generateNormalizerData.php

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<?php
require_once( dirname( __FILE__ ) . '/../Maintenance.php' );

require_once( dirname( __FILE__ ) . '/../../includes/normal/UtfNormalUtil.php' );

class GenerateNormalizerData extends Maintenance {
        var $dataFile;

        public function __construct() {
                parent::__construct();
                $this->addOption( 'unicode-data-file', 'The local location of the data file ' .
                        'from http://unicode.org/Public/UNIDATA/UnicodeData.txt', false, true );
        }

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

                $this->generateArabic();
                $this->generateMalayalam();
        }

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

                // For the file format, see http://www.unicode.org/reports/tr44/
                $fieldNames = array(
                        'Code',
                        'Name',
                        'General_Category',
                        'Canonical_Combining_Class',
                        'Bidi_Class',
                        'Decomposition_Type_Mapping',
                        'Numeric_Type_Value',
                        'Bidi_Mirrored',
                        'Unicode_1_Name',
                        'ISO_Comment',
                        'Simple_Uppercase_Mapping',
                        'Simple_Lowercase_Mapping',
                        'Simple_Titlecase_Mapping'
                );

                $pairs = array();

                $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 = array();
                        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 = hexSequenceToUtf8( $data['Code'] );
                                $dest = 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";
        }

        function generateMalayalam() {
                $hexPairs = array(
                        # From http://unicode.org/versions/Unicode5.1.0/#Malayalam_Chillu_Characters
                        '0D23 0D4D 200D' => '0D7A',
                        '0D28 0D4D 200D' => '0D7B',
                        '0D30 0D4D 200D' => '0D7C',
                        '0D32 0D4D 200D' => '0D7D',
                        '0D33 0D4D 200D' => '0D7E',

                        # From http://permalink.gmane.org/gmane.science.linguistics.wikipedia.technical/46413
                        '0D15 0D4D 200D' => '0D7F',
                );

                $pairs = array();
                foreach ( $hexPairs as $hexSource => $hexDest ) {
                        $source = hexSequenceToUtf8( $hexSource );
                        $dest = hexSequenceToUtf8( $hexDest );
                        $pairs[$source] = $dest;
                }

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

$maintClass = 'GenerateNormalizerData';
require_once( RUN_MAINTENANCE_IF_MAIN );