Archive an PDF if it will be changed...batch script...

[NilsRo]

Hi,

I taken the example python batch processing script) and enhance it actually. I like to add text to all PDF files stored on my NAS. To have a fallback I like to archive the original only if it will be changed from ocrmypdf...how that could be achieved? I did not find a setting in the API for this....

Thinking about using

OCRmyPDF/src/ocrmypdf/pdfa.py

Lines 109 to 130 in e7eb8fa

	def file_claims_pdfa(filename: Path):
	"""Determines if the file claims to be PDF/A compliant.
	This only checks if the XMP metadata contains a PDF/A marker. It does not
	do full PDF/A validation.
	"""
	with pikepdf.open(filename) as pdf:
	pdfmeta = pdf.open_metadata()
	if not pdfmeta.pdfa_status:
	return {
	'pass': False,
	'output': 'pdf',
	'conformance': 'No PDF/A metadata in XMP',
	}
	valid_part_conforms = {'1A', '1B', '2A', '2B', '2U', '3A', '3B', '3U'}
	conformance = f'PDF/A-{pdfmeta.pdfa_status}'
	pdfa_dict: dict[str, str | bool] = {}
	if pdfmeta.pdfa_status in valid_part_conforms:
	pdfa_dict['pass'] = True
	pdfa_dict['output'] = 'pdfa'
	pdfa_dict['conformance'] = conformance
	return pdfa_dict

helper to determine if ocr has to be done before....

Cheers,
Nils