#! /usr/libexec/platform-python

##########################################################################

#

# Copyright 2008 VMware, Inc.

# All Rights Reserved.

#

# Permission is hereby granted, free of charge, to any person obtaining a

# copy of this software and associated documentation files (the

# "Software"), to deal in the Software without restriction, including

# without limitation the rights to use, copy, modify, merge, publish,

# distribute, sub license, and/or sell copies of the Software, and to

# permit persons to whom the Software is furnished to do so, subject to

# the following conditions:

#

# The above copyright notice and this permission notice (including the

# next paragraph) shall be included in all copies or substantial portions

# of the Software.

#

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.

# IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR

# ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

#

##########################################################################

import sys

class Formatter:

    '''Plain formatter'''

    def __init__(self, stream):

        self.stream = stream

    def text(self, text):

        self.stream.write(text)

    def newline(self):

        self.text('\n')

    def function(self, name):

        self.text(name)

    def variable(self, name):

        self.text(name)

    def literal(self, value):

        self.text(str(value))

    def address(self, addr):

        self.text(str(addr))

class AnsiFormatter(Formatter):

    '''Formatter for plain-text files which outputs ANSI escape codes. See

    http://en.wikipedia.org/wiki/ANSI_escape_code for more information

    concerning ANSI escape codes.

    '''

    _csi = '\33['

    _normal = '0m'

    _bold = '1m'

    _italic = '3m'

    _red = '31m'

    _green = '32m'

    _blue = '34m'

    def _escape(self, code):

        self.text(self._csi + code)

    def function(self, name):

        self._escape(self._bold)

        Formatter.function(self, name)

        self._escape(self._normal)

    def variable(self, name):

        self._escape(self._italic)

        Formatter.variable(self, name)

        self._escape(self._normal)

    def literal(self, value):

        self._escape(self._blue)

        Formatter.literal(self, value)

        self._escape(self._normal)

    def address(self, value):

        self._escape(self._green)

        Formatter.address(self, value)

        self._escape(self._normal)

class WindowsConsoleFormatter(Formatter):

    '''Formatter for the Windows Console. See 

    http://code.activestate.com/recipes/496901/ for more information.

    '''

    STD_INPUT_HANDLE  = -10

    STD_OUTPUT_HANDLE = -11

    STD_ERROR_HANDLE  = -12

    FOREGROUND_BLUE      = 0x01

    FOREGROUND_GREEN     = 0x02

    FOREGROUND_RED       = 0x04

    FOREGROUND_INTENSITY = 0x08

    BACKGROUND_BLUE      = 0x10

    BACKGROUND_GREEN     = 0x20

    BACKGROUND_RED       = 0x40

    BACKGROUND_INTENSITY = 0x80

    _normal = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED

    _bold = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_INTENSITY

    _italic = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED

    _red = FOREGROUND_RED | FOREGROUND_INTENSITY

    _green = FOREGROUND_GREEN | FOREGROUND_INTENSITY

    _blue = FOREGROUND_BLUE | FOREGROUND_INTENSITY

    def __init__(self, stream):

        Formatter.__init__(self, stream)

        if stream is sys.stdin:

            nStdHandle = self.STD_INPUT_HANDLE

        elif stream is sys.stdout:

            nStdHandle = self.STD_OUTPUT_HANDLE

        elif stream is sys.stderr:

            nStdHandle = self.STD_ERROR_HANDLE

        else:

            nStdHandle = None

        if nStdHandle:

            import ctypes

            self.handle = ctypes.windll.kernel32.GetStdHandle(nStdHandle)

        else:

            self.handle = None

    def _attribute(self, attr):

        if self.handle:

            import ctypes

            ctypes.windll.kernel32.SetConsoleTextAttribute(self.handle, attr)

    def function(self, name):

        self._attribute(self._bold)

        Formatter.function(self, name)

        self._attribute(self._normal)

    def variable(self, name):

        self._attribute(self._italic)

        Formatter.variable(self, name)

        self._attribute(self._normal)

    def literal(self, value):

        self._attribute(self._blue)

        Formatter.literal(self, value)

        self._attribute(self._normal)

    def address(self, value):

        self._attribute(self._green)

        Formatter.address(self, value)

        self._attribute(self._normal)

def DefaultFormatter(stream):

    if sys.platform in ('linux2', 'cygwin'):

        return AnsiFormatter(stream)

    elif sys.platform in ('win32',):

        return WindowsConsoleFormatter(stream)

    else:

        return Formatter(stream)