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ROB: Ignore non-numbers for width when building font width map #3158

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Feb 26, 2025
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ROB: Ignore non-numbers for width when building font width map #3158

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4 changes: 4 additions & 0 deletions pypdf/_cmap.py
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Original file line number Diff line number Diff line change
Expand Up @@ -423,6 +423,10 @@ def build_font_width_map(
# C_first C_last same_W
en = second
width = w[2].get_object()
if not isinstance(width, (int, float)):
logger_warning(f"Expected numeric value for width, got {width}. Ignoring it.", __name__)
w = w[3:]
continue
for c_code in range(st, en + 1):
font_width_map[chr(c_code)] = width
w = w[3:]
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12 changes: 12 additions & 0 deletions tests/test_cmap.py
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Expand Up @@ -305,3 +305,15 @@ def test_standard_encoding(caplog):
page = reader.pages[0]
assert page.extract_text() == "Lorem ipsum"
assert "Advanced encoding" not in caplog.text


@pytest.mark.enable_socket
def test_function_in_font_widths(caplog):
"""Tests for #3153"""
url = "https://github.com/user-attachments/files/18945709/Marseille_pypdf_level_0.2._compressed.pdf"
name = "issue3153.pdf"
reader = PdfReader(BytesIO(get_data_from_url(url, name=name)))

page = reader.pages[455]
assert "La vulnérabilité correspond aux conséquences potentielles" in page.extract_text()
assert "Expected numeric value for width, got {'/Bounds': [0.25, 0.25]," in caplog.text
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