generateNormalizerData.php

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<?php
require_once __DIR__ . '/../../includes/normal/UtfNormalUtil.php';

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

class GenerateNormalizerData extends Maintenance {
    public $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;