Synnefo » snf-image-creator

# Copyright 2012 GRNET S.A. All rights reserved.

#

# Redistribution and use in source and binary forms, with or

# without modification, are permitted provided that the following

# conditions are met:

#

#   1. Redistributions of source code must retain the above

#      copyright notice, this list of conditions and the following

#      disclaimer.

#

#   2. 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.

#

# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``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 GRNET S.A 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.

#

# The views and conclusions contained in the software and

# documentation are those of the authors and should not be

# interpreted as representing official policies, either expressed

# or implied, of GRNET S.A.

class Output(object):

    def error(self, msg, new_line=True):

        pass

    def warn(self, msg, new_line=True):

        pass

    def success(self, msg, new_line=True):

        pass

    def output(self, msg='', new_line=True):

        pass

    def cleanup(self):

        pass

    def clear(self):

        pass

    def _get_progress(self):

        progress = self._Progress

        progress.output = self

        return progress

    Progress = property(_get_progress)

    class _Progress(object):

        def __init__(self, size, title, bar_type='default'):

            self.size = size

            self.bar_type = bar_type

            self.output.output("%s..." % title, False)

        def goto(self, dest):

            pass

        def next(self):

            pass

        def success(self, result):

            self.output.success(result)

    def progress_generator(self, message):

        def generator(n):

            progressbar = self.Progress(n, message)

            for _ in range(n):

                yield

                progressbar.next()

            progressbar.success('done')

            yield

        return generator

class CombinedOutput(Output):

    def __init__(self, outputs=[]):

        self._outputs = outputs

    def add(self, output):

        self._outputs.append(output)

    def remove(self, output):

        self._outputs.remove(output)

    def error(self, msg, new_line=True):

        for out in self._outputs:

            out.error(msg, new_line)

    def warn(self, msg, new_line=True):

        for out in self._outputs:

            out.warn(msg, new_line)

    def success(self, msg, new_line=True):

        for out in self._outputs:

            out.success(msg, new_line)

    def output(self, msg='', new_line=True):

        for out in self._outputs:

            out.output(msg, new_line)

    def cleanup(self):

        for out in self._outputs:

            out.cleanup()

    def clear(self):

        for out in self._outputs:

            out.clear()

    class _Progress(object):

        def __init__(self, size, title, bar_type='default'):

            self.progresses = []

            for out in self.output._outputs:

                self.progresses.append(out.Progress(size, title, bar_type))

        def goto(self, dest):

            for progress in self.progresses:

                progress.goto(dest)

        def next(self):

            for progress in self.progresses:

                progress.next()

        def success(self, result):

            for progress in self.progresses:

                progress.success(result)

# vim: set sta sts=4 shiftwidth=4 sw=4 et ai :