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# vim:fileencoding=utf-8:noet
from weakref import ref
from atexit import register as atexit
from IPython.terminal.prompts import Prompts
from pygments.token import Token # NOQA
from powerline.ipython import IPythonPowerline
from powerline.renderers.ipython.since_7 import PowerlinePromptStyle
from powerline.bindings.ipython.post_0_11 import PowerlineMagics
class ConfigurableIPythonPowerline(IPythonPowerline):
def init(self, ip):
config = ip.config.Powerline
self.config_overrides = config.get('config_overrides')
self.theme_overrides = config.get('theme_overrides', {})
self.config_paths = config.get('config_paths')
super(ConfigurableIPythonPowerline, self).init(
renderer_module='.since_7')
def do_setup(self, ip, prompts):
prompts.powerline = self
msfn_missing = ()
saved_msfn = getattr(ip, '_make_style_from_name', msfn_missing)
if hasattr(saved_msfn, 'powerline_original'):
saved_msfn = saved_msfn.powerline_original
def _make_style_from_name(ip, name):
prev_style = saved_msfn(name)
new_style = PowerlinePromptStyle(lambda: prev_style)
return new_style
_make_style_from_name.powerline_original = saved_msfn
if not isinstance(ip._style, PowerlinePromptStyle):
prev_style = ip._style
ip._style = PowerlinePromptStyle(lambda: prev_style)
if not isinstance(saved_msfn, type(self.init)):
_saved_msfn = saved_msfn
saved_msfn = lambda: _saved_msfn(ip)
if saved_msfn is not msfn_missing:
ip._make_style_from_name = _make_style_from_name
magics = PowerlineMagics(ip, self)
ip.register_magics(magics)
atexit(self.shutdown)
class PowerlinePrompts(Prompts):
'''Class that returns powerline prompts
'''
def __init__(self, shell):
powerline = ConfigurableIPythonPowerline(shell)
self.shell = shell
powerline.do_setup(shell, self)
self.last_output_count = None
self.last_output = {}
for prompt in ('in', 'continuation', 'rewrite', 'out'):
exec((
'def {0}_prompt_tokens(self, *args, **kwargs):\n'
' if self.last_output_count != self.shell.execution_count:\n'
' self.last_output.clear()\n'
' self.last_output_count = self.shell.execution_count\n'
' if "{0}" not in self.last_output:\n'
' self.last_output["{0}"] = self.powerline.render('
' side="left",'
' matcher_info="{1}",'
' segment_info=self.shell,'
' ) + [(Token.Generic.Prompt, " ")]\n'
' return self.last_output["{0}"]'
).format(prompt, 'in2' if prompt == 'continuation' else prompt))
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