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authorWim <wim@42.be>2016-04-10 23:39:38 +0200
committerWim <wim@42.be>2016-04-10 23:39:38 +0200
commitde4c7804101a47a01d0c9b88ea34d2b153e2b6b9 (patch)
treefa379bc2e706951a913e0c7009d9906e42363655 /vendor/github.com/pborman/uuid/version1.go
parent6b18257185b1830bd2eff83fae30bdd2055f78b0 (diff)
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Vendor libs
Diffstat (limited to 'vendor/github.com/pborman/uuid/version1.go')
-rw-r--r--vendor/github.com/pborman/uuid/version1.go41
1 files changed, 41 insertions, 0 deletions
diff --git a/vendor/github.com/pborman/uuid/version1.go b/vendor/github.com/pborman/uuid/version1.go
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index 00000000..0127eacf
--- /dev/null
+++ b/vendor/github.com/pborman/uuid/version1.go
@@ -0,0 +1,41 @@
+// Copyright 2011 Google Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package uuid
+
+import (
+ "encoding/binary"
+)
+
+// NewUUID returns a Version 1 UUID based on the current NodeID and clock
+// sequence, and the current time. If the NodeID has not been set by SetNodeID
+// or SetNodeInterface then it will be set automatically. If the NodeID cannot
+// be set NewUUID returns nil. If clock sequence has not been set by
+// SetClockSequence then it will be set automatically. If GetTime fails to
+// return the current NewUUID returns nil.
+func NewUUID() UUID {
+ if nodeID == nil {
+ SetNodeInterface("")
+ }
+
+ now, seq, err := GetTime()
+ if err != nil {
+ return nil
+ }
+
+ uuid := make([]byte, 16)
+
+ time_low := uint32(now & 0xffffffff)
+ time_mid := uint16((now >> 32) & 0xffff)
+ time_hi := uint16((now >> 48) & 0x0fff)
+ time_hi |= 0x1000 // Version 1
+
+ binary.BigEndian.PutUint32(uuid[0:], time_low)
+ binary.BigEndian.PutUint16(uuid[4:], time_mid)
+ binary.BigEndian.PutUint16(uuid[6:], time_hi)
+ binary.BigEndian.PutUint16(uuid[8:], seq)
+ copy(uuid[10:], nodeID)
+
+ return uuid
+}