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package common
import (
"crypto/md5"
"encoding/base64"
"fmt"
log "github.com/sirupsen/logrus"
"os"
"path/filepath"
"strconv"
"strings"
"time"
)
func HTTPGMTDate() string {
GmtDateLayout := "Mon, 02 Jan 2006 15:04:05 GMT"
return time.Now().UTC().Format(GmtDateLayout)
}
func MakeSignature(key, date string) string {
s := strings.Join([]string{key, date}, "\n")
return Base64Encode(MD5Encode([]byte(s)))
}
func Base64Encode(s string) string {
return base64.StdEncoding.EncodeToString([]byte(s))
}
func MD5Encode(b []byte) string {
return fmt.Sprintf("%x", md5.Sum(b))
}
func MakeSureDirExit(filePath string) {
dirPath := filepath.Dir(filePath)
if _, err := os.Stat(dirPath); os.IsNotExist(err) {
err = os.MkdirAll(dirPath, os.ModePerm)
if err != nil {
log.Info("could not create dir path:", dirPath)
os.Exit(1)
}
log.Info("create dir path:", dirPath)
return
}
log.Info("dir path exits:", dirPath)
}
func ConvertSizeToBytes(size string) int {
defaultSize := 1024 * 1024 * 1024
suffixs := []string{"M", "m", "g", "G"}
for i := 0; i < len(suffixs); i++ {
if strings.HasSuffix(size, suffixs[i]) {
num := strings.TrimSuffix(size, suffixs[i])
switch strings.ToLower(suffixs[i]) {
case "m":
if sizeNum, err := strconv.Atoi(num); err == nil {
return sizeNum * 1024 * 1024
}
case "g":
if sizeNum, err := strconv.Atoi(num); err == nil {
return sizeNum * 1024 * 1024 * 1024
}
}
break
}
}
if sizeNum, err := strconv.Atoi(size); err == nil && sizeNum > 0 {
return sizeNum
}
return defaultSize
}