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"""Common regular expressions."""
import re
DISCORD_INVITE = re.compile(
r"(https?://)?(www\.)?" # Optional http(s) and www.
r"("
r"discord([.,]|dot)gg|" # Could be discord.gg
r"discord([.,]|dot)com|" # or discord.com/invite
r"discordapp([.,]|dot)com|" # or discordapp.com/invite
r"discord([.,]|dot)me|" # or discord.me
r"discord([.,]|dot)li|" # or discord.li
r"discord([.,]|dot)io|" # or discord.io
r"((?<!\w)([.,]|dot))gg" # or .gg
r")"
r"((/|slash|\\)(invite))?" # / or \ or 'slash' invite
r"(/|slash|\\)" # / or \ or 'slash'
r"(?P<invite>\S+)", # the invite code itself
flags=re.IGNORECASE
)
"""
Regex for Discord server invites.
.. warning::
This regex pattern will capture until a whitespace, if you are to use the 'invite' capture group in
any HTTP requests or similar. Please ensure you sanitise the output using something
such as :func:`urllib.parse.quote`.
:meta hide-value:
"""
FORMATTED_CODE_REGEX = re.compile(
r"(?P<delim>(?P<block>```)|``?)" # code delimiter: 1-3 backticks; (?P=block) only matches if it's a block
r"(?(block)(?:(?P<lang>[a-z]+)\n)?)" # if we're in a block, match optional language (only letters plus newline)
r"(?:[ \t]*\n)*" # any blank (empty or tabs/spaces only) lines before the code
r"(?P<code>.*?)" # extract all code inside the markup
r"\s*" # any more whitespace before the end of the code markup
r"(?P=delim)", # match the exact same delimiter from the start again
flags=re.DOTALL | re.IGNORECASE # "." also matches newlines, case insensitive
)
"""
Regex for formatted code, using Discord's code blocks.
:meta hide-value:
"""
RAW_CODE_REGEX = re.compile(
r"^(?:[ \t]*\n)*" # any blank (empty or tabs/spaces only) lines before the code
r"(?P<code>.*?)" # extract all the rest as code
r"\s*$", # any trailing whitespace until the end of the string
flags=re.DOTALL # "." also matches newlines
)
"""
Regex for raw code, *not* using Discord's code blocks.
:meta hide-value:
"""
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