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Fix: decode error in email parser app #10920

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Merged
merged 1 commit into from
Nov 3, 2025
Merged

Fix: decode error in email parser app #10920

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25 changes: 19 additions & 6 deletions rag/app/email.py
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Original file line number Diff line number Diff line change
Expand Up @@ -62,14 +62,27 @@ def chunk(

# get the email main info
def _add_content(msg, content_type):
def _decode_payload(payload, charset, target_list):
try:
target_list.append(payload.decode(charset))
except (UnicodeDecodeError, LookupError):
for enc in ["utf-8", "gb2312", "gbk", "gb18030", "latin1"]:
try:
target_list.append(payload.decode(enc))
break
except UnicodeDecodeError:
continue
else:
target_list.append(payload.decode("utf-8", errors="ignore"))

if content_type == "text/plain":
text_txt.append(
msg.get_payload(decode=True).decode(msg.get_content_charset())
)
payload = msg.get_payload(decode=True)
charset = msg.get_content_charset() or "utf-8"
_decode_payload(payload, charset, text_txt)
elif content_type == "text/html":
html_txt.append(
msg.get_payload(decode=True).decode(msg.get_content_charset())
)
payload = msg.get_payload(decode=True)
charset = msg.get_content_charset() or "utf-8"
_decode_payload(payload, charset, html_txt)
elif "multipart" in content_type:
if msg.is_multipart():
for part in msg.iter_parts():
Expand Down