generateUcfirstOverrides.php

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<?php
require_once __DIR__ . '/../Maintenance.php';
 
class GenerateUcfirstOverrides extends Maintenance {
 
    public function __construct() {
        parent::__construct();
        $this->addDescription(
            'Generates a php source file containing a definition for mb_strtoupper overrides' );
        $this->addOption( 'outfile', 'Output file', true, true, 'o' );
        $this->addOption( 'override', 'Char table we want to override', true, true );
        $this->addOption( 'with', 'Char table we want to obtain', true, true );
    }
 
    public function execute() {
        $outfile = $this->getOption( 'outfile' );
        $from = $this->loadJson( $this->getOption( 'override' ) );
        $to = $this->loadJson( $this->getOption( 'with' ) );
        $overrides = [];
 
        foreach ( $from as $lc => $uc ) {
            $ref = $to[$lc] ?? null;
            if ( $ref !== null && $ref !== $uc ) {
                $overrides[$lc] = $ref;
            }
        }
        $writer = new StaticArrayWriter();
        file_put_contents(
            $outfile,
            $writer->create( $overrides, 'File created by generateUcfirstOverrides.php' )
        );
    }
 
    private function loadJson( $filename ) {
        $data = file_get_contents( $filename );
        if ( $data === false ) {
            $msg = sprintf( "Could not load data from file '%s'\n", $filename );
            $this->fatalError( $msg );
        }
        $json = json_decode( $data, true );
        if ( $json === null ) {
            $msg = sprintf( "Invalid json in the data file %s\n", $filename );
            $this->fatalError( $msg, 2 );
        }
        return $json;
    }
}
 
$maintClass = GenerateUcfirstOverrides::class;
require_once RUN_MAINTENANCE_IF_MAIN;