1 ##########################################################################
3 # Copyright 2011-2012 Jose Fonseca
4 # Copyright 2008-2009 VMware, Inc.
7 # Permission is hereby granted, free of charge, to any person obtaining a copy
8 # of this software and associated documentation files (the "Software"), to deal
9 # in the Software without restriction, including without limitation the rights
10 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 # copies of the Software, and to permit persons to whom the Software is
12 # furnished to do so, subject to the following conditions:
14 # The above copyright notice and this permission notice shall be included in
15 # all copies or substantial portions of the Software.
17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
25 ##########################################################################/
33 class PlainHighlighter:
45 def __init__(self, stream = sys.stdout):
48 def write(self, text):
49 self.stream.write(text)
57 def color(self, color):
60 def bold(self, enable):
67 class AnsiHighlighter(PlainHighlighter):
68 '''Highlighter for plain-text files which outputs ANSI escape codes. See
69 http://en.wikipedia.org/wiki/ANSI_escape_code for more information
70 concerning ANSI escape codes.
87 def __init__(self, stream = sys.stdout):
88 PlainHighlighter.__init__(self, stream)
90 def _escape(self, code):
91 self.stream.write(self._csi + code)
94 self._escape(self._normal)
96 def color(self, color):
97 self._escape(str(30 + color) + 'm')
99 def bold(self, enable = True):
106 self._escape(self._italic)
109 class WindowsConsoleHighlighter(PlainHighlighter):
110 '''Highlighter for the Windows Console. See
111 http://code.activestate.com/recipes/496901/ for more information.
114 INVALID_HANDLE_VALUE = -1
115 STD_INPUT_HANDLE = -10
116 STD_OUTPUT_HANDLE = -11
117 STD_ERROR_HANDLE = -12
119 FOREGROUND_BLUE = 0x01
120 FOREGROUND_GREEN = 0x02
121 FOREGROUND_RED = 0x04
122 FOREGROUND_INTENSITY = 0x08
123 BACKGROUND_BLUE = 0x10
124 BACKGROUND_GREEN = 0x20
125 BACKGROUND_RED = 0x40
126 BACKGROUND_INTENSITY = 0x80
128 COMMON_LVB_LEADING_BYTE = 0x0100
129 COMMON_LVB_TRAILING_BYTE = 0x0200
130 COMMON_LVB_GRID_HORIZONTAL = 0x0400
131 COMMON_LVB_GRID_LVERTICAL = 0x0800
132 COMMON_LVB_GRID_RVERTICAL = 0x1000
133 COMMON_LVB_REVERSE_VIDEO = 0x4000
134 COMMON_LVB_UNDERSCORE = 0x8000
136 _normal = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED
137 _italic = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED
141 green = FOREGROUND_GREEN
142 blue = FOREGROUND_BLUE
143 white = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED
145 def __init__(self, stream = sys.stdout):
146 PlainHighlighter.__init__(self, stream)
148 if stream is sys.stdin:
149 nStdHandle = self.STD_INPUT_HANDLE
150 elif stream is sys.stdout:
151 nStdHandle = self.STD_OUTPUT_HANDLE
152 elif stream is sys.stderr:
153 nStdHandle = self.STD_ERROR_HANDLE
157 if nStdHandle is not None:
159 self._handle = ctypes.windll.kernel32.GetStdHandle(nStdHandle)
161 self._handle = self.INVALID_HANDLE_VALUE
163 self._attribute = self.white
165 def _setAttribute(self, attr):
166 if self._handle != self.INVALID_HANDLE_VALUE:
168 ctypes.windll.kernel32.SetConsoleTextAttribute(self._handle, attr)
169 self._attribute = attr
172 self._setAttribute(self._normal)
174 def color(self, color):
175 intensity = self._attribute & self.FOREGROUND_INTENSITY
176 self._setAttribute(color | intensity)
178 def bold(self, enable):
180 attribute = self._attribute | self.FOREGROUND_INTENSITY
182 attribute = self._attribute & ~self.FOREGROUND_INTENSITY
183 self._setAttribute(attribute)
189 if platform.system() == 'Windows':
190 ColorHighlighter = WindowsConsoleHighlighter
192 ColorHighlighter = AnsiHighlighter
195 def AutoHighlighter(stream = sys.stdout):
197 return ColorHighlighter(stream)
199 return PlainHighlighter(stream)
202 class _LessHighlighter(AnsiHighlighter):
204 def __init__(self, less):
205 AnsiHighlighter.__init__(self, less.stdin)
209 self.less.stdin.close()
213 def LessHighlighter():
214 if sys.stdout.isatty():
216 less = subprocess.Popen(
217 args = ['less', '-FRXn'],
218 stdin = subprocess.PIPE
221 return ColorHighlighter()
223 return _LessHighlighter(less)
224 return PlainHighlighter(sys.stdout)