# The MIT License

#

# Copyright (c) 2015 Sebastian Ramacher

#

# 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, sublicense, 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 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 NONINFRINGEMENT. IN NO EVENT SHALL THE

# AUTHORS OR COPYRIGHT HOLDERS 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 subprocess

import os

import platform

from locale import getpreferredencoding

class CopyFailed(Exception):

pass

class XClipboard(object):

"""Manage clipboard with xclip."""

def copy(self, content):

process = subprocess.Popen(['xclip', '-i', '-selection', 'clipboard'],

stdin=subprocess.PIPE)

process.communicate(content.encode(getpreferredencoding()))

if process.returncode != 0:

raise CopyFailed()

class OSXClipboard(object):

"""Manage clipboard with pbcopy."""

def copy(self, content):

process = subprocess.Popen(['pbcopy', 'w'], stdin=subprocess.PIPE)

process.communicate(content.encode(getpreferredencoding()))

if process.returncode != 0:

raise CopyFailed()

def command_exists(command):

process = subprocess.Popen(['which', command], stderr=subprocess.STDOUT,

stdout=subprocess.PIPE)

process.communicate()

return process.returncode == 0

def get_clipboard():

"""Get best clipboard handling implemention for current system."""

if platform.system() == 'Darwin':

if command_exists('pbcopy'):

return OSXClipboard()

if (platform.system() in ('Linux', 'FreeBSD', 'OpenBSD') and

os.getenv('DISPLAY') is not None):

if command_exists('xclip'):

return XClipboard()

return None