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84 lines
1.5 KiB
84 lines
1.5 KiB
package utils
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import (
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"Open_IM/pkg/common/constant"
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"fmt"
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"math/rand"
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"os"
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"path"
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"strconv"
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"strings"
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"time"
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)
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const (
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BYTE = 1 << (10 * iota)
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KILOBYTE
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MEGABYTE
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GIGABYTE
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TERABYTE
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PETABYTE
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EXABYTE
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)
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// Determine whether the given path is a folder
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func IsDir(path string) bool {
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s, err := os.Stat(path)
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if err != nil {
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return false
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}
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return s.IsDir()
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}
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// Determine whether the given path is a file
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func IsFile(path string) bool {
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return !IsDir(path)
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}
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// Create a directory
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func MkDir(path string) error {
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return os.MkdirAll(path, os.ModePerm)
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}
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func GetNewFileNameAndContentType(fileName string, fileType int) (string, string) {
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suffix := path.Ext(fileName)
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newName := fmt.Sprintf("%d-%d%s", time.Now().UnixNano(), rand.Int(), fileName)
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contentType := ""
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if fileType == constant.ImageType {
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contentType = "image/" + suffix[1:]
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}
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return newName, contentType
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}
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func ByteSize(bytes uint64) string {
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unit := ""
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value := float64(bytes)
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switch {
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case bytes >= EXABYTE:
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unit = "E"
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value = value / EXABYTE
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case bytes >= PETABYTE:
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unit = "P"
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value = value / PETABYTE
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case bytes >= TERABYTE:
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unit = "T"
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value = value / TERABYTE
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case bytes >= GIGABYTE:
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unit = "G"
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value = value / GIGABYTE
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case bytes >= MEGABYTE:
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unit = "M"
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value = value / MEGABYTE
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case bytes >= KILOBYTE:
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unit = "K"
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value = value / KILOBYTE
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case bytes >= BYTE:
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unit = "B"
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case bytes == 0:
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return "0"
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}
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result := strconv.FormatFloat(value, 'f', 1, 64)
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result = strings.TrimSuffix(result, ".0")
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return result + unit
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}
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