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# vim:fileencoding=utf-8:noet
from __future__ import (unicode_literals, division, absolute_import, print_function)
import operator
from collections import defaultdict
try:
from __builtin__ import reduce
except ImportError:
from functools import reduce
from pygments.token import Token
from prompt_toolkit.styles import DynamicStyle, Attrs
from powerline.renderers.ipython import IPythonRenderer
from powerline.ipython import IPythonInfo
from powerline.colorscheme import ATTR_BOLD, ATTR_ITALIC, ATTR_UNDERLINE
PowerlinePromptToken = Token.Generic.Prompt.Powerline
# Note: since 2.7 there is dict.__missing__ with same purpose. But in 2.6 one
# must use defaultdict to get __missing__ working.
class PowerlineStyleDict(defaultdict):
'''Dictionary used for getting pygments style for Powerline groups
'''
def __new__(cls, missing_func):
return defaultdict.__new__(cls)
def __init__(self, missing_func):
super(PowerlineStyleDict, self).__init__()
self.missing_func = missing_func
def __missing__(self, key):
return self.missing_func(key)
class PowerlinePromptStyle(DynamicStyle):
def get_attrs_for_token(self, token):
if (
token not in PowerlinePromptToken
or len(token) != len(PowerlinePromptToken) + 1
or not token[-1].startswith('Pl')
or token[-1] == 'Pl'
):
return super(PowerlinePromptStyle, self).get_attrs_for_token(token)
ret = {
'color': None,
'bgcolor': None,
'bold': None,
'underline': None,
'italic': None,
'reverse': False,
'blink': False,
}
for prop in token[-1][3:].split('_'):
if prop[0] == 'a':
ret[prop[1:]] = True
elif prop[0] == 'f':
ret['color'] = prop[1:]
elif prop[0] == 'b':
ret['bgcolor'] = prop[1:]
return Attrs(**ret)
def get_token_to_attributes_dict(self):
dct = super(PowerlinePromptStyle, self).get_token_to_attributes_dict()
def fallback(key):
try:
return dct[key]
except KeyError:
return self.get_attrs_for_token(key)
return PowerlineStyleDict(fallback)
def invalidation_hash(self):
return super(PowerlinePromptStyle, self).invalidation_hash() + 1
class IPythonPygmentsRenderer(IPythonRenderer):
reduce_initial = []
def get_segment_info(self, segment_info, mode):
return super(IPythonPygmentsRenderer, self).get_segment_info(
IPythonInfo(segment_info), mode)
@staticmethod
def hl_join(segments):
return reduce(operator.iadd, segments, [])
def hl(self, contents, fg=None, bg=None, attrs=None, **kwargs):
'''Output highlighted chunk.
This implementation outputs a list containing a single pair
(:py:class:`pygments.token.Token`,
:py:class:`powerline.lib.unicode.unicode`).
'''
guifg = None
guibg = None
attrs = []
if fg is not None and fg is not False:
guifg = fg[1]
if bg is not None and bg is not False:
guibg = bg[1]
if attrs:
attrs = []
if attrs & ATTR_BOLD:
attrs.append('bold')
if attrs & ATTR_ITALIC:
attrs.append('italic')
if attrs & ATTR_UNDERLINE:
attrs.append('underline')
name = (
'Pl'
+ ''.join(('_a' + attr for attr in attrs))
+ (('_f%6x' % guifg) if guifg is not None else '')
+ (('_b%6x' % guibg) if guibg is not None else '')
)
return [(getattr(Token.Generic.Prompt.Powerline, name), contents)]
def hlstyle(self, **kwargs):
return []
def get_client_id(self, segment_info):
return id(self)
renderer = IPythonPygmentsRenderer
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