fix 2 issues

demo/smoke.yaml

-title: 测试文件
+title: 冒烟测试文件
 desc:
 author: zentao
 version: 1.0
 
 fields:
   - field: test1
-    range: [1-5]:3{2}
+    range: 1-5:3{2}
     postfix: "\t"
 
   - field: test2

res/en/usage.txt

@@ -50,6 +50,7 @@ $>zd.exe -c demo/default.yaml -i test.txt --decode  # Parse the file specified b
 $>zd.exe -l                         # List all build-in data types.
 $>zd.exe -v system.address.v1       # View data types in build-in Excel file system/address/v1.xlsx.
 $>zd.exe -v system.address.v1.china # View data items in Excel sheet "china".
+$>zd.exe -v system.ip.v1.yaml       # View data items in build-in instances。
 
 Service Example
 

res/zh/usage.txt

@@ -42,6 +42,7 @@ $>zd.exe -c demo\default.yaml -i test.txt --decode  将-i指定的文件根据-d
 $>zd.exe -l                         # 列出所有內置数据。
 $>zd.exe -v system.address.v1       # 查看內置Excel文件system/address/v1.xlsx中的数据表。
 $>zd.exe -v system.address.v1.china # 查看內置Excel文件china数据表中的数据。
+$>zd.exe -v system.ip.v1.yaml       # 查看內置名为IP的Instances数据。
 
 服务模式举例：
 

src/gen/definition.go

@@ -48,8 +48,14 @@ func LoadConfigDef(defaultFile, configFile string, fieldsToExport *[]string) mod
 
 	// use all fields from default
 	if len(*fieldsToExport) == 0 {
-		for _, field := range defaultDef.Fields {
-			*fieldsToExport = append(*fieldsToExport, field.Field)
+		if len(defaultDef.Fields) >0 {
+			for _, field := range defaultDef.Fields {
+				*fieldsToExport = append(*fieldsToExport, field.Field)
+			}
+		} else {
+			for _, field := range configDef.Fields {
+				*fieldsToExport = append(*fieldsToExport, field.Field)
+			}
 		}
 	}
 
@@ -72,10 +78,10 @@ func mergerDefine(defaultDef, configDef *model.DefData) {
 	sortedKeys := make([]string, 0)
 
 	for i := range defaultDef.Fields {
-		CreatePathToFieldMap(&defaultDef.Fields[i], defaultFieldMap, &sortedKeys)
+		CreatePathToFieldMap(&defaultDef.Fields[i], defaultFieldMap, nil)
 	}
 	for i := range configDef.Fields {
-		CreatePathToFieldMap(&configDef.Fields[i], configFieldMap, nil)
+		CreatePathToFieldMap(&configDef.Fields[i], configFieldMap, &sortedKeys)
 	}
 
 	// overwrite

src/gen/rand.go

@@ -58,6 +58,9 @@ func GetRandFromRange(dataType, start, end, step, repeatStr, precisionStr string
 		endChar := end[0]
 		stepInt, _ := strconv.ParseInt(step, 10, 64)
 		countInRound := int64(int64(endChar) - int64(startChar)) / stepInt
+		if countInRound <0 {
+			countInRound = countInRound * -1
+		}
 
 		for i := 0; i < count; i++ {
 			rand := commonUtils.RandNum64(countInRound)