root / image_creator / dialog_util.py @ 0a116b9d
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#!/usr/bin/env python
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# Copyright 2012 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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import os |
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from image_creator.output.dialog import GaugeOutput |
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from image_creator.util import MD5 |
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SMALL_WIDTH = 60
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WIDTH = 70
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def update_background_title(session): |
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d = session['dialog']
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dev = session['device']
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MB = 2 ** 20 |
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size = (dev.size + MB - 1) // MB
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shrinked = 'shrinked' in session and session['shrinked'] |
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postfix = " (shrinked)" if shrinked else '' |
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title = "OS: %s, Distro: %s, Size: %dMB%s" % \
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(dev.ostype, dev.distro, size, postfix) |
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d.setBackgroundTitle(title) |
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def confirm_exit(d, msg=''): |
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return not d.yesno("%s Do you want to exit?" % msg, width=SMALL_WIDTH) |
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def confirm_reset(d): |
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return not d.yesno("Are you sure you want to reset everything?", |
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width=SMALL_WIDTH, defaultno=1)
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class Reset(Exception): |
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pass
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def extract_metadata_string(session): |
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metadata = ['%s=%s' % (k, v) for (k, v) in session['metadata'].items()] |
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if 'task_metadata' in session: |
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metadata.extend("%s=yes" % m for m in session['task_metadata']) |
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return '\n'.join(metadata) + '\n' |
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def extract_image(session): |
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d = session['dialog']
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dir = os.getcwd() |
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while 1: |
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if dir and dir[-1] != os.sep: |
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dir = dir + os.sep
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(code, path) = d.fselect(dir, 10, 50, title="Save image as...") |
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if code in (d.DIALOG_CANCEL, d.DIALOG_ESC): |
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return False |
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if os.path.isdir(path):
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dir = path |
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continue
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if os.path.isdir("%s.meta" % path): |
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d.msgbox("Can't overwrite directory `%s.meta'" % path,
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width=SMALL_WIDTH) |
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continue
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if os.path.isdir("%s.md5sum" % path): |
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d.msgbox("Can't overwrite directory `%s.md5sum'" % path,
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width=SMALL_WIDTH) |
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continue
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basedir = os.path.dirname(path) |
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name = os.path.basename(path) |
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if not os.path.exists(basedir): |
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d.msgbox("Directory `%s' does not exist" % basedir,
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width=SMALL_WIDTH) |
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continue
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dir = basedir |
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if len(name) == 0: |
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continue
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files = ["%s%s" % (path, ext) for ext in ('', '.meta', '.md5sum')] |
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overwrite = filter(os.path.exists, files)
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if len(overwrite) > 0: |
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if d.yesno("The following file(s) exist:\n" |
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"%s\nDo you want to overwrite them?" %
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"\n".join(overwrite), width=SMALL_WIDTH):
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continue
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gauge = GaugeOutput(d, "Image Extraction", "Extracting image...") |
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try:
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dev = session['device']
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out = dev.out |
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out.add(gauge) |
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try:
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if "checksum" not in session: |
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size = dev.size |
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md5 = MD5(out) |
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session['checksum'] = md5.compute(session['snapshot'], |
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size) |
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# Extract image file
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dev.dump(path) |
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# Extract metadata file
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out.output("Extracting metadata file...")
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with open('%s.meta' % path, 'w') as f: |
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f.write(extract_metadata_string(session)) |
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out.success('done')
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# Extract md5sum file
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out.output("Extracting md5sum file...")
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md5str = "%s %s\n" % (session['checksum'], name) |
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with open('%s.md5sum' % path, 'w') as f: |
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f.write(md5str) |
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out.success("done")
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finally:
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out.remove(gauge) |
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finally:
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gauge.cleanup() |
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d.msgbox("Image file `%s' was successfully extracted!" % path,
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width=SMALL_WIDTH) |
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break
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return True |
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# vim: set sta sts=4 shiftwidth=4 sw=4 et ai :
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