88 lines
2.1 KiB
Python
Executable File
88 lines
2.1 KiB
Python
Executable File
#!/usr/bin/python3
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import argparse
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import os
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import re
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import string
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import subprocess
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import sys
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parser = argparse.ArgumentParser(description='iconograph update_grub')
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parser.add_argument(
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'--boot-dir',
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dest='boot_dir',
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action='store',
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required=True)
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parser.add_argument(
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'--image-dir',
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dest='image_dir',
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action='store',
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required=True)
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FLAGS = parser.parse_args()
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class GrubUpdater(object):
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_VOLUME_ID_REGEX = re.compile(b'^Volume id: (?P<volume_id>.+)$', re.MULTILINE)
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_HOTKEYS = string.digits + string.ascii_letters
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def __init__(self, image_dir, boot_dir):
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self._image_dir = image_dir
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self._boot_dir = boot_dir
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assert self._image_dir.startswith(self._boot_dir)
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self._image_path = '/' + os.path.relpath(self._image_dir, self._boot_dir)
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def _GetVolumeID(self, path):
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isoinfo = subprocess.check_output([
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'isoinfo',
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'-d',
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'-i', path,
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])
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match = self._VOLUME_ID_REGEX.search(isoinfo)
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return match.group('volume_id').decode('ascii')
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def Update(self):
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current = os.readlink(os.path.join(self._image_dir, 'current'))
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sys.stdout.write("""
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set timeout=5
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set default=%(default_image_filename)s
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""" % {
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'default_image_filename': os.path.basename(current),
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})
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files = []
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for filename in os.listdir(self._image_dir):
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if not filename.endswith('.iso'):
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continue
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files.append(filename)
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for i, filename in enumerate(sorted(files, reverse=True)):
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sys.stdout.write("""
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menuentry "%(image_filename)s (%(volume_id)s)" --hotkey=%(hotkey)s {
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search --no-floppy --file --set=root %(image_path)s/%(image_filename)s
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iso_path="%(image_path)s/%(image_filename)s"
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export iso_path
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loopback loop "%(image_path)s/%(image_filename)s"
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set root=(loop)
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configfile /boot/grub/loopback.cfg
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}
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""" % {
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'image_filename': filename,
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'image_path': self._image_path,
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'hotkey': self._HOTKEYS[i],
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'volume_id': self._GetVolumeID(os.path.join(self._image_dir, filename)),
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})
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def main():
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updater = GrubUpdater(FLAGS.image_dir, FLAGS.boot_dir)
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updater.Update()
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if __name__ == '__main__':
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main()
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