add some utils

utils/fs/dir.go

@@ -0,0 +1,40 @@
+package fs
+
+import (
+	"atom/providers/log"
+	"errors"
+	"os"
+
+	"go.uber.org/zap"
+)
+
+func PathExists(path string) (bool, error) {
+	fi, err := os.Stat(path)
+	if err == nil {
+		if fi.IsDir() {
+			return true, nil
+		}
+		return false, errors.New("存在同名文件")
+	}
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	return false, err
+}
+
+func CreateDir(dirs ...string) (err error) {
+	for _, v := range dirs {
+		exist, err := PathExists(v)
+		if err != nil {
+			return err
+		}
+		if !exist {
+			log.Debug("create directory" + v)
+			if err := os.MkdirAll(v, os.ModePerm); err != nil {
+				log.Error("create directory"+v, zap.Any(" error:", err))
+				return err
+			}
+		}
+	}
+	return err
+}

utils/fs/file.go

@@ -0,0 +1,65 @@
+package fs
+
+import (
+	"os"
+	"path/filepath"
+	"reflect"
+	"strings"
+)
+
+func Move(src string, dst string) (err error) {
+	if dst == "" {
+		return nil
+	}
+	src, err = filepath.Abs(src)
+	if err != nil {
+		return err
+	}
+	dst, err = filepath.Abs(dst)
+	if err != nil {
+		return err
+	}
+	revoke := false
+	dir := filepath.Dir(dst)
+Redirect:
+	_, err = os.Stat(dir)
+	if err != nil {
+		err = os.MkdirAll(dir, 0o755)
+		if err != nil {
+			return err
+		}
+		if !revoke {
+			revoke = true
+			goto Redirect
+		}
+	}
+	return os.Rename(src, dst)
+}
+
+func Delete(filePath string) error {
+	return os.RemoveAll(filePath)
+}
+
+func TrimSpace(target interface{}) {
+	t := reflect.TypeOf(target)
+	if t.Kind() != reflect.Ptr {
+		return
+	}
+	t = t.Elem()
+	v := reflect.ValueOf(target).Elem()
+	for i := 0; i < t.NumField(); i++ {
+		switch v.Field(i).Kind() {
+		case reflect.String:
+			v.Field(i).SetString(strings.TrimSpace(v.Field(i).String()))
+		}
+	}
+}
+
+// FileExist 判断文件是否存在
+func FileExist(path string) bool {
+	fi, err := os.Lstat(path)
+	if err == nil {
+		return !fi.IsDir()
+	}
+	return !os.IsNotExist(err)
+}

utils/hash/bcrypt.go

@@ -0,0 +1,17 @@
+package hash
+
+import (
+	"golang.org/x/crypto/bcrypt"
+)
+
+// BcryptHash 使用 bcrypt 对密码进行加密
+func BcryptHash(password string) string {
+	bytes, _ := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
+	return string(bytes)
+}
+
+// BcryptCheck 对比明文密码和数据库的哈希值
+func BcryptCheck(password, hash string) bool {
+	err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password))
+	return err == nil
+}

utils/hash/md5.go

@@ -0,0 +1,12 @@
+package hash
+
+import (
+	"crypto/md5"
+	"encoding/hex"
+)
+
+func MD5(str []byte, b ...byte) string {
+	h := md5.New()
+	h.Write(str)
+	return hex.EncodeToString(h.Sum(b))
+}

utils/zip.go

@@ -0,0 +1,110 @@
+package utils
+
+import (
+	"archive/zip"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// 解压
+func Unzip(zipFile string, destDir string) ([]string, error) {
+	zipReader, err := zip.OpenReader(zipFile)
+	var paths []string
+	if err != nil {
+		return []string{}, err
+	}
+	defer zipReader.Close()
+
+	for _, f := range zipReader.File {
+		if strings.Index(f.Name, "..") > -1 {
+			return []string{}, fmt.Errorf("%s 文件名不合法", f.Name)
+		}
+		fpath := filepath.Join(destDir, f.Name)
+		paths = append(paths, fpath)
+		if f.FileInfo().IsDir() {
+			os.MkdirAll(fpath, os.ModePerm)
+		} else {
+			if err = os.MkdirAll(filepath.Dir(fpath), os.ModePerm); err != nil {
+				return []string{}, err
+			}
+
+			inFile, err := f.Open()
+			if err != nil {
+				return []string{}, err
+			}
+			defer inFile.Close()
+
+			outFile, err := os.OpenFile(fpath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, f.Mode())
+			if err != nil {
+				return []string{}, err
+			}
+			defer outFile.Close()
+
+			_, err = io.Copy(outFile, inFile)
+			if err != nil {
+				return []string{}, err
+			}
+		}
+	}
+	return paths, nil
+}
+
+func ZipFiles(filename string, files []string, oldForm, newForm string) error {
+	newZipFile, err := os.Create(filename)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		_ = newZipFile.Close()
+	}()
+
+	zipWriter := zip.NewWriter(newZipFile)
+	defer func() {
+		_ = zipWriter.Close()
+	}()
+
+	// 把files添加到zip中
+	for _, file := range files {
+
+		err = func(file string) error {
+			zipFile, err := os.Open(file)
+			if err != nil {
+				return err
+			}
+			defer zipFile.Close()
+			// 获取file的基础信息
+			info, err := zipFile.Stat()
+			if err != nil {
+				return err
+			}
+
+			header, err := zip.FileInfoHeader(info)
+			if err != nil {
+				return err
+			}
+
+			// 使用上面的FileInforHeader() 就可以把文件保存的路径替换成我们自己想要的了，如下面
+			header.Name = strings.Replace(file, oldForm, newForm, -1)
+
+			// 优化压缩
+			// 更多参考see http://golang.org/pkg/archive/zip/#pkg-constants
+			header.Method = zip.Deflate
+
+			writer, err := zipWriter.CreateHeader(header)
+			if err != nil {
+				return err
+			}
+			if _, err = io.Copy(writer, zipFile); err != nil {
+				return err
+			}
+			return nil
+		}(file)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}