diff options
| -rw-r--r-- | bot/exts/utils/snekbox.py | 41 | ||||
| -rw-r--r-- | tests/bot/exts/utils/test_snekbox.py | 7 |
2 files changed, 31 insertions, 17 deletions
diff --git a/bot/exts/utils/snekbox.py b/bot/exts/utils/snekbox.py index 213d57365..41cb00541 100644 --- a/bot/exts/utils/snekbox.py +++ b/bot/exts/utils/snekbox.py @@ -21,14 +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 + 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( @@ -76,23 +74,32 @@ 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) - if match: - 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" + """ + Extract code from the Markdown, format it, and insert it into the code template. + + If there is any code block, ignore text outside the code block. + Use the first code block, but prefer a fenced code block. + If there are several fenced code blocks, concatenate only the fenced code blocks. + """ + 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: - info = f"{delim}-enclosed inline code" - log.trace(f"Extracted {info} for evaluation:\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 = 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}" - ) + 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 diff --git a/tests/bot/exts/utils/test_snekbox.py b/tests/bot/exts/utils/test_snekbox.py index 6601fad2c..9a42d0610 100644 --- a/tests/bot/exts/utils/test_snekbox.py +++ b/tests/bot/exts/utils/test_snekbox.py @@ -52,6 +52,13 @@ class SnekboxTests(unittest.IsolatedAsyncioTestCase): ('`print("Hello world!")`', 'print("Hello world!")', 'one line code block'), ('```\nprint("Hello world!")```', 'print("Hello world!")', 'multiline code block'), ('```py\nprint("Hello world!")```', 'print("Hello world!")', 'multiline python code block'), + ('text```print("Hello world!")```text', 'print("Hello world!")', 'code block surrounded by text'), + ('```print("Hello world!")```\ntext\n```py\nprint("Hello world!")```', + 'print("Hello world!")\nprint("Hello world!")', 'two code blocks with text in-between'), + ('`print("Hello world!")`\ntext\n```print("How\'s it going?")```', + 'print("How\'s it going?")', 'code block preceded by inline code'), + ('`print("Hello world!")`\ntext\n`print("Hello world!")`', + 'print("Hello world!")', 'one inline code block of two') ) for case, expected, testname in cases: with self.subTest(msg=f'Extract code from {testname}.'): |