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#!/usr/bin/env python
#########################################################################
#
# Copyright 2011-2012 Jose Fonseca
# Copyright 2008-2009 VMware, Inc.
# All Rights Reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
##########################################################################/
import platform
import subprocess
import sys
class PlainHighlighter:
'''Plain highlighter.'''
black = None
red = None
green = None
yellow = None
blue = None
magenta = None
cyan = None
white = None
def __init__(self, stream = sys.stdout):
self.stream = stream
def write(self, text):
self.stream.write(text)
def flush(self):
self.stream.flush()
def normal(self):
pass
def color(self, color):
pass
def bold(self, enable = True):
pass
def strike(self):
pass
def italic(self):
pass
class AnsiHighlighter(PlainHighlighter):
'''Highlighter for plain-text files which outputs ANSI escape codes. See
http://en.wikipedia.org/wiki/ANSI_escape_code for more information
concerning ANSI escape codes.
'''
_csi = '\33['
_normal = '0m'
_italic = '3m'
black = 0
red = 1
green = 2
yellow = 3
blue = 4
magenta = 5
cyan = 6
white = 7
def __init__(self, stream = sys.stdout):
PlainHighlighter.__init__(self, stream)
def _escape(self, code):
self.stream.write(self._csi + code)
def normal(self):
self._escape(self._normal)
def color(self, color):
self._escape(str(30 + color) + 'm')
def bold(self, enable = True):
if enable:
self._escape('1m')
else:
self._escape('21m')
def strike(self):
self._escape('9m')
def italic(self):
self._escape(self._italic)
class WindowsConsoleHighlighter(PlainHighlighter):
'''Highlighter for the Windows Console. See
http://code.activestate.com/recipes/496901/ for more information.
'''
INVALID_HANDLE_VALUE = -1
STD_INPUT_HANDLE = -10
STD_OUTPUT_HANDLE = -11
STD_ERROR_HANDLE = -12
FOREGROUND_BLUE = 0x01
FOREGROUND_GREEN = 0x02
FOREGROUND_RED = 0x04
FOREGROUND_INTENSITY = 0x08
BACKGROUND_BLUE = 0x10
BACKGROUND_GREEN = 0x20
BACKGROUND_RED = 0x40
BACKGROUND_INTENSITY = 0x80
COMMON_LVB_LEADING_BYTE = 0x0100
COMMON_LVB_TRAILING_BYTE = 0x0200
COMMON_LVB_GRID_HORIZONTAL = 0x0400
COMMON_LVB_GRID_LVERTICAL = 0x0800
COMMON_LVB_GRID_RVERTICAL = 0x1000
COMMON_LVB_REVERSE_VIDEO = 0x4000
COMMON_LVB_UNDERSCORE = 0x8000
_normal = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED
_italic = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED
black = 0
red = FOREGROUND_RED
green = FOREGROUND_GREEN
blue = FOREGROUND_BLUE
white = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED
def __init__(self, stream = sys.stdout):
PlainHighlighter.__init__(self, stream)
if stream is sys.stdin:
nStdHandle = self.STD_INPUT_HANDLE
elif stream is sys.stdout:
nStdHandle = self.STD_OUTPUT_HANDLE
elif stream is sys.stderr:
nStdHandle = self.STD_ERROR_HANDLE
else:
nStdHandle = None
if nStdHandle is not None:
import ctypes
self._handle = ctypes.windll.kernel32.GetStdHandle(nStdHandle)
else:
self._handle = self.INVALID_HANDLE_VALUE
self._attribute = self.white
def _setAttribute(self, attr):
if self._handle != self.INVALID_HANDLE_VALUE:
import ctypes
ctypes.windll.kernel32.SetConsoleTextAttribute(self._handle, attr)
self._attribute = attr
def normal(self):
self._setAttribute(self._normal)
def color(self, color):
intensity = self._attribute & self.FOREGROUND_INTENSITY
self._setAttribute(color | intensity)
def bold(self, enable = True):
if enable:
attribute = self._attribute | self.FOREGROUND_INTENSITY
else:
attribute = self._attribute & ~self.FOREGROUND_INTENSITY
self._setAttribute(attribute)
def italic(self):
pass
if platform.system() == 'Windows':
ColorHighlighter = WindowsConsoleHighlighter
else:
ColorHighlighter = AnsiHighlighter
def AutoHighlighter(stream = sys.stdout):
if stream.isatty():
return ColorHighlighter(stream)
else:
return PlainHighlighter(stream)
class _LessHighlighter(AnsiHighlighter):
def __init__(self, less):
AnsiHighlighter.__init__(self, less.stdin)
self.less = less
def __del__(self):
self.less.stdin.close()
self.less.wait()
def LessHighlighter():
if sys.stdout.isatty():
try:
less = subprocess.Popen(
args = ['less', '-FRXn'],
stdin = subprocess.PIPE
)
except OSError:
return ColorHighlighter()
else:
return _LessHighlighter(less)
return PlainHighlighter(sys.stdout)
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