PDF which name has space(s) would fail the command execution

[ohchiko]

Problem

Generating watermark on a PDF document which name has space(s) fails the command execution. I have not try this on a Word file.

Reproduce

$document = 'pdf doc with spaces.pdf';
WatermarkFactory::load($document)->setText('simple watermark')->generate();  // returns empty string instead

Temporary Solution

Using escapeshellarg() PHP function on getCommand() function on Yasapurnama\DocumentWatermark\PDFWatermark class.

// Yasapurnama\DocumentWatermark\PDFWatermark

...
        if ($this->image) {
            return sprintf(
                '%s %s %s %s %s %s',
                $this->getBinExecutable(),
                escapeshellarg($this->documentPath),  // escape the path as shell argument
                escapeshellarg($this->image),  // escape the path as shell argument
                escapeshellarg($this->outputFile),  // escape the path as shell argument
                $this->getPositionOption(),
                $this->getOpacityOption()
            );
        }

        return sprintf(
            '%s %s "%s" %s %s %s %s',
            $this->getBinExecutable(),
            escapeshellarg($this->documentPath),  // escape the path as shell argument
            $this->text,
            escapeshellarg($this->outputFile),  // escape the path as shell argument
            $this->getFontColorOption(),
            $this->getFontSizeOption(),
            $this->getPositionOption()
        );
...