模块化utils、引入protobuf

api/utils/utils.go

@@ -0,0 +1,73 @@
+package utils
+
+import (
+	"os"
+	"strconv"
+	"strings"
+)
+
+// Str2Int string --> int64
+func Str2Int(str string) int64 {
+	val, _ := strconv.Atoi(str)
+	return int64(val)
+}
+
+// Int2Str int64 --> string
+func Int2Str(val int64) string {
+	str := strconv.FormatInt(val, 10)
+	return str
+}
+
+// PathExecute 返回当前运行目录
+func PathExecute() string {
+	dir, err := os.Getwd()
+	if err != nil {
+		panic(err)
+	}
+	return dir + "/"
+}
+
+// CreatePath 生成路径或文件所对应的目录
+func CreatePath(path string) {
+	length := len(path)
+	switch {
+	case path[length:] != "/":
+		path = path[:strings.LastIndex(path, "/")]
+	case path[length:] != "\\":
+		path = path[:strings.LastIndex(path, "\\")]
+	default:
+		//
+	}
+	if !PathExists(path) {
+		err := os.MkdirAll(path, 0755)
+		if err != nil {
+			panic(err)
+		}
+	}
+}
+
+// PathExists 判断路径或文件是否存在
+func PathExists(path string) bool {
+	_, err := os.Stat(path)
+	return err == nil || os.IsExist(err)
+}
+
+// FileSize 获取文件大小
+func FileSize(file string) int64 {
+	if fi, err := os.Stat(file); err == nil {
+		return fi.Size()
+	}
+	return 0
+}
+
+// Min 返回两数最小值
+func Min(a, b int) int {
+	switch {
+	default:
+		return a
+	case a > b:
+		return b
+	case a < b:
+		return a
+	}
+}