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fix parse error of some documents by using gs

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This commit is contained in:
Jens Pfeifle
2019-01-29 09:02:33 +01:00
committed by jenspfeifle
parent ff6fd9e5fa
commit 6ab21afeb6
1 changed files with 11 additions and 1 deletions
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12
src/paperless_tesseract/parsers.py
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@@ -45,13 +45,23 @@ class RasterisedDocumentParser(DocumentParser):
"""
out_path = os.path.join(self.tempdir, "convert.png")
gs_out_path = os.path.join(self.tempdir, "gs_out.png")
# Run convert to get a decent thumbnail
# https://github.com/danielquinn/paperless/issues/447
# call gs first
environment = os.environ.copy()
cmd = ["gs", "-q", "-sDEVICE=pngalpha",
"-o", gs_out_path, self.document_path]
if not subprocess.Popen(cmd, env=environment).wait() == 0:
raise ParseError("Thumbnail (gs) failed at {}".format(cmd))
# then run convert on the output from gs
run_convert(
self.CONVERT,
"-scale", "500x5000",
"-alpha", "remove",
"{}[0]".format(self.document_path),
"gs_out_path",
out_path
)