mirror of
https://gitlab.com/ita1024/waf.git
synced 2024-11-17 15:39:59 +01:00
335 lines
10 KiB
Python
335 lines
10 KiB
Python
#!/usr/bin/env python
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# encoding: utf-8
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"""
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Emulate a vt100 terminal in cmd.exe
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By wrapping sys.stdout / sys.stderr with Ansiterm,
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the vt100 escape characters will be interpreted and
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the equivalent actions will be performed with Win32
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console commands.
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"""
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import re, sys
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from waflib.Utils import threading
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wlock = threading.Lock()
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try:
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from ctypes import Structure, windll, c_short, c_ushort, c_ulong, c_int, byref, c_wchar, POINTER, c_long
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except ImportError:
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class AnsiTerm(object):
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def __init__(self, stream):
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self.stream = stream
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self.encoding = self.stream.encoding
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def write(self, txt):
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try:
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wlock.acquire()
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self.stream.write(txt)
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self.stream.flush()
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finally:
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wlock.release()
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def fileno(self):
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return self.stream.fileno()
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def flush(self):
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self.stream.flush()
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def isatty(self):
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return self.stream.isatty()
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else:
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class COORD(Structure):
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_fields_ = [("X", c_short), ("Y", c_short)]
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class SMALL_RECT(Structure):
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_fields_ = [("Left", c_short), ("Top", c_short), ("Right", c_short), ("Bottom", c_short)]
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class CONSOLE_SCREEN_BUFFER_INFO(Structure):
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_fields_ = [("Size", COORD), ("CursorPosition", COORD), ("Attributes", c_ushort), ("Window", SMALL_RECT), ("MaximumWindowSize", COORD)]
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class CONSOLE_CURSOR_INFO(Structure):
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_fields_ = [('dwSize', c_ulong), ('bVisible', c_int)]
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try:
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_type = unicode
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except NameError:
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_type = str
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to_int = lambda number, default: number and int(number) or default
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STD_OUTPUT_HANDLE = -11
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STD_ERROR_HANDLE = -12
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windll.kernel32.GetStdHandle.argtypes = [c_ulong]
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windll.kernel32.GetStdHandle.restype = c_ulong
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windll.kernel32.GetConsoleScreenBufferInfo.argtypes = [c_ulong, POINTER(CONSOLE_SCREEN_BUFFER_INFO)]
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windll.kernel32.GetConsoleScreenBufferInfo.restype = c_long
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windll.kernel32.SetConsoleTextAttribute.argtypes = [c_ulong, c_ushort]
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windll.kernel32.SetConsoleTextAttribute.restype = c_long
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windll.kernel32.FillConsoleOutputCharacterW.argtypes = [c_ulong, c_wchar, c_ulong, POINTER(COORD), POINTER(c_ulong)]
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windll.kernel32.FillConsoleOutputCharacterW.restype = c_long
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windll.kernel32.FillConsoleOutputAttribute.argtypes = [c_ulong, c_ushort, c_ulong, POINTER(COORD), POINTER(c_ulong) ]
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windll.kernel32.FillConsoleOutputAttribute.restype = c_long
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windll.kernel32.SetConsoleCursorPosition.argtypes = [c_ulong, POINTER(COORD) ]
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windll.kernel32.SetConsoleCursorPosition.restype = c_long
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windll.kernel32.SetConsoleCursorInfo.argtypes = [c_ulong, POINTER(CONSOLE_CURSOR_INFO)]
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windll.kernel32.SetConsoleCursorInfo.restype = c_long
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class AnsiTerm(object):
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"""
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emulate a vt100 terminal in cmd.exe
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"""
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def __init__(self, s):
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self.stream = s
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self.encoding = s.encoding
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self.cursor_history = []
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handle = (s.fileno() == 2) and STD_ERROR_HANDLE or STD_OUTPUT_HANDLE
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self.hconsole = windll.kernel32.GetStdHandle(handle)
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self._sbinfo = CONSOLE_SCREEN_BUFFER_INFO()
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self._csinfo = CONSOLE_CURSOR_INFO()
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windll.kernel32.GetConsoleCursorInfo(self.hconsole, byref(self._csinfo))
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# just to double check that the console is usable
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self._orig_sbinfo = CONSOLE_SCREEN_BUFFER_INFO()
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r = windll.kernel32.GetConsoleScreenBufferInfo(self.hconsole, byref(self._orig_sbinfo))
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self._isatty = r == 1
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def screen_buffer_info(self):
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"""
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Updates self._sbinfo and returns it
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"""
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windll.kernel32.GetConsoleScreenBufferInfo(self.hconsole, byref(self._sbinfo))
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return self._sbinfo
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def clear_line(self, param):
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mode = param and int(param) or 0
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sbinfo = self.screen_buffer_info()
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if mode == 1: # Clear from begining of line to cursor position
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line_start = COORD(0, sbinfo.CursorPosition.Y)
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line_length = sbinfo.Size.X
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elif mode == 2: # Clear entire line
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line_start = COORD(sbinfo.CursorPosition.X, sbinfo.CursorPosition.Y)
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line_length = sbinfo.Size.X - sbinfo.CursorPosition.X
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else: # Clear from cursor position to end of line
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line_start = sbinfo.CursorPosition
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line_length = sbinfo.Size.X - sbinfo.CursorPosition.X
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chars_written = c_ulong()
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windll.kernel32.FillConsoleOutputCharacterW(self.hconsole, c_wchar(' '), line_length, line_start, byref(chars_written))
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windll.kernel32.FillConsoleOutputAttribute(self.hconsole, sbinfo.Attributes, line_length, line_start, byref(chars_written))
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def clear_screen(self, param):
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mode = to_int(param, 0)
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sbinfo = self.screen_buffer_info()
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if mode == 1: # Clear from begining of screen to cursor position
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clear_start = COORD(0, 0)
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clear_length = sbinfo.CursorPosition.X * sbinfo.CursorPosition.Y
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elif mode == 2: # Clear entire screen and return cursor to home
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clear_start = COORD(0, 0)
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clear_length = sbinfo.Size.X * sbinfo.Size.Y
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windll.kernel32.SetConsoleCursorPosition(self.hconsole, clear_start)
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else: # Clear from cursor position to end of screen
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clear_start = sbinfo.CursorPosition
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clear_length = ((sbinfo.Size.X - sbinfo.CursorPosition.X) + sbinfo.Size.X * (sbinfo.Size.Y - sbinfo.CursorPosition.Y))
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chars_written = c_ulong()
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windll.kernel32.FillConsoleOutputCharacterW(self.hconsole, c_wchar(' '), clear_length, clear_start, byref(chars_written))
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windll.kernel32.FillConsoleOutputAttribute(self.hconsole, sbinfo.Attributes, clear_length, clear_start, byref(chars_written))
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def push_cursor(self, param):
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sbinfo = self.screen_buffer_info()
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self.cursor_history.append(sbinfo.CursorPosition)
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def pop_cursor(self, param):
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if self.cursor_history:
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old_pos = self.cursor_history.pop()
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windll.kernel32.SetConsoleCursorPosition(self.hconsole, old_pos)
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def set_cursor(self, param):
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y, sep, x = param.partition(';')
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x = to_int(x, 1) - 1
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y = to_int(y, 1) - 1
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sbinfo = self.screen_buffer_info()
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new_pos = COORD(
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min(max(0, x), sbinfo.Size.X),
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min(max(0, y), sbinfo.Size.Y)
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)
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windll.kernel32.SetConsoleCursorPosition(self.hconsole, new_pos)
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def set_column(self, param):
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x = to_int(param, 1) - 1
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sbinfo = self.screen_buffer_info()
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new_pos = COORD(
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min(max(0, x), sbinfo.Size.X),
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sbinfo.CursorPosition.Y
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)
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windll.kernel32.SetConsoleCursorPosition(self.hconsole, new_pos)
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def move_cursor(self, x_offset=0, y_offset=0):
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sbinfo = self.screen_buffer_info()
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new_pos = COORD(
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min(max(0, sbinfo.CursorPosition.X + x_offset), sbinfo.Size.X),
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min(max(0, sbinfo.CursorPosition.Y + y_offset), sbinfo.Size.Y)
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)
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windll.kernel32.SetConsoleCursorPosition(self.hconsole, new_pos)
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def move_up(self, param):
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self.move_cursor(y_offset = -to_int(param, 1))
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def move_down(self, param):
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self.move_cursor(y_offset = to_int(param, 1))
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def move_left(self, param):
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self.move_cursor(x_offset = -to_int(param, 1))
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def move_right(self, param):
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self.move_cursor(x_offset = to_int(param, 1))
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def next_line(self, param):
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sbinfo = self.screen_buffer_info()
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self.move_cursor(
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x_offset = -sbinfo.CursorPosition.X,
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y_offset = to_int(param, 1)
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)
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def prev_line(self, param):
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sbinfo = self.screen_buffer_info()
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self.move_cursor(
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x_offset = -sbinfo.CursorPosition.X,
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y_offset = -to_int(param, 1)
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)
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def rgb2bgr(self, c):
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return ((c&1) << 2) | (c&2) | ((c&4)>>2)
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def set_color(self, param):
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cols = param.split(';')
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sbinfo = self.screen_buffer_info()
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attr = sbinfo.Attributes
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for c in cols:
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c = to_int(c, 0)
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if 29 < c < 38: # fgcolor
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attr = (attr & 0xfff0) | self.rgb2bgr(c - 30)
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elif 39 < c < 48: # bgcolor
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attr = (attr & 0xff0f) | (self.rgb2bgr(c - 40) << 4)
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elif c == 0: # reset
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attr = self._orig_sbinfo.Attributes
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elif c == 1: # strong
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attr |= 0x08
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elif c == 4: # blink not available -> bg intensity
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attr |= 0x80
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elif c == 7: # negative
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attr = (attr & 0xff88) | ((attr & 0x70) >> 4) | ((attr & 0x07) << 4)
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windll.kernel32.SetConsoleTextAttribute(self.hconsole, attr)
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def show_cursor(self,param):
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self._csinfo.bVisible = 1
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windll.kernel32.SetConsoleCursorInfo(self.hconsole, byref(self._csinfo))
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def hide_cursor(self,param):
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self._csinfo.bVisible = 0
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windll.kernel32.SetConsoleCursorInfo(self.hconsole, byref(self._csinfo))
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ansi_command_table = {
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'A': move_up,
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'B': move_down,
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'C': move_right,
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'D': move_left,
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'E': next_line,
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'F': prev_line,
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'G': set_column,
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'H': set_cursor,
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'f': set_cursor,
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'J': clear_screen,
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'K': clear_line,
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'h': show_cursor,
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'l': hide_cursor,
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'm': set_color,
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's': push_cursor,
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'u': pop_cursor,
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}
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# Match either the escape sequence or text not containing escape sequence
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ansi_tokens = re.compile('(?:\x1b\[([0-9?;]*)([a-zA-Z])|([^\x1b]+))')
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def write(self, text):
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try:
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wlock.acquire()
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if self._isatty:
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for param, cmd, txt in self.ansi_tokens.findall(text):
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if cmd:
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cmd_func = self.ansi_command_table.get(cmd)
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if cmd_func:
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cmd_func(self, param)
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else:
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self.writeconsole(txt)
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else:
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# no support for colors in the console, just output the text:
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# eclipse or msys may be able to interpret the escape sequences
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self.stream.write(text)
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finally:
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wlock.release()
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def writeconsole(self, txt):
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chars_written = c_int()
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writeconsole = windll.kernel32.WriteConsoleA
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if isinstance(txt, _type):
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writeconsole = windll.kernel32.WriteConsoleW
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# MSDN says that there is a shared buffer of 64 KB for the console
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# writes. Attempt to not get ERROR_NOT_ENOUGH_MEMORY, see waf issue #746
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done = 0
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todo = len(txt)
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chunk = 32<<10
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while todo != 0:
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doing = min(chunk, todo)
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buf = txt[done:done+doing]
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r = writeconsole(self.hconsole, buf, doing, byref(chars_written), None)
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if r == 0:
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chunk >>= 1
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continue
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done += doing
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todo -= doing
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def fileno(self):
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return self.stream.fileno()
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def flush(self):
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pass
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def isatty(self):
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return self._isatty
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if sys.stdout.isatty() or sys.stderr.isatty():
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handle = sys.stdout.isatty() and STD_OUTPUT_HANDLE or STD_ERROR_HANDLE
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console = windll.kernel32.GetStdHandle(handle)
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sbinfo = CONSOLE_SCREEN_BUFFER_INFO()
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def get_term_cols():
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windll.kernel32.GetConsoleScreenBufferInfo(console, byref(sbinfo))
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# TODO Issue 1401
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return sbinfo.Size.X - 1
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# just try and see
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try:
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import struct, fcntl, termios
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except ImportError:
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pass
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else:
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if sys.stdout.isatty() or sys.stderr.isatty():
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FD = sys.stdout.isatty() and sys.stdout.fileno() or sys.stderr.fileno()
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def fun():
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return struct.unpack("HHHH", fcntl.ioctl(FD, termios.TIOCGWINSZ, struct.pack("HHHH", 0, 0, 0, 0)))[1]
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try:
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fun()
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except Exception as e:
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pass
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else:
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get_term_cols = fun
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