open-webui/backend/open_webui/utils/channels.py

32 lines
1.0 KiB
Python

import re
def extract_mentions(message: str, triggerChar: str = "@"):
# Escape triggerChar in case it's a regex special character
triggerChar = re.escape(triggerChar)
pattern = rf"<{triggerChar}([A-Z]):([^|>]+)"
matches = re.findall(pattern, message)
return [{"id_type": id_type, "id": id_value} for id_type, id_value in matches]
def replace_mentions(message: str, triggerChar: str = "@", use_label: bool = True):
"""
Replace mentions in the message with either their label (after the pipe `|`)
or their id if no label exists.
Example:
"<@M:gpt-4.1|GPT-4>" -> "GPT-4" (if use_label=True)
"<@M:gpt-4.1|GPT-4>" -> "gpt-4.1" (if use_label=False)
"""
# Escape triggerChar
triggerChar = re.escape(triggerChar)
def replacer(match):
id_type, id_value, label = match.groups()
return label if use_label and label else id_value
# Regex captures: idType, id, optional label
pattern = rf"<{triggerChar}([A-Z]):([^|>]+)(?:\|([^>]+))?>"
return re.sub(pattern, replacer, message)