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Diffstat (limited to 'venv/lib/python3.11/site-packages/rich/_win32_console.py')
| -rw-r--r-- | venv/lib/python3.11/site-packages/rich/_win32_console.py | 662 |
1 files changed, 662 insertions, 0 deletions
diff --git a/venv/lib/python3.11/site-packages/rich/_win32_console.py b/venv/lib/python3.11/site-packages/rich/_win32_console.py new file mode 100644 index 0000000..e969d81 --- /dev/null +++ b/venv/lib/python3.11/site-packages/rich/_win32_console.py @@ -0,0 +1,662 @@ +"""Light wrapper around the Win32 Console API - this module should only be imported on Windows + +The API that this module wraps is documented at https://docs.microsoft.com/en-us/windows/console/console-functions +""" +import ctypes +import sys +from typing import Any + +windll: Any = None +if sys.platform == "win32": + windll = ctypes.LibraryLoader(ctypes.WinDLL) +else: + raise ImportError(f"{__name__} can only be imported on Windows") + +import time +from ctypes import Structure, byref, wintypes +from typing import IO, NamedTuple, Type, cast + +from rich.color import ColorSystem +from rich.style import Style + +STDOUT = -11 +ENABLE_VIRTUAL_TERMINAL_PROCESSING = 4 + +COORD = wintypes._COORD + + +class LegacyWindowsError(Exception): + pass + + +class WindowsCoordinates(NamedTuple): + """Coordinates in the Windows Console API are (y, x), not (x, y). + This class is intended to prevent that confusion. + Rows and columns are indexed from 0. + This class can be used in place of wintypes._COORD in arguments and argtypes. + """ + + row: int + col: int + + @classmethod + def from_param(cls, value: "WindowsCoordinates") -> COORD: + """Converts a WindowsCoordinates into a wintypes _COORD structure. + This classmethod is internally called by ctypes to perform the conversion. + + Args: + value (WindowsCoordinates): The input coordinates to convert. + + Returns: + wintypes._COORD: The converted coordinates struct. + """ + return COORD(value.col, value.row) + + +class CONSOLE_SCREEN_BUFFER_INFO(Structure): + _fields_ = [ + ("dwSize", COORD), + ("dwCursorPosition", COORD), + ("wAttributes", wintypes.WORD), + ("srWindow", wintypes.SMALL_RECT), + ("dwMaximumWindowSize", COORD), + ] + + +class CONSOLE_CURSOR_INFO(ctypes.Structure): + _fields_ = [("dwSize", wintypes.DWORD), ("bVisible", wintypes.BOOL)] + + +_GetStdHandle = windll.kernel32.GetStdHandle +_GetStdHandle.argtypes = [ + wintypes.DWORD, +] +_GetStdHandle.restype = wintypes.HANDLE + + +def GetStdHandle(handle: int = STDOUT) -> wintypes.HANDLE: + """Retrieves a handle to the specified standard device (standard input, standard output, or standard error). + + Args: + handle (int): Integer identifier for the handle. Defaults to -11 (stdout). + + Returns: + wintypes.HANDLE: The handle + """ + return cast(wintypes.HANDLE, _GetStdHandle(handle)) + + +_GetConsoleMode = windll.kernel32.GetConsoleMode +_GetConsoleMode.argtypes = [wintypes.HANDLE, wintypes.LPDWORD] +_GetConsoleMode.restype = wintypes.BOOL + + +def GetConsoleMode(std_handle: wintypes.HANDLE) -> int: + """Retrieves the current input mode of a console's input buffer + or the current output mode of a console screen buffer. + + Args: + std_handle (wintypes.HANDLE): A handle to the console input buffer or the console screen buffer. + + Raises: + LegacyWindowsError: If any error occurs while calling the Windows console API. + + Returns: + int: Value representing the current console mode as documented at + https://docs.microsoft.com/en-us/windows/console/getconsolemode#parameters + """ + + console_mode = wintypes.DWORD() + success = bool(_GetConsoleMode(std_handle, console_mode)) + if not success: + raise LegacyWindowsError("Unable to get legacy Windows Console Mode") + return console_mode.value + + +_FillConsoleOutputCharacterW = windll.kernel32.FillConsoleOutputCharacterW +_FillConsoleOutputCharacterW.argtypes = [ + wintypes.HANDLE, + ctypes.c_char, + wintypes.DWORD, + cast(Type[COORD], WindowsCoordinates), + ctypes.POINTER(wintypes.DWORD), +] +_FillConsoleOutputCharacterW.restype = wintypes.BOOL + + +def FillConsoleOutputCharacter( + std_handle: wintypes.HANDLE, + char: str, + length: int, + start: WindowsCoordinates, +) -> int: + """Writes a character to the console screen buffer a specified number of times, beginning at the specified coordinates. + + Args: + std_handle (wintypes.HANDLE): A handle to the console input buffer or the console screen buffer. + char (str): The character to write. Must be a string of length 1. + length (int): The number of times to write the character. + start (WindowsCoordinates): The coordinates to start writing at. + + Returns: + int: The number of characters written. + """ + character = ctypes.c_char(char.encode()) + num_characters = wintypes.DWORD(length) + num_written = wintypes.DWORD(0) + _FillConsoleOutputCharacterW( + std_handle, + character, + num_characters, + start, + byref(num_written), + ) + return num_written.value + + +_FillConsoleOutputAttribute = windll.kernel32.FillConsoleOutputAttribute +_FillConsoleOutputAttribute.argtypes = [ + wintypes.HANDLE, + wintypes.WORD, + wintypes.DWORD, + cast(Type[COORD], WindowsCoordinates), + ctypes.POINTER(wintypes.DWORD), +] +_FillConsoleOutputAttribute.restype = wintypes.BOOL + + +def FillConsoleOutputAttribute( + std_handle: wintypes.HANDLE, + attributes: int, + length: int, + start: WindowsCoordinates, +) -> int: + """Sets the character attributes for a specified number of character cells, + beginning at the specified coordinates in a screen buffer. + + Args: + std_handle (wintypes.HANDLE): A handle to the console input buffer or the console screen buffer. + attributes (int): Integer value representing the foreground and background colours of the cells. + length (int): The number of cells to set the output attribute of. + start (WindowsCoordinates): The coordinates of the first cell whose attributes are to be set. + + Returns: + int: The number of cells whose attributes were actually set. + """ + num_cells = wintypes.DWORD(length) + style_attrs = wintypes.WORD(attributes) + num_written = wintypes.DWORD(0) + _FillConsoleOutputAttribute( + std_handle, style_attrs, num_cells, start, byref(num_written) + ) + return num_written.value + + +_SetConsoleTextAttribute = windll.kernel32.SetConsoleTextAttribute +_SetConsoleTextAttribute.argtypes = [ + wintypes.HANDLE, + wintypes.WORD, +] +_SetConsoleTextAttribute.restype = wintypes.BOOL + + +def SetConsoleTextAttribute( + std_handle: wintypes.HANDLE, attributes: wintypes.WORD +) -> bool: + """Set the colour attributes for all text written after this function is called. + + Args: + std_handle (wintypes.HANDLE): A handle to the console input buffer or the console screen buffer. + attributes (int): Integer value representing the foreground and background colours. + + + Returns: + bool: True if the attribute was set successfully, otherwise False. + """ + return bool(_SetConsoleTextAttribute(std_handle, attributes)) + + +_GetConsoleScreenBufferInfo = windll.kernel32.GetConsoleScreenBufferInfo +_GetConsoleScreenBufferInfo.argtypes = [ + wintypes.HANDLE, + ctypes.POINTER(CONSOLE_SCREEN_BUFFER_INFO), +] +_GetConsoleScreenBufferInfo.restype = wintypes.BOOL + + +def GetConsoleScreenBufferInfo( + std_handle: wintypes.HANDLE, +) -> CONSOLE_SCREEN_BUFFER_INFO: + """Retrieves information about the specified console screen buffer. + + Args: + std_handle (wintypes.HANDLE): A handle to the console input buffer or the console screen buffer. + + Returns: + CONSOLE_SCREEN_BUFFER_INFO: A CONSOLE_SCREEN_BUFFER_INFO ctype struct contain information about + screen size, cursor position, colour attributes, and more.""" + console_screen_buffer_info = CONSOLE_SCREEN_BUFFER_INFO() + _GetConsoleScreenBufferInfo(std_handle, byref(console_screen_buffer_info)) + return console_screen_buffer_info + + +_SetConsoleCursorPosition = windll.kernel32.SetConsoleCursorPosition +_SetConsoleCursorPosition.argtypes = [ + wintypes.HANDLE, + cast(Type[COORD], WindowsCoordinates), +] +_SetConsoleCursorPosition.restype = wintypes.BOOL + + +def SetConsoleCursorPosition( + std_handle: wintypes.HANDLE, coords: WindowsCoordinates +) -> bool: + """Set the position of the cursor in the console screen + + Args: + std_handle (wintypes.HANDLE): A handle to the console input buffer or the console screen buffer. + coords (WindowsCoordinates): The coordinates to move the cursor to. + + Returns: + bool: True if the function succeeds, otherwise False. + """ + return bool(_SetConsoleCursorPosition(std_handle, coords)) + + +_GetConsoleCursorInfo = windll.kernel32.GetConsoleCursorInfo +_GetConsoleCursorInfo.argtypes = [ + wintypes.HANDLE, + ctypes.POINTER(CONSOLE_CURSOR_INFO), +] +_GetConsoleCursorInfo.restype = wintypes.BOOL + + +def GetConsoleCursorInfo( + std_handle: wintypes.HANDLE, cursor_info: CONSOLE_CURSOR_INFO +) -> bool: + """Get the cursor info - used to get cursor visibility and width + + Args: + std_handle (wintypes.HANDLE): A handle to the console input buffer or the console screen buffer. + cursor_info (CONSOLE_CURSOR_INFO): CONSOLE_CURSOR_INFO ctype struct that receives information + about the console's cursor. + + Returns: + bool: True if the function succeeds, otherwise False. + """ + return bool(_GetConsoleCursorInfo(std_handle, byref(cursor_info))) + + +_SetConsoleCursorInfo = windll.kernel32.SetConsoleCursorInfo +_SetConsoleCursorInfo.argtypes = [ + wintypes.HANDLE, + ctypes.POINTER(CONSOLE_CURSOR_INFO), +] +_SetConsoleCursorInfo.restype = wintypes.BOOL + + +def SetConsoleCursorInfo( + std_handle: wintypes.HANDLE, cursor_info: CONSOLE_CURSOR_INFO +) -> bool: + """Set the cursor info - used for adjusting cursor visibility and width + + Args: + std_handle (wintypes.HANDLE): A handle to the console input buffer or the console screen buffer. + cursor_info (CONSOLE_CURSOR_INFO): CONSOLE_CURSOR_INFO ctype struct containing the new cursor info. + + Returns: + bool: True if the function succeeds, otherwise False. + """ + return bool(_SetConsoleCursorInfo(std_handle, byref(cursor_info))) + + +_SetConsoleTitle = windll.kernel32.SetConsoleTitleW +_SetConsoleTitle.argtypes = [wintypes.LPCWSTR] +_SetConsoleTitle.restype = wintypes.BOOL + + +def SetConsoleTitle(title: str) -> bool: + """Sets the title of the current console window + + Args: + title (str): The new title of the console window. + + Returns: + bool: True if the function succeeds, otherwise False. + """ + return bool(_SetConsoleTitle(title)) + + +class LegacyWindowsTerm: + """This class allows interaction with the legacy Windows Console API. It should only be used in the context + of environments where virtual terminal processing is not available. However, if it is used in a Windows environment, + the entire API should work. + + Args: + file (IO[str]): The file which the Windows Console API HANDLE is retrieved from, defaults to sys.stdout. + """ + + BRIGHT_BIT = 8 + + # Indices are ANSI color numbers, values are the corresponding Windows Console API color numbers + ANSI_TO_WINDOWS = [ + 0, # black The Windows colours are defined in wincon.h as follows: + 4, # red define FOREGROUND_BLUE 0x0001 -- 0000 0001 + 2, # green define FOREGROUND_GREEN 0x0002 -- 0000 0010 + 6, # yellow define FOREGROUND_RED 0x0004 -- 0000 0100 + 1, # blue define FOREGROUND_INTENSITY 0x0008 -- 0000 1000 + 5, # magenta define BACKGROUND_BLUE 0x0010 -- 0001 0000 + 3, # cyan define BACKGROUND_GREEN 0x0020 -- 0010 0000 + 7, # white define BACKGROUND_RED 0x0040 -- 0100 0000 + 8, # bright black (grey) define BACKGROUND_INTENSITY 0x0080 -- 1000 0000 + 12, # bright red + 10, # bright green + 14, # bright yellow + 9, # bright blue + 13, # bright magenta + 11, # bright cyan + 15, # bright white + ] + + def __init__(self, file: "IO[str]") -> None: + handle = GetStdHandle(STDOUT) + self._handle = handle + default_text = GetConsoleScreenBufferInfo(handle).wAttributes + self._default_text = default_text + + self._default_fore = default_text & 7 + self._default_back = (default_text >> 4) & 7 + self._default_attrs = self._default_fore | (self._default_back << 4) + + self._file = file + self.write = file.write + self.flush = file.flush + + @property + def cursor_position(self) -> WindowsCoordinates: + """Returns the current position of the cursor (0-based) + + Returns: + WindowsCoordinates: The current cursor position. + """ + coord: COORD = GetConsoleScreenBufferInfo(self._handle).dwCursorPosition + return WindowsCoordinates(row=cast(int, coord.Y), col=cast(int, coord.X)) + + @property + def screen_size(self) -> WindowsCoordinates: + """Returns the current size of the console screen buffer, in character columns and rows + + Returns: + WindowsCoordinates: The width and height of the screen as WindowsCoordinates. + """ + screen_size: COORD = GetConsoleScreenBufferInfo(self._handle).dwSize + return WindowsCoordinates( + row=cast(int, screen_size.Y), col=cast(int, screen_size.X) + ) + + def write_text(self, text: str) -> None: + """Write text directly to the terminal without any modification of styles + + Args: + text (str): The text to write to the console + """ + self.write(text) + self.flush() + + def write_styled(self, text: str, style: Style) -> None: + """Write styled text to the terminal. + + Args: + text (str): The text to write + style (Style): The style of the text + """ + color = style.color + bgcolor = style.bgcolor + if style.reverse: + color, bgcolor = bgcolor, color + + if color: + fore = color.downgrade(ColorSystem.WINDOWS).number + fore = fore if fore is not None else 7 # Default to ANSI 7: White + if style.bold: + fore = fore | self.BRIGHT_BIT + if style.dim: + fore = fore & ~self.BRIGHT_BIT + fore = self.ANSI_TO_WINDOWS[fore] + else: + fore = self._default_fore + + if bgcolor: + back = bgcolor.downgrade(ColorSystem.WINDOWS).number + back = back if back is not None else 0 # Default to ANSI 0: Black + back = self.ANSI_TO_WINDOWS[back] + else: + back = self._default_back + + assert fore is not None + assert back is not None + + SetConsoleTextAttribute( + self._handle, attributes=ctypes.c_ushort(fore | (back << 4)) + ) + self.write_text(text) + SetConsoleTextAttribute(self._handle, attributes=self._default_text) + + def move_cursor_to(self, new_position: WindowsCoordinates) -> None: + """Set the position of the cursor + + Args: + new_position (WindowsCoordinates): The WindowsCoordinates representing the new position of the cursor. + """ + if new_position.col < 0 or new_position.row < 0: + return + SetConsoleCursorPosition(self._handle, coords=new_position) + + def erase_line(self) -> None: + """Erase all content on the line the cursor is currently located at""" + screen_size = self.screen_size + cursor_position = self.cursor_position + cells_to_erase = screen_size.col + start_coordinates = WindowsCoordinates(row=cursor_position.row, col=0) + FillConsoleOutputCharacter( + self._handle, " ", length=cells_to_erase, start=start_coordinates + ) + FillConsoleOutputAttribute( + self._handle, + self._default_attrs, + length=cells_to_erase, + start=start_coordinates, + ) + + def erase_end_of_line(self) -> None: + """Erase all content from the cursor position to the end of that line""" + cursor_position = self.cursor_position + cells_to_erase = self.screen_size.col - cursor_position.col + FillConsoleOutputCharacter( + self._handle, " ", length=cells_to_erase, start=cursor_position + ) + FillConsoleOutputAttribute( + self._handle, + self._default_attrs, + length=cells_to_erase, + start=cursor_position, + ) + + def erase_start_of_line(self) -> None: + """Erase all content from the cursor position to the start of that line""" + row, col = self.cursor_position + start = WindowsCoordinates(row, 0) + FillConsoleOutputCharacter(self._handle, " ", length=col, start=start) + FillConsoleOutputAttribute( + self._handle, self._default_attrs, length=col, start=start + ) + + def move_cursor_up(self) -> None: + """Move the cursor up a single cell""" + cursor_position = self.cursor_position + SetConsoleCursorPosition( + self._handle, + coords=WindowsCoordinates( + row=cursor_position.row - 1, col=cursor_position.col + ), + ) + + def move_cursor_down(self) -> None: + """Move the cursor down a single cell""" + cursor_position = self.cursor_position + SetConsoleCursorPosition( + self._handle, + coords=WindowsCoordinates( + row=cursor_position.row + 1, + col=cursor_position.col, + ), + ) + + def move_cursor_forward(self) -> None: + """Move the cursor forward a single cell. Wrap to the next line if required.""" + row, col = self.cursor_position + if col == self.screen_size.col - 1: + row += 1 + col = 0 + else: + col += 1 + SetConsoleCursorPosition( + self._handle, coords=WindowsCoordinates(row=row, col=col) + ) + + def move_cursor_to_column(self, column: int) -> None: + """Move cursor to the column specified by the zero-based column index, staying on the same row + + Args: + column (int): The zero-based column index to move the cursor to. + """ + row, _ = self.cursor_position + SetConsoleCursorPosition(self._handle, coords=WindowsCoordinates(row, column)) + + def move_cursor_backward(self) -> None: + """Move the cursor backward a single cell. Wrap to the previous line if required.""" + row, col = self.cursor_position + if col == 0: + row -= 1 + col = self.screen_size.col - 1 + else: + col -= 1 + SetConsoleCursorPosition( + self._handle, coords=WindowsCoordinates(row=row, col=col) + ) + + def hide_cursor(self) -> None: + """Hide the cursor""" + current_cursor_size = self._get_cursor_size() + invisible_cursor = CONSOLE_CURSOR_INFO(dwSize=current_cursor_size, bVisible=0) + SetConsoleCursorInfo(self._handle, cursor_info=invisible_cursor) + + def show_cursor(self) -> None: + """Show the cursor""" + current_cursor_size = self._get_cursor_size() + visible_cursor = CONSOLE_CURSOR_INFO(dwSize=current_cursor_size, bVisible=1) + SetConsoleCursorInfo(self._handle, cursor_info=visible_cursor) + + def set_title(self, title: str) -> None: + """Set the title of the terminal window + + Args: + title (str): The new title of the console window + """ + assert len(title) < 255, "Console title must be less than 255 characters" + SetConsoleTitle(title) + + def _get_cursor_size(self) -> int: + """Get the percentage of the character cell that is filled by the cursor""" + cursor_info = CONSOLE_CURSOR_INFO() + GetConsoleCursorInfo(self._handle, cursor_info=cursor_info) + return int(cursor_info.dwSize) + + +if __name__ == "__main__": + handle = GetStdHandle() + + from rich.console import Console + + console = Console() + + term = LegacyWindowsTerm(sys.stdout) + term.set_title("Win32 Console Examples") + + style = Style(color="black", bgcolor="red") + + heading = Style.parse("black on green") + + # Check colour output + console.rule("Checking colour output") + console.print("[on red]on red!") + console.print("[blue]blue!") + console.print("[yellow]yellow!") + console.print("[bold yellow]bold yellow!") + console.print("[bright_yellow]bright_yellow!") + console.print("[dim bright_yellow]dim bright_yellow!") + console.print("[italic cyan]italic cyan!") + console.print("[bold white on blue]bold white on blue!") + console.print("[reverse bold white on blue]reverse bold white on blue!") + console.print("[bold black on cyan]bold black on cyan!") + console.print("[black on green]black on green!") + console.print("[blue on green]blue on green!") + console.print("[white on black]white on black!") + console.print("[black on white]black on white!") + console.print("[#1BB152 on #DA812D]#1BB152 on #DA812D!") + + # Check cursor movement + console.rule("Checking cursor movement") + console.print() + term.move_cursor_backward() + term.move_cursor_backward() + term.write_text("went back and wrapped to prev line") + time.sleep(1) + term.move_cursor_up() + term.write_text("we go up") + time.sleep(1) + term.move_cursor_down() + term.write_text("and down") + time.sleep(1) + term.move_cursor_up() + term.move_cursor_backward() + term.move_cursor_backward() + term.write_text("we went up and back 2") + time.sleep(1) + term.move_cursor_down() + term.move_cursor_backward() + term.move_cursor_backward() + term.write_text("we went down and back 2") + time.sleep(1) + + # Check erasing of lines + term.hide_cursor() + console.print() + console.rule("Checking line erasing") + console.print("\n...Deleting to the start of the line...") + term.write_text("The red arrow shows the cursor location, and direction of erase") + time.sleep(1) + term.move_cursor_to_column(16) + term.write_styled("<", Style.parse("black on red")) + term.move_cursor_backward() + time.sleep(1) + term.erase_start_of_line() + time.sleep(1) + + console.print("\n\n...And to the end of the line...") + term.write_text("The red arrow shows the cursor location, and direction of erase") + time.sleep(1) + + term.move_cursor_to_column(16) + term.write_styled(">", Style.parse("black on red")) + time.sleep(1) + term.erase_end_of_line() + time.sleep(1) + + console.print("\n\n...Now the whole line will be erased...") + term.write_styled("I'm going to disappear!", style=Style.parse("black on cyan")) + time.sleep(1) + term.erase_line() + + term.show_cursor() + print("\n") |