ducky/devices

Paddy 2015-11-27 Parent:b6494e1a499e

10:74dbc04879a7 Go to Latest

ducky/devices/vendor/code.google.com/p/go-uuid/uuid/util.go

Implement and test updating devices, and reuse contexts. Update all our tests to use the same context.Context instance within each test case, so static analysis about how we're passing contexts around dosn't get tripped up. Also, write a test that will check to make sure that our Storer implementations all actually update the Device correctly. We create every possible permutation of a DeviceChange, just to make sure they all work.

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paddy@0 1 // Copyright 2011 Google Inc. All rights reserved.
paddy@0 2 // Use of this source code is governed by a BSD-style
paddy@0 3 // license that can be found in the LICENSE file.
paddy@0 4
paddy@0 5 package uuid
paddy@0 6
paddy@0 7 import (
paddy@0 8 "io"
paddy@0 9 )
paddy@0 10
paddy@0 11 // randomBits completely fills slice b with random data.
paddy@0 12 func randomBits(b []byte) {
paddy@0 13 if _, err := io.ReadFull(rander, b); err != nil {
paddy@0 14 panic(err.Error()) // rand should never fail
paddy@0 15 }
paddy@0 16 }
paddy@0 17
paddy@0 18 // xvalues returns the value of a byte as a hexadecimal digit or 255.
paddy@0 19 var xvalues = []byte{
paddy@0 20 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
paddy@0 21 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
paddy@0 22 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
paddy@0 23 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 255, 255, 255, 255, 255, 255,
paddy@0 24 255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255,
paddy@0 25 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
paddy@0 26 255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255,
paddy@0 27 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
paddy@0 28 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
paddy@0 29 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
paddy@0 30 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
paddy@0 31 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
paddy@0 32 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
paddy@0 33 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
paddy@0 34 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
paddy@0 35 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
paddy@0 36 }
paddy@0 37
paddy@0 38 // xtob converts the the first two hex bytes of x into a byte.
paddy@0 39 func xtob(x string) (byte, bool) {
paddy@0 40 b1 := xvalues[x[0]]
paddy@0 41 b2 := xvalues[x[1]]
paddy@0 42 return (b1 << 4) | b2, b1 != 255 && b2 != 255
paddy@0 43 }