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gofiles/gofiles.go

129 lines
2.4 KiB

package gofiles
import (
"fmt"
"log"
"math"
"os"
)
// DeleteFile 删除文件
func DeleteFile(pathName string) (bool, error) {
err := os.Remove(pathName)
if err != nil {
return false, err
} else {
return true, nil
}
}
// DeletesFiles 删除文件夹
func DeletesFiles(path string) (bool, error) {
err := os.RemoveAll(path)
if err != nil {
return false, err
} else {
return true, nil
}
}
// ExistFile 判断文件是否存在
func ExistFile(pathName string) (bool, error) {
fileInfo, err := os.Stat(pathName)
if os.IsNotExist(err) {
return false, nil
}
// 如果是0也算不存在
if fileInfo.Size() == 0 {
return false, nil
}
if err == nil {
return true, nil
}
return false, err
}
// ExistFiles 判断文件夹是否存在
func ExistFiles(path string) (bool, error) {
_, err := os.Stat(path)
if err == nil {
return true, nil
}
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
// CreateFile 创建文件
func CreateFile(fileName string) (bool, error) {
_, err := os.Create(fileName)
if err != nil {
return false, err
} else {
return true, nil
}
}
// CreateFiles 创建文件夹
func CreateFiles(path string, perm int) (bool, error) {
err := os.MkdirAll(path, os.FileMode(perm))
if err != nil {
return false, err
} else {
return true, nil
}
}
// DirExist 判断目录是否存在,存在返回 true
func DirExist(path string) (bool, error) {
_, err := os.Stat(path)
if err == nil {
return true, nil
}
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
// CreateDir 创建目录
func CreateDir(path string) error {
dirExist, err := DirExist(path)
if err != nil {
return err
}
if !dirExist {
err := os.Mkdir(path, os.ModePerm)
if err != nil {
log.Printf("创建[%s]目录失败: %s\n", path, err)
}
}
return err
}
func logn(n, b float64) float64 {
return math.Log(n) / math.Log(b)
}
func humanateBytes(s uint64, base float64, sizes []string) string {
if s < 10 {
return fmt.Sprintf("%dB", s)
}
e := math.Floor(logn(float64(s), base))
suffix := sizes[int(e)]
val := float64(s) / math.Pow(base, math.Floor(e))
f := "%.0f"
if val < 10 {
f = "%.1f"
}
return fmt.Sprintf(f+"%s", val, suffix)
}
// FileSize 计算文件大小并生成用户友好的字符串。
func FileSize(s uint64) string {
sizes := []string{"B", "KB", "MB", "GB", "TB", "PB", "EB"}
return humanateBytes(uint64(s), 1024, sizes)
}