3 # Copyright 2012 GRNET S.A. All rights reserved.
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6 # without modification, are permitted provided that the following
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37 from image_creator.output.dialog import GaugeOutput
38 from image_creator.util import MD5
44 def update_background_title(session):
45 """Update the backgroud title of the dialog page"""
47 disk = session['disk']
48 image = session['image']
52 size = (image.size + MB - 1) // MB
53 shrinked = 'shrinked' in session and session['shrinked']
54 postfix = " (shrinked)" if shrinked else ''
56 title = "OS: %s, Distro: %s, Size: %dMB%s, Source: %s" % \
57 (image.ostype, image.distro, size, postfix,
58 os.path.abspath(disk.source))
60 d.setBackgroundTitle(title)
63 def confirm_exit(d, msg=''):
64 """Ask the user to confirm when exiting the program"""
65 return not d.yesno("%s Do you want to exit?" % msg, width=SMALL_WIDTH)
69 """Ask the user to confirm a reset action"""
70 return not d.yesno("Are you sure you want to reset everything?",
71 width=SMALL_WIDTH, defaultno=1)
74 class Reset(Exception):
75 """Exception used to reset the program"""
79 def extract_metadata_string(session):
80 """Convert image metadata to text"""
81 metadata = ['%s=%s' % (k, v) for (k, v) in session['metadata'].items()]
83 if 'task_metadata' in session:
84 metadata.extend("%s=yes" % m for m in session['task_metadata'])
86 return '\n'.join(metadata) + '\n'
89 def extract_image(session):
90 """Dump the image to a local file"""
94 if dir and dir[-1] != os.sep:
97 (code, path) = d.fselect(dir, 10, 50, title="Save image as...")
98 if code in (d.DIALOG_CANCEL, d.DIALOG_ESC):
101 if os.path.isdir(path):
105 if os.path.isdir("%s.meta" % path):
106 d.msgbox("Can't overwrite directory `%s.meta'" % path,
110 if os.path.isdir("%s.md5sum" % path):
111 d.msgbox("Can't overwrite directory `%s.md5sum'" % path,
115 basedir = os.path.dirname(path)
116 name = os.path.basename(path)
117 if not os.path.exists(basedir):
118 d.msgbox("Directory `%s' does not exist" % basedir,
126 files = ["%s%s" % (path, ext) for ext in ('', '.meta', '.md5sum')]
127 overwrite = filter(os.path.exists, files)
129 if len(overwrite) > 0:
130 if d.yesno("The following file(s) exist:\n"
131 "%s\nDo you want to overwrite them?" %
132 "\n".join(overwrite), width=SMALL_WIDTH):
135 gauge = GaugeOutput(d, "Image Extraction", "Extracting image...")
137 image = session['image']
141 if "checksum" not in session:
143 session['checksum'] = md5.compute(image.device, image.size)
148 # Extract metadata file
149 out.output("Extracting metadata file...")
150 with open('%s.meta' % path, 'w') as f:
151 f.write(extract_metadata_string(session))
154 # Extract md5sum file
155 out.output("Extracting md5sum file...")
156 md5str = "%s %s\n" % (session['checksum'], name)
157 with open('%s.md5sum' % path, 'w') as f:
164 d.msgbox("Image file `%s' was successfully extracted!" % path,
170 # vim: set sta sts=4 shiftwidth=4 sw=4 et ai :