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package common
import (
"compress/gzip"
"io"
"os"
"time"
)
func FileExists(name string) bool {
if _, err := os.Stat(name); err != nil {
if os.IsNotExist(err) {
return false
}
}
return true
}
func EnsureDirExist(name string) error {
if !FileExists(name) {
return os.MkdirAll(name, os.ModePerm)
}
return nil
}
func GzipCompressFile(srcPath, dstPath string) error {
sf, err := os.Open(srcPath)
if err != nil {
return err
}
defer sf.Close()
df, err := os.Create(dstPath)
if err != nil {
return err
}
defer df.Close()
writer := gzip.NewWriter(df)
writer.Name = dstPath
writer.ModTime = time.Now().UTC()
_, err = io.Copy(writer, sf)
if err != nil {
return err
}
if err := writer.Close(); err != nil {
return err
}
return nil
}
func Sum(i []int) int {
sum := 0
for _, v := range i {
sum += v
}
return sum
}
func Abs(x int) int {
if x < 0 {
return -x
}
return x
}
func CurrentUTCTime() string {
return time.Now().UTC().Format("2006-01-02 15:04:05 +0000")
}