Jelix\Installer\AbstractInstaller::copyFile PHP Method

    protected final function copyFile($relativeSourcePath, $targetPath, $overwrite = false)
    {
        $targetPath = $this->expandPath($targetPath);
        if (!$overwrite && file_exists($targetPath)) {
            return;
        }
        $dir = dirname($targetPath);
        \jFile::createDir($dir);
        copy($this->path . 'install/' . $relativeSourcePath, $targetPath);
    }