diff options
| -rw-r--r-- | bot/exts/utils/snekbox.py | 52 |
1 files changed, 17 insertions, 35 deletions
diff --git a/bot/exts/utils/snekbox.py b/bot/exts/utils/snekbox.py index e782ed745..77830209e 100644 --- a/bot/exts/utils/snekbox.py +++ b/bot/exts/utils/snekbox.py @@ -21,23 +21,12 @@ log = logging.getLogger(__name__) ESCAPE_REGEX = re.compile("[`\u202E\u200B]{3,}") FORMATTED_CODE_REGEX = re.compile( - r"^\s*" # any leading whitespace from the beginning of the string 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 - r"\s*$", # any trailing whitespace until the end of the string - re.DOTALL | re.IGNORECASE # "." also matches newlines, case insensitive -) -CODE_BLOCK_REGEX = re.compile( - r"```" # code block delimiter: 3 batckticks - r"([a-z]+\n)?" # 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"```", # code block end + r"(?P=delim)", # match the exact same delimiter from the start again re.DOTALL | re.IGNORECASE # "." also matches newlines, case insensitive ) RAW_CODE_REGEX = re.compile( @@ -86,32 +75,25 @@ class Snekbox(Cog): @staticmethod def prepare_input(code: str) -> str: """Extract code from the Markdown, format it, and insert it into the code template.""" - match = FORMATTED_CODE_REGEX.fullmatch(code) - - # Despite the wildcard being lazy, the pattern is from start to end and will eat any delimiters in the middle. - if match and match.group("delim") not in match.group("code"): - code, block, lang, delim = match.group("code", "block", "lang", "delim") - code = textwrap.dedent(code) - if block: - info = (f"'{lang}' highlighted" if lang else "plain") + " code block" - else: - info = f"{delim}-enclosed inline code" - log.trace(f"Extracted {info} for evaluation:\n{code}") - - else: - code_parts = CODE_BLOCK_REGEX.finditer(code) - merge = '\n'.join(part.group("code") for part in code_parts) - if merge: - code = textwrap.dedent(merge) - log.trace(f"Merged one or more code blocks from text combined with code:\n{code}") + if match := list(FORMATTED_CODE_REGEX.finditer(code)): + blocks = [block for block in match if block.group("block")] + if len(blocks) > 1: + code = '\n'.join(block.group("code") for block in blocks) + info = "several code blocks" else: - code = textwrap.dedent(RAW_CODE_REGEX.fullmatch(code).group("code")) - log.trace( - f"Eval message contains unformatted or badly formatted code, " - f"stripping whitespace only:\n{code}" - ) + match = match[0] if len(blocks) == 0 else blocks[0] + code, block, lang, delim = match.group("code", "block", "lang", "delim") + if block: + info = (f"'{lang}' highlighted" if lang else "plain") + " code block" + else: + info = f"{delim}-enclosed inline code" + else: + code = RAW_CODE_REGEX.fullmatch(code).group("code") + info = "unformatted or badly formatted code" + code = textwrap.dedent(code) + log.trace(f"Extracted {info} for evaluation:\n{code}") return code @staticmethod |