Move progress into pkg

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

pkg/progress/humaans.go

@@ -0,0 +1,45 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package progress
+
+import (
+	"fmt"
+	"time"
+
+	units "github.com/docker/go-units"
+)
+
+// Bytes converts a regular int64 to human readable type.
+type Bytes int64
+
+// String returns the string representation of bytes
+func (b Bytes) String() string {
+	return units.CustomSize("%02.1f %s", float64(b), 1024.0, []string{"B", "KiB", "MiB", "GiB", "TiB", "PiB", "EiB", "ZiB", "YiB"})
+}
+
+// BytesPerSecond is the rate in seconds for byte operations
+type BytesPerSecond int64
+
+// NewBytesPerSecond returns the rate that n bytes were written in the provided duration
+func NewBytesPerSecond(n int64, duration time.Duration) BytesPerSecond {
+	return BytesPerSecond(float64(n) / duration.Seconds())
+}
+
+// String returns the string representation of the rate
+func (bps BytesPerSecond) String() string {
+	return fmt.Sprintf("%v/s", Bytes(bps))
+}