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# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
Abstraction API above terminal color libraries.
"""
import os
import sys
from StringIO import StringIO
from contextlib import contextmanager
from ..cli import color
from . import formatting
_indent_string = ''
class TopologyStylizer(object):
def __init__(self, indentation=0):
self._str = StringIO()
self._indentation = indentation
def write(self, string):
self._str.write(' ' * self._indentation)
self._str.write(string)
self._str.write(os.linesep)
@contextmanager
def indent(self, indentation=2):
self._indentation += indentation
yield
self._indentation -= indentation
@staticmethod
def type_style(value):
return Colored.blue(value, bold=True)
@staticmethod
def node_style(value):
return Colored.red(value, bold=True)
@staticmethod
def property_style(value):
return Colored.magenta(value, bold=True)
@staticmethod
def literal_style(value):
return Colored.magenta(formatting.safe_repr(value))
@staticmethod
def required_style(value):
return Colored.white(value)
@staticmethod
def meta_style(value):
return Colored.green(value)
def __str__(self):
return self._str.getvalue()
def puts(string='', newline=True, stream=sys.stdout):
stream.write(_indent_string)
stream.write(formatting.safe_str(string))
if newline:
stream.write(os.linesep)
@contextmanager
def indent(size=4):
global _indent_string
original_indent_string = _indent_string
try:
_indent_string += ' ' * size
yield
finally:
_indent_string = original_indent_string
class Colored(object):
@staticmethod
def black(string, always=False, bold=False):
return Colored._color(string, color.Colors.Fore.BLACK, bold)
@staticmethod
def red(string, always=False, bold=False):
return Colored._color(string, color.Colors.Fore.RED, bold)
@staticmethod
def green(string, always=False, bold=False):
return Colored._color(string, color.Colors.Fore.GREEN, bold)
@staticmethod
def yellow(string, always=False, bold=False):
return Colored._color(string, color.Colors.Fore.YELLOW, bold)
@staticmethod
def blue(string, always=False, bold=False):
return Colored._color(string, color.Colors.Fore.BLUE, bold)
@staticmethod
def magenta(string, always=False, bold=False):
return Colored._color(string, color.Colors.Fore.MAGENTA, bold)
@staticmethod
def cyan(string, always=False, bold=False):
return Colored._color(string, color.Colors.Fore.CYAN, bold)
@staticmethod
def white(string, always=False, bold=False):
return Colored._color(string, color.Colors.Fore.WHITE, bold)
@staticmethod
def _color(string, fore, bold):
return color.StringStylizer(string, color.ColorSpec(
fore=fore,
style=color.Colors.Style.BRIGHT if bold else color.Colors.Style.NORMAL))
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