searchanddisplace-ingest/app/Ingest/Office.php

<?php

namespace App\Ingest;

use Symfony\Component\Process\Process;

class Office
{
    protected $id;
    protected $directory;

    public function __construct()
    {
        $this->id = uniqid();
        $this->directory = 'soffice-dir-' . $this->id;

        (new Process(['export HOME=' . env('USER_HOME_PATH')]))->run();
    }

    public function run($convertTo, $filePath, $directoryPath)
    {
        $this->makeTemporaryDirectory();

        $success = $this->runConversion($convertTo, $filePath, $directoryPath);

        // @TODO Does not work at the moment.
//        $this->removeTemporaryDirectory();

        return $success;
    }

    protected function runConversion($convertTo, $filePath, $directoryPath)
    {
        $process = new Process([
            'soffice',
            '--accept="pipe,name=soffice-pipe-' . $this->id . ';urp;StarOffice.ServiceMananger"',
            '-env:UserInstallation=file:///tmp/' . $this->directory,
            '--headless',
            '--convert-to',
            $convertTo,
            $filePath,
            '--outdir',
            $directoryPath
        ]);

        $process->setTimeout(10);

        $process->run();

        return $process->isSuccessful();
    }

    protected function makeTemporaryDirectory()
    {
        (new Process(['mkdir /tmp/' . $this->directory]))->run();
    }

    protected function removeTemporaryDirectory()
    {
        (new Process(['rm -rf /tmp/' . $this->directory]))->run();
    }
}