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# -*- coding: utf-8 -*- |
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# Generated by Django 1.9.6 on 2017-03-17 08:04 |
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from __future__ import unicode_literals |
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from django.db import migrations |
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from django.db.models import F |
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8
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def convert_version_string_to_int(string, number_bits): |
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""" |
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Take in a verison string e.g. '3.0.1' |
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Store it as a converted int: 3*(2**number_bits[0])+0*(2**number_bits[1])+1*(2**number_bits[2]) |
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>>> convert_version_string_to_int('3.0.1',[8,8,16]) |
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50331649 |
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""" |
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numbers = [int(number_string) for number_string in string.split(".")] |
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if len(numbers) > len(number_bits): |
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raise NotImplementedError( |
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"Versions with more than {0} decimal places are not supported".format( |
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len(number_bits) - 1)) |
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# add 0s for missing numbers |
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numbers.extend([0] * (len(number_bits) - len(numbers))) |
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#convert to single int and return |
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number = 0 |
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total_bits = 0 |
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for num, bits in reversed(list(zip(numbers, number_bits))): |
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max_num = (bits + 1) - 1 |
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if num >= 1 << max_num: |
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raise ValueError( |
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"Number {0} cannot be stored with only {1} bits. Max is {2}".format(num, bits, |
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max_num)) |
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number += num << total_bits |
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total_bits += bits |
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return number |
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def char_to_version(apps, schema_editor): |
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SparkleVersion = apps.get_model("sparkle", "SparkleVersion") |
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versions = SparkleVersion.objects.iterator() |
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for version in versions: |
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version._version = convert_version_string_to_int(version.version, [16, 16]) |
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if version.short_version: |
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version._short_version = convert_version_string_to_int(version.short_version, [8, 8, 16, 16]) |
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version.save() |
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class Migration(migrations.Migration): |
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dependencies = [ |
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('sparkle', '0010_auto_20170317_0804'), |
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] |
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operations = [ |
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migrations.RunPython( |
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char_to_version, |
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reverse_code=migrations.RunPython.noop |
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), |
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] |
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Crystalnix /
omaha-server
