DOCX-PDF Conversion

[danvergara]

DOCX-PDF

Description

This PR introduces the DOCX-PDF conversion and that means that is possible to convert PDF files to DOCX and the otherwise is also true.
This one was though, because there's no easy way to do this by just using Go or OSS, the best solution out there was using UniDOC but it's proprietary software.

So looking around, I found out that how other projects worked around this limitation, it's basically calling libreoffice. Go's standard library provides a package called os/exec which allows us to runs external commands and that's what I needed to work with libreoffice.

DOCX -> PDF

libreoffice --headless --convert-to pdf:writer_pdf_Export --outdir <out_dir> <foo.docx>

PDF -> DOCX

libreoffice --headless --infilter='writer_pdf_import' --convert-to docx:"MS Word 2007 XML" --outdir <out_dir> <foo.pdf>

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

QA'd this change locally with multiple files and I added more tests.

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have checked my code and corrected any misspellings

[rdleon]

Did a visual check of the code, looks good. Not so good that you have to add libreoffice just to support this.

[danvergara]

Did a visual check of the code, looks good. Not so good that you have to add libreoffice just to support this.

Libreoffice was the only Open Source option available. The other one was unidoc which is not Open Source.