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566 lines
19 KiB
566 lines
19 KiB
from __future__ import unicode_literals
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from ctypes import windll, byref, ArgumentError, c_char, c_long, c_ulong, c_uint, pointer
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from ctypes.wintypes import DWORD
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from prompt_toolkit.renderer import Output
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from prompt_toolkit.styles import ANSI_COLOR_NAMES
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from prompt_toolkit.utils import get_cwidth
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from prompt_toolkit.win32_types import CONSOLE_SCREEN_BUFFER_INFO, STD_OUTPUT_HANDLE, STD_INPUT_HANDLE, COORD, SMALL_RECT
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from .color_depth import ColorDepth
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import os
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import six
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__all__ = [
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'Win32Output',
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]
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def _coord_byval(coord):
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"""
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Turns a COORD object into a c_long.
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This will cause it to be passed by value instead of by reference. (That is what I think at least.)
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When running ``ptipython`` is run (only with IPython), we often got the following error::
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Error in 'SetConsoleCursorPosition'.
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ArgumentError("argument 2: <class 'TypeError'>: wrong type",)
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argument 2: <class 'TypeError'>: wrong type
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It was solved by turning ``COORD`` parameters into a ``c_long`` like this.
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More info: http://msdn.microsoft.com/en-us/library/windows/desktop/ms686025(v=vs.85).aspx
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"""
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return c_long(coord.Y * 0x10000 | coord.X & 0xFFFF)
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#: If True: write the output of the renderer also to the following file. This
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#: is very useful for debugging. (e.g.: to see that we don't write more bytes
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#: than required.)
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_DEBUG_RENDER_OUTPUT = False
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_DEBUG_RENDER_OUTPUT_FILENAME = r'prompt-toolkit-windows-output.log'
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class NoConsoleScreenBufferError(Exception):
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"""
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Raised when the application is not running inside a Windows Console, but
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the user tries to instantiate Win32Output.
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"""
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def __init__(self):
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# Are we running in 'xterm' on Windows, like git-bash for instance?
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xterm = 'xterm' in os.environ.get('TERM', '')
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if xterm:
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message = ('Found %s, while expecting a Windows console. '
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'Maybe try to run this program using "winpty" '
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'or run it in cmd.exe instead. Or otherwise, '
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'in case of Cygwin, use the Python executable '
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'that is compiled for Cygwin.' % os.environ['TERM'])
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else:
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message = 'No Windows console found. Are you running cmd.exe?'
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super(NoConsoleScreenBufferError, self).__init__(message)
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class Win32Output(Output):
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"""
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I/O abstraction for rendering to Windows consoles.
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(cmd.exe and similar.)
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"""
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def __init__(self, stdout, use_complete_width=False):
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self.use_complete_width = use_complete_width
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self._buffer = []
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self.stdout = stdout
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self.hconsole = windll.kernel32.GetStdHandle(STD_OUTPUT_HANDLE)
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self._in_alternate_screen = False
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self._hidden = False
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self.color_lookup_table = ColorLookupTable()
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# Remember the default console colors.
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info = self.get_win32_screen_buffer_info()
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self.default_attrs = info.wAttributes if info else 15
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if _DEBUG_RENDER_OUTPUT:
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self.LOG = open(_DEBUG_RENDER_OUTPUT_FILENAME, 'ab')
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def fileno(self):
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" Return file descriptor. "
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return self.stdout.fileno()
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def encoding(self):
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" Return encoding used for stdout. "
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return self.stdout.encoding
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def write(self, data):
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if self._hidden:
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data = ' ' * get_cwidth(data)
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self._buffer.append(data)
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def write_raw(self, data):
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" For win32, there is no difference between write and write_raw. "
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self.write(data)
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def get_size(self):
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from prompt_toolkit.layout.screen import Size
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info = self.get_win32_screen_buffer_info()
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# We take the width of the *visible* region as the size. Not the width
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# of the complete screen buffer. (Unless use_complete_width has been
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# set.)
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if self.use_complete_width:
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width = info.dwSize.X
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else:
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width = info.srWindow.Right - info.srWindow.Left
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height = info.srWindow.Bottom - info.srWindow.Top + 1
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# We avoid the right margin, windows will wrap otherwise.
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maxwidth = info.dwSize.X - 1
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width = min(maxwidth, width)
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# Create `Size` object.
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return Size(rows=height, columns=width)
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def _winapi(self, func, *a, **kw):
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"""
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Flush and call win API function.
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"""
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self.flush()
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if _DEBUG_RENDER_OUTPUT:
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self.LOG.write(('%r' % func.__name__).encode('utf-8') + b'\n')
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self.LOG.write(b' ' + ', '.join(['%r' % i for i in a]).encode('utf-8') + b'\n')
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self.LOG.write(b' ' + ', '.join(['%r' % type(i) for i in a]).encode('utf-8') + b'\n')
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self.LOG.flush()
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try:
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return func(*a, **kw)
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except ArgumentError as e:
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if _DEBUG_RENDER_OUTPUT:
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self.LOG.write((' Error in %r %r %s\n' % (func.__name__, e, e)).encode('utf-8'))
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def get_win32_screen_buffer_info(self):
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"""
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Return Screen buffer info.
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"""
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# NOTE: We don't call the `GetConsoleScreenBufferInfo` API through
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# `self._winapi`. Doing so causes Python to crash on certain 64bit
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# Python versions. (Reproduced with 64bit Python 2.7.6, on Windows
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# 10). It is not clear why. Possibly, it has to do with passing
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# these objects as an argument, or through *args.
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# The Python documentation contains the following - possibly related - warning:
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# ctypes does not support passing unions or structures with
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# bit-fields to functions by value. While this may work on 32-bit
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# x86, it's not guaranteed by the library to work in the general
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# case. Unions and structures with bit-fields should always be
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# passed to functions by pointer.
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# Also see:
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# - https://github.com/ipython/ipython/issues/10070
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# - https://github.com/jonathanslenders/python-prompt-toolkit/issues/406
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# - https://github.com/jonathanslenders/python-prompt-toolkit/issues/86
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self.flush()
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sbinfo = CONSOLE_SCREEN_BUFFER_INFO()
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success = windll.kernel32.GetConsoleScreenBufferInfo(self.hconsole, byref(sbinfo))
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# success = self._winapi(windll.kernel32.GetConsoleScreenBufferInfo,
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# self.hconsole, byref(sbinfo))
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if success:
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return sbinfo
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else:
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raise NoConsoleScreenBufferError
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def set_title(self, title):
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"""
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Set terminal title.
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"""
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assert isinstance(title, six.text_type)
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self._winapi(windll.kernel32.SetConsoleTitleW, title)
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def clear_title(self):
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self._winapi(windll.kernel32.SetConsoleTitleW, '')
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def erase_screen(self):
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start = COORD(0, 0)
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sbinfo = self.get_win32_screen_buffer_info()
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length = sbinfo.dwSize.X * sbinfo.dwSize.Y
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self.cursor_goto(row=0, column=0)
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self._erase(start, length)
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def erase_down(self):
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sbinfo = self.get_win32_screen_buffer_info()
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size = sbinfo.dwSize
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start = sbinfo.dwCursorPosition
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length = ((size.X - size.X) + size.X * (size.Y - sbinfo.dwCursorPosition.Y))
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self._erase(start, length)
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def erase_end_of_line(self):
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"""
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"""
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sbinfo = self.get_win32_screen_buffer_info()
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start = sbinfo.dwCursorPosition
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length = sbinfo.dwSize.X - sbinfo.dwCursorPosition.X
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self._erase(start, length)
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def _erase(self, start, length):
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chars_written = c_ulong()
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self._winapi(windll.kernel32.FillConsoleOutputCharacterA,
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self.hconsole, c_char(b' '), DWORD(length), _coord_byval(start),
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byref(chars_written))
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# Reset attributes.
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sbinfo = self.get_win32_screen_buffer_info()
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self._winapi(windll.kernel32.FillConsoleOutputAttribute,
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self.hconsole, sbinfo.wAttributes, length, _coord_byval(start),
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byref(chars_written))
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def reset_attributes(self):
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" Reset the console foreground/background color. "
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self._winapi(windll.kernel32.SetConsoleTextAttribute, self.hconsole,
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self.default_attrs)
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self._hidden = False
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def set_attributes(self, attrs, color_depth):
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fgcolor, bgcolor, bold, underline, italic, blink, reverse, self._hidden = attrs
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# Start from the default attributes.
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attrs = self.default_attrs
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if color_depth != ColorDepth.DEPTH_1_BIT:
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# Override the last four bits: foreground color.
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if fgcolor:
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attrs = attrs & ~0xf
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attrs |= self.color_lookup_table.lookup_fg_color(fgcolor)
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# Override the next four bits: background color.
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if bgcolor:
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attrs = attrs & ~0xf0
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attrs |= self.color_lookup_table.lookup_bg_color(bgcolor)
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# Reverse: swap these four bits groups.
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if reverse:
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attrs = (attrs & ~0xff) | ((attrs & 0xf) << 4) | ((attrs & 0xf0) >> 4)
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self._winapi(windll.kernel32.SetConsoleTextAttribute, self.hconsole, attrs)
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def disable_autowrap(self):
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# Not supported by Windows.
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pass
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def enable_autowrap(self):
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# Not supported by Windows.
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pass
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def cursor_goto(self, row=0, column=0):
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pos = COORD(x=column, y=row)
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self._winapi(windll.kernel32.SetConsoleCursorPosition, self.hconsole, _coord_byval(pos))
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def cursor_up(self, amount):
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sr = self.get_win32_screen_buffer_info().dwCursorPosition
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pos = COORD(sr.X, sr.Y - amount)
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self._winapi(windll.kernel32.SetConsoleCursorPosition, self.hconsole, _coord_byval(pos))
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def cursor_down(self, amount):
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self.cursor_up(-amount)
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def cursor_forward(self, amount):
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sr = self.get_win32_screen_buffer_info().dwCursorPosition
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# assert sr.X + amount >= 0, 'Negative cursor position: x=%r amount=%r' % (sr.X, amount)
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pos = COORD(max(0, sr.X + amount), sr.Y)
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self._winapi(windll.kernel32.SetConsoleCursorPosition, self.hconsole, _coord_byval(pos))
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def cursor_backward(self, amount):
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self.cursor_forward(-amount)
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def flush(self):
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"""
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Write to output stream and flush.
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"""
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if not self._buffer:
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# Only flush stdout buffer. (It could be that Python still has
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# something in its buffer. -- We want to be sure to print that in
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# the correct color.)
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self.stdout.flush()
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return
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data = ''.join(self._buffer)
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if _DEBUG_RENDER_OUTPUT:
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self.LOG.write(('%r' % data).encode('utf-8') + b'\n')
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self.LOG.flush()
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# Print characters one by one. This appears to be the best solution
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# in oder to avoid traces of vertical lines when the completion
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# menu disappears.
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for b in data:
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written = DWORD()
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retval = windll.kernel32.WriteConsoleW(self.hconsole, b, 1, byref(written), None)
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assert retval != 0
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self._buffer = []
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def get_rows_below_cursor_position(self):
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info = self.get_win32_screen_buffer_info()
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return info.srWindow.Bottom - info.dwCursorPosition.Y + 1
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def scroll_buffer_to_prompt(self):
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"""
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To be called before drawing the prompt. This should scroll the console
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to left, with the cursor at the bottom (if possible).
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"""
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# Get current window size
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info = self.get_win32_screen_buffer_info()
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sr = info.srWindow
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cursor_pos = info.dwCursorPosition
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result = SMALL_RECT()
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# Scroll to the left.
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result.Left = 0
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result.Right = sr.Right - sr.Left
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# Scroll vertical
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win_height = sr.Bottom - sr.Top
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if 0 < sr.Bottom - cursor_pos.Y < win_height - 1:
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# no vertical scroll if cursor already on the screen
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result.Bottom = sr.Bottom
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else:
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result.Bottom = max(win_height, cursor_pos.Y)
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result.Top = result.Bottom - win_height
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# Scroll API
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self._winapi(windll.kernel32.SetConsoleWindowInfo, self.hconsole, True, byref(result))
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def enter_alternate_screen(self):
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"""
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Go to alternate screen buffer.
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"""
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if not self._in_alternate_screen:
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GENERIC_READ = 0x80000000
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GENERIC_WRITE = 0x40000000
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# Create a new console buffer and activate that one.
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handle = self._winapi(windll.kernel32.CreateConsoleScreenBuffer, GENERIC_READ|GENERIC_WRITE,
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DWORD(0), None, DWORD(1), None)
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self._winapi(windll.kernel32.SetConsoleActiveScreenBuffer, handle)
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self.hconsole = handle
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self._in_alternate_screen = True
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def quit_alternate_screen(self):
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"""
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Make stdout again the active buffer.
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"""
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if self._in_alternate_screen:
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stdout = self._winapi(windll.kernel32.GetStdHandle, STD_OUTPUT_HANDLE)
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self._winapi(windll.kernel32.SetConsoleActiveScreenBuffer, stdout)
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self._winapi(windll.kernel32.CloseHandle, self.hconsole)
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self.hconsole = stdout
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self._in_alternate_screen = False
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def enable_mouse_support(self):
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ENABLE_MOUSE_INPUT = 0x10
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handle = windll.kernel32.GetStdHandle(STD_INPUT_HANDLE)
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original_mode = DWORD()
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self._winapi(windll.kernel32.GetConsoleMode, handle, pointer(original_mode))
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self._winapi(windll.kernel32.SetConsoleMode, handle, original_mode.value | ENABLE_MOUSE_INPUT)
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def disable_mouse_support(self):
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ENABLE_MOUSE_INPUT = 0x10
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handle = windll.kernel32.GetStdHandle(STD_INPUT_HANDLE)
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original_mode = DWORD()
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self._winapi(windll.kernel32.GetConsoleMode, handle, pointer(original_mode))
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self._winapi(windll.kernel32.SetConsoleMode, handle, original_mode.value & ~ ENABLE_MOUSE_INPUT)
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def hide_cursor(self):
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pass
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def show_cursor(self):
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pass
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@classmethod
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def win32_refresh_window(cls):
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"""
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Call win32 API to refresh the whole Window.
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This is sometimes necessary when the application paints background
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for completion menus. When the menu disappears, it leaves traces due
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to a bug in the Windows Console. Sending a repaint request solves it.
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"""
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# Get console handle
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handle = windll.kernel32.GetConsoleWindow()
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RDW_INVALIDATE = 0x0001
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windll.user32.RedrawWindow(handle, None, None, c_uint(RDW_INVALIDATE))
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class FOREGROUND_COLOR:
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BLACK = 0x0000
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BLUE = 0x0001
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GREEN = 0x0002
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CYAN = 0x0003
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RED = 0x0004
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MAGENTA = 0x0005
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YELLOW = 0x0006
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GRAY = 0x0007
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INTENSITY = 0x0008 # Foreground color is intensified.
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class BACKGROUND_COLOR:
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BLACK = 0x0000
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BLUE = 0x0010
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GREEN = 0x0020
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CYAN = 0x0030
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RED = 0x0040
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MAGENTA = 0x0050
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YELLOW = 0x0060
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GRAY = 0x0070
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INTENSITY = 0x0080 # Background color is intensified.
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|
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def _create_ansi_color_dict(color_cls):
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" Create a table that maps the 16 named ansi colors to their Windows code. "
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return {
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'ansidefault': color_cls.BLACK,
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'ansiblack': color_cls.BLACK,
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'ansigray': color_cls.GRAY,
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'ansibrightblack': color_cls.BLACK | color_cls.INTENSITY,
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'ansiwhite': color_cls.GRAY | color_cls.INTENSITY,
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|
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# Low intensity.
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'ansired': color_cls.RED,
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'ansigreen': color_cls.GREEN,
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'ansiyellow': color_cls.YELLOW,
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'ansiblue': color_cls.BLUE,
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'ansimagenta': color_cls.MAGENTA,
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'ansicyan': color_cls.CYAN,
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# High intensity.
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'ansibrightred': color_cls.RED | color_cls.INTENSITY,
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'ansibrightgreen': color_cls.GREEN | color_cls.INTENSITY,
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'ansibrightyellow': color_cls.YELLOW | color_cls.INTENSITY,
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'ansibrightblue': color_cls.BLUE | color_cls.INTENSITY,
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'ansibrightmagenta': color_cls.MAGENTA | color_cls.INTENSITY,
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'ansibrightcyan': color_cls.CYAN | color_cls.INTENSITY,
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}
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FG_ANSI_COLORS = _create_ansi_color_dict(FOREGROUND_COLOR)
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BG_ANSI_COLORS = _create_ansi_color_dict(BACKGROUND_COLOR)
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assert set(FG_ANSI_COLORS) == set(ANSI_COLOR_NAMES)
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assert set(BG_ANSI_COLORS) == set(ANSI_COLOR_NAMES)
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|
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class ColorLookupTable(object):
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"""
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|
Inspired by pygments/formatters/terminal256.py
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|
"""
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|
def __init__(self):
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self._win32_colors = self._build_color_table()
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self.best_match = {} # Cache
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|
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@staticmethod
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def _build_color_table():
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"""
|
|
Build an RGB-to-256 color conversion table
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"""
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FG = FOREGROUND_COLOR
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BG = BACKGROUND_COLOR
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|
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return [
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(0x00, 0x00, 0x00, FG.BLACK, BG.BLACK),
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(0x00, 0x00, 0xaa, FG.BLUE, BG.BLUE),
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(0x00, 0xaa, 0x00, FG.GREEN, BG.GREEN),
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(0x00, 0xaa, 0xaa, FG.CYAN, BG.CYAN),
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(0xaa, 0x00, 0x00, FG.RED, BG.RED),
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(0xaa, 0x00, 0xaa, FG.MAGENTA, BG.MAGENTA),
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|
(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, g, b):
|
|
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):
|
|
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):
|
|
"""
|
|
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):
|
|
"""
|
|
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]
|