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fix(language): remove invalid UTF-16 surrogate pairs from input text #1546

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Merged
merged 1 commit into from
Jan 15, 2025
Merged

fix(language): remove invalid UTF-16 surrogate pairs from input text #1546

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9 changes: 9 additions & 0 deletions magic_pdf/libs/language.py
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Original file line number Diff line number Diff line change
Expand Up @@ -12,12 +12,20 @@
from fast_langdetect import detect_language


def remove_invalid_surrogates(text):
# 移除无效的 UTF-16 代理对
return ''.join(c for c in text if not (0xD800 <= ord(c) <= 0xDFFF))


def detect_lang(text: str) -> str:

if len(text) == 0:
return ""

text = text.replace("\n", "")
text = remove_invalid_surrogates(text)

# print(text)
try:
lang_upper = detect_language(text)
except:
Expand All @@ -37,3 +45,4 @@ def detect_lang(text: str) -> str:
print(detect_lang("<html>This is a test</html>"))
print(detect_lang("这个是中文测试。"))
print(detect_lang("<html>这个是中文测试。</html>"))
print(detect_lang("〖\ud835\udc46\ud835〗这是个包含utf-16的中文测试"))
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