diff options
Diffstat (limited to 'src/prompt_toolkit/output')
| -rw-r--r-- | src/prompt_toolkit/output/__init__.py | 15 | ||||
| -rw-r--r-- | src/prompt_toolkit/output/base.py | 331 | ||||
| -rw-r--r-- | src/prompt_toolkit/output/color_depth.py | 64 | ||||
| -rw-r--r-- | src/prompt_toolkit/output/conemu.py | 65 | ||||
| -rw-r--r-- | src/prompt_toolkit/output/defaults.py | 102 | ||||
| -rw-r--r-- | src/prompt_toolkit/output/flush_stdout.py | 87 | ||||
| -rw-r--r-- | src/prompt_toolkit/output/plain_text.py | 143 | ||||
| -rw-r--r-- | src/prompt_toolkit/output/vt100.py | 747 | ||||
| -rw-r--r-- | src/prompt_toolkit/output/win32.py | 683 | ||||
| -rw-r--r-- | src/prompt_toolkit/output/windows10.py | 128 |
10 files changed, 2365 insertions, 0 deletions
diff --git a/src/prompt_toolkit/output/__init__.py b/src/prompt_toolkit/output/__init__.py new file mode 100644 index 0000000..6b4c5f3 --- /dev/null +++ b/src/prompt_toolkit/output/__init__.py @@ -0,0 +1,15 @@ +from __future__ import annotations + +from .base import DummyOutput, Output +from .color_depth import ColorDepth +from .defaults import create_output + +__all__ = [ + # Base. + "Output", + "DummyOutput", + # Color depth. + "ColorDepth", + # Defaults. + "create_output", +] diff --git a/src/prompt_toolkit/output/base.py b/src/prompt_toolkit/output/base.py new file mode 100644 index 0000000..3c38cec --- /dev/null +++ b/src/prompt_toolkit/output/base.py @@ -0,0 +1,331 @@ +""" +Interface for an output. +""" +from __future__ import annotations + +from abc import ABCMeta, abstractmethod +from typing import TextIO + +from prompt_toolkit.cursor_shapes import CursorShape +from prompt_toolkit.data_structures import Size +from prompt_toolkit.styles import Attrs + +from .color_depth import ColorDepth + +__all__ = [ + "Output", + "DummyOutput", +] + + +class Output(metaclass=ABCMeta): + """ + Base class defining the output interface for a + :class:`~prompt_toolkit.renderer.Renderer`. + + Actual implementations are + :class:`~prompt_toolkit.output.vt100.Vt100_Output` and + :class:`~prompt_toolkit.output.win32.Win32Output`. + """ + + stdout: TextIO | None = None + + @abstractmethod + def fileno(self) -> int: + "Return the file descriptor to which we can write for the output." + + @abstractmethod + def encoding(self) -> str: + """ + Return the encoding for this output, e.g. 'utf-8'. + (This is used mainly to know which characters are supported by the + output the data, so that the UI can provide alternatives, when + required.) + """ + + @abstractmethod + def write(self, data: str) -> None: + "Write text (Terminal escape sequences will be removed/escaped.)" + + @abstractmethod + def write_raw(self, data: str) -> None: + "Write text." + + @abstractmethod + def set_title(self, title: str) -> None: + "Set terminal title." + + @abstractmethod + def clear_title(self) -> None: + "Clear title again. (or restore previous title.)" + + @abstractmethod + def flush(self) -> None: + "Write to output stream and flush." + + @abstractmethod + def erase_screen(self) -> None: + """ + Erases the screen with the background color and moves the cursor to + home. + """ + + @abstractmethod + def enter_alternate_screen(self) -> None: + "Go to the alternate screen buffer. (For full screen applications)." + + @abstractmethod + def quit_alternate_screen(self) -> None: + "Leave the alternate screen buffer." + + @abstractmethod + def enable_mouse_support(self) -> None: + "Enable mouse." + + @abstractmethod + def disable_mouse_support(self) -> None: + "Disable mouse." + + @abstractmethod + def erase_end_of_line(self) -> None: + """ + Erases from the current cursor position to the end of the current line. + """ + + @abstractmethod + def erase_down(self) -> None: + """ + Erases the screen from the current line down to the bottom of the + screen. + """ + + @abstractmethod + def reset_attributes(self) -> None: + "Reset color and styling attributes." + + @abstractmethod + def set_attributes(self, attrs: Attrs, color_depth: ColorDepth) -> None: + "Set new color and styling attributes." + + @abstractmethod + def disable_autowrap(self) -> None: + "Disable auto line wrapping." + + @abstractmethod + def enable_autowrap(self) -> None: + "Enable auto line wrapping." + + @abstractmethod + def cursor_goto(self, row: int = 0, column: int = 0) -> None: + "Move cursor position." + + @abstractmethod + def cursor_up(self, amount: int) -> None: + "Move cursor `amount` place up." + + @abstractmethod + def cursor_down(self, amount: int) -> None: + "Move cursor `amount` place down." + + @abstractmethod + def cursor_forward(self, amount: int) -> None: + "Move cursor `amount` place forward." + + @abstractmethod + def cursor_backward(self, amount: int) -> None: + "Move cursor `amount` place backward." + + @abstractmethod + def hide_cursor(self) -> None: + "Hide cursor." + + @abstractmethod + def show_cursor(self) -> None: + "Show cursor." + + @abstractmethod + def set_cursor_shape(self, cursor_shape: CursorShape) -> None: + "Set cursor shape to block, beam or underline." + + @abstractmethod + def reset_cursor_shape(self) -> None: + "Reset cursor shape." + + def ask_for_cpr(self) -> None: + """ + Asks for a cursor position report (CPR). + (VT100 only.) + """ + + @property + def responds_to_cpr(self) -> bool: + """ + `True` if the `Application` can expect to receive a CPR response after + calling `ask_for_cpr` (this will come back through the corresponding + `Input`). + + This is used to determine the amount of available rows we have below + the cursor position. In the first place, we have this so that the drop + down autocompletion menus are sized according to the available space. + + On Windows, we don't need this, there we have + `get_rows_below_cursor_position`. + """ + return False + + @abstractmethod + def get_size(self) -> Size: + "Return the size of the output window." + + def bell(self) -> None: + "Sound bell." + + def enable_bracketed_paste(self) -> None: + "For vt100 only." + + def disable_bracketed_paste(self) -> None: + "For vt100 only." + + def reset_cursor_key_mode(self) -> None: + """ + For vt100 only. + Put the terminal in normal cursor mode (instead of application mode). + + See: https://vt100.net/docs/vt100-ug/chapter3.html + """ + + def scroll_buffer_to_prompt(self) -> None: + "For Win32 only." + + def get_rows_below_cursor_position(self) -> int: + "For Windows only." + raise NotImplementedError + + @abstractmethod + def get_default_color_depth(self) -> ColorDepth: + """ + Get default color depth for this output. + + This value will be used if no color depth was explicitly passed to the + `Application`. + + .. note:: + + If the `$PROMPT_TOOLKIT_COLOR_DEPTH` environment variable has been + set, then `outputs.defaults.create_output` will pass this value to + the implementation as the default_color_depth, which is returned + here. (This is not used when the output corresponds to a + prompt_toolkit SSH/Telnet session.) + """ + + +class DummyOutput(Output): + """ + For testing. An output class that doesn't render anything. + """ + + def fileno(self) -> int: + "There is no sensible default for fileno()." + raise NotImplementedError + + def encoding(self) -> str: + return "utf-8" + + def write(self, data: str) -> None: + pass + + def write_raw(self, data: str) -> None: + pass + + def set_title(self, title: str) -> None: + pass + + def clear_title(self) -> None: + pass + + def flush(self) -> None: + pass + + def erase_screen(self) -> None: + pass + + def enter_alternate_screen(self) -> None: + pass + + def quit_alternate_screen(self) -> None: + pass + + def enable_mouse_support(self) -> None: + pass + + def disable_mouse_support(self) -> None: + pass + + def erase_end_of_line(self) -> None: + pass + + def erase_down(self) -> None: + pass + + def reset_attributes(self) -> None: + pass + + def set_attributes(self, attrs: Attrs, color_depth: ColorDepth) -> None: + pass + + def disable_autowrap(self) -> None: + pass + + def enable_autowrap(self) -> None: + pass + + def cursor_goto(self, row: int = 0, column: int = 0) -> None: + pass + + def cursor_up(self, amount: int) -> None: + pass + + def cursor_down(self, amount: int) -> None: + pass + + def cursor_forward(self, amount: int) -> None: + pass + + def cursor_backward(self, amount: int) -> None: + pass + + def hide_cursor(self) -> None: + pass + + def show_cursor(self) -> None: + pass + + def set_cursor_shape(self, cursor_shape: CursorShape) -> None: + pass + + def reset_cursor_shape(self) -> None: + pass + + def ask_for_cpr(self) -> None: + pass + + def bell(self) -> None: + pass + + def enable_bracketed_paste(self) -> None: + pass + + def disable_bracketed_paste(self) -> None: + pass + + def scroll_buffer_to_prompt(self) -> None: + pass + + def get_size(self) -> Size: + return Size(rows=40, columns=80) + + def get_rows_below_cursor_position(self) -> int: + return 40 + + def get_default_color_depth(self) -> ColorDepth: + return ColorDepth.DEPTH_1_BIT diff --git a/src/prompt_toolkit/output/color_depth.py b/src/prompt_toolkit/output/color_depth.py new file mode 100644 index 0000000..f66d2be --- /dev/null +++ b/src/prompt_toolkit/output/color_depth.py @@ -0,0 +1,64 @@ +from __future__ import annotations + +import os +from enum import Enum + +__all__ = [ + "ColorDepth", +] + + +class ColorDepth(str, Enum): + """ + Possible color depth values for the output. + """ + + value: str + + #: One color only. + DEPTH_1_BIT = "DEPTH_1_BIT" + + #: ANSI Colors. + DEPTH_4_BIT = "DEPTH_4_BIT" + + #: The default. + DEPTH_8_BIT = "DEPTH_8_BIT" + + #: 24 bit True color. + DEPTH_24_BIT = "DEPTH_24_BIT" + + # Aliases. + MONOCHROME = DEPTH_1_BIT + ANSI_COLORS_ONLY = DEPTH_4_BIT + DEFAULT = DEPTH_8_BIT + TRUE_COLOR = DEPTH_24_BIT + + @classmethod + def from_env(cls) -> ColorDepth | None: + """ + Return the color depth if the $PROMPT_TOOLKIT_COLOR_DEPTH environment + variable has been set. + + This is a way to enforce a certain color depth in all prompt_toolkit + applications. + """ + # Disable color if a `NO_COLOR` environment variable is set. + # See: https://no-color.org/ + if os.environ.get("NO_COLOR"): + return cls.DEPTH_1_BIT + + # Check the `PROMPT_TOOLKIT_COLOR_DEPTH` environment variable. + all_values = [i.value for i in ColorDepth] + if os.environ.get("PROMPT_TOOLKIT_COLOR_DEPTH") in all_values: + return cls(os.environ["PROMPT_TOOLKIT_COLOR_DEPTH"]) + + return None + + @classmethod + def default(cls) -> ColorDepth: + """ + Return the default color depth for the default output. + """ + from .defaults import create_output + + return create_output().get_default_color_depth() diff --git a/src/prompt_toolkit/output/conemu.py b/src/prompt_toolkit/output/conemu.py new file mode 100644 index 0000000..6369944 --- /dev/null +++ b/src/prompt_toolkit/output/conemu.py @@ -0,0 +1,65 @@ +from __future__ import annotations + +import sys + +assert sys.platform == "win32" + +from typing import Any, TextIO + +from prompt_toolkit.data_structures import Size + +from .base import Output +from .color_depth import ColorDepth +from .vt100 import Vt100_Output +from .win32 import Win32Output + +__all__ = [ + "ConEmuOutput", +] + + +class ConEmuOutput: + """ + ConEmu (Windows) output abstraction. + + ConEmu is a Windows console application, but it also supports ANSI escape + sequences. This output class is actually a proxy to both `Win32Output` and + `Vt100_Output`. It uses `Win32Output` for console sizing and scrolling, but + all cursor movements and scrolling happens through the `Vt100_Output`. + + This way, we can have 256 colors in ConEmu and Cmder. Rendering will be + even a little faster as well. + + http://conemu.github.io/ + http://gooseberrycreative.com/cmder/ + """ + + def __init__( + self, stdout: TextIO, default_color_depth: ColorDepth | None = None + ) -> None: + self.win32_output = Win32Output(stdout, default_color_depth=default_color_depth) + self.vt100_output = Vt100_Output( + stdout, lambda: Size(0, 0), default_color_depth=default_color_depth + ) + + @property + def responds_to_cpr(self) -> bool: + return False # We don't need this on Windows. + + def __getattr__(self, name: str) -> Any: + if name in ( + "get_size", + "get_rows_below_cursor_position", + "enable_mouse_support", + "disable_mouse_support", + "scroll_buffer_to_prompt", + "get_win32_screen_buffer_info", + "enable_bracketed_paste", + "disable_bracketed_paste", + ): + return getattr(self.win32_output, name) + else: + return getattr(self.vt100_output, name) + + +Output.register(ConEmuOutput) diff --git a/src/prompt_toolkit/output/defaults.py b/src/prompt_toolkit/output/defaults.py new file mode 100644 index 0000000..ed114e3 --- /dev/null +++ b/src/prompt_toolkit/output/defaults.py @@ -0,0 +1,102 @@ +from __future__ import annotations + +import sys +from typing import TextIO, cast + +from prompt_toolkit.utils import ( + get_bell_environment_variable, + get_term_environment_variable, + is_conemu_ansi, +) + +from .base import DummyOutput, Output +from .color_depth import ColorDepth +from .plain_text import PlainTextOutput + +__all__ = [ + "create_output", +] + + +def create_output( + stdout: TextIO | None = None, always_prefer_tty: bool = False +) -> Output: + """ + Return an :class:`~prompt_toolkit.output.Output` instance for the command + line. + + :param stdout: The stdout object + :param always_prefer_tty: When set, look for `sys.stderr` if `sys.stdout` + is not a TTY. Useful if `sys.stdout` is redirected to a file, but we + still want user input and output on the terminal. + + By default, this is `False`. If `sys.stdout` is not a terminal (maybe + it's redirected to a file), then a `PlainTextOutput` will be returned. + That way, tools like `print_formatted_text` will write plain text into + that file. + """ + # Consider TERM, PROMPT_TOOLKIT_BELL, and PROMPT_TOOLKIT_COLOR_DEPTH + # environment variables. Notice that PROMPT_TOOLKIT_COLOR_DEPTH value is + # the default that's used if the Application doesn't override it. + term_from_env = get_term_environment_variable() + bell_from_env = get_bell_environment_variable() + color_depth_from_env = ColorDepth.from_env() + + if stdout is None: + # By default, render to stdout. If the output is piped somewhere else, + # render to stderr. + stdout = sys.stdout + + if always_prefer_tty: + for io in [sys.stdout, sys.stderr]: + if io is not None and io.isatty(): + # (This is `None` when using `pythonw.exe` on Windows.) + stdout = io + break + + # If the output is still `None`, use a DummyOutput. + # This happens for instance on Windows, when running the application under + # `pythonw.exe`. In that case, there won't be a terminal Window, and + # stdin/stdout/stderr are `None`. + if stdout is None: + return DummyOutput() + + # If the patch_stdout context manager has been used, then sys.stdout is + # replaced by this proxy. For prompt_toolkit applications, we want to use + # the real stdout. + from prompt_toolkit.patch_stdout import StdoutProxy + + while isinstance(stdout, StdoutProxy): + stdout = stdout.original_stdout + + if sys.platform == "win32": + from .conemu import ConEmuOutput + from .win32 import Win32Output + from .windows10 import Windows10_Output, is_win_vt100_enabled + + if is_win_vt100_enabled(): + return cast( + Output, + Windows10_Output(stdout, default_color_depth=color_depth_from_env), + ) + if is_conemu_ansi(): + return cast( + Output, ConEmuOutput(stdout, default_color_depth=color_depth_from_env) + ) + else: + return Win32Output(stdout, default_color_depth=color_depth_from_env) + else: + from .vt100 import Vt100_Output + + # Stdout is not a TTY? Render as plain text. + # This is mostly useful if stdout is redirected to a file, and + # `print_formatted_text` is used. + if not stdout.isatty(): + return PlainTextOutput(stdout) + + return Vt100_Output.from_pty( + stdout, + term=term_from_env, + default_color_depth=color_depth_from_env, + enable_bell=bell_from_env, + ) diff --git a/src/prompt_toolkit/output/flush_stdout.py b/src/prompt_toolkit/output/flush_stdout.py new file mode 100644 index 0000000..daf58ef --- /dev/null +++ b/src/prompt_toolkit/output/flush_stdout.py @@ -0,0 +1,87 @@ +from __future__ import annotations + +import errno +import os +import sys +from contextlib import contextmanager +from typing import IO, Iterator, TextIO + +__all__ = ["flush_stdout"] + + +def flush_stdout(stdout: TextIO, data: str) -> None: + # If the IO object has an `encoding` and `buffer` attribute, it means that + # we can access the underlying BinaryIO object and write into it in binary + # mode. This is preferred if possible. + # NOTE: When used in a Jupyter notebook, don't write binary. + # `ipykernel.iostream.OutStream` has an `encoding` attribute, but not + # a `buffer` attribute, so we can't write binary in it. + has_binary_io = hasattr(stdout, "encoding") and hasattr(stdout, "buffer") + + try: + # Ensure that `stdout` is made blocking when writing into it. + # Otherwise, when uvloop is activated (which makes stdout + # non-blocking), and we write big amounts of text, then we get a + # `BlockingIOError` here. + with _blocking_io(stdout): + # (We try to encode ourself, because that way we can replace + # characters that don't exist in the character set, avoiding + # UnicodeEncodeError crashes. E.g. u'\xb7' does not appear in 'ascii'.) + # My Arch Linux installation of july 2015 reported 'ANSI_X3.4-1968' + # for sys.stdout.encoding in xterm. + if has_binary_io: + stdout.buffer.write(data.encode(stdout.encoding or "utf-8", "replace")) + else: + stdout.write(data) + + stdout.flush() + except OSError as e: + if e.args and e.args[0] == errno.EINTR: + # Interrupted system call. Can happen in case of a window + # resize signal. (Just ignore. The resize handler will render + # again anyway.) + pass + elif e.args and e.args[0] == 0: + # This can happen when there is a lot of output and the user + # sends a KeyboardInterrupt by pressing Control-C. E.g. in + # a Python REPL when we execute "while True: print('test')". + # (The `ptpython` REPL uses this `Output` class instead of + # `stdout` directly -- in order to be network transparent.) + # So, just ignore. + pass + else: + raise + + +@contextmanager +def _blocking_io(io: IO[str]) -> Iterator[None]: + """ + Ensure that the FD for `io` is set to blocking in here. + """ + if sys.platform == "win32": + # On Windows, the `os` module doesn't have a `get/set_blocking` + # function. + yield + return + + try: + fd = io.fileno() + blocking = os.get_blocking(fd) + except: # noqa + # Failed somewhere. + # `get_blocking` can raise `OSError`. + # The io object can raise `AttributeError` when no `fileno()` method is + # present if we're not a real file object. + blocking = True # Assume we're good, and don't do anything. + + try: + # Make blocking if we weren't blocking yet. + if not blocking: + os.set_blocking(fd, True) + + yield + + finally: + # Restore original blocking mode. + if not blocking: + os.set_blocking(fd, blocking) diff --git a/src/prompt_toolkit/output/plain_text.py b/src/prompt_toolkit/output/plain_text.py new file mode 100644 index 0000000..4b24ad9 --- /dev/null +++ b/src/prompt_toolkit/output/plain_text.py @@ -0,0 +1,143 @@ +from __future__ import annotations + +from typing import TextIO + +from prompt_toolkit.cursor_shapes import CursorShape +from prompt_toolkit.data_structures import Size +from prompt_toolkit.styles import Attrs + +from .base import Output +from .color_depth import ColorDepth +from .flush_stdout import flush_stdout + +__all__ = ["PlainTextOutput"] + + +class PlainTextOutput(Output): + """ + Output that won't include any ANSI escape sequences. + + Useful when stdout is not a terminal. Maybe stdout is redirected to a file. + In this case, if `print_formatted_text` is used, for instance, we don't + want to include formatting. + + (The code is mostly identical to `Vt100_Output`, but without the + formatting.) + """ + + def __init__(self, stdout: TextIO) -> None: + assert all(hasattr(stdout, a) for a in ("write", "flush")) + + self.stdout: TextIO = stdout + self._buffer: list[str] = [] + + def fileno(self) -> int: + "There is no sensible default for fileno()." + return self.stdout.fileno() + + def encoding(self) -> str: + return "utf-8" + + def write(self, data: str) -> None: + self._buffer.append(data) + + def write_raw(self, data: str) -> None: + self._buffer.append(data) + + def set_title(self, title: str) -> None: + pass + + def clear_title(self) -> None: + pass + + def flush(self) -> None: + if not self._buffer: + return + + data = "".join(self._buffer) + self._buffer = [] + flush_stdout(self.stdout, data) + + def erase_screen(self) -> None: + pass + + def enter_alternate_screen(self) -> None: + pass + + def quit_alternate_screen(self) -> None: + pass + + def enable_mouse_support(self) -> None: + pass + + def disable_mouse_support(self) -> None: + pass + + def erase_end_of_line(self) -> None: + pass + + def erase_down(self) -> None: + pass + + def reset_attributes(self) -> None: + pass + + def set_attributes(self, attrs: Attrs, color_depth: ColorDepth) -> None: + pass + + def disable_autowrap(self) -> None: + pass + + def enable_autowrap(self) -> None: + pass + + def cursor_goto(self, row: int = 0, column: int = 0) -> None: + pass + + def cursor_up(self, amount: int) -> None: + pass + + def cursor_down(self, amount: int) -> None: + self._buffer.append("\n") + + def cursor_forward(self, amount: int) -> None: + self._buffer.append(" " * amount) + + def cursor_backward(self, amount: int) -> None: + pass + + def hide_cursor(self) -> None: + pass + + def show_cursor(self) -> None: + pass + + def set_cursor_shape(self, cursor_shape: CursorShape) -> None: + pass + + def reset_cursor_shape(self) -> None: + pass + + def ask_for_cpr(self) -> None: + pass + + def bell(self) -> None: + pass + + def enable_bracketed_paste(self) -> None: + pass + + def disable_bracketed_paste(self) -> None: + pass + + def scroll_buffer_to_prompt(self) -> None: + pass + + def get_size(self) -> Size: + return Size(rows=40, columns=80) + + def get_rows_below_cursor_position(self) -> int: + return 8 + + def get_default_color_depth(self) -> ColorDepth: + return ColorDepth.DEPTH_1_BIT diff --git a/src/prompt_toolkit/output/vt100.py b/src/prompt_toolkit/output/vt100.py new file mode 100644 index 0000000..142deab --- /dev/null +++ b/src/prompt_toolkit/output/vt100.py @@ -0,0 +1,747 @@ +""" +Output for vt100 terminals. + +A lot of thanks, regarding outputting of colors, goes to the Pygments project: +(We don't rely on Pygments anymore, because many things are very custom, and +everything has been highly optimized.) +http://pygments.org/ +""" +from __future__ import annotations + +import io +import os +import sys +from typing import Callable, Dict, Hashable, Iterable, Sequence, TextIO, Tuple + +from prompt_toolkit.cursor_shapes import CursorShape +from prompt_toolkit.data_structures import Size +from prompt_toolkit.output import Output +from prompt_toolkit.styles import ANSI_COLOR_NAMES, Attrs +from prompt_toolkit.utils import is_dumb_terminal + +from .color_depth import ColorDepth +from .flush_stdout import flush_stdout + +__all__ = [ + "Vt100_Output", +] + + +FG_ANSI_COLORS = { + "ansidefault": 39, + # Low intensity. + "ansiblack": 30, + "ansired": 31, + "ansigreen": 32, + "ansiyellow": 33, + "ansiblue": 34, + "ansimagenta": 35, + "ansicyan": 36, + "ansigray": 37, + # High intensity. + "ansibrightblack": 90, + "ansibrightred": 91, + "ansibrightgreen": 92, + "ansibrightyellow": 93, + "ansibrightblue": 94, + "ansibrightmagenta": 95, + "ansibrightcyan": 96, + "ansiwhite": 97, +} + +BG_ANSI_COLORS = { + "ansidefault": 49, + # Low intensity. + "ansiblack": 40, + "ansired": 41, + "ansigreen": 42, + "ansiyellow": 43, + "ansiblue": 44, + "ansimagenta": 45, + "ansicyan": 46, + "ansigray": 47, + # High intensity. + "ansibrightblack": 100, + "ansibrightred": 101, + "ansibrightgreen": 102, + "ansibrightyellow": 103, + "ansibrightblue": 104, + "ansibrightmagenta": 105, + "ansibrightcyan": 106, + "ansiwhite": 107, +} + + +ANSI_COLORS_TO_RGB = { + "ansidefault": ( + 0x00, + 0x00, + 0x00, + ), # Don't use, 'default' doesn't really have a value. + "ansiblack": (0x00, 0x00, 0x00), + "ansigray": (0xE5, 0xE5, 0xE5), + "ansibrightblack": (0x7F, 0x7F, 0x7F), + "ansiwhite": (0xFF, 0xFF, 0xFF), + # Low intensity. + "ansired": (0xCD, 0x00, 0x00), + "ansigreen": (0x00, 0xCD, 0x00), + "ansiyellow": (0xCD, 0xCD, 0x00), + "ansiblue": (0x00, 0x00, 0xCD), + "ansimagenta": (0xCD, 0x00, 0xCD), + "ansicyan": (0x00, 0xCD, 0xCD), + # High intensity. + "ansibrightred": (0xFF, 0x00, 0x00), + "ansibrightgreen": (0x00, 0xFF, 0x00), + "ansibrightyellow": (0xFF, 0xFF, 0x00), + "ansibrightblue": (0x00, 0x00, 0xFF), + "ansibrightmagenta": (0xFF, 0x00, 0xFF), + "ansibrightcyan": (0x00, 0xFF, 0xFF), +} + + +assert set(FG_ANSI_COLORS) == set(ANSI_COLOR_NAMES) +assert set(BG_ANSI_COLORS) == set(ANSI_COLOR_NAMES) +assert set(ANSI_COLORS_TO_RGB) == set(ANSI_COLOR_NAMES) + + +def _get_closest_ansi_color(r: int, g: int, b: int, exclude: Sequence[str] = ()) -> str: + """ + Find closest ANSI color. Return it by name. + + :param r: Red (Between 0 and 255.) + :param g: Green (Between 0 and 255.) + :param b: Blue (Between 0 and 255.) + :param exclude: A tuple of color names to exclude. (E.g. ``('ansired', )``.) + """ + exclude = list(exclude) + + # When we have a bit of saturation, avoid the gray-like colors, otherwise, + # too often the distance to the gray color is less. + saturation = abs(r - g) + abs(g - b) + abs(b - r) # Between 0..510 + + if saturation > 30: + exclude.extend(["ansilightgray", "ansidarkgray", "ansiwhite", "ansiblack"]) + + # Take the closest color. + # (Thanks to Pygments for this part.) + distance = 257 * 257 * 3 # "infinity" (>distance from #000000 to #ffffff) + match = "ansidefault" + + for name, (r2, g2, b2) in ANSI_COLORS_TO_RGB.items(): + if name != "ansidefault" and name not in exclude: + d = (r - r2) ** 2 + (g - g2) ** 2 + (b - b2) ** 2 + + if d < distance: + match = name + distance = d + + return match + + +_ColorCodeAndName = Tuple[int, str] + + +class _16ColorCache: + """ + Cache which maps (r, g, b) tuples to 16 ansi colors. + + :param bg: Cache for background colors, instead of foreground. + """ + + def __init__(self, bg: bool = False) -> None: + self.bg = bg + self._cache: dict[Hashable, _ColorCodeAndName] = {} + + def get_code( + self, value: tuple[int, int, int], exclude: Sequence[str] = () + ) -> _ColorCodeAndName: + """ + Return a (ansi_code, ansi_name) tuple. (E.g. ``(44, 'ansiblue')``.) for + a given (r,g,b) value. + """ + key: Hashable = (value, tuple(exclude)) + cache = self._cache + + if key not in cache: + cache[key] = self._get(value, exclude) + + return cache[key] + + def _get( + self, value: tuple[int, int, int], exclude: Sequence[str] = () + ) -> _ColorCodeAndName: + r, g, b = value + match = _get_closest_ansi_color(r, g, b, exclude=exclude) + + # Turn color name into code. + if self.bg: + code = BG_ANSI_COLORS[match] + else: + code = FG_ANSI_COLORS[match] + + return code, match + + +class _256ColorCache(Dict[Tuple[int, int, int], int]): + """ + Cache which maps (r, g, b) tuples to 256 colors. + """ + + def __init__(self) -> None: + # Build color table. + colors: list[tuple[int, int, int]] = [] + + # colors 0..15: 16 basic colors + colors.append((0x00, 0x00, 0x00)) # 0 + colors.append((0xCD, 0x00, 0x00)) # 1 + colors.append((0x00, 0xCD, 0x00)) # 2 + colors.append((0xCD, 0xCD, 0x00)) # 3 + colors.append((0x00, 0x00, 0xEE)) # 4 + colors.append((0xCD, 0x00, 0xCD)) # 5 + colors.append((0x00, 0xCD, 0xCD)) # 6 + colors.append((0xE5, 0xE5, 0xE5)) # 7 + colors.append((0x7F, 0x7F, 0x7F)) # 8 + colors.append((0xFF, 0x00, 0x00)) # 9 + colors.append((0x00, 0xFF, 0x00)) # 10 + colors.append((0xFF, 0xFF, 0x00)) # 11 + colors.append((0x5C, 0x5C, 0xFF)) # 12 + colors.append((0xFF, 0x00, 0xFF)) # 13 + colors.append((0x00, 0xFF, 0xFF)) # 14 + colors.append((0xFF, 0xFF, 0xFF)) # 15 + + # colors 16..232: the 6x6x6 color cube + valuerange = (0x00, 0x5F, 0x87, 0xAF, 0xD7, 0xFF) + + for i in range(217): + r = valuerange[(i // 36) % 6] + g = valuerange[(i // 6) % 6] + b = valuerange[i % 6] + colors.append((r, g, b)) + + # colors 233..253: grayscale + for i in range(1, 22): + v = 8 + i * 10 + colors.append((v, v, v)) + + self.colors = colors + + def __missing__(self, value: tuple[int, int, int]) -> int: + r, g, b = value + + # Find closest color. + # (Thanks to Pygments for this!) + distance = 257 * 257 * 3 # "infinity" (>distance from #000000 to #ffffff) + match = 0 + + for i, (r2, g2, b2) in enumerate(self.colors): + if i >= 16: # XXX: We ignore the 16 ANSI colors when mapping RGB + # to the 256 colors, because these highly depend on + # the color scheme of the terminal. + d = (r - r2) ** 2 + (g - g2) ** 2 + (b - b2) ** 2 + + if d < distance: + match = i + distance = d + + # Turn color name into code. + self[value] = match + return match + + +_16_fg_colors = _16ColorCache(bg=False) +_16_bg_colors = _16ColorCache(bg=True) +_256_colors = _256ColorCache() + + +class _EscapeCodeCache(Dict[Attrs, str]): + """ + Cache for VT100 escape codes. It maps + (fgcolor, bgcolor, bold, underline, strike, reverse) tuples to VT100 + escape sequences. + + :param true_color: When True, use 24bit colors instead of 256 colors. + """ + + def __init__(self, color_depth: ColorDepth) -> None: + self.color_depth = color_depth + + def __missing__(self, attrs: Attrs) -> str: + ( + fgcolor, + bgcolor, + bold, + underline, + strike, + italic, + blink, + reverse, + hidden, + ) = attrs + parts: list[str] = [] + + parts.extend(self._colors_to_code(fgcolor or "", bgcolor or "")) + + if bold: + parts.append("1") + if italic: + parts.append("3") + if blink: + parts.append("5") + if underline: + parts.append("4") + if reverse: + parts.append("7") + if hidden: + parts.append("8") + if strike: + parts.append("9") + + if parts: + result = "\x1b[0;" + ";".join(parts) + "m" + else: + result = "\x1b[0m" + + self[attrs] = result + return result + + def _color_name_to_rgb(self, color: str) -> tuple[int, int, int]: + "Turn 'ffffff', into (0xff, 0xff, 0xff)." + try: + rgb = int(color, 16) + except ValueError: + raise + else: + r = (rgb >> 16) & 0xFF + g = (rgb >> 8) & 0xFF + b = rgb & 0xFF + return r, g, b + + def _colors_to_code(self, fg_color: str, bg_color: str) -> Iterable[str]: + """ + Return a tuple with the vt100 values that represent this color. + """ + # When requesting ANSI colors only, and both fg/bg color were converted + # to ANSI, ensure that the foreground and background color are not the + # same. (Unless they were explicitly defined to be the same color.) + fg_ansi = "" + + def get(color: str, bg: bool) -> list[int]: + nonlocal fg_ansi + + table = BG_ANSI_COLORS if bg else FG_ANSI_COLORS + + if not color or self.color_depth == ColorDepth.DEPTH_1_BIT: + return [] + + # 16 ANSI colors. (Given by name.) + elif color in table: + return [table[color]] + + # RGB colors. (Defined as 'ffffff'.) + else: + try: + rgb = self._color_name_to_rgb(color) + except ValueError: + return [] + + # When only 16 colors are supported, use that. + if self.color_depth == ColorDepth.DEPTH_4_BIT: + if bg: # Background. + if fg_color != bg_color: + exclude = [fg_ansi] + else: + exclude = [] + code, name = _16_bg_colors.get_code(rgb, exclude=exclude) + return [code] + else: # Foreground. + code, name = _16_fg_colors.get_code(rgb) + fg_ansi = name + return [code] + + # True colors. (Only when this feature is enabled.) + elif self.color_depth == ColorDepth.DEPTH_24_BIT: + r, g, b = rgb + return [(48 if bg else 38), 2, r, g, b] + + # 256 RGB colors. + else: + return [(48 if bg else 38), 5, _256_colors[rgb]] + + result: list[int] = [] + result.extend(get(fg_color, False)) + result.extend(get(bg_color, True)) + + return map(str, result) + + +def _get_size(fileno: int) -> tuple[int, int]: + """ + Get the size of this pseudo terminal. + + :param fileno: stdout.fileno() + :returns: A (rows, cols) tuple. + """ + size = os.get_terminal_size(fileno) + return size.lines, size.columns + + +class Vt100_Output(Output): + """ + :param get_size: A callable which returns the `Size` of the output terminal. + :param stdout: Any object with has a `write` and `flush` method + an 'encoding' property. + :param term: The terminal environment variable. (xterm, xterm-256color, linux, ...) + :param enable_cpr: When `True` (the default), send "cursor position + request" escape sequences to the output in order to detect the cursor + position. That way, we can properly determine how much space there is + available for the UI (especially for drop down menus) to render. The + `Renderer` will still try to figure out whether the current terminal + does respond to CPR escapes. When `False`, never attempt to send CPR + requests. + """ + + # For the error messages. Only display "Output is not a terminal" once per + # file descriptor. + _fds_not_a_terminal: set[int] = set() + + def __init__( + self, + stdout: TextIO, + get_size: Callable[[], Size], + term: str | None = None, + default_color_depth: ColorDepth | None = None, + enable_bell: bool = True, + enable_cpr: bool = True, + ) -> None: + assert all(hasattr(stdout, a) for a in ("write", "flush")) + + self._buffer: list[str] = [] + self.stdout: TextIO = stdout + self.default_color_depth = default_color_depth + self._get_size = get_size + self.term = term + self.enable_bell = enable_bell + self.enable_cpr = enable_cpr + + # Cache for escape codes. + self._escape_code_caches: dict[ColorDepth, _EscapeCodeCache] = { + ColorDepth.DEPTH_1_BIT: _EscapeCodeCache(ColorDepth.DEPTH_1_BIT), + ColorDepth.DEPTH_4_BIT: _EscapeCodeCache(ColorDepth.DEPTH_4_BIT), + ColorDepth.DEPTH_8_BIT: _EscapeCodeCache(ColorDepth.DEPTH_8_BIT), + ColorDepth.DEPTH_24_BIT: _EscapeCodeCache(ColorDepth.DEPTH_24_BIT), + } + + # Keep track of whether the cursor shape was ever changed. + # (We don't restore the cursor shape if it was never changed - by + # default, we don't change them.) + self._cursor_shape_changed = False + + @classmethod + def from_pty( + cls, + stdout: TextIO, + term: str | None = None, + default_color_depth: ColorDepth | None = None, + enable_bell: bool = True, + ) -> Vt100_Output: + """ + Create an Output class from a pseudo terminal. + (This will take the dimensions by reading the pseudo + terminal attributes.) + """ + fd: int | None + # Normally, this requires a real TTY device, but people instantiate + # this class often during unit tests as well. For convenience, we print + # an error message, use standard dimensions, and go on. + try: + fd = stdout.fileno() + except io.UnsupportedOperation: + fd = None + + if not stdout.isatty() and (fd is None or fd not in cls._fds_not_a_terminal): + msg = "Warning: Output is not a terminal (fd=%r).\n" + sys.stderr.write(msg % fd) + sys.stderr.flush() + if fd is not None: + cls._fds_not_a_terminal.add(fd) + + def get_size() -> Size: + # If terminal (incorrectly) reports its size as 0, pick a + # reasonable default. See + # https://github.com/ipython/ipython/issues/10071 + rows, columns = (None, None) + + # It is possible that `stdout` is no longer a TTY device at this + # point. In that case we get an `OSError` in the ioctl call in + # `get_size`. See: + # https://github.com/prompt-toolkit/python-prompt-toolkit/pull/1021 + try: + rows, columns = _get_size(stdout.fileno()) + except OSError: + pass + return Size(rows=rows or 24, columns=columns or 80) + + return cls( + stdout, + get_size, + term=term, + default_color_depth=default_color_depth, + enable_bell=enable_bell, + ) + + def get_size(self) -> Size: + return self._get_size() + + def fileno(self) -> int: + "Return file descriptor." + return self.stdout.fileno() + + def encoding(self) -> str: + "Return encoding used for stdout." + return self.stdout.encoding + + def write_raw(self, data: str) -> None: + """ + Write raw data to output. + """ + self._buffer.append(data) + + def write(self, data: str) -> None: + """ + Write text to output. + (Removes vt100 escape codes. -- used for safely writing text.) + """ + self._buffer.append(data.replace("\x1b", "?")) + + def set_title(self, title: str) -> None: + """ + Set terminal title. + """ + if self.term not in ( + "linux", + "eterm-color", + ): # Not supported by the Linux console. + self.write_raw( + "\x1b]2;%s\x07" % title.replace("\x1b", "").replace("\x07", "") + ) + + def clear_title(self) -> None: + self.set_title("") + + def erase_screen(self) -> None: + """ + Erases the screen with the background color and moves the cursor to + home. + """ + self.write_raw("\x1b[2J") + + def enter_alternate_screen(self) -> None: + self.write_raw("\x1b[?1049h\x1b[H") + + def quit_alternate_screen(self) -> None: + self.write_raw("\x1b[?1049l") + + def enable_mouse_support(self) -> None: + self.write_raw("\x1b[?1000h") + + # Enable mouse-drag support. + self.write_raw("\x1b[?1003h") + + # Enable urxvt Mouse mode. (For terminals that understand this.) + self.write_raw("\x1b[?1015h") + + # Also enable Xterm SGR mouse mode. (For terminals that understand this.) + self.write_raw("\x1b[?1006h") + + # Note: E.g. lxterminal understands 1000h, but not the urxvt or sgr + # extensions. + + def disable_mouse_support(self) -> None: + self.write_raw("\x1b[?1000l") + self.write_raw("\x1b[?1015l") + self.write_raw("\x1b[?1006l") + self.write_raw("\x1b[?1003l") + + def erase_end_of_line(self) -> None: + """ + Erases from the current cursor position to the end of the current line. + """ + self.write_raw("\x1b[K") + + def erase_down(self) -> None: + """ + Erases the screen from the current line down to the bottom of the + screen. + """ + self.write_raw("\x1b[J") + + def reset_attributes(self) -> None: + self.write_raw("\x1b[0m") + + def set_attributes(self, attrs: Attrs, color_depth: ColorDepth) -> None: + """ + Create new style and output. + + :param attrs: `Attrs` instance. + """ + # Get current depth. + escape_code_cache = self._escape_code_caches[color_depth] + + # Write escape character. + self.write_raw(escape_code_cache[attrs]) + + def disable_autowrap(self) -> None: + self.write_raw("\x1b[?7l") + + def enable_autowrap(self) -> None: + self.write_raw("\x1b[?7h") + + def enable_bracketed_paste(self) -> None: + self.write_raw("\x1b[?2004h") + + def disable_bracketed_paste(self) -> None: + self.write_raw("\x1b[?2004l") + + def reset_cursor_key_mode(self) -> None: + """ + For vt100 only. + Put the terminal in cursor mode (instead of application mode). + """ + # Put the terminal in cursor mode. (Instead of application mode.) + self.write_raw("\x1b[?1l") + + def cursor_goto(self, row: int = 0, column: int = 0) -> None: + """ + Move cursor position. + """ + self.write_raw("\x1b[%i;%iH" % (row, column)) + + def cursor_up(self, amount: int) -> None: + if amount == 0: + pass + elif amount == 1: + self.write_raw("\x1b[A") + else: + self.write_raw("\x1b[%iA" % amount) + + def cursor_down(self, amount: int) -> None: + if amount == 0: + pass + elif amount == 1: + # Note: Not the same as '\n', '\n' can cause the window content to + # scroll. + self.write_raw("\x1b[B") + else: + self.write_raw("\x1b[%iB" % amount) + + def cursor_forward(self, amount: int) -> None: + if amount == 0: + pass + elif amount == 1: + self.write_raw("\x1b[C") + else: + self.write_raw("\x1b[%iC" % amount) + + def cursor_backward(self, amount: int) -> None: + if amount == 0: + pass + elif amount == 1: + self.write_raw("\b") # '\x1b[D' + else: + self.write_raw("\x1b[%iD" % amount) + + def hide_cursor(self) -> None: + self.write_raw("\x1b[?25l") + + def show_cursor(self) -> None: + self.write_raw("\x1b[?12l\x1b[?25h") # Stop blinking cursor and show. + + def set_cursor_shape(self, cursor_shape: CursorShape) -> None: + if cursor_shape == CursorShape._NEVER_CHANGE: + return + + self._cursor_shape_changed = True + self.write_raw( + { + CursorShape.BLOCK: "\x1b[2 q", + CursorShape.BEAM: "\x1b[6 q", + CursorShape.UNDERLINE: "\x1b[4 q", + CursorShape.BLINKING_BLOCK: "\x1b[1 q", + CursorShape.BLINKING_BEAM: "\x1b[5 q", + CursorShape.BLINKING_UNDERLINE: "\x1b[3 q", + }.get(cursor_shape, "") + ) + + def reset_cursor_shape(self) -> None: + "Reset cursor shape." + # (Only reset cursor shape, if we ever changed it.) + if self._cursor_shape_changed: + self._cursor_shape_changed = False + + # Reset cursor shape. + self.write_raw("\x1b[0 q") + + def flush(self) -> None: + """ + Write to output stream and flush. + """ + if not self._buffer: + return + + data = "".join(self._buffer) + self._buffer = [] + + flush_stdout(self.stdout, data) + + def ask_for_cpr(self) -> None: + """ + Asks for a cursor position report (CPR). + """ + self.write_raw("\x1b[6n") + self.flush() + + @property + def responds_to_cpr(self) -> bool: + if not self.enable_cpr: + return False + + # When the input is a tty, we assume that CPR is supported. + # It's not when the input is piped from Pexpect. + if os.environ.get("PROMPT_TOOLKIT_NO_CPR", "") == "1": + return False + + if is_dumb_terminal(self.term): + return False + try: + return self.stdout.isatty() + except ValueError: + return False # ValueError: I/O operation on closed file + + def bell(self) -> None: + "Sound bell." + if self.enable_bell: + self.write_raw("\a") + self.flush() + + def get_default_color_depth(self) -> ColorDepth: + """ + Return the default color depth for a vt100 terminal, according to the + our term value. + + We prefer 256 colors almost always, because this is what most terminals + support these days, and is a good default. + """ + if self.default_color_depth is not None: + return self.default_color_depth + + term = self.term + + if term is None: + return ColorDepth.DEFAULT + + if is_dumb_terminal(term): + return ColorDepth.DEPTH_1_BIT + + if term in ("linux", "eterm-color"): + return ColorDepth.DEPTH_4_BIT + + return ColorDepth.DEFAULT diff --git a/src/prompt_toolkit/output/win32.py b/src/prompt_toolkit/output/win32.py new file mode 100644 index 0000000..edeca09 --- /dev/null +++ b/src/prompt_toolkit/output/win32.py @@ -0,0 +1,683 @@ +from __future__ import annotations + +import sys + +assert sys.platform == "win32" + +import os +from ctypes import ArgumentError, byref, c_char, c_long, c_uint, c_ulong, pointer +from ctypes.wintypes import DWORD, HANDLE +from typing import Callable, TextIO, TypeVar + +from prompt_toolkit.cursor_shapes import CursorShape +from prompt_toolkit.data_structures import Size +from prompt_toolkit.styles import ANSI_COLOR_NAMES, Attrs +from prompt_toolkit.utils import get_cwidth +from prompt_toolkit.win32_types import ( + CONSOLE_SCREEN_BUFFER_INFO, + COORD, + SMALL_RECT, + STD_INPUT_HANDLE, + STD_OUTPUT_HANDLE, +) + +from ..utils import SPHINX_AUTODOC_RUNNING +from .base import Output +from .color_depth import ColorDepth + +# Do not import win32-specific stuff when generating documentation. +# Otherwise RTD would be unable to generate docs for this module. +if not SPHINX_AUTODOC_RUNNING: + from ctypes import windll + + +__all__ = [ + "Win32Output", +] + + +def _coord_byval(coord: COORD) -> c_long: + """ + Turns a COORD object into a c_long. + This will cause it to be passed by value instead of by reference. (That is what I think at least.) + + When running ``ptipython`` is run (only with IPython), we often got the following error:: + + Error in 'SetConsoleCursorPosition'. + ArgumentError("argument 2: <class 'TypeError'>: wrong type",) + argument 2: <class 'TypeError'>: wrong type + + It was solved by turning ``COORD`` parameters into a ``c_long`` like this. + + More info: http://msdn.microsoft.com/en-us/library/windows/desktop/ms686025(v=vs.85).aspx + """ + return c_long(coord.Y * 0x10000 | coord.X & 0xFFFF) + + +#: If True: write the output of the renderer also to the following file. This +#: is very useful for debugging. (e.g.: to see that we don't write more bytes +#: than required.) +_DEBUG_RENDER_OUTPUT = False +_DEBUG_RENDER_OUTPUT_FILENAME = r"prompt-toolkit-windows-output.log" + + +class NoConsoleScreenBufferError(Exception): + """ + Raised when the application is not running inside a Windows Console, but + the user tries to instantiate Win32Output. + """ + + def __init__(self) -> None: + # Are we running in 'xterm' on Windows, like git-bash for instance? + xterm = "xterm" in os.environ.get("TERM", "") + + if xterm: + message = ( + "Found %s, while expecting a Windows console. " + 'Maybe try to run this program using "winpty" ' + "or run it in cmd.exe instead. Or otherwise, " + "in case of Cygwin, use the Python executable " + "that is compiled for Cygwin." % os.environ["TERM"] + ) + else: + message = "No Windows console found. Are you running cmd.exe?" + super().__init__(message) + + +_T = TypeVar("_T") + + +class Win32Output(Output): + """ + I/O abstraction for rendering to Windows consoles. + (cmd.exe and similar.) + """ + + def __init__( + self, + stdout: TextIO, + use_complete_width: bool = False, + default_color_depth: ColorDepth | None = None, + ) -> None: + self.use_complete_width = use_complete_width + self.default_color_depth = default_color_depth + + self._buffer: list[str] = [] + self.stdout: TextIO = stdout + self.hconsole = HANDLE(windll.kernel32.GetStdHandle(STD_OUTPUT_HANDLE)) + + self._in_alternate_screen = False + self._hidden = False + + self.color_lookup_table = ColorLookupTable() + + # Remember the default console colors. + info = self.get_win32_screen_buffer_info() + self.default_attrs = info.wAttributes if info else 15 + + if _DEBUG_RENDER_OUTPUT: + self.LOG = open(_DEBUG_RENDER_OUTPUT_FILENAME, "ab") + + def fileno(self) -> int: + "Return file descriptor." + return self.stdout.fileno() + + def encoding(self) -> str: + "Return encoding used for stdout." + return self.stdout.encoding + + def write(self, data: str) -> None: + if self._hidden: + data = " " * get_cwidth(data) + + self._buffer.append(data) + + def write_raw(self, data: str) -> None: + "For win32, there is no difference between write and write_raw." + self.write(data) + + def get_size(self) -> Size: + info = self.get_win32_screen_buffer_info() + + # We take the width of the *visible* region as the size. Not the width + # of the complete screen buffer. (Unless use_complete_width has been + # set.) + if self.use_complete_width: + width = info.dwSize.X + else: + width = info.srWindow.Right - info.srWindow.Left + + height = info.srWindow.Bottom - info.srWindow.Top + 1 + + # We avoid the right margin, windows will wrap otherwise. + maxwidth = info.dwSize.X - 1 + width = min(maxwidth, width) + + # Create `Size` object. + return Size(rows=height, columns=width) + + def _winapi(self, func: Callable[..., _T], *a: object, **kw: object) -> _T: + """ + Flush and call win API function. + """ + self.flush() + + if _DEBUG_RENDER_OUTPUT: + self.LOG.write(("%r" % func.__name__).encode("utf-8") + b"\n") + self.LOG.write( + b" " + ", ".join(["%r" % i for i in a]).encode("utf-8") + b"\n" + ) + self.LOG.write( + b" " + + ", ".join(["%r" % type(i) for i in a]).encode("utf-8") + + b"\n" + ) + self.LOG.flush() + + try: + return func(*a, **kw) + except ArgumentError as e: + if _DEBUG_RENDER_OUTPUT: + self.LOG.write((f" Error in {func.__name__!r} {e!r} {e}\n").encode()) + + raise + + def get_win32_screen_buffer_info(self) -> CONSOLE_SCREEN_BUFFER_INFO: + """ + Return Screen buffer info. + """ + # NOTE: We don't call the `GetConsoleScreenBufferInfo` API through + # `self._winapi`. Doing so causes Python to crash on certain 64bit + # Python versions. (Reproduced with 64bit Python 2.7.6, on Windows + # 10). It is not clear why. Possibly, it has to do with passing + # these objects as an argument, or through *args. + + # The Python documentation contains the following - possibly related - warning: + # ctypes does not support passing unions or structures with + # bit-fields to functions by value. While this may work on 32-bit + # x86, it's not guaranteed by the library to work in the general + # case. Unions and structures with bit-fields should always be + # passed to functions by pointer. + + # Also see: + # - https://github.com/ipython/ipython/issues/10070 + # - https://github.com/jonathanslenders/python-prompt-toolkit/issues/406 + # - https://github.com/jonathanslenders/python-prompt-toolkit/issues/86 + + self.flush() + sbinfo = CONSOLE_SCREEN_BUFFER_INFO() + success = windll.kernel32.GetConsoleScreenBufferInfo( + self.hconsole, byref(sbinfo) + ) + + # success = self._winapi(windll.kernel32.GetConsoleScreenBufferInfo, + # self.hconsole, byref(sbinfo)) + + if success: + return sbinfo + else: + raise NoConsoleScreenBufferError + + def set_title(self, title: str) -> None: + """ + Set terminal title. + """ + self._winapi(windll.kernel32.SetConsoleTitleW, title) + + def clear_title(self) -> None: + self._winapi(windll.kernel32.SetConsoleTitleW, "") + + def erase_screen(self) -> None: + start = COORD(0, 0) + sbinfo = self.get_win32_screen_buffer_info() + length = sbinfo.dwSize.X * sbinfo.dwSize.Y + + self.cursor_goto(row=0, column=0) + self._erase(start, length) + + def erase_down(self) -> None: + sbinfo = self.get_win32_screen_buffer_info() + size = sbinfo.dwSize + + start = sbinfo.dwCursorPosition + length = (size.X - size.X) + size.X * (size.Y - sbinfo.dwCursorPosition.Y) + + self._erase(start, length) + + def erase_end_of_line(self) -> None: + """""" + sbinfo = self.get_win32_screen_buffer_info() + start = sbinfo.dwCursorPosition + length = sbinfo.dwSize.X - sbinfo.dwCursorPosition.X + + self._erase(start, length) + + def _erase(self, start: COORD, length: int) -> None: + chars_written = c_ulong() + + self._winapi( + windll.kernel32.FillConsoleOutputCharacterA, + self.hconsole, + c_char(b" "), + DWORD(length), + _coord_byval(start), + byref(chars_written), + ) + + # Reset attributes. + sbinfo = self.get_win32_screen_buffer_info() + self._winapi( + windll.kernel32.FillConsoleOutputAttribute, + self.hconsole, + sbinfo.wAttributes, + length, + _coord_byval(start), + byref(chars_written), + ) + + def reset_attributes(self) -> None: + "Reset the console foreground/background color." + self._winapi( + windll.kernel32.SetConsoleTextAttribute, self.hconsole, self.default_attrs + ) + self._hidden = False + + def set_attributes(self, attrs: Attrs, color_depth: ColorDepth) -> None: + ( + fgcolor, + bgcolor, + bold, + underline, + strike, + italic, + blink, + reverse, + hidden, + ) = attrs + self._hidden = bool(hidden) + + # Start from the default attributes. + win_attrs: int = self.default_attrs + + if color_depth != ColorDepth.DEPTH_1_BIT: + # Override the last four bits: foreground color. + if fgcolor: + win_attrs = win_attrs & ~0xF + win_attrs |= self.color_lookup_table.lookup_fg_color(fgcolor) + + # Override the next four bits: background color. + if bgcolor: + win_attrs = win_attrs & ~0xF0 + win_attrs |= self.color_lookup_table.lookup_bg_color(bgcolor) + + # Reverse: swap these four bits groups. + if reverse: + win_attrs = ( + (win_attrs & ~0xFF) + | ((win_attrs & 0xF) << 4) + | ((win_attrs & 0xF0) >> 4) + ) + + self._winapi(windll.kernel32.SetConsoleTextAttribute, self.hconsole, win_attrs) + + def disable_autowrap(self) -> None: + # Not supported by Windows. + pass + + def enable_autowrap(self) -> None: + # Not supported by Windows. + pass + + def cursor_goto(self, row: int = 0, column: int = 0) -> None: + pos = COORD(X=column, Y=row) + self._winapi( + windll.kernel32.SetConsoleCursorPosition, self.hconsole, _coord_byval(pos) + ) + + def cursor_up(self, amount: int) -> None: + sr = self.get_win32_screen_buffer_info().dwCursorPosition + pos = COORD(X=sr.X, Y=sr.Y - amount) + self._winapi( + windll.kernel32.SetConsoleCursorPosition, self.hconsole, _coord_byval(pos) + ) + + def cursor_down(self, amount: int) -> None: + self.cursor_up(-amount) + + def cursor_forward(self, amount: int) -> None: + sr = self.get_win32_screen_buffer_info().dwCursorPosition + # assert sr.X + amount >= 0, 'Negative cursor position: x=%r amount=%r' % (sr.X, amount) + + pos = COORD(X=max(0, sr.X + amount), Y=sr.Y) + self._winapi( + windll.kernel32.SetConsoleCursorPosition, self.hconsole, _coord_byval(pos) + ) + + def cursor_backward(self, amount: int) -> None: + self.cursor_forward(-amount) + + def flush(self) -> None: + """ + Write to output stream and flush. + """ + if not self._buffer: + # Only flush stdout buffer. (It could be that Python still has + # something in its buffer. -- We want to be sure to print that in + # the correct color.) + self.stdout.flush() + return + + data = "".join(self._buffer) + + if _DEBUG_RENDER_OUTPUT: + self.LOG.write(("%r" % data).encode("utf-8") + b"\n") + self.LOG.flush() + + # Print characters one by one. This appears to be the best solution + # in order to avoid traces of vertical lines when the completion + # menu disappears. + for b in data: + written = DWORD() + + retval = windll.kernel32.WriteConsoleW( + self.hconsole, b, 1, byref(written), None + ) + assert retval != 0 + + self._buffer = [] + + def get_rows_below_cursor_position(self) -> int: + info = self.get_win32_screen_buffer_info() + return info.srWindow.Bottom - info.dwCursorPosition.Y + 1 + + def scroll_buffer_to_prompt(self) -> None: + """ + To be called before drawing the prompt. This should scroll the console + to left, with the cursor at the bottom (if possible). + """ + # Get current window size + info = self.get_win32_screen_buffer_info() + sr = info.srWindow + cursor_pos = info.dwCursorPosition + + result = SMALL_RECT() + + # Scroll to the left. + result.Left = 0 + result.Right = sr.Right - sr.Left + + # Scroll vertical + win_height = sr.Bottom - sr.Top + if 0 < sr.Bottom - cursor_pos.Y < win_height - 1: + # no vertical scroll if cursor already on the screen + result.Bottom = sr.Bottom + else: + result.Bottom = max(win_height, cursor_pos.Y) + result.Top = result.Bottom - win_height + + # Scroll API + self._winapi( + windll.kernel32.SetConsoleWindowInfo, self.hconsole, True, byref(result) + ) + + def enter_alternate_screen(self) -> None: + """ + Go to alternate screen buffer. + """ + if not self._in_alternate_screen: + GENERIC_READ = 0x80000000 + GENERIC_WRITE = 0x40000000 + + # Create a new console buffer and activate that one. + handle = HANDLE( + self._winapi( + windll.kernel32.CreateConsoleScreenBuffer, + GENERIC_READ | GENERIC_WRITE, + DWORD(0), + None, + DWORD(1), + None, + ) + ) + + self._winapi(windll.kernel32.SetConsoleActiveScreenBuffer, handle) + self.hconsole = handle + self._in_alternate_screen = True + + def quit_alternate_screen(self) -> None: + """ + Make stdout again the active buffer. + """ + if self._in_alternate_screen: + stdout = HANDLE( + self._winapi(windll.kernel32.GetStdHandle, STD_OUTPUT_HANDLE) + ) + self._winapi(windll.kernel32.SetConsoleActiveScreenBuffer, stdout) + self._winapi(windll.kernel32.CloseHandle, self.hconsole) + self.hconsole = stdout + self._in_alternate_screen = False + + def enable_mouse_support(self) -> None: + ENABLE_MOUSE_INPUT = 0x10 + + # This `ENABLE_QUICK_EDIT_MODE` flag needs to be cleared for mouse + # support to work, but it's possible that it was already cleared + # before. + ENABLE_QUICK_EDIT_MODE = 0x0040 + + handle = HANDLE(windll.kernel32.GetStdHandle(STD_INPUT_HANDLE)) + + original_mode = DWORD() + self._winapi(windll.kernel32.GetConsoleMode, handle, pointer(original_mode)) + self._winapi( + windll.kernel32.SetConsoleMode, + handle, + (original_mode.value | ENABLE_MOUSE_INPUT) & ~ENABLE_QUICK_EDIT_MODE, + ) + + def disable_mouse_support(self) -> None: + ENABLE_MOUSE_INPUT = 0x10 + handle = HANDLE(windll.kernel32.GetStdHandle(STD_INPUT_HANDLE)) + + original_mode = DWORD() + self._winapi(windll.kernel32.GetConsoleMode, handle, pointer(original_mode)) + self._winapi( + windll.kernel32.SetConsoleMode, + handle, + original_mode.value & ~ENABLE_MOUSE_INPUT, + ) + + def hide_cursor(self) -> None: + pass + + def show_cursor(self) -> None: + pass + + def set_cursor_shape(self, cursor_shape: CursorShape) -> None: + pass + + def reset_cursor_shape(self) -> None: + pass + + @classmethod + def win32_refresh_window(cls) -> None: + """ + Call win32 API to refresh the whole Window. + + This is sometimes necessary when the application paints background + for completion menus. When the menu disappears, it leaves traces due + to a bug in the Windows Console. Sending a repaint request solves it. + """ + # Get console handle + handle = HANDLE(windll.kernel32.GetConsoleWindow()) + + RDW_INVALIDATE = 0x0001 + windll.user32.RedrawWindow(handle, None, None, c_uint(RDW_INVALIDATE)) + + def get_default_color_depth(self) -> ColorDepth: + """ + Return the default color depth for a windows terminal. + + Contrary to the Vt100 implementation, this doesn't depend on a $TERM + variable. + """ + if self.default_color_depth is not None: + return self.default_color_depth + + return ColorDepth.DEPTH_4_BIT + + +class FOREGROUND_COLOR: + BLACK = 0x0000 + BLUE = 0x0001 + GREEN = 0x0002 + CYAN = 0x0003 + RED = 0x0004 + MAGENTA = 0x0005 + YELLOW = 0x0006 + GRAY = 0x0007 + INTENSITY = 0x0008 # Foreground color is intensified. + + +class BACKGROUND_COLOR: + BLACK = 0x0000 + BLUE = 0x0010 + GREEN = 0x0020 + CYAN = 0x0030 + RED = 0x0040 + MAGENTA = 0x0050 + YELLOW = 0x0060 + GRAY = 0x0070 + INTENSITY = 0x0080 # Background color is intensified. + + +def _create_ansi_color_dict( + color_cls: type[FOREGROUND_COLOR] | type[BACKGROUND_COLOR], +) -> dict[str, int]: + "Create a table that maps the 16 named ansi colors to their Windows code." + return { + "ansidefault": color_cls.BLACK, + "ansiblack": color_cls.BLACK, + "ansigray": color_cls.GRAY, + "ansibrightblack": color_cls.BLACK | color_cls.INTENSITY, + "ansiwhite": color_cls.GRAY | color_cls.INTENSITY, + # Low intensity. + "ansired": color_cls.RED, + "ansigreen": color_cls.GREEN, + "ansiyellow": color_cls.YELLOW, + "ansiblue": color_cls.BLUE, + "ansimagenta": color_cls.MAGENTA, + "ansicyan": color_cls.CYAN, + # High intensity. + "ansibrightred": color_cls.RED | color_cls.INTENSITY, + "ansibrightgreen": color_cls.GREEN | color_cls.INTENSITY, + "ansibrightyellow": color_cls.YELLOW | color_cls.INTENSITY, + "ansibrightblue": color_cls.BLUE | color_cls.INTENSITY, + "ansibrightmagenta": color_cls.MAGENTA | color_cls.INTENSITY, + "ansibrightcyan": color_cls.CYAN | color_cls.INTENSITY, + } + + +FG_ANSI_COLORS = _create_ansi_color_dict(FOREGROUND_COLOR) +BG_ANSI_COLORS = _create_ansi_color_dict(BACKGROUND_COLOR) + +assert set(FG_ANSI_COLORS) == set(ANSI_COLOR_NAMES) +assert set(BG_ANSI_COLORS) == set(ANSI_COLOR_NAMES) + + +class ColorLookupTable: + """ + Inspired by pygments/formatters/terminal256.py + """ + + def __init__(self) -> None: + self._win32_colors = self._build_color_table() + + # Cache (map color string to foreground and background code). + self.best_match: dict[str, tuple[int, int]] = {} + + @staticmethod + def _build_color_table() -> list[tuple[int, int, int, int, int]]: + """ + Build an RGB-to-256 color conversion table + """ + FG = FOREGROUND_COLOR + BG = BACKGROUND_COLOR + + return [ + (0x00, 0x00, 0x00, FG.BLACK, BG.BLACK), + (0x00, 0x00, 0xAA, FG.BLUE, BG.BLUE), + (0x00, 0xAA, 0x00, FG.GREEN, BG.GREEN), + (0x00, 0xAA, 0xAA, FG.CYAN, BG.CYAN), + (0xAA, 0x00, 0x00, FG.RED, BG.RED), + (0xAA, 0x00, 0xAA, FG.MAGENTA, BG.MAGENTA), + (0xAA, 0xAA, 0x00, FG.YELLOW, BG.YELLOW), + (0x88, 0x88, 0x88, FG.GRAY, BG.GRAY), + (0x44, 0x44, 0xFF, FG.BLUE | FG.INTENSITY, BG.BLUE | BG.INTENSITY), + (0x44, 0xFF, 0x44, FG.GREEN | FG.INTENSITY, BG.GREEN | BG.INTENSITY), + (0x44, 0xFF, 0xFF, FG.CYAN | FG.INTENSITY, BG.CYAN | BG.INTENSITY), + (0xFF, 0x44, 0x44, FG.RED | FG.INTENSITY, BG.RED | BG.INTENSITY), + (0xFF, 0x44, 0xFF, FG.MAGENTA | FG.INTENSITY, BG.MAGENTA | BG.INTENSITY), + (0xFF, 0xFF, 0x44, FG.YELLOW | FG.INTENSITY, BG.YELLOW | BG.INTENSITY), + (0x44, 0x44, 0x44, FG.BLACK | FG.INTENSITY, BG.BLACK | BG.INTENSITY), + (0xFF, 0xFF, 0xFF, FG.GRAY | FG.INTENSITY, BG.GRAY | BG.INTENSITY), + ] + + def _closest_color(self, r: int, g: int, b: int) -> tuple[int, int]: + distance = 257 * 257 * 3 # "infinity" (>distance from #000000 to #ffffff) + fg_match = 0 + bg_match = 0 + + for r_, g_, b_, fg_, bg_ in self._win32_colors: + rd = r - r_ + gd = g - g_ + bd = b - b_ + + d = rd * rd + gd * gd + bd * bd + + if d < distance: + fg_match = fg_ + bg_match = bg_ + distance = d + return fg_match, bg_match + + def _color_indexes(self, color: str) -> tuple[int, int]: + indexes = self.best_match.get(color, None) + if indexes is None: + try: + rgb = int(str(color), 16) + except ValueError: + rgb = 0 + + r = (rgb >> 16) & 0xFF + g = (rgb >> 8) & 0xFF + b = rgb & 0xFF + indexes = self._closest_color(r, g, b) + self.best_match[color] = indexes + return indexes + + def lookup_fg_color(self, fg_color: str) -> int: + """ + Return the color for use in the + `windll.kernel32.SetConsoleTextAttribute` API call. + + :param fg_color: Foreground as text. E.g. 'ffffff' or 'red' + """ + # Foreground. + if fg_color in FG_ANSI_COLORS: + return FG_ANSI_COLORS[fg_color] + else: + return self._color_indexes(fg_color)[0] + + def lookup_bg_color(self, bg_color: str) -> int: + """ + Return the color for use in the + `windll.kernel32.SetConsoleTextAttribute` API call. + + :param bg_color: Background as text. E.g. 'ffffff' or 'red' + """ + # Background. + if bg_color in BG_ANSI_COLORS: + return BG_ANSI_COLORS[bg_color] + else: + return self._color_indexes(bg_color)[1] diff --git a/src/prompt_toolkit/output/windows10.py b/src/prompt_toolkit/output/windows10.py new file mode 100644 index 0000000..c39f3ec --- /dev/null +++ b/src/prompt_toolkit/output/windows10.py @@ -0,0 +1,128 @@ +from __future__ import annotations + +import sys + +assert sys.platform == "win32" + +from ctypes import byref, windll +from ctypes.wintypes import DWORD, HANDLE +from typing import Any, TextIO + +from prompt_toolkit.data_structures import Size +from prompt_toolkit.win32_types import STD_OUTPUT_HANDLE + +from .base import Output +from .color_depth import ColorDepth +from .vt100 import Vt100_Output +from .win32 import Win32Output + +__all__ = [ + "Windows10_Output", +] + +# See: https://msdn.microsoft.com/pl-pl/library/windows/desktop/ms686033(v=vs.85).aspx +ENABLE_PROCESSED_INPUT = 0x0001 +ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x0004 + + +class Windows10_Output: + """ + Windows 10 output abstraction. This enables and uses vt100 escape sequences. + """ + + def __init__( + self, stdout: TextIO, default_color_depth: ColorDepth | None = None + ) -> None: + self.default_color_depth = default_color_depth + self.win32_output = Win32Output(stdout, default_color_depth=default_color_depth) + self.vt100_output = Vt100_Output( + stdout, lambda: Size(0, 0), default_color_depth=default_color_depth + ) + self._hconsole = HANDLE(windll.kernel32.GetStdHandle(STD_OUTPUT_HANDLE)) + + def flush(self) -> None: + """ + Write to output stream and flush. + """ + original_mode = DWORD(0) + + # Remember the previous console mode. + windll.kernel32.GetConsoleMode(self._hconsole, byref(original_mode)) + + # Enable processing of vt100 sequences. + windll.kernel32.SetConsoleMode( + self._hconsole, + DWORD(ENABLE_PROCESSED_INPUT | ENABLE_VIRTUAL_TERMINAL_PROCESSING), + ) + + try: + self.vt100_output.flush() + finally: + # Restore console mode. + windll.kernel32.SetConsoleMode(self._hconsole, original_mode) + + @property + def responds_to_cpr(self) -> bool: + return False # We don't need this on Windows. + + def __getattr__(self, name: str) -> Any: + if name in ( + "get_size", + "get_rows_below_cursor_position", + "enable_mouse_support", + "disable_mouse_support", + "scroll_buffer_to_prompt", + "get_win32_screen_buffer_info", + "enable_bracketed_paste", + "disable_bracketed_paste", + ): + return getattr(self.win32_output, name) + else: + return getattr(self.vt100_output, name) + + def get_default_color_depth(self) -> ColorDepth: + """ + Return the default color depth for a windows terminal. + + Contrary to the Vt100 implementation, this doesn't depend on a $TERM + variable. + """ + if self.default_color_depth is not None: + return self.default_color_depth + + # Previously, we used `DEPTH_4_BIT`, even on Windows 10. This was + # because true color support was added after "Console Virtual Terminal + # Sequences" support was added, and there was no good way to detect + # what support was given. + # 24bit color support was added in 2016, so let's assume it's safe to + # take that as a default: + # https://devblogs.microsoft.com/commandline/24-bit-color-in-the-windows-console/ + return ColorDepth.TRUE_COLOR + + +Output.register(Windows10_Output) + + +def is_win_vt100_enabled() -> bool: + """ + Returns True when we're running Windows and VT100 escape sequences are + supported. + """ + if sys.platform != "win32": + return False + + hconsole = HANDLE(windll.kernel32.GetStdHandle(STD_OUTPUT_HANDLE)) + + # Get original console mode. + original_mode = DWORD(0) + windll.kernel32.GetConsoleMode(hconsole, byref(original_mode)) + + try: + # Try to enable VT100 sequences. + result: int = windll.kernel32.SetConsoleMode( + hconsole, DWORD(ENABLE_PROCESSED_INPUT | ENABLE_VIRTUAL_TERMINAL_PROCESSING) + ) + + return result == 1 + finally: + windll.kernel32.SetConsoleMode(hconsole, original_mode) |