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dwelling-upload/pkg/utils/filesize.go

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package utils
import (
"io/ioutil"
"strconv"
"strings"
"github.com/pkg/errors"
)
var sizeSuffixes = [...]string{"B", "KiB", "MiB", "GiB", "TiB"}
// ConvertFileSize converts size in bytes down to biggest units it represents.
// Returns converted size, unit and, a concatenation of size and unit
func ConvertFileSize(size int64) (float64, string, string) {
idx := 0
fSize := float64(size)
for ; fSize >= 1024; fSize /= 1024 {
idx++
}
fSizeStr := strconv.FormatFloat(fSize, 'f', 3, 64)
fSizeStr = strings.TrimRight(fSizeStr, "0")
fSizeStr = strings.TrimSuffix(fSizeStr, ".")
return fSize, sizeSuffixes[idx],
strings.Join([]string{fSizeStr, sizeSuffixes[idx]}, " ")
}
func DirectorySize(path string) (dirSz int64, err error) {
dir, err := ioutil.ReadDir(path)
if err != nil {
return 0, errors.Wrapf(err, "failed to compute %s directory size", path)
}
for _, entry := range dir {
dirSz += entry.Size()
}
// Here we subtract a size of a directory's inode to get size of files only.
return dirSz - 4096, nil
}