Initial commit

common/utils.go

@@ -0,0 +1,141 @@
+package common
+
+import (
+	"fmt"
+	"github.com/google/uuid"
+	"html/template"
+	"log"
+	"net"
+	"os/exec"
+	"runtime"
+	"strconv"
+	"strings"
+)
+
+func OpenBrowser(url string) {
+	var err error
+
+	switch runtime.GOOS {
+	case "linux":
+		err = exec.Command("xdg-open", url).Start()
+	case "windows":
+		err = exec.Command("rundll32", "url.dll,FileProtocolHandler", url).Start()
+	case "darwin":
+		err = exec.Command("open", url).Start()
+	}
+	if err != nil {
+		log.Println(err)
+	}
+}
+
+func GetIp() (ip string) {
+	ips, err := net.InterfaceAddrs()
+	if err != nil {
+		log.Println(err)
+		return ip
+	}
+
+	for _, a := range ips {
+		if ipNet, ok := a.(*net.IPNet); ok && !ipNet.IP.IsLoopback() {
+			if ipNet.IP.To4() != nil {
+				ip = ipNet.IP.String()
+				if strings.HasPrefix(ip, "10") {
+					return
+				}
+				if strings.HasPrefix(ip, "172") {
+					return
+				}
+				if strings.HasPrefix(ip, "192.168") {
+					return
+				}
+				ip = ""
+			}
+		}
+	}
+	return
+}
+
+var sizeKB = 1024
+var sizeMB = sizeKB * 1024
+var sizeGB = sizeMB * 1024
+
+func Bytes2Size(num int64) string {
+	numStr := ""
+	unit := "B"
+	if num/int64(sizeGB) > 1 {
+		numStr = fmt.Sprintf("%.2f", float64(num)/float64(sizeGB))
+		unit = "GB"
+	} else if num/int64(sizeMB) > 1 {
+		numStr = fmt.Sprintf("%d", int(float64(num)/float64(sizeMB)))
+		unit = "MB"
+	} else if num/int64(sizeKB) > 1 {
+		numStr = fmt.Sprintf("%d", int(float64(num)/float64(sizeKB)))
+		unit = "KB"
+	} else {
+		numStr = fmt.Sprintf("%d", num)
+	}
+	return numStr + " " + unit
+}
+
+func Seconds2Time(num int) (time string) {
+	if num/31104000 > 0 {
+		time += strconv.Itoa(num/31104000) + " 年 "
+		num %= 31104000
+	}
+	if num/2592000 > 0 {
+		time += strconv.Itoa(num/2592000) + " 个月 "
+		num %= 2592000
+	}
+	if num/86400 > 0 {
+		time += strconv.Itoa(num/86400) + " 天 "
+		num %= 86400
+	}
+	if num/3600 > 0 {
+		time += strconv.Itoa(num/3600) + " 小时 "
+		num %= 3600
+	}
+	if num/60 > 0 {
+		time += strconv.Itoa(num/60) + " 分钟 "
+		num %= 60
+	}
+	time += strconv.Itoa(num) + " 秒"
+	return
+}
+
+func Interface2String(inter interface{}) string {
+	switch inter.(type) {
+	case string:
+		return inter.(string)
+	case int:
+		return fmt.Sprintf("%d", inter.(int))
+	case float64:
+		return fmt.Sprintf("%f", inter.(float64))
+	}
+	return "Not Implemented"
+}
+
+func UnescapeHTML(x string) interface{} {
+	return template.HTML(x)
+}
+
+func IntMax(a int, b int) int {
+	if a >= b {
+		return a
+	} else {
+		return b
+	}
+}
+
+func GetUUID() string {
+	code := uuid.New().String()
+	code = strings.Replace(code, "-", "", -1)
+	return code
+}
+
+func Max(a int, b int) int {
+	if a >= b {
+		return a
+	} else {
+		return b
+	}
+}