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# -*- coding: utf-8 -*-
"""
Color schemes for exception handling code in IPython.
"""
#*****************************************************************************
# Copyright (C) 2005-2006 Fernando Perez <fperez@colorado.edu>
#
# Distributed under the terms of the BSD License. The full license is in
# the file COPYING, distributed as part of this software.
#*****************************************************************************
from IPython.utils.coloransi import ColorSchemeTable, TermColors, ColorScheme
def exception_colors():
"""Return a color table with fields for exception reporting.
The table is an instance of ColorSchemeTable with schemes added for
'Linux', 'LightBG' and 'NoColor' and fields for exception handling filled
in.
Examples:
>>> ec = exception_colors()
>>> ec.active_scheme_name
''
>>> print ec.active_colors
None
Now we activate a color scheme:
>>> ec.set_active_scheme('NoColor')
>>> ec.active_scheme_name
'NoColor'
>>> sorted(ec.active_colors.keys())
['Normal', 'caret', 'em', 'excName', 'filename', 'filenameEm', 'line',
'lineno', 'linenoEm', 'name', 'nameEm', 'normalEm', 'topline', 'vName',
'val', 'valEm']
"""
ex_colors = ColorSchemeTable()
# Populate it with color schemes
C = TermColors # shorthand and local lookup
ex_colors.add_scheme(ColorScheme(
'NoColor',
# The color to be used for the top line
topline = C.NoColor,
# The colors to be used in the traceback
filename = C.NoColor,
lineno = C.NoColor,
name = C.NoColor,
vName = C.NoColor,
val = C.NoColor,
em = C.NoColor,
# Emphasized colors for the last frame of the traceback
normalEm = C.NoColor,
filenameEm = C.NoColor,
linenoEm = C.NoColor,
nameEm = C.NoColor,
valEm = C.NoColor,
# Colors for printing the exception
excName = C.NoColor,
line = C.NoColor,
caret = C.NoColor,
Normal = C.NoColor
))
# make some schemes as instances so we can copy them for modification easily
ex_colors.add_scheme(ColorScheme(
'Linux',
# The color to be used for the top line
topline = C.LightRed,
# The colors to be used in the traceback
filename = C.Green,
lineno = C.Green,
name = C.Purple,
vName = C.Cyan,
val = C.Green,
em = C.LightCyan,
# Emphasized colors for the last frame of the traceback
normalEm = C.LightCyan,
filenameEm = C.LightGreen,
linenoEm = C.LightGreen,
nameEm = C.LightPurple,
valEm = C.LightBlue,
# Colors for printing the exception
excName = C.LightRed,
line = C.Yellow,
caret = C.White,
Normal = C.Normal
))
# For light backgrounds, swap dark/light colors
ex_colors.add_scheme(ColorScheme(
'LightBG',
# The color to be used for the top line
topline = C.Red,
# The colors to be used in the traceback
filename = C.LightGreen,
lineno = C.LightGreen,
name = C.LightPurple,
vName = C.Cyan,
val = C.LightGreen,
em = C.Cyan,
# Emphasized colors for the last frame of the traceback
normalEm = C.Cyan,
filenameEm = C.Green,
linenoEm = C.Green,
nameEm = C.Purple,
valEm = C.Blue,
# Colors for printing the exception
excName = C.Red,
#line = C.Brown, # brown often is displayed as yellow
line = C.Red,
caret = C.Normal,
Normal = C.Normal,
))
return ex_colors
# For backwards compatibility, keep around a single global object. Note that
# this should NOT be used, the factory function should be used instead, since
# these objects are stateful and it's very easy to get strange bugs if any code
# modifies the module-level object's state.
ExceptionColors = exception_colors()
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