mirror of
https://github.com/minio/minio.git
synced 2024-12-30 09:03:22 -05:00
432275e966
- pkg/{subsystem}/{package} style
- modify Makefile to reflect the new style,
consolidate various entries
- add a dummy ``main.go`` at top level
103 lines
2.2 KiB
Go
103 lines
2.2 KiB
Go
/*
|
|
* Mini Object Storage, (C) 2014 Minio, Inc.
|
|
*
|
|
* 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 unitconv
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"regexp"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
const (
|
|
UNIT_BYTE = 1 << (10 * iota)
|
|
UNIT_KILOBYTE
|
|
UNIT_MEGABYTE
|
|
UNIT_GIGABYTE
|
|
UNIT_TERABYTE
|
|
UNIT_PETABYTE
|
|
)
|
|
|
|
func BytesToString(bytes uint64) string {
|
|
var unit string = "B"
|
|
var value uint64 = 0
|
|
|
|
switch {
|
|
case bytes >= UNIT_TERABYTE:
|
|
unit = "TB"
|
|
value = uint64(bytes / UNIT_TERABYTE)
|
|
case bytes >= UNIT_GIGABYTE:
|
|
unit = "GB"
|
|
value = uint64(bytes / UNIT_GIGABYTE)
|
|
case bytes >= UNIT_MEGABYTE:
|
|
unit = "MB"
|
|
value = uint64(bytes / UNIT_MEGABYTE)
|
|
case bytes >= UNIT_KILOBYTE:
|
|
unit = "KB"
|
|
value = uint64(bytes / UNIT_KILOBYTE)
|
|
case bytes < UNIT_KILOBYTE && bytes >= UNIT_BYTE:
|
|
unit = "B"
|
|
value = uint64(bytes / UNIT_BYTE)
|
|
}
|
|
|
|
return fmt.Sprintf("%d%s", value, unit)
|
|
}
|
|
|
|
func StringToBytes(s string) (uint64, error) {
|
|
var bytes uint64
|
|
var err error
|
|
|
|
bytes, err = strconv.ParseUint(s, 10, 64)
|
|
if err == nil {
|
|
return bytes, nil
|
|
}
|
|
|
|
stringPattern, err := regexp.Compile(`(?i)^(-?\d+)([BKMGT])B?$`)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
parts := stringPattern.FindStringSubmatch(strings.TrimSpace(s))
|
|
if len(parts) < 2 {
|
|
return 0, errors.New("Incorrect string format must be K,KB,M,MB,G,GB")
|
|
}
|
|
|
|
value, err := strconv.ParseUint(parts[1], 10, 0)
|
|
if err != nil || value < 1 {
|
|
return 0, err
|
|
}
|
|
|
|
unit := strings.ToUpper(parts[2])
|
|
switch unit {
|
|
case "T":
|
|
bytes = value * UNIT_TERABYTE
|
|
case "G":
|
|
bytes = value * UNIT_GIGABYTE
|
|
case "M":
|
|
bytes = value * UNIT_MEGABYTE
|
|
case "K":
|
|
bytes = value * UNIT_KILOBYTE
|
|
case "B":
|
|
bytes = value * UNIT_BYTE
|
|
default:
|
|
return 0, errors.New("Incorrect string format must be K,KB,M,MB,G,GB")
|
|
}
|
|
|
|
return bytes, nil
|
|
}
|