Telegram Message Copy (TeMeCo)

temeco is a simple Telegram message entities to html translator. Telegram Bot API makes it cumbersome for bots to copy a user's message preserving its entities, since it is currently impossible for a bot to send entities directly along with a message, so it needs to translate a message with entities into HTML or Markdown.

This little package solves this problem and provides a convenient way to translate a message with entities to HTML.

TelegramUTF16Text class is also aware of the fact that Telegram calculates offsets for entities using UTF-16 encoding. This comes into play when text being copied contains symbols which have different lengths in UTF-8 and UTF-16 code units, like emojis.

Installation

pip install temeco

Usage:

from temeco.temeco import BasicEntity, TelegramUTF16Text, HtmlFromMsg

text = (
   "dolorem ipsum, quia dolor sit, 🔥🚒 amet, consectetur, adipisci velit, sed quia 🙃 non numquam eius modi"
   " tempora incidunt, 🙊\nut labore et dolore magnam aliquam quaerat voluptatem."
)
# The offsets correspond to the utf-16 version of the original text,
#   because telegram calculates the offsets in utf-16 code-units

HtmlFromMsg(
   msg_txt=TelegramUTF16Text(text),
   entities=[
       BasicEntity(
           type="bold", offset=8, length=5, msg_text=TelegramUTF16Text(text)
       ),
       BasicEntity(
           type="code", offset=55, length=8, msg_text=TelegramUTF16Text(text)
       ),
       BasicEntity(
           type="text_link",
           offset=64,
           length=5,
           data={"url": "http://google.com/"},
           msg_text=TelegramUTF16Text(text),
       ),
       BasicEntity(
           type="italic",
           offset=153,
           length=7,
           msg_text=TelegramUTF16Text(text),
       ),
   ],
).as_str()

# returns
# 'dolorem <b>ipsum</b>, quia dolor sit, 🔥🚒 amet, consectetur, <code>adipisci</code> <a href="http://google.com/">velit</a>, sed quia 🙃 non numquam eius modi tempora incidunt, 🙊
#  ut labore et dolore magnam <i>aliquam</i> quaerat voluptatem.'

Note:

BasicEntity class supports the following types of entities:

• bold
• italic
• text_link
• code (monospace text)
• pre (preformatted text)

Entities like hashtags and usernames are copied as is, since Telegram recognizes them without extra code.

You may create your own class implementing Entity interface and use it instead of BasicEntity.