add FixToNo0x

str.go

@@ -3,7 +3,10 @@
 package str
 
 import (
+	"encoding/json"
+	"fmt"
 	"math/rand"
+	"os"
 	"strings"
 	"time"
 )
@@ -14,7 +17,10 @@ const (
 )
 
 // get random number string with length.
-func GetRandomString(l int) string {
+var GetRandomString = GetRandomNumString
+
+// get random number string with length.
+func GetRandomNumString(l int) string {
 	str := NUMBERSTRING
 	bytes := []byte(str)
 	result := []byte{}
@@ -37,7 +43,7 @@ func GetRandomCharString(l int) string {
 	return string(result)
 }
 
-//skip
+// skip
 func Skip(s string, sep string, n int) string {
 	seplen := len(sep)
 	if seplen == 0 || n < 0 {
@@ -64,8 +70,8 @@ func SkipLine(s string, n int) string {
 	return Skip(s, "\n", n)
 }
 
-// get a map keys as array.
+// get a map's keys as array.
-func MapKeys(imap interface{}) (keys []string) {
+func MapsKeys(imap interface{}) (keys []string) {
 	switch imap.(type) {
 	case map[string]string:
 		m := imap.(map[string]string)
@@ -83,20 +89,48 @@ func MapKeys(imap interface{}) (keys []string) {
 	return keys
 }
 
-// get a map keys and join to string.
+// get a map's keys and join it to string.
-func KeysString(imap interface{}) string {
+func MapsKeysString(imap interface{}) string {
-	keys := Keys(imap)
+	keys := MapsKeys(imap)
 	return strings.Join(keys, ",")
 }
 
-//// CHARSTRING   string = "" //will initialize by init function
+// string json to string map to string
-//// func init() {
+func JsonstrToStrMap(jsonstr string) (m map[string]string) {
-//// 	NUMBERSTRING = "0123456789"
+	err := json.Unmarshal([]byte(jsonstr), &m)
-//// 	CHARSTRING = NUMBERSTRING
+	if err != nil {
-//// 	for i := 'a'; i <= 'z'; i++ {
+		panic(fmt.Sprintf("Jsonstr[%s] To MapString failed:%s", jsonstr, err.Error()))
-//// 		CHARSTRING = CHARSTRING + string(i)
+	}
-//// 	}
+	return m
-//// 	for i := 'A'; i <= 'Z'; i++ {
+}
-//// 		CHARSTRING = CHARSTRING + string(i)
+
-//// 	}
+// string to string map to string
-//// }
+//
+//	example: "K1:V1;K2:V2"
+//	      => {K1:V1, K2:V2}
+func StringToStrMap(str string, sep1, sep2 string) (m map[string]string) {
+	m = map[string]string{}
+	for _, kvstr := range strings.Split(str, sep1) {
+		if kv := strings.SplitN(kvstr, sep2, 2); len(kv) == 2 {
+			m[kv[0]] = kv[1]
+		}
+	}
+	return m
+}
+
+// get os env with default
+func GetEnvDefault(key, defval string) string {
+	if val, ok := os.LookupEnv(key); ok {
+		return val
+	} else {
+		return defval
+	}
+}
+
+// fix hex string to no 0x prefix
+func FixToNo0x(hexstr string) string {
+	if strings.HasPrefix(hexstr, "0x") {
+		return hexstr[2:]
+	}
+	return hexstr
+}