#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
#  @file code_formatter.py
#  @brief Utility that helps to manage indents in generated code
#
# This file is a part of HMI D-Bus layer.
# 
# Copyright (c) 2013, Ford Motor Company
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following
# disclaimer in the documentation and/or other materials provided with the
# distribution.
#
# Neither the name of the Ford Motor Company nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 'A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
	
class CodeBlock:
    indent = 0
    def __init__(self, out):
        self.out = out
        if type(out) == file:
            self.indent = 0
        elif type(out) == CodeBlock:
            self.indent = out.indent
    def __enter__(self):
        self.indent += 1
        return self
    def __exit__(self, exc_type, exc_value, traceback):
        if self.indent >= 1:
            self.indent -= 1
    def write(self, s):
        for string in s.splitlines(True):
            self.out.write('  ' * self.indent + string)
        
# vim: set ts=4 sw=4 et: