Pull in new changes from minio-io/objectdriver and minio-io/donut

Godeps/_workspace/src/github.com/minio-io/cli/float64.go

@@ -0,0 +1,50 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"strconv"
+	"strings"
+)
+
+// Float64Flag - a flag of floating number type
+type Float64Flag struct {
+	Name   string
+	Value  float64
+	Usage  string
+	EnvVar string
+	Hide   bool
+}
+
+// String -
+func (f Float64Flag) String() string {
+	return withEnvHint(f.EnvVar, fmt.Sprintf("%s \"%v\"\t%v", prefixedNames(f.Name), f.Value, f.Usage))
+}
+
+// Apply -
+func (f Float64Flag) Apply(set *flag.FlagSet) {
+	if f.EnvVar != "" {
+		for _, envVar := range strings.Split(f.EnvVar, ",") {
+			envVar = strings.TrimSpace(envVar)
+			if envVal := os.Getenv(envVar); envVal != "" {
+				envValFloat, err := strconv.ParseFloat(envVal, 10)
+				if err == nil {
+					f.Value = float64(envValFloat)
+				}
+			}
+		}
+	}
+
+	eachName(f.Name, func(name string) {
+		set.Float64(name, f.Value, f.Usage)
+	})
+}
+
+func (f Float64Flag) getName() string {
+	return f.Name
+}
+
+func (f Float64Flag) isNotHidden() bool {
+	return !f.Hide
+}