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Current File : //lib/python2.7/site-packages/salt/modules/mac_desktop.py

# -*- coding: utf-8 -*-
'''
macOS implementations of various commands in the "desktop" interface
'''
from __future__ import absolute_import, unicode_literals, print_function

# Import Salt libs
import salt.utils.platform
from salt.exceptions import CommandExecutionError

# Define the module's virtual name
__virtualname__ = 'desktop'


def __virtual__():
    '''
    Only load on Mac systems
    '''
    if salt.utils.platform.is_darwin():
        return __virtualname__
    return False, 'Cannot load macOS desktop module: This is not a macOS host.'


def get_output_volume():
    '''
    Get the output volume (range 0 to 100)

    CLI Example:

    .. code-block:: bash

        salt '*' desktop.get_output_volume
    '''
    cmd = 'osascript -e "get output volume of (get volume settings)"'
    call = __salt__['cmd.run_all'](
        cmd,
        output_loglevel='debug',
        python_shell=False
    )
    _check_cmd(call)

    return call.get('stdout')


def set_output_volume(volume):
    '''
    Set the volume of sound.

    volume
        The level of volume. Can range from 0 to 100.

    CLI Example:

    .. code-block:: bash

        salt '*' desktop.set_output_volume <volume>
    '''
    cmd = 'osascript -e "set volume output volume {0}"'.format(volume)
    call = __salt__['cmd.run_all'](
        cmd,
        output_loglevel='debug',
        python_shell=False
    )
    _check_cmd(call)

    return get_output_volume()


def screensaver():
    '''
    Launch the screensaver.

    CLI Example:

    .. code-block:: bash

        salt '*' desktop.screensaver
    '''
    cmd = 'open /System/Library/Frameworks/ScreenSaver.framework/Versions/A/Resources/ScreenSaverEngine.app'
    call = __salt__['cmd.run_all'](
        cmd,
        output_loglevel='debug',
        python_shell=False
    )
    _check_cmd(call)

    return True


def lock():
    '''
    Lock the desktop session

    CLI Example:

    .. code-block:: bash

        salt '*' desktop.lock
    '''
    cmd = '/System/Library/CoreServices/Menu\\ Extras/User.menu/Contents/Resources/CGSession -suspend'
    call = __salt__['cmd.run_all'](
        cmd,
        output_loglevel='debug',
        python_shell=False
    )
    _check_cmd(call)

    return True


def say(*words):
    '''
    Say some words.

    words
        The words to execute the say command with.

    CLI Example:

    .. code-block:: bash

        salt '*' desktop.say <word0> <word1> ... <wordN>
    '''
    cmd = 'say {0}'.format(' '.join(words))
    call = __salt__['cmd.run_all'](
        cmd,
        output_loglevel='debug',
        python_shell=False
    )
    _check_cmd(call)

    return True


def _check_cmd(call):
    '''
    Check the output of the cmd.run_all function call.
    '''
    if call['retcode'] != 0:
        comment = ''
        std_err = call.get('stderr')
        std_out = call.get('stdout')
        if std_err:
            comment += std_err
        if std_out:
            comment += std_out

        raise CommandExecutionError('Error running command: {0}'.format(comment))

    return call

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