/
file.go
59 lines (51 loc) · 1.25 KB
/
file.go
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package util
import (
"github.com/pkg/errors"
"os"
"path/filepath"
"strings"
)
var (
ErrPathUnauthorized = errors.New("access path unauthorized")
)
// 判断所给路径文件/文件夹是否存在
func Exists(path string) bool {
_, err := os.Stat(path) // os.Stat获取文件信息
return err == nil || os.IsExist(err)
}
// 判断所给路径是否为文件夹
func IsDir(path string) bool {
s, err := os.Stat(path)
return err == nil && s.IsDir()
}
// 判断所给路径是否为文件
func IsFile(path string) bool {
s, err := os.Stat(path)
return err == nil && ! s.IsDir()
}
func GetFileInfo(path string) (abs, dir, pureFilename, suffix string) {
abs, _ = filepath.Abs(path)
dir = filepath.Dir(abs)
suffix = filepath.Ext(abs)
if suffix != "" {
pureFilename = strings.TrimSuffix(filepath.Base(abs), suffix)
} else {
pureFilename = filepath.Base(abs)
}
return
}
func FilePathJoinSafely(base string, children ...string) (string, error) {
basePath, e := filepath.Abs(base)
if e != nil {
return "", e
}
childDir := filepath.Join(children...)
joinedDir, e := filepath.Abs(filepath.Join(basePath, childDir))
if e != nil {
return "", e
}
if ! strings.HasPrefix(joinedDir, basePath) {
return "", ErrPathUnauthorized
}
return joinedDir, nil
}