zulip/zerver/lib/emoji_utils.py

26 lines
1.1 KiB
Python

# This file doesn't import from django so that we can use it in `build_emoji`
def unqualify_emoji(emoji: str) -> str:
# Starting from version 4.0.0, `emoji_datasource` package has started to
# add an emoji presentation variation selector for certain emojis which
# have defined variation sequences. The emoji presentation selector
# "qualifies" an emoji, and an "unqualified" version of an emoji does
# not have an emoji presentation selector.
#
# Since in informal environments(like texting and chat), it is more
# appropriate for an emoji to have a colorful display so until emoji
# characters have a text presentation selector, it should have a
# colorful display. Hence we can continue using emoji characters
# without appending emoji presentation selector.
# (http://unicode.org/reports/tr51/index.html#Presentation_Style)
return emoji.replace("\ufe0f", "")
def emoji_to_hex_codepoint(emoji: str) -> str:
return "-".join(f"{ord(c):04x}" for c in emoji)
def hex_codepoint_to_emoji(hex: str) -> str:
return "".join(chr(int(h, 16)) for h in hex.split("-"))