diff options
Diffstat (limited to '')
| -rw-r--r-- | bot/cogs/moderation/management.py | 2 | ||||
| -rw-r--r-- | bot/pagination.py | 98 | ||||
| -rw-r--r-- | tests/bot/test_pagination.py | 39 |
3 files changed, 117 insertions, 22 deletions
diff --git a/bot/cogs/moderation/management.py b/bot/cogs/moderation/management.py index c39c7f3bc..617d957ed 100644 --- a/bot/cogs/moderation/management.py +++ b/bot/cogs/moderation/management.py @@ -268,12 +268,12 @@ class ModManagement(commands.Cog): User: {self.bot.get_user(user_id)} (`{user_id}`) Type: **{infraction["type"]}** Shadow: {hidden} - Reason: {infraction["reason"] or "*None*"} Created: {created} Expires: {expires} Remaining: {remaining} Actor: {actor.mention if actor else actor_id} ID: `{infraction["id"]}` + Reason: {infraction["reason"] or "*None*"} {"**===============**" if active else "==============="} """) diff --git a/bot/pagination.py b/bot/pagination.py index 2aa3590ba..cd602c715 100644 --- a/bot/pagination.py +++ b/bot/pagination.py @@ -37,12 +37,19 @@ class LinePaginator(Paginator): The suffix appended at the end of every page. e.g. three backticks. * max_size: `int` The maximum amount of codepoints allowed in a page. + * scale_to_size: `int` + The maximum amount of characters a single line can scale up to. * max_lines: `int` The maximum amount of lines allowed in a page. """ def __init__( - self, prefix: str = '```', suffix: str = '```', max_size: int = 2000, max_lines: int = None + self, + prefix: str = '```', + suffix: str = '```', + max_size: int = 2000, + scale_to_size: int = 2000, + max_lines: t.Optional[int] = None ) -> None: """ This function overrides the Paginator.__init__ from inside discord.ext.commands. @@ -52,6 +59,10 @@ class LinePaginator(Paginator): self.prefix = prefix self.suffix = suffix self.max_size = max_size - len(suffix) + if scale_to_size < max_size: + raise ValueError("scale_to_size must be >= max_size.") + + self.scale_to_size = scale_to_size - len(suffix) self.max_lines = max_lines self._current_page = [prefix] self._linecount = 0 @@ -62,23 +73,33 @@ class LinePaginator(Paginator): """ Adds a line to the current page. - If the line exceeds the `self.max_size` then an exception is raised. + If the line exceeds `self.max_size`, then `self.max_size` will go up to `scale_to_size` for + a single line before creating a new page. If it is still exceeded, the excess characters + are stored and placed on the next pages until there are none remaining (by word boundary). + + Raises a RuntimeError if `self.max_size` is still exceeded after attempting to continue + onto the next page. This function overrides the `Paginator.add_line` from inside `discord.ext.commands`. It overrides in order to allow us to configure the maximum number of lines per page. """ - if len(line) > self.max_size - len(self.prefix) - 2: - raise RuntimeError('Line exceeds maximum page size %s' % (self.max_size - len(self.prefix) - 2)) - - if self.max_lines is not None: - if self._linecount >= self.max_lines: - self._linecount = 0 - self.close_page() - - self._linecount += 1 - if self._count + len(line) + 1 > self.max_size: - self.close_page() + remaining_words = None + if len(line) > (max_chars := self.max_size - len(self.prefix) - 2): + if len(line) > self.scale_to_size: + line, remaining_words = self._split_remaining_words(line, max_chars) + if len(line) > self.scale_to_size: + log.debug("Could not continue to next page, truncating line.") + line = line[:self.scale_to_size] + + if self.max_lines is not None and self._linecount >= self.max_lines: + log.debug("max_lines exceeded, creating new page.") + self._new_page() + elif self._count + len(line) + 1 > self.max_size and self._linecount > 0: + log.debug("max_size exceeded on page with lines, creating new page.") + self._new_page() + + self._linecount += 1 self._count += len(line) + 1 self._current_page.append(line) @@ -87,6 +108,53 @@ class LinePaginator(Paginator): self._current_page.append('') self._count += 1 + if remaining_words: + self._new_page() + self.add_line(remaining_words) + + def _new_page(self) -> None: + self._linecount = 0 + self._count = len(self.prefix) + 1 + self.close_page() + + def _split_remaining_words(self, line: str, max_chars: int) -> t.Tuple[str, t.Optional[str]]: + """ + Internal: split a line into two strings -- reduced_words and remaining_words. + + reduced_words: the remaining words in `line`, after attempting to remove all words that + exceed `max_chars` (rounding down to the nearest word boundary). + + remaining_words: the words in `line` which exceed `max_chars`. This value is None if + no words could be split from `line`. + + Return a tuple in the format (reduced_words, remaining_words). + """ + reduced_words = [] + remaining_words = [] + # "(Continued)" is used on a line by itself to indicate the continuation of last page + continuation_header = "(Continued)\n-----------\n" + reduced_char_count = 0 + is_full = False + + for word in line.split(" "): + if not is_full: + if len(word) + reduced_char_count <= max_chars: + reduced_words.append(word) + reduced_char_count += len(word) + 1 + else: + # If reduced_words is empty, we were unable to split the words across pages + if not reduced_words: + return line, None + is_full = True + remaining_words.append(word) + else: + remaining_words.append(word) + + return ( + " ".join(reduced_words), + continuation_header + " ".join(remaining_words) if remaining_words else None + ) + @classmethod async def paginate( cls, @@ -97,6 +165,7 @@ class LinePaginator(Paginator): suffix: str = "", max_lines: t.Optional[int] = None, max_size: int = 500, + scale_to_size: int = 2000, empty: bool = True, restrict_to_user: User = None, timeout: int = 300, @@ -142,7 +211,8 @@ class LinePaginator(Paginator): )) ) - paginator = cls(prefix=prefix, suffix=suffix, max_size=max_size, max_lines=max_lines) + paginator = cls(prefix=prefix, suffix=suffix, max_size=max_size, max_lines=max_lines, + scale_to_size=scale_to_size) current_page = 0 if not lines: diff --git a/tests/bot/test_pagination.py b/tests/bot/test_pagination.py index 0a734b505..ce880d457 100644 --- a/tests/bot/test_pagination.py +++ b/tests/bot/test_pagination.py @@ -8,17 +8,42 @@ class LinePaginatorTests(TestCase): def setUp(self): """Create a paginator for the test method.""" - self.paginator = pagination.LinePaginator(prefix='', suffix='', max_size=30) - - def test_add_line_raises_on_too_long_lines(self): - """`add_line` should raise a `RuntimeError` for too long lines.""" - message = f"Line exceeds maximum page size {self.paginator.max_size - 2}" - with self.assertRaises(RuntimeError, msg=message): - self.paginator.add_line('x' * self.paginator.max_size) + self.paginator = pagination.LinePaginator(prefix='', suffix='', max_size=30, + scale_to_size=50) def test_add_line_works_on_small_lines(self): """`add_line` should allow small lines to be added.""" self.paginator.add_line('x' * (self.paginator.max_size - 3)) + # Note that the page isn't added to _pages until it's full. + self.assertEqual(len(self.paginator._pages), 0) + + def test_add_line_works_on_long_lines(self): + """After additional lines after `max_size` is exceeded should go on the next page.""" + self.paginator.add_line('x' * self.paginator.max_size) + self.assertEqual(len(self.paginator._pages), 0) + + # Any additional lines should start a new page after `max_size` is exceeded. + self.paginator.add_line('x') + self.assertEqual(len(self.paginator._pages), 1) + + def test_add_line_continuation(self): + """When `scale_to_size` is exceeded, remaining words should be split onto the next page.""" + self.paginator.add_line('zyz ' * (self.paginator.scale_to_size//4 + 1)) + self.assertEqual(len(self.paginator._pages), 1) + + def test_add_line_no_continuation(self): + """If adding a new line to an existing page would exceed `max_size`, it should start a new + page rather than using continuation. + """ + self.paginator.add_line('z' * (self.paginator.max_size - 3)) + self.paginator.add_line('z') + self.assertEqual(len(self.paginator._pages), 1) + + def test_add_line_truncates_very_long_words(self): + """`add_line` should truncate if a single long word exceeds `scale_to_size`.""" + self.paginator.add_line('x' * (self.paginator.scale_to_size + 1)) + # Note: item at index 1 is the truncated line, index 0 is prefix + self.assertEqual(self.paginator._current_page[1], 'x' * self.paginator.scale_to_size) class ImagePaginatorTests(TestCase): |