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Viewing / Editing File: _windows_renderer.py

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from typing import Iterable, Sequence, Tuple, cast

from pip._vendor.rich._win32_console import LegacyWindowsTerm, WindowsCoordinates
from pip._vendor.rich.segment import ControlCode, ControlType, Segment


def legacy_windows_render(buffer: Iterable[Segment], term: LegacyWindowsTerm) -> None:
    """Makes appropriate Windows Console API calls based on the segments in the buffer.

    Args:
        buffer (Iterable[Segment]): Iterable of Segments to convert to Win32 API calls.
        term (LegacyWindowsTerm): Used to call the Windows Console API.
    """
    for text, style, control in buffer:
        if not control:
            if style:
                term.write_styled(text, style)
            else:
                term.write_text(text)
        else:
            control_codes: Sequence[ControlCode] = control
            for control_code in control_codes:
                control_type = control_code[0]
                if control_type == ControlType.CURSOR_MOVE_TO:
                    _, x, y = cast(Tuple[ControlType, int, int], control_code)
                    term.move_cursor_to(WindowsCoordinates(row=y - 1, col=x - 1))
                elif control_type == ControlType.CARRIAGE_RETURN:
                    term.write_text("\r")
                elif control_type == ControlType.HOME:
                    term.move_cursor_to(WindowsCoordinates(0, 0))
                elif control_type == ControlType.CURSOR_UP:
                    term.move_cursor_up()
                elif control_type == ControlType.CURSOR_DOWN:
                    term.move_cursor_down()
                elif control_type == ControlType.CURSOR_FORWARD:
                    term.move_cursor_forward()
                elif control_type == ControlType.CURSOR_BACKWARD:
                    term.move_cursor_backward()
                elif control_type == ControlType.CURSOR_MOVE_TO_COLUMN:
                    _, column = cast(Tuple[ControlType, int], control_code)
                    term.move_cursor_to_column(column - 1)
                elif control_type == ControlType.HIDE_CURSOR:
                    term.hide_cursor()
                elif control_type == ControlType.SHOW_CURSOR:
                    term.show_cursor()
                elif control_type == ControlType.ERASE_IN_LINE:
                    _, mode = cast(Tuple[ControlType, int], control_code)
                    if mode == 0:
                        term.erase_end_of_line()
                    elif mode == 1:
                        term.erase_start_of_line()
                    elif mode == 2:
                        term.erase_line()
                elif control_type == ControlType.SET_WINDOW_TITLE:
                    _, title = cast(Tuple[ControlType, str], control_code)
                    term.set_title(title)
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