

		$file = fopen( $dataFile, 'r' );
		if ( !$file ) {
			$this->error( 'Unable to open the data file.' );
			exit( 1 );

The method execute() contains an exit expression.

		}

		// For the file format, see http://www.unicode.org/reports/tr44/
		$fieldNames = [
			'Code',
			'Name',
			'General_Category',
			'Canonical_Combining_Class',
			'Bidi_Class',
			'Decomposition_Type_Mapping',
			'Numeric_Type_Value_6',
			'Numeric_Type_Value_7',
			'Numeric_Type_Value_8',
			'Bidi_Mirrored',
			'Unicode_1_Name',
			'ISO_Comment',
			'Simple_Uppercase_Mapping',
			'Simple_Lowercase_Mapping',
			'Simple_Titlecase_Mapping'
		];

		$pairs = [];

		$lineNum = 0;
		while ( false !== ( $line = fgets( $file ) ) ) {
			++$lineNum;

			# Strip comments
			$line = trim( substr( $line, 0, strcspn( $line, '#' ) ) );
			if ( $line === '' ) {
				continue;
			}

			# Split fields
			$numberedData = explode( ';', $line );
			$data = [];
			foreach ( $fieldNames as $number => $name ) {
				$data[$name] = $numberedData[$number];
			}

			$code = base_convert( $data['Code'], 16, 10 );
			if ( ( $code >= 0xFB50 && $code <= 0xFDFF ) # Arabic presentation forms A
				|| ( $code >= 0xFE70 && $code <= 0xFEFF ) # Arabic presentation forms B
			) {
				if ( $data['Decomposition_Type_Mapping'] === '' ) {
					// No decomposition
					continue;
				}
				if ( !preg_match( '/^ *(<\w*>) +([0-9A-F ]*)$/',
					$data['Decomposition_Type_Mapping'], $m )
				) {
					$this->error( "Can't parse Decomposition_Type/Mapping on line $lineNum" );
					$this->error( $line );
					continue;
				}

				$source = UtfNormal\Utils::hexSequenceToUtf8( $data['Code'] );
				$dest = UtfNormal\Utils::hexSequenceToUtf8( $m[2] );
				$pairs[$source] = $dest;
			}
		}

		global $IP;
		file_put_contents( "$IP/serialized/normalize-ar.ser", serialize( $pairs ) );
		echo "ar: " . count( $pairs ) . " pairs written.\n";
	}
}

$maintClass = 'GenerateNormalizerDataAr';
require_once RUN_MAINTENANCE_IF_MAIN;