2
0
mirror of https://gitlab.com/ita1024/waf.git synced 2024-12-24 18:25:03 +01:00
waf/waflib/ansiterm.py

343 lines
11 KiB
Python

#!/usr/bin/env python
# encoding: utf-8
"""
Emulate a vt100 terminal in cmd.exe
By wrapping sys.stdout / sys.stderr with Ansiterm,
the vt100 escape characters will be interpreted and
the equivalent actions will be performed with Win32
console commands.
"""
import os, re, sys
from waflib import Utils
wlock = Utils.threading.Lock()
try:
from ctypes import Structure, windll, c_short, c_ushort, c_ulong, c_int, byref, c_wchar, POINTER, c_long
except ImportError:
class AnsiTerm(object):
def __init__(self, stream):
self.stream = stream
try:
self.errors = self.stream.errors
except AttributeError:
pass # python 2.5
self.encoding = self.stream.encoding
def write(self, txt):
try:
wlock.acquire()
self.stream.write(txt)
self.stream.flush()
finally:
wlock.release()
def fileno(self):
return self.stream.fileno()
def flush(self):
self.stream.flush()
def isatty(self):
return self.stream.isatty()
else:
class COORD(Structure):
_fields_ = [("X", c_short), ("Y", c_short)]
class SMALL_RECT(Structure):
_fields_ = [("Left", c_short), ("Top", c_short), ("Right", c_short), ("Bottom", c_short)]
class CONSOLE_SCREEN_BUFFER_INFO(Structure):
_fields_ = [("Size", COORD), ("CursorPosition", COORD), ("Attributes", c_ushort), ("Window", SMALL_RECT), ("MaximumWindowSize", COORD)]
class CONSOLE_CURSOR_INFO(Structure):
_fields_ = [('dwSize', c_ulong), ('bVisible', c_int)]
try:
_type = unicode
except NameError:
_type = str
to_int = lambda number, default: number and int(number) or default
STD_OUTPUT_HANDLE = -11
STD_ERROR_HANDLE = -12
windll.kernel32.GetStdHandle.argtypes = [c_ulong]
windll.kernel32.GetStdHandle.restype = c_ulong
windll.kernel32.GetConsoleScreenBufferInfo.argtypes = [c_ulong, POINTER(CONSOLE_SCREEN_BUFFER_INFO)]
windll.kernel32.GetConsoleScreenBufferInfo.restype = c_long
windll.kernel32.SetConsoleTextAttribute.argtypes = [c_ulong, c_ushort]
windll.kernel32.SetConsoleTextAttribute.restype = c_long
windll.kernel32.FillConsoleOutputCharacterW.argtypes = [c_ulong, c_wchar, c_ulong, POINTER(COORD), POINTER(c_ulong)]
windll.kernel32.FillConsoleOutputCharacterW.restype = c_long
windll.kernel32.FillConsoleOutputAttribute.argtypes = [c_ulong, c_ushort, c_ulong, POINTER(COORD), POINTER(c_ulong) ]
windll.kernel32.FillConsoleOutputAttribute.restype = c_long
windll.kernel32.SetConsoleCursorPosition.argtypes = [c_ulong, POINTER(COORD) ]
windll.kernel32.SetConsoleCursorPosition.restype = c_long
windll.kernel32.SetConsoleCursorInfo.argtypes = [c_ulong, POINTER(CONSOLE_CURSOR_INFO)]
windll.kernel32.SetConsoleCursorInfo.restype = c_long
class AnsiTerm(object):
"""
emulate a vt100 terminal in cmd.exe
"""
def __init__(self, s):
self.stream = s
try:
self.errors = s.errors
except AttributeError:
pass # python2.5
self.encoding = s.encoding
self.cursor_history = []
handle = (s.fileno() == 2) and STD_ERROR_HANDLE or STD_OUTPUT_HANDLE
self.hconsole = windll.kernel32.GetStdHandle(handle)
self._sbinfo = CONSOLE_SCREEN_BUFFER_INFO()
self._csinfo = CONSOLE_CURSOR_INFO()
windll.kernel32.GetConsoleCursorInfo(self.hconsole, byref(self._csinfo))
# just to double check that the console is usable
self._orig_sbinfo = CONSOLE_SCREEN_BUFFER_INFO()
r = windll.kernel32.GetConsoleScreenBufferInfo(self.hconsole, byref(self._orig_sbinfo))
self._isatty = r == 1
def screen_buffer_info(self):
"""
Updates self._sbinfo and returns it
"""
windll.kernel32.GetConsoleScreenBufferInfo(self.hconsole, byref(self._sbinfo))
return self._sbinfo
def clear_line(self, param):
mode = param and int(param) or 0
sbinfo = self.screen_buffer_info()
if mode == 1: # Clear from begining of line to cursor position
line_start = COORD(0, sbinfo.CursorPosition.Y)
line_length = sbinfo.Size.X
elif mode == 2: # Clear entire line
line_start = COORD(sbinfo.CursorPosition.X, sbinfo.CursorPosition.Y)
line_length = sbinfo.Size.X - sbinfo.CursorPosition.X
else: # Clear from cursor position to end of line
line_start = sbinfo.CursorPosition
line_length = sbinfo.Size.X - sbinfo.CursorPosition.X
chars_written = c_ulong()
windll.kernel32.FillConsoleOutputCharacterW(self.hconsole, c_wchar(' '), line_length, line_start, byref(chars_written))
windll.kernel32.FillConsoleOutputAttribute(self.hconsole, sbinfo.Attributes, line_length, line_start, byref(chars_written))
def clear_screen(self, param):
mode = to_int(param, 0)
sbinfo = self.screen_buffer_info()
if mode == 1: # Clear from begining of screen to cursor position
clear_start = COORD(0, 0)
clear_length = sbinfo.CursorPosition.X * sbinfo.CursorPosition.Y
elif mode == 2: # Clear entire screen and return cursor to home
clear_start = COORD(0, 0)
clear_length = sbinfo.Size.X * sbinfo.Size.Y
windll.kernel32.SetConsoleCursorPosition(self.hconsole, clear_start)
else: # Clear from cursor position to end of screen
clear_start = sbinfo.CursorPosition
clear_length = ((sbinfo.Size.X - sbinfo.CursorPosition.X) + sbinfo.Size.X * (sbinfo.Size.Y - sbinfo.CursorPosition.Y))
chars_written = c_ulong()
windll.kernel32.FillConsoleOutputCharacterW(self.hconsole, c_wchar(' '), clear_length, clear_start, byref(chars_written))
windll.kernel32.FillConsoleOutputAttribute(self.hconsole, sbinfo.Attributes, clear_length, clear_start, byref(chars_written))
def push_cursor(self, param):
sbinfo = self.screen_buffer_info()
self.cursor_history.append(sbinfo.CursorPosition)
def pop_cursor(self, param):
if self.cursor_history:
old_pos = self.cursor_history.pop()
windll.kernel32.SetConsoleCursorPosition(self.hconsole, old_pos)
def set_cursor(self, param):
y, sep, x = param.partition(';')
x = to_int(x, 1) - 1
y = to_int(y, 1) - 1
sbinfo = self.screen_buffer_info()
new_pos = COORD(
min(max(0, x), sbinfo.Size.X),
min(max(0, y), sbinfo.Size.Y)
)
windll.kernel32.SetConsoleCursorPosition(self.hconsole, new_pos)
def set_column(self, param):
x = to_int(param, 1) - 1
sbinfo = self.screen_buffer_info()
new_pos = COORD(
min(max(0, x), sbinfo.Size.X),
sbinfo.CursorPosition.Y
)
windll.kernel32.SetConsoleCursorPosition(self.hconsole, new_pos)
def move_cursor(self, x_offset=0, y_offset=0):
sbinfo = self.screen_buffer_info()
new_pos = COORD(
min(max(0, sbinfo.CursorPosition.X + x_offset), sbinfo.Size.X),
min(max(0, sbinfo.CursorPosition.Y + y_offset), sbinfo.Size.Y)
)
windll.kernel32.SetConsoleCursorPosition(self.hconsole, new_pos)
def move_up(self, param):
self.move_cursor(y_offset = -to_int(param, 1))
def move_down(self, param):
self.move_cursor(y_offset = to_int(param, 1))
def move_left(self, param):
self.move_cursor(x_offset = -to_int(param, 1))
def move_right(self, param):
self.move_cursor(x_offset = to_int(param, 1))
def next_line(self, param):
sbinfo = self.screen_buffer_info()
self.move_cursor(
x_offset = -sbinfo.CursorPosition.X,
y_offset = to_int(param, 1)
)
def prev_line(self, param):
sbinfo = self.screen_buffer_info()
self.move_cursor(
x_offset = -sbinfo.CursorPosition.X,
y_offset = -to_int(param, 1)
)
def rgb2bgr(self, c):
return ((c&1) << 2) | (c&2) | ((c&4)>>2)
def set_color(self, param):
cols = param.split(';')
sbinfo = self.screen_buffer_info()
attr = sbinfo.Attributes
for c in cols:
c = to_int(c, 0)
if 29 < c < 38: # fgcolor
attr = (attr & 0xfff0) | self.rgb2bgr(c - 30)
elif 39 < c < 48: # bgcolor
attr = (attr & 0xff0f) | (self.rgb2bgr(c - 40) << 4)
elif c == 0: # reset
attr = self._orig_sbinfo.Attributes
elif c == 1: # strong
attr |= 0x08
elif c == 4: # blink not available -> bg intensity
attr |= 0x80
elif c == 7: # negative
attr = (attr & 0xff88) | ((attr & 0x70) >> 4) | ((attr & 0x07) << 4)
windll.kernel32.SetConsoleTextAttribute(self.hconsole, attr)
def show_cursor(self,param):
self._csinfo.bVisible = 1
windll.kernel32.SetConsoleCursorInfo(self.hconsole, byref(self._csinfo))
def hide_cursor(self,param):
self._csinfo.bVisible = 0
windll.kernel32.SetConsoleCursorInfo(self.hconsole, byref(self._csinfo))
ansi_command_table = {
'A': move_up,
'B': move_down,
'C': move_right,
'D': move_left,
'E': next_line,
'F': prev_line,
'G': set_column,
'H': set_cursor,
'f': set_cursor,
'J': clear_screen,
'K': clear_line,
'h': show_cursor,
'l': hide_cursor,
'm': set_color,
's': push_cursor,
'u': pop_cursor,
}
# Match either the escape sequence or text not containing escape sequence
ansi_tokens = re.compile('(?:\x1b\[([0-9?;]*)([a-zA-Z])|([^\x1b]+))')
def write(self, text):
try:
wlock.acquire()
if self._isatty:
for param, cmd, txt in self.ansi_tokens.findall(text):
if cmd:
cmd_func = self.ansi_command_table.get(cmd)
if cmd_func:
cmd_func(self, param)
else:
self.writeconsole(txt)
else:
# no support for colors in the console, just output the text:
# eclipse or msys may be able to interpret the escape sequences
self.stream.write(text)
finally:
wlock.release()
def writeconsole(self, txt):
chars_written = c_ulong()
writeconsole = windll.kernel32.WriteConsoleA
if isinstance(txt, _type):
writeconsole = windll.kernel32.WriteConsoleW
# MSDN says that there is a shared buffer of 64 KB for the console
# writes. Attempt to not get ERROR_NOT_ENOUGH_MEMORY, see waf issue #746
done = 0
todo = len(txt)
chunk = 32<<10
while todo != 0:
doing = min(chunk, todo)
buf = txt[done:done+doing]
r = writeconsole(self.hconsole, buf, doing, byref(chars_written), None)
if r == 0:
chunk >>= 1
continue
done += doing
todo -= doing
def fileno(self):
return self.stream.fileno()
def flush(self):
pass
def isatty(self):
return self._isatty
if sys.stdout.isatty() or sys.stderr.isatty():
handle = sys.stdout.isatty() and STD_OUTPUT_HANDLE or STD_ERROR_HANDLE
console = windll.kernel32.GetStdHandle(handle)
sbinfo = CONSOLE_SCREEN_BUFFER_INFO()
def get_term_cols():
windll.kernel32.GetConsoleScreenBufferInfo(console, byref(sbinfo))
# TODO Issue 1401
return sbinfo.Size.X - 1
# just try and see
try:
import struct, fcntl, termios
except ImportError:
pass
else:
if (sys.stdout.isatty() or sys.stderr.isatty()) and os.environ.get('TERM', '') not in ('dumb', 'emacs'):
FD = sys.stdout.isatty() and sys.stdout.fileno() or sys.stderr.fileno()
def fun():
return struct.unpack("HHHH", fcntl.ioctl(FD, termios.TIOCGWINSZ, struct.pack("HHHH", 0, 0, 0, 0)))[1]
try:
fun()
except Exception as e:
pass
else:
get_term_cols = fun