Initial checkin from CRI-O repo

Signed-off-by: Matthew Heon <matthew.heon@gmail.com>

vendor/github.com/hpcloud/tail/util/util.go

@@ -0,0 +1,48 @@
+// Copyright (c) 2015 HPE Software Inc. All rights reserved.
+// Copyright (c) 2013 ActiveState Software Inc. All rights reserved.
+
+package util
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"runtime/debug"
+)
+
+type Logger struct {
+	*log.Logger
+}
+
+var LOGGER = &Logger{log.New(os.Stderr, "", log.LstdFlags)}
+
+// fatal is like panic except it displays only the current goroutine's stack.
+func Fatal(format string, v ...interface{}) {
+	// https://github.com/hpcloud/log/blob/master/log.go#L45
+	LOGGER.Output(2, fmt.Sprintf("FATAL -- "+format, v...)+"\n"+string(debug.Stack()))
+	os.Exit(1)
+}
+
+// partitionString partitions the string into chunks of given size,
+// with the last chunk of variable size.
+func PartitionString(s string, chunkSize int) []string {
+	if chunkSize <= 0 {
+		panic("invalid chunkSize")
+	}
+	length := len(s)
+	chunks := 1 + length/chunkSize
+	start := 0
+	end := chunkSize
+	parts := make([]string, 0, chunks)
+	for {
+		if end > length {
+			end = length
+		}
+		parts = append(parts, s[start:end])
+		if end == length {
+			break
+		}
+		start, end = end, end+chunkSize
+	}
+	return parts
+}