import sys
from optparse import Values
from typing import AbstractSet, List

from pip._internal.cli import cmdoptions
from pip._internal.cli.base_command import Command
from pip._internal.cli.status_codes import SUCCESS
from pip._internal.operations.freeze import freeze
from pip._internal.utils.compat import stdlib_pkgs


def _should_suppress_build_backends() -> bool:
    return sys.version_info < (3, 12)


def _dev_pkgs() -> AbstractSet[str]:
    pkgs = {"pip"}

    if _should_suppress_build_backends():
        pkgs |= {"setuptools", "distribute", "wheel"}

    return pkgs


class FreezeCommand(Command):
    """
    Output installed packages in requirements format.

    packages are listed in a case-insensitive sorted order.
    """

    ignore_require_venv = True
    usage = """
      %prog [options]"""
    log_streams = ("ext://sys.stderr", "ext://sys.stderr")

    def add_options(self) -> None:
        self.cmd_opts.add_option(
            "-r",
            "--requirement",
            dest="requirements",
            action="append",
            default=[],
            metavar="file",
            help=(
                "Use the order in the given requirements file and its "
                "comments when generating output. This option can be "
                "used multiple times."
            ),
        )
        self.cmd_opts.add_option(
            "-l",
            "--local",
            dest="local",
            action="store_true",
            default=False,
            help=(
                "If in a virtualenv that has global access, do not output "
                "globally-installed packages."
            ),
        )
        self.cmd_opts.add_option(
            "--user",
            dest="user",
            action="store_true",
            default=False,
            help="Only output packages installed in user-site.",
        )
        self.cmd_opts.add_option(cmdoptions.list_path())
        self.cmd_opts.add_option(
            "--all",
            dest="freeze_all",
            action="store_true",
            help=(
                "Do not skip these packages in the output:"
                " {}".format(", ".join(_dev_pkgs()))
            ),
        )
        self.cmd_opts.add_option(
            "--exclude-editable",
            dest="exclude_editable",
            action="store_true",
            help="Exclude editable package from output.",
        )
        self.cmd_opts.add_option(cmdoptions.list_exclude())

        self.parser.insert_option_group(0, self.cmd_opts)

    def run(self, options: Values, args: List[str]) -> int:
        skip = set(stdlib_pkgs)
        if not options.freeze_all:
            skip.update(_dev_pkgs())

        if options.excludes:
            skip.update(options.excludes)

        cmdoptions.check_list_path_option(options)

        for line in freeze(
            requirement=options.requirements,
            local_only=options.local,
            user_only=options.user,
            paths=options.path,
            isolated=options.isolated_mode,
            skip=skip,
            exclude_editable=options.exclude_editable,
        ):
            sys.stdout.write(line + "\n")
        return SUCCESS

import sys
from functools import lru_cache
from marshal import dumps, loads
from random import randint
from typing import Any, Dict, Iterable, List, Optional, Type, Union, cast

from . import errors
from .color import Color, ColorParseError, ColorSystem, blend_rgb
from .repr import Result, rich_repr
from .terminal_theme import DEFAULT_TERMINAL_THEME, TerminalTheme

# Style instances and style definitions are often interchangeable
StyleType = Union[str, "Style"]


class _Bit:
    """A descriptor to get/set a style attribute bit."""

    __slots__ = ["bit"]

    def __init__(self, bit_no: int) -> None:
        self.bit = 1 << bit_no

    def __get__(self, obj: "Style", objtype: Type["Style"]) -> Optional[bool]:
        if obj._set_attributes & self.bit:
            return obj._attributes & self.bit != 0
        return None


@rich_repr
class Style:
    """A terminal style.

    A terminal style consists of a color (`color`), a background color (`bgcolor`), and a number of attributes, such
    as bold, italic etc. The attributes have 3 states: they can either be on
    (``True``), off (``False``), or not set (``None``).

    Args:
        color (Union[Color, str], optional): Color of terminal text. Defaults to None.
        bgcolor (Union[Color, str], optional): Color of terminal background. Defaults to None.
        bold (bool, optional): Enable bold text. Defaults to None.
        dim (bool, optional): Enable dim text. Defaults to None.
        italic (bool, optional): Enable italic text. Defaults to None.
        underline (bool, optional): Enable underlined text. Defaults to None.
        blink (bool, optional): Enabled blinking text. Defaults to None.
        blink2 (bool, optional): Enable fast blinking text. Defaults to None.
        reverse (bool, optional): Enabled reverse text. Defaults to None.
        conceal (bool, optional): Enable concealed text. Defaults to None.
        strike (bool, optional): Enable strikethrough text. Defaults to None.
        underline2 (bool, optional): Enable doubly underlined text. Defaults to None.
        frame (bool, optional): Enable framed text. Defaults to None.
        encircle (bool, optional): Enable encircled text. Defaults to None.
        overline (bool, optional): Enable overlined text. Defaults to None.
        link (str, link): Link URL. Defaults to None.

    """

    _color: Optional[Color]
    _bgcolor: Optional[Color]
    _attributes: int
    _set_attributes: int
    _hash: Optional[int]
    _null: bool
    _meta: Optional[bytes]

    __slots__ = [
        "_color",
        "_bgcolor",
        "_attributes",
        "_set_attributes",
        "_link",
        "_link_id",
        "_ansi",
        "_style_definition",
        "_hash",
        "_null",
        "_meta",
    ]

    # maps bits on to SGR parameter
    _style_map = {
        0: "1",
        1: "2",
        2: "3",
        3: "4",
        4: "5",
        5: "6",
        6: "7",
        7: "8",
        8: "9",
        9: "21",
        10: "51",
        11: "52",
        12: "53",
    }

    STYLE_ATTRIBUTES = {
        "dim": "dim",
        "d": "dim",
        "bold": "bold",
        "b": "bold",
        "italic": "italic",
        "i": "italic",
        "underline": "underline",
        "u": "underline",
        "blink": "blink",
        "blink2": "blink2",
        "reverse": "reverse",
        "r": "reverse",
        "conceal": "conceal",
        "c": "conceal",
        "strike": "strike",
        "s": "strike",
        "underline2": "underline2",
        "uu": "underline2",
        "frame": "frame",
        "encircle": "encircle",
        "overline": "overline",
        "o": "overline",
    }

    def __init__(
        self,
        *,
        color: Optional[Union[Color, str]] = None,
        bgcolor: Optional[Union[Color, str]] = None,
        bold: Optional[bool] = None,
        dim: Optional[bool] = None,
        italic: Optional[bool] = None,
        underline: Optional[bool] = None,
        blink: Optional[bool] = None,
        blink2: Optional[bool] = None,
        reverse: Optional[bool] = None,
        conceal: Optional[bool] = None,
        strike: Optional[bool] = None,
        underline2: Optional[bool] = None,
        frame: Optional[bool] = None,
        encircle: Optional[bool] = None,
        overline: Optional[bool] = None,
        link: Optional[str] = None,
        meta: Optional[Dict[str, Any]] = None,
    ):
        self._ansi: Optional[str] = None
        self._style_definition: Optional[str] = None

        def _make_color(color: Union[Color, str]) -> Color:
            return color if isinstance(color, Color) else Color.parse(color)

        self._color = None if color is None else _make_color(color)
        self._bgcolor = None if bgcolor is None else _make_color(bgcolor)
        self._set_attributes = sum(
            (
                bold is not None,
                dim is not None and 2,
                italic is not None and 4,
                underline is not None and 8,
                blink is not None and 16,
                blink2 is not None and 32,
                reverse is not None and 64,
                conceal is not None and 128,
                strike is not None and 256,
                underline2 is not None and 512,
                frame is not None and 1024,
                encircle is not None and 2048,
                overline is not None and 4096,
            )
        )
        self._attributes = (
            sum(
                (
                    bold and 1 or 0,
                    dim and 2 or 0,
                    italic and 4 or 0,
                    underline and 8 or 0,
                    blink and 16 or 0,
                    blink2 and 32 or 0,
                    reverse and 64 or 0,
                    conceal and 128 or 0,
                    strike and 256 or 0,
                    underline2 and 512 or 0,
                    frame and 1024 or 0,
                    encircle and 2048 or 0,
                    overline and 4096 or 0,
                )
            )
            if self._set_attributes
            else 0
        )

        self._link = link
        self._meta = None if meta is None else dumps(meta)
        self._link_id = (
            f"{randint(0, 999999)}{hash(self._meta)}" if (link or meta) else ""
        )
        self._hash: Optional[int] = None
        self._null = not (self._set_attributes or color or bgcolor or link or meta)

    @classmethod
    def null(cls) -> "Style":
        """Create an 'null' style, equivalent to Style(), but more performant."""
        return NULL_STYLE

    @classmethod
    def from_color(
        cls, color: Optional[Color] = None, bgcolor: Optional[Color] = None
    ) -> "Style":
        """Create a new style with colors and no attributes.

        Returns:
            color (Optional[Color]): A (foreground) color, or None for no color. Defaults to None.
            bgcolor (Optional[Color]): A (background) color, or None for no color. Defaults to None.
        """
        style: Style = cls.__new__(Style)
        style._ansi = None
        style._style_definition = None
        style._color = color
        style._bgcolor = bgcolor
        style._set_attributes = 0
        style._attributes = 0
        style._link = None
        style._link_id = ""
        style._meta = None
        style._null = not (color or bgcolor)
        style._hash = None
        return style

    @classmethod
    def from_meta(cls, meta: Optional[Dict[str, Any]]) -> "Style":
        """Create a new style with meta data.

        Returns:
            meta (Optional[Dict[str, Any]]): A dictionary of meta data. Defaults to None.
        """
        style: Style = cls.__new__(Style)
        style._ansi = None
        style._style_definition = None
        style._color = None
        style._bgcolor = None
        style._set_attributes = 0
        style._attributes = 0
        style._link = None
        style._meta = dumps(meta)
        style._link_id = f"{randint(0, 999999)}{hash(style._meta)}"
        style._hash = None
        style._null = not (meta)
        return style

    @classmethod
    def on(cls, meta: Optional[Dict[str, Any]] = None, **handlers: Any) -> "Style":
        """Create a blank style with meta information.

        Example:
            style = Style.on(click=self.on_click)

        Args:
            meta (Optional[Dict[str, Any]], optional): An optional dict of meta information.
            **handlers (Any): Keyword arguments are translated in to handlers.

        Returns:
            Style: A Style with meta information attached.
        """
        meta = {} if meta is None else meta
        meta.update({f"@{key}": value for key, value in handlers.items()})
        return cls.from_meta(meta)

    bold = _Bit(0)
    dim = _Bit(1)
    italic = _Bit(2)
    underline = _Bit(3)
    blink = _Bit(4)
    blink2 = _Bit(5)
    reverse = _Bit(6)
    conceal = _Bit(7)
    strike = _Bit(8)
    underline2 = _Bit(9)
    frame = _Bit(10)
    encircle = _Bit(11)
    overline = _Bit(12)

    @property
    def link_id(self) -> str:
        """Get a link id, used in ansi code for links."""
        return self._link_id

    def __str__(self) -> str:
        """Re-generate style definition from attributes."""
        if self._style_definition is None:
            attributes: List[str] = []
            append = attributes.append
            bits = self._set_attributes
            if bits & 0b0000000001111:
                if bits & 1:
                    append("bold" if self.bold else "not bold")
                if bits & (1 << 1):
                    append("dim" if self.dim else "not dim")
                if bits & (1 << 2):
                    append("italic" if self.italic else "not italic")
                if bits & (1 << 3):
                    append("underline" if self.underline else "not underline")
            if bits & 0b0000111110000:
                if bits & (1 << 4):
                    append("blink" if self.blink else "not blink")
                if bits & (1 << 5):
                    append("blink2" if self.blink2 else "not blink2")
                if bits & (1 << 6):
                    append("reverse" if self.reverse else "not reverse")
                if bits & (1 << 7):
                    append("conceal" if self.conceal else "not conceal")
                if bits & (1 << 8):
                    append("strike" if self.strike else "not strike")
            if bits & 0b1111000000000:
                if bits & (1 << 9):
                    append("underline2" if self.underline2 else "not underline2")
                if bits & (1 << 10):
                    append("frame" if self.frame else "not frame")
                if bits & (1 << 11):
                    append("encircle" if self.encircle else "not encircle")
                if bits & (1 << 12):
                    append("overline" if self.overline else "not overline")
            if self._color is not None:
                append(self._color.name)
            if self._bgcolor is not None:
                append("on")
                append(self._bgcolor.name)
            if self._link:
                append("link")
                append(self._link)
            self._style_definition = " ".join(attributes) or "none"
        return self._style_definition

    def __bool__(self) -> bool:
        """A Style is false if it has no attributes, colors, or links."""
        return not self._null

    def _make_ansi_codes(self, color_system: ColorSystem) -> str:
        """Generate ANSI codes for this style.

        Args:
            color_system (ColorSystem): Color system.

        Returns:
            str: String containing codes.
        """

        if self._ansi is None:
            sgr: List[str] = []
            append = sgr.append
            _style_map = self._style_map
            attributes = self._attributes & self._set_attributes
            if attributes:
                if attributes & 1:
                    append(_style_map[0])
                if attributes & 2:
                    append(_style_map[1])
                if attributes & 4:
                    append(_style_map[2])
                if attributes & 8:
                    append(_style_map[3])
                if attributes & 0b0000111110000:
                    for bit in range(4, 9):
                        if attributes & (1 << bit):
                            append(_style_map[bit])
                if attributes & 0b1111000000000:
                    for bit in range(9, 13):
                        if attributes & (1 << bit):
                            append(_style_map[bit])
            if self._color is not None:
                sgr.extend(self._color.downgrade(color_system).get_ansi_codes())
            if self._bgcolor is not None:
                sgr.extend(
                    self._bgcolor.downgrade(color_system).get_ansi_codes(
                        foreground=False
                    )
                )
            self._ansi = ";".join(sgr)
        return self._ansi

    @classmethod
    @lru_cache(maxsize=1024)
    def normalize(cls, style: str) -> str:
        """Normalize a style definition so that styles with the same effect have the same string
        representation.

        Args:
            style (str): A style definition.

        Returns:
            str: Normal form of style definition.
        """
        try:
            return str(cls.parse(style))
        except errors.StyleSyntaxError:
            return style.strip().lower()

    @classmethod
    def pick_first(cls, *values: Optional[StyleType]) -> StyleType:
        """Pick first non-None style."""
        for value in values:
            if value is not None:
                return value
        raise ValueError("expected at least one non-None style")

    def __rich_repr__(self) -> Result:
        yield "color", self.color, None
        yield "bgcolor", self.bgcolor, None
        yield "bold", self.bold, None,
        yield "dim", self.dim, None,
        yield "italic", self.italic, None
        yield "underline", self.underline, None,
        yield "blink", self.blink, None
        yield "blink2", self.blink2, None
        yield "reverse", self.reverse, None
        yield "conceal", self.conceal, None
        yield "strike", self.strike, None
        yield "underline2", self.underline2, None
        yield "frame", self.frame, None
        yield "encircle", self.encircle, None
        yield "link", self.link, None
        if self._meta:
            yield "meta", self.meta

    def __eq__(self, other: Any) -> bool:
        if not isinstance(other, Style):
            return NotImplemented
        return self.__hash__() == other.__hash__()

    def __ne__(self, other: Any) -> bool:
        if not isinstance(other, Style):
            return NotImplemented
        return self.__hash__() != other.__hash__()

    def __hash__(self) -> int:
        if self._hash is not None:
            return self._hash
        self._hash = hash(
            (
                self._color,
                self._bgcolor,
                self._attributes,
                self._set_attributes,
                self._link,
                self._meta,
            )
        )
        return self._hash

    @property
    def color(self) -> Optional[Color]:
        """The foreground color or None if it is not set."""
        return self._color

    @property
    def bgcolor(self) -> Optional[Color]:
        """The background color or None if it is not set."""
        return self._bgcolor

    @property
    def link(self) -> Optional[str]:
        """Link text, if set."""
        return self._link

    @property
    def transparent_background(self) -> bool:
        """Check if the style specified a transparent background."""
        return self.bgcolor is None or self.bgcolor.is_default

    @property
    def background_style(self) -> "Style":
        """A Style with background only."""
        return Style(bgcolor=self.bgcolor)

    @property
    def meta(self) -> Dict[str, Any]:
        """Get meta information (can not be changed after construction)."""
        return {} if self._meta is None else cast(Dict[str, Any], loads(self._meta))

    @property
    def without_color(self) -> "Style":
        """Get a copy of the style with color removed."""
        if self._null:
            return NULL_STYLE
        style: Style = self.__new__(Style)
        style._ansi = None
        style._style_definition = None
        style._color = None
        style._bgcolor = None
        style._attributes = self._attributes
        style._set_attributes = self._set_attributes
        style._link = self._link
        style._link_id = f"{randint(0, 999999)}" if self._link else ""
        style._null = False
        style._meta = None
        style._hash = None
        return style

    @classmethod
    @lru_cache(maxsize=4096)
    def parse(cls, style_definition: str) -> "Style":
        """Parse a style definition.

        Args:
            style_definition (str): A string containing a style.

        Raises:
            errors.StyleSyntaxError: If the style definition syntax is invalid.

        Returns:
            `Style`: A Style instance.
        """
        if style_definition.strip() == "none" or not style_definition:
            return cls.null()

        STYLE_ATTRIBUTES = cls.STYLE_ATTRIBUTES
        color: Optional[str] = None
        bgcolor: Optional[str] = None
        attributes: Dict[str, Optional[Any]] = {}
        link: Optional[str] = None

        words = iter(style_definition.split())
        for original_word in words:
            word = original_word.lower()
            if word == "on":
                word = next(words, "")
                if not word:
                    raise errors.StyleSyntaxError("color expected after 'on'")
                try:
                    Color.parse(word) is None
                except ColorParseError as error:
                    raise errors.StyleSyntaxError(
                        f"unable to parse {word!r} as background color; {error}"
                    ) from None
                bgcolor = word

            elif word == "not":
                word = next(words, "")
                attribute = STYLE_ATTRIBUTES.get(word)
                if attribute is None:
                    raise errors.StyleSyntaxError(
                        f"expected style attribute after 'not', found {word!r}"
                    )
                attributes[attribute] = False

            elif word == "link":
                word = next(words, "")
                if not word:
                    raise errors.StyleSyntaxError("URL expected after 'link'")
                link = word

            elif word in STYLE_ATTRIBUTES:
                attributes[STYLE_ATTRIBUTES[word]] = True

            else:
                try:
                    Color.parse(word)
                except ColorParseError as error:
                    raise errors.StyleSyntaxError(
                        f"unable to parse {word!r} as color; {error}"
                    ) from None
                color = word
        style = Style(color=color, bgcolor=bgcolor, link=link, **attributes)
        return style

    @lru_cache(maxsize=1024)
    def get_html_style(self, theme: Optional[TerminalTheme] = None) -> str:
        """Get a CSS style rule."""
        theme = theme or DEFAULT_TERMINAL_THEME
        css: List[str] = []
        append = css.append

        color = self.color
        bgcolor = self.bgcolor
        if self.reverse:
            color, bgcolor = bgcolor, color
        if self.dim:
            foreground_color = (
                theme.foreground_color if color is None else color.get_truecolor(theme)
            )
            color = Color.from_triplet(
                blend_rgb(foreground_color, theme.background_color, 0.5)
            )
        if color is not None:
            theme_color = color.get_truecolor(theme)
            append(f"color: {theme_color.hex}")
            append(f"text-decoration-color: {theme_color.hex}")
        if bgcolor is not None:
            theme_color = bgcolor.get_truecolor(theme, foreground=False)
            append(f"background-color: {theme_color.hex}")
        if self.bold:
            append("font-weight: bold")
        if self.italic:
            append("font-style: italic")
        if self.underline:
            append("text-decoration: underline")
        if self.strike:
            append("text-decoration: line-through")
        if self.overline:
            append("text-decoration: overline")
        return "; ".join(css)

    @classmethod
    def combine(cls, styles: Iterable["Style"]) -> "Style":
        """Combine styles and get result.

        Args:
            styles (Iterable[Style]): Styles to combine.

        Returns:
            Style: A new style instance.
        """
        iter_styles = iter(styles)
        return sum(iter_styles, next(iter_styles))

    @classmethod
    def chain(cls, *styles: "Style") -> "Style":
        """Combine styles from positional argument in to a single style.

        Args:
            *styles (Iterable[Style]): Styles to combine.

        Returns:
            Style: A new style instance.
        """
        iter_styles = iter(styles)
        return sum(iter_styles, next(iter_styles))

    def copy(self) -> "Style":
        """Get a copy of this style.

        Returns:
            Style: A new Style instance with identical attributes.
        """
        if self._null:
            return NULL_STYLE
        style: Style = self.__new__(Style)
        style._ansi = self._ansi
        style._style_definition = self._style_definition
        style._color = self._color
        style._bgcolor = self._bgcolor
        style._attributes = self._attributes
        style._set_attributes = self._set_attributes
        style._link = self._link
        style._link_id = f"{randint(0, 999999)}" if self._link else ""
        style._hash = self._hash
        style._null = False
        style._meta = self._meta
        return style

    @lru_cache(maxsize=128)
    def clear_meta_and_links(self) -> "Style":
        """Get a copy of this style with link and meta information removed.

        Returns:
            Style: New style object.
        """
        if self._null:
            return NULL_STYLE
        style: Style = self.__new__(Style)
        style._ansi = self._ansi
        style._style_definition = self._style_definition
        style._color = self._color
        style._bgcolor = self._bgcolor
        style._attributes = self._attributes
        style._set_attributes = self._set_attributes
        style._link = None
        style._link_id = ""
        style._hash = self._hash
        style._null = False
        style._meta = None
        return style

    def update_link(self, link: Optional[str] = None) -> "Style":
        """Get a copy with a different value for link.

        Args:
            link (str, optional): New value for link. Defaults to None.

        Returns:
            Style: A new Style instance.
        """
        style: Style = self.__new__(Style)
        style._ansi = self._ansi
        style._style_definition = self._style_definition
        style._color = self._color
        style._bgcolor = self._bgcolor
        style._attributes = self._attributes
        style._set_attributes = self._set_attributes
        style._link = link
        style._link_id = f"{randint(0, 999999)}" if link else ""
        style._hash = None
        style._null = False
        style._meta = self._meta
        return style

    def render(
        self,
        text: str = "",
        *,
        color_system: Optional[ColorSystem] = ColorSystem.TRUECOLOR,
        legacy_windows: bool = False,
    ) -> str:
        """Render the ANSI codes for the style.

        Args:
            text (str, optional): A string to style. Defaults to "".
            color_system (Optional[ColorSystem], optional): Color system to render to. Defaults to ColorSystem.TRUECOLOR.

        Returns:
            str: A string containing ANSI style codes.
        """
        if not text or color_system is None:
            return text
        attrs = self._ansi or self._make_ansi_codes(color_system)
        rendered = f"\x1b[{attrs}m{text}\x1b[0m" if attrs else text
        if self._link and not legacy_windows:
            rendered = (
                f"\x1b]8;id={self._link_id};{self._link}\x1b\\{rendered}\x1b]8;;\x1b\\"
            )
        return rendered

    def test(self, text: Optional[str] = None) -> None:
        """Write text with style directly to terminal.

        This method is for testing purposes only.

        Args:
            text (Optional[str], optional): Text to style or None for style name.

        """
        text = text or str(self)
        sys.stdout.write(f"{self.render(text)}\n")

    @lru_cache(maxsize=1024)
    def _add(self, style: Optional["Style"]) -> "Style":
        if style is None or style._null:
            return self
        if self._null:
            return style
        new_style: Style = self.__new__(Style)
        new_style._ansi = None
        new_style._style_definition = None
        new_style._color = style._color or self._color
        new_style._bgcolor = style._bgcolor or self._bgcolor
        new_style._attributes = (self._attributes & ~style._set_attributes) | (
            style._attributes & style._set_attributes
        )
        new_style._set_attributes = self._set_attributes | style._set_attributes
        new_style._link = style._link or self._link
        new_style._link_id = style._link_id or self._link_id
        new_style._null = style._null
        if self._meta and style._meta:
            new_style._meta = dumps({**self.meta, **style.meta})
        else:
            new_style._meta = self._meta or style._meta
        new_style._hash = None
        return new_style

    def __add__(self, style: Optional["Style"]) -> "Style":
        combined_style = self._add(style)
        return combined_style.copy() if combined_style.link else combined_style


NULL_STYLE = Style()


class StyleStack:
    """A stack of styles."""

    __slots__ = ["_stack"]

    def __init__(self, default_style: "Style") -> None:
        self._stack: List[Style] = [default_style]

    def __repr__(self) -> str:
        return f"<stylestack {self._stack!r}>"

    @property
    def current(self) -> Style:
        """Get the Style at the top of the stack."""
        return self._stack[-1]

    def push(self, style: Style) -> None:
        """Push a new style on to the stack.

        Args:
            style (Style): New style to combine with current style.
        """
        self._stack.append(self._stack[-1] + style)

    def pop(self) -> Style:
        """Pop last style and discard.

        Returns:
            Style: New current style (also available as stack.current)
        """
        self._stack.pop()
        return self._stack[-1]

"""
    pygments.formatters.pangomarkup
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    Formatter for Pango markup output.

    :copyright: Copyright 2006-2024 by the Pygments team, see AUTHORS.
    :license: BSD, see LICENSE for details.
"""

from pip._vendor.pygments.formatter import Formatter


__all__ = ['PangoMarkupFormatter']


_escape_table = {
    ord('&'): '&',
    ord('<'): '&lt;',
}


def escape_special_chars(text, table=_escape_table):
    """Escape & and < for Pango Markup."""
    return text.translate(table)


class PangoMarkupFormatter(Formatter):
    """
    Format tokens as Pango Markup code. It can then be rendered to an SVG.

    .. versionadded:: 2.9
    """

    name = 'Pango Markup'
    aliases = ['pango', 'pangomarkup']
    filenames = []

    def __init__(self, **options):
        Formatter.__init__(self, **options)

        self.styles = {}

        for token, style in self.style:
            start = ''
            end = ''
            if style['color']:
                start += '<span fgcolor="#{}">'.format(style['color'])
                end = '</span>' + end
            if style['bold']:
                start += '<b>'
                end = '</b>' + end
            if style['italic']:
                start += '<i>'
                end = '</i>' + end
            if style['underline']:
                start += '<u>'
                end = '</u>' + end
            self.styles[token] = (start, end)

    def format_unencoded(self, tokensource, outfile):
        lastval = ''
        lasttype = None

        outfile.write('<tt>')

        for ttype, value in tokensource:
            while ttype not in self.styles:
                ttype = ttype.parent
            if ttype == lasttype:
                lastval += escape_special_chars(value)
            else:
                if lastval:
                    stylebegin, styleend = self.styles[lasttype]
                    outfile.write(stylebegin + lastval + styleend)
                lastval = escape_special_chars(value)
                lasttype = ttype

        if lastval:
            stylebegin, styleend = self.styles[lasttype]
            outfile.write(stylebegin + lastval + styleend)

        outfile.write('</tt>')

import logging
import os
import shutil
from optparse import Values
from typing import List

from pip._internal.cache import WheelCache
from pip._internal.cli import cmdoptions
from pip._internal.cli.req_command import RequirementCommand, with_cleanup
from pip._internal.cli.status_codes import SUCCESS
from pip._internal.exceptions import CommandError
from pip._internal.operations.build.build_tracker import get_build_tracker
from pip._internal.req.req_install import (
    InstallRequirement,
    check_legacy_setup_py_options,
)
from pip._internal.utils.misc import ensure_dir, normalize_path
from pip._internal.utils.temp_dir import TempDirectory
from pip._internal.wheel_builder import build, should_build_for_wheel_command

logger = logging.getLogger(__name__)


class WheelCommand(RequirementCommand):
    """
    Build Wheel archives for your requirements and dependencies.

    Wheel is a built-package format, and offers the advantage of not
    recompiling your software during every install. For more details, see the
    wheel docs: https://wheel.readthedocs.io/en/latest/

    'pip wheel' uses the build system interface as described here:
    https://pip.pypa.io/en/stable/reference/build-system/

    """

    usage = """
      %prog [options] <requirement specifier> ...
      %prog [options] -r <requirements file> ...
      %prog [options] [-e] <vcs project url> ...
      %prog [options] [-e] <local project path> ...
      %prog [options] <archive url/path> ..."""

    def add_options(self) -> None:
        self.cmd_opts.add_option(
            "-w",
            "--wheel-dir",
            dest="wheel_dir",
            metavar="dir",
            default=os.curdir,
            help=(
                "Build wheels into <dir>, where the default is the "
                "current working directory."
            ),
        )
        self.cmd_opts.add_option(cmdoptions.no_binary())
        self.cmd_opts.add_option(cmdoptions.only_binary())
        self.cmd_opts.add_option(cmdoptions.prefer_binary())
        self.cmd_opts.add_option(cmdoptions.no_build_isolation())
        self.cmd_opts.add_option(cmdoptions.use_pep517())
        self.cmd_opts.add_option(cmdoptions.no_use_pep517())
        self.cmd_opts.add_option(cmdoptions.check_build_deps())
        self.cmd_opts.add_option(cmdoptions.constraints())
        self.cmd_opts.add_option(cmdoptions.editable())
        self.cmd_opts.add_option(cmdoptions.requirements())
        self.cmd_opts.add_option(cmdoptions.src())
        self.cmd_opts.add_option(cmdoptions.ignore_requires_python())
        self.cmd_opts.add_option(cmdoptions.no_deps())
        self.cmd_opts.add_option(cmdoptions.progress_bar())

        self.cmd_opts.add_option(
            "--no-verify",
            dest="no_verify",
            action="store_true",
            default=False,
            help="Don't verify if built wheel is valid.",
        )

        self.cmd_opts.add_option(cmdoptions.config_settings())
        self.cmd_opts.add_option(cmdoptions.build_options())
        self.cmd_opts.add_option(cmdoptions.global_options())

        self.cmd_opts.add_option(
            "--pre",
            action="store_true",
            default=False,
            help=(
                "Include pre-release and development versions. By default, "
                "pip only finds stable versions."
            ),
        )

        self.cmd_opts.add_option(cmdoptions.require_hashes())

        index_opts = cmdoptions.make_option_group(
            cmdoptions.index_group,
            self.parser,
        )

        self.parser.insert_option_group(0, index_opts)
        self.parser.insert_option_group(0, self.cmd_opts)

    @with_cleanup
    def run(self, options: Values, args: List[str]) -> int:
        session = self.get_default_session(options)

        finder = self._build_package_finder(options, session)

        options.wheel_dir = normalize_path(options.wheel_dir)
        ensure_dir(options.wheel_dir)

        build_tracker = self.enter_context(get_build_tracker())

        directory = TempDirectory(
            delete=not options.no_clean,
            kind="wheel",
            globally_managed=True,
        )

        reqs = self.get_requirements(args, options, finder, session)
        check_legacy_setup_py_options(options, reqs)

        wheel_cache = WheelCache(options.cache_dir)

        preparer = self.make_requirement_preparer(
            temp_build_dir=directory,
            options=options,
            build_tracker=build_tracker,
            session=session,
            finder=finder,
            download_dir=options.wheel_dir,
            use_user_site=False,
            verbosity=self.verbosity,
        )

        resolver = self.make_resolver(
            preparer=preparer,
            finder=finder,
            options=options,
            wheel_cache=wheel_cache,
            ignore_requires_python=options.ignore_requires_python,
            use_pep517=options.use_pep517,
        )

        self.trace_basic_info(finder)

        requirement_set = resolver.resolve(reqs, check_supported_wheels=True)

        reqs_to_build: List[InstallRequirement] = []
        for req in requirement_set.requirements.values():
            if req.is_wheel:
                preparer.save_linked_requirement(req)
            elif should_build_for_wheel_command(req):
                reqs_to_build.append(req)

        preparer.prepare_linked_requirements_more(requirement_set.requirements.values())

        # build wheels
        build_successes, build_failures = build(
            reqs_to_build,
            wheel_cache=wheel_cache,
            verify=(not options.no_verify),
            build_options=options.build_options or [],
            global_options=options.global_options or [],
        )
        for req in build_successes:
            assert req.link and req.link.is_wheel
            assert req.local_file_path
            # copy from cache to target directory
            try:
                shutil.copy(req.local_file_path, options.wheel_dir)
            except OSError as e:
                logger.warning(
                    "Building wheel for %s failed: %s",
                    req.name,
                    e,
                )
                build_failures.append(req)
        if len(build_failures) != 0:
            raise CommandError("Failed to build one or more wheels")

        return SUCCESS