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BUG: cope with encoding with too many differences #2873

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Sep 26, 2024
Merged

BUG: cope with encoding with too many differences #2873

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3 changes: 2 additions & 1 deletion pypdf/_cmap.py
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Original file line number Diff line number Diff line change
Expand Up @@ -207,7 +207,8 @@ def parse_encoding(
x = o
else: # isinstance(o,str):
try:
encoding[x] = adobe_glyphs[o] # type: ignore
if x < len(encoding):
encoding[x] = adobe_glyphs[o] # type: ignore
except Exception:
encoding[x] = o # type: ignore
if o == " ":
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11 changes: 11 additions & 0 deletions tests/test_cmap.py
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Expand Up @@ -248,3 +248,14 @@ def test_unigb_utf16():
name = "iss2812.pdf"
reader = PdfReader(BytesIO(get_data_from_url(url, name=name)))
assert "《中国能源展望 2060（2024 年版）》编写委员会" in reader.pages[1].extract_text()


@pytest.mark.enable_socket()
def test_too_many_differences():
"""Cf #2836"""
url = (
"https://github.com/user-attachments/files/16911741/dumb_extract_text_crash.pdf"
)
name = "iss2836.pdf"
reader = PdfReader(BytesIO(get_data_from_url(url, name=name)))
assert reader.pages[0].extract_text() == ""
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