初版

定时任务管理

libs/string.go

@@ -0,0 +1,37 @@
+/*
+* @Author: haodaquan
+* @Date:   2017-06-20 10:01:39
+* @Last Modified by:   haodaquan
+* @Last Modified time: 2017-06-20 10:02:07
+ */
+
+package libs
+
+import (
+	"crypto/md5"
+	"fmt"
+	"regexp"
+)
+
+var emailPattern = regexp.MustCompile("[\\w!#$%&'*+/=?^_`{|}~-]+(?:\\.[\\w!#$%&'*+/=?^_`{|}~-]+)*@(?:[\\w](?:[\\w-]*[\\w])?\\.)+[a-zA-Z0-9](?:[\\w-]*[\\w])?")
+
+func Md5(buf []byte) string {
+	hash := md5.New()
+	hash.Write(buf)
+	return fmt.Sprintf("%x", hash.Sum(nil))
+}
+
+func SizeFormat(size float64) string {
+	units := []string{"Byte", "KB", "MB", "GB", "TB"}
+	n := 0
+	for size > 1024 {
+		size /= 1024
+		n += 1
+	}
+
+	return fmt.Sprintf("%.2f %s", size, units[n])
+}
+
+func IsEmail(b []byte) bool {
+	return emailPattern.Match(b)
+}