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If extracting text from a fallback file (ie forced), allow the text to be used

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Trenton Holmes 2022-12-30 13:07:29 -08:00 committed by Trenton H
parent 28b26eb4c7
commit 26c7fad005
1 changed files with 21 additions and 11 deletions
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32
src/paperless_tesseract/parsers.py
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@ -1,6 +1,8 @@
import json
import os
import re
from pathlib import Path
from typing import Optional
from django.conf import settings
from documents.parsers import DocumentParser
@ -99,7 +101,7 @@ class RasterisedDocumentParser(DocumentParser):
self.log("warning", f"Error while calculating DPI for image {image}: {e}")
return None
def extract_text(self, sidecar_file, pdf_file):
def extract_text(self, sidecar_file: Optional[Path], pdf_file: Path):
# When re-doing OCR, the sidecar contains ONLY the new text, not
# the whole text, so do not utilize it in that case
if (
@ -139,11 +141,15 @@ class RasterisedDocumentParser(DocumentParser):
self.log("debug", f"Detected language {lang}")
if lang in {
"ar", # Arabic
"he", # Hebrew,
"fa", # Persian
}:
if (
lang
in {
"ar", # Arabic
"he", # Hebrew,
"fa", # Persian
}
and pdf_file.name != "archive-fallback.pdf"
):
raise RtlLanguageException()
return stripped
except RtlLanguageException:
@ -275,7 +281,7 @@ class RasterisedDocumentParser(DocumentParser):
return ocrmypdf_args
def parse(self, document_path, mime_type, file_name=None):
def parse(self, document_path: Path, mime_type, file_name=None):
# This forces tesseract to use one core per page.
os.environ["OMP_THREAD_LIMIT"] = "1"
@ -300,8 +306,8 @@ class RasterisedDocumentParser(DocumentParser):
import ocrmypdf
from ocrmypdf import InputFileError, EncryptedPdfError
archive_path = os.path.join(self.tempdir, "archive.pdf")
sidecar_file = os.path.join(self.tempdir, "sidecar.txt")
archive_path = Path(os.path.join(self.tempdir, "archive.pdf"))
sidecar_file = Path(os.path.join(self.tempdir, "sidecar.txt"))
args = self.construct_ocrmypdf_parameters(
document_path,
@ -335,8 +341,12 @@ class RasterisedDocumentParser(DocumentParser):
f"Attempting force OCR to get the text.",
)
archive_path_fallback = os.path.join(self.tempdir, "archive-fallback.pdf")
sidecar_file_fallback = os.path.join(self.tempdir, "sidecar-fallback.txt")
archive_path_fallback = Path(
os.path.join(self.tempdir, "archive-fallback.pdf"),
)
sidecar_file_fallback = Path(
os.path.join(self.tempdir, "sidecar-fallback.txt"),
)
# Attempt to run OCR with safe settings.