Merge pull request pypa#11014 from pradyunsg/remove-alternative-progr…

…ess-bars

Co-authored-by: Pradyun Gedam <pradyunsg@users.noreply.github.com>

news/progress.vendor.rst

@@ -0,0 +1 @@
+Remove ``progress`` from vendored dependencies.

src/pip/_internal/cli/cmdoptions.py

@@ -21,7 +21,6 @@
 from pip._vendor.packaging.utils import canonicalize_name
 
 from pip._internal.cli.parser import ConfigOptionParser
-from pip._internal.cli.progress_bars import BAR_TYPES
 from pip._internal.exceptions import CommandError
 from pip._internal.locations import USER_CACHE_DIR, get_src_prefix
 from pip._internal.models.format_control import FormatControl
@@ -236,13 +235,9 @@ class PipOption(Option):
     "--progress-bar",
     dest="progress_bar",
     type="choice",
-    choices=list(BAR_TYPES.keys()),
+    choices=["on", "off"],
     default="on",
-    help=(
-        "Specify type of progress to be displayed ["
-        + "|".join(BAR_TYPES.keys())
-        + "] (default: %default)"
-    ),
+    help="Specify whether the progress bar should be used [on, off] (default: on)",
 )
 
 log: Callable[..., Option] = partial(

src/pip/_internal/cli/progress_bars.py

@@ -1,11 +1,6 @@
 import functools
-import itertools
-import sys
-from signal import SIGINT, default_int_handler, signal
-from typing import Any, Callable, Iterator, Optional, Tuple
+from typing import Callable, Iterator, Optional, Tuple
 
-from pip._vendor.progress.bar import Bar, FillingCirclesBar, IncrementalBar
-from pip._vendor.progress.spinner import Spinner
 from pip._vendor.rich.progress import (
     BarColumn,
     DownloadColumn,
@@ -19,255 +14,11 @@
     TransferSpeedColumn,
 )
 
-from pip._internal.utils.compat import WINDOWS
 from pip._internal.utils.logging import get_indentation
-from pip._internal.utils.misc import format_size
-
-try:
-    from pip._vendor import colorama
-# Lots of different errors can come from this, including SystemError and
-# ImportError.
-except Exception:
-    colorama = None
 
 DownloadProgressRenderer = Callable[[Iterator[bytes]], Iterator[bytes]]
 
 
-def _select_progress_class(preferred: Bar, fallback: Bar) -> Bar:
-    encoding = getattr(preferred.file, "encoding", None)
-
-    # If we don't know what encoding this file is in, then we'll just assume
-    # that it doesn't support unicode and use the ASCII bar.
-    if not encoding:
-        return fallback
-
-    # Collect all of the possible characters we want to use with the preferred
-    # bar.
-    characters = [
-        getattr(preferred, "empty_fill", ""),
-        getattr(preferred, "fill", ""),
-    ]
-    characters += list(getattr(preferred, "phases", []))
-
-    # Try to decode the characters we're using for the bar using the encoding
-    # of the given file, if this works then we'll assume that we can use the
-    # fancier bar and if not we'll fall back to the plaintext bar.
-    try:
-        "".join(characters).encode(encoding)
-    except UnicodeEncodeError:
-        return fallback
-    else:
-        return preferred
-
-
-_BaseBar: Any = _select_progress_class(IncrementalBar, Bar)
-
-
-class InterruptibleMixin:
-    """
-    Helper to ensure that self.finish() gets called on keyboard interrupt.
-
-    This allows downloads to be interrupted without leaving temporary state
-    (like hidden cursors) behind.
-
-    This class is similar to the progress library's existing SigIntMixin
-    helper, but as of version 1.2, that helper has the following problems:
-
-    1. It calls sys.exit().
-    2. It discards the existing SIGINT handler completely.
-    3. It leaves its own handler in place even after an uninterrupted finish,
-       which will have unexpected delayed effects if the user triggers an
-       unrelated keyboard interrupt some time after a progress-displaying
-       download has already completed, for example.
-    """
-
-    def __init__(self, *args: Any, **kwargs: Any) -> None:
-        """
-        Save the original SIGINT handler for later.
-        """
-        # https://github.com/python/mypy/issues/5887
-        super().__init__(*args, **kwargs)
-
-        self.original_handler = signal(SIGINT, self.handle_sigint)
-
-        # If signal() returns None, the previous handler was not installed from
-        # Python, and we cannot restore it. This probably should not happen,
-        # but if it does, we must restore something sensible instead, at least.
-        # The least bad option should be Python's default SIGINT handler, which
-        # just raises KeyboardInterrupt.
-        if self.original_handler is None:
-            self.original_handler = default_int_handler
-
-    def finish(self) -> None:
-        """
-        Restore the original SIGINT handler after finishing.
-
-        This should happen regardless of whether the progress display finishes
-        normally, or gets interrupted.
-        """
-        super().finish()  # type: ignore
-        signal(SIGINT, self.original_handler)
-
-    def handle_sigint(self, signum, frame):  # type: ignore
-        """
-        Call self.finish() before delegating to the original SIGINT handler.
-
-        This handler should only be in place while the progress display is
-        active.
-        """
-        self.finish()
-        self.original_handler(signum, frame)
-
-
-class SilentBar(Bar):
-    def update(self) -> None:
-        pass
-
-
-class BlueEmojiBar(IncrementalBar):
-
-    suffix = "%(percent)d%%"
-    bar_prefix = " "
-    bar_suffix = " "
-    phases = ("\U0001F539", "\U0001F537", "\U0001F535")
-
-
-class DownloadProgressMixin:
-    def __init__(self, *args: Any, **kwargs: Any) -> None:
-        super().__init__(*args, **kwargs)
-        self.message: str = (" " * (get_indentation() + 2)) + self.message
-
-    @property
-    def downloaded(self) -> str:
-        return format_size(self.index)  # type: ignore
-
-    @property
-    def download_speed(self) -> str:
-        # Avoid zero division errors...
-        if self.avg == 0.0:  # type: ignore
-            return "..."
-        return format_size(1 / self.avg) + "/s"  # type: ignore
-
-    @property
-    def pretty_eta(self) -> str:
-        if self.eta:  # type: ignore
-            return f"eta {self.eta_td}"  # type: ignore
-        return ""
-
-    def iter(self, it):  # type: ignore
-        for x in it:
-            yield x
-            # B305 is incorrectly raised here
-            # https://github.com/PyCQA/flake8-bugbear/issues/59
-            self.next(len(x))  # noqa: B305
-        self.finish()
-
-
-class WindowsMixin:
-    def __init__(self, *args: Any, **kwargs: Any) -> None:
-        # The Windows terminal does not support the hide/show cursor ANSI codes
-        # even with colorama. So we'll ensure that hide_cursor is False on
-        # Windows.
-        # This call needs to go before the super() call, so that hide_cursor
-        # is set in time. The base progress bar class writes the "hide cursor"
-        # code to the terminal in its init, so if we don't set this soon
-        # enough, we get a "hide" with no corresponding "show"...
-        if WINDOWS and self.hide_cursor:  # type: ignore
-            self.hide_cursor = False
-
-        super().__init__(*args, **kwargs)
-
-        # Check if we are running on Windows and we have the colorama module,
-        # if we do then wrap our file with it.
-        if WINDOWS and colorama:
-            self.file = colorama.AnsiToWin32(self.file)  # type: ignore
-            # The progress code expects to be able to call self.file.isatty()
-            # but the colorama.AnsiToWin32() object doesn't have that, so we'll
-            # add it.
-            self.file.isatty = lambda: self.file.wrapped.isatty()
-            # The progress code expects to be able to call self.file.flush()
-            # but the colorama.AnsiToWin32() object doesn't have that, so we'll
-            # add it.
-            self.file.flush = lambda: self.file.wrapped.flush()
-
-
-class BaseDownloadProgressBar(WindowsMixin, InterruptibleMixin, DownloadProgressMixin):
-
-    file = sys.stdout
-    message = "%(percent)d%%"
-    suffix = "%(downloaded)s %(download_speed)s %(pretty_eta)s"
-
-
-class DefaultDownloadProgressBar(BaseDownloadProgressBar, _BaseBar):
-    pass
-
-
-class DownloadSilentBar(BaseDownloadProgressBar, SilentBar):
-    pass
-
-
-class DownloadBar(BaseDownloadProgressBar, Bar):
-    pass
-
-
-class DownloadFillingCirclesBar(BaseDownloadProgressBar, FillingCirclesBar):
-    pass
-
-
-class DownloadBlueEmojiProgressBar(BaseDownloadProgressBar, BlueEmojiBar):
-    pass
-
-
-class DownloadProgressSpinner(
-    WindowsMixin, InterruptibleMixin, DownloadProgressMixin, Spinner
-):
-
-    file = sys.stdout
-    suffix = "%(downloaded)s %(download_speed)s"
-
-    def next_phase(self) -> str:
-        if not hasattr(self, "_phaser"):
-            self._phaser = itertools.cycle(self.phases)
-        return next(self._phaser)
-
-    def update(self) -> None:
-        message = self.message % self
-        phase = self.next_phase()
-        suffix = self.suffix % self
-        line = "".join(
-            [
-                message,
-                " " if message else "",
-                phase,
-                " " if suffix else "",
-                suffix,
-            ]
-        )
-
-        self.writeln(line)
-
-
-BAR_TYPES = {
-    "off": (DownloadSilentBar, DownloadSilentBar),
-    "on": (DefaultDownloadProgressBar, DownloadProgressSpinner),
-    "ascii": (DownloadBar, DownloadProgressSpinner),
-    "pretty": (DownloadFillingCirclesBar, DownloadProgressSpinner),
-    "emoji": (DownloadBlueEmojiProgressBar, DownloadProgressSpinner),
-}
-
-
-def _legacy_progress_bar(
-    progress_bar: str, max: Optional[int]
-) -> DownloadProgressRenderer:
-    if max is None or max == 0:
-        return BAR_TYPES[progress_bar][1]().iter  # type: ignore
-    else:
-        return BAR_TYPES[progress_bar][0](max=max).iter
-
-
-#
-# Modern replacement, for our legacy progress bars.
-#
 def _rich_progress_bar(
     iterable: Iterator[bytes],
     *,
@@ -313,7 +64,5 @@ def get_download_progress_renderer(
     """
     if bar_type == "on":
         return functools.partial(_rich_progress_bar, bar_type=bar_type, size=size)
-    elif bar_type == "off":
-        return iter  # no-op, when passed an iterator
     else:
-        return _legacy_progress_bar(bar_type, size)
+        return iter  # no-op, when passed an iterator

src/pip/_internal/cli/req_command.py

@@ -302,13 +302,6 @@ def make_requirement_preparer(
                 gone_in="22.1",
             )
 
-        if options.progress_bar not in {"on", "off"}:
-            deprecated(
-                reason="Custom progress bar styles are deprecated",
-                replacement="to use the default progress bar style.",
-                gone_in="22.1",
-            )
-
         return RequirementPreparer(
             build_dir=temp_build_dir_path,
             src_dir=options.src_dir,

src/pip/_internal/cli/spinners.py

@@ -5,8 +5,6 @@
 import time
 from typing import IO, Iterator
 
-from pip._vendor.progress import HIDE_CURSOR, SHOW_CURSOR
-
 from pip._internal.utils.compat import WINDOWS
 from pip._internal.utils.logging import get_indentation
 
@@ -138,6 +136,10 @@ def open_spinner(message: str) -> Iterator[SpinnerInterface]:
         spinner.finish("done")
 
 
+HIDE_CURSOR = "\x1b[?25l"
+SHOW_CURSOR = "\x1b[?25h"
+
+
 @contextlib.contextmanager
 def hidden_cursor(file: IO[str]) -> Iterator[None]:
     # The Windows terminal does not support the hide/show cursor ANSI codes,