Initial commit: 首次建仓，建立目录结构

dashboard/venv/lib/python3.12/site-packages/click/_textwrap.py

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+from __future__ import annotations
+
+import collections.abc as cabc
+import textwrap
+from contextlib import contextmanager
+
+from ._compat import _ansi_re
+from ._compat import term_len
+
+
+def _truncate_visible(text: str, n: int) -> str:
+    """Return the longest prefix of ``text`` containing at most ``n`` visible
+    characters.
+
+    ANSI escape sequences inside the prefix are kept intact and do not count
+    toward the visible width. A cut is never placed inside an escape sequence.
+    """
+    if n <= 0:
+        return ""
+
+    visible = 0
+    i = 0
+    cut = 0
+    end = len(text)
+    while i < end:
+        m = _ansi_re.match(text, i)
+        if m is not None:
+            i = m.end()
+            continue
+        visible += 1
+        i += 1
+        cut = i
+        if visible >= n:
+            break
+    return text[:cut]
+
+
+class TextWrapper(textwrap.TextWrapper):
+    """``textwrap.TextWrapper`` variant that measures widths by visible
+    character count.
+
+    ANSI escape sequences embedded in chunks, indents, or the placeholder are
+    excluded from the width budget. Without this, styled help text (a styled
+    ``Usage:`` prefix, a colorized option name, ...) would be wrapped earlier
+    than its visible length warrants and tokens would split mid-word.
+    """
+
+    def _handle_long_word(
+        self,
+        reversed_chunks: list[str],
+        cur_line: list[str],
+        cur_len: int,
+        width: int,
+    ) -> None:
+        space_left = max(width - cur_len, 1)
+
+        if self.break_long_words:
+            last = reversed_chunks[-1]
+            cut = _truncate_visible(last, space_left)
+            res = last[len(cut) :]
+            cur_line.append(cut)
+            reversed_chunks[-1] = res
+        elif not cur_line:
+            cur_line.append(reversed_chunks.pop())
+
+    def _wrap_chunks(self, chunks: list[str]) -> list[str]:
+        """Wrap chunks counting widths in visible characters.
+
+        Mirrors the algorithm of :meth:`textwrap.TextWrapper._wrap_chunks`
+        with every width measurement routed through
+        :func:`click._compat.term_len` instead of :func:`len`, so ANSI escape
+        bytes in chunks, indents, or the placeholder do not inflate the count.
+
+        .. seealso::
+            :class:`textwrap.TextWrapper` in the Python standard library documentation:
+            https://docs.python.org/3/library/textwrap.html#textwrap.TextWrapper
+
+            Reference implementation in CPython:
+            https://github.com/python/cpython/blob/main/Lib/textwrap.py
+        """
+        lines: list[str] = []
+        if self.width <= 0:
+            raise ValueError(f"invalid width {self.width!r} (must be > 0)")
+        if self.max_lines is not None:
+            if self.max_lines > 1:
+                indent = self.subsequent_indent
+            else:
+                indent = self.initial_indent
+            if term_len(indent) + term_len(self.placeholder.lstrip()) > self.width:
+                raise ValueError("placeholder too large for max width")
+
+        chunks.reverse()
+
+        while chunks:
+            cur_line: list[str] = []
+            cur_len = 0
+
+            if lines:
+                indent = self.subsequent_indent
+            else:
+                indent = self.initial_indent
+
+            width = self.width - term_len(indent)
+
+            if self.drop_whitespace and chunks[-1].strip() == "" and lines:
+                del chunks[-1]
+
+            while chunks:
+                n = term_len(chunks[-1])
+
+                if cur_len + n <= width:
+                    cur_line.append(chunks.pop())
+                    cur_len += n
+
+                else:
+                    break
+
+            if chunks and term_len(chunks[-1]) > width:
+                self._handle_long_word(chunks, cur_line, cur_len, width)
+                cur_len = sum(map(term_len, cur_line))
+
+            if self.drop_whitespace and cur_line and cur_line[-1].strip() == "":
+                cur_len -= term_len(cur_line[-1])
+                del cur_line[-1]
+
+            if cur_line:
+                if (
+                    self.max_lines is None
+                    or len(lines) + 1 < self.max_lines
+                    or (
+                        not chunks
+                        or self.drop_whitespace
+                        and len(chunks) == 1
+                        and not chunks[0].strip()
+                    )
+                    and cur_len <= width
+                ):
+                    lines.append(indent + "".join(cur_line))
+                else:
+                    while cur_line:
+                        if (
+                            cur_line[-1].strip()
+                            and cur_len + term_len(self.placeholder) <= width
+                        ):
+                            cur_line.append(self.placeholder)
+                            lines.append(indent + "".join(cur_line))
+                            break
+                        cur_len -= term_len(cur_line[-1])
+                        del cur_line[-1]
+                    else:
+                        if lines:
+                            prev_line = lines[-1].rstrip()
+                            if (
+                                term_len(prev_line) + term_len(self.placeholder)
+                                <= self.width
+                            ):
+                                lines[-1] = prev_line + self.placeholder
+                                break
+                        lines.append(indent + self.placeholder.lstrip())
+                    break
+
+        return lines
+
+    @contextmanager
+    def extra_indent(self, indent: str) -> cabc.Iterator[None]:
+        old_initial_indent = self.initial_indent
+        old_subsequent_indent = self.subsequent_indent
+        self.initial_indent += indent
+        self.subsequent_indent += indent
+
+        try:
+            yield
+        finally:
+            self.initial_indent = old_initial_indent
+            self.subsequent_indent = old_subsequent_indent
+
+    def indent_only(self, text: str) -> str:
+        rv = []
+
+        for idx, line in enumerate(text.splitlines()):
+            indent = self.initial_indent
+
+            if idx > 0:
+                indent = self.subsequent_indent
+
+            rv.append(f"{indent}{line}")
+
+        return "\n".join(rv)