新版IP库管理阶段性提交（未完成）

internal/db/models/ip_library_file_model_ext.go

@@ -0,0 +1,69 @@
+package models
+
+import "encoding/json"
+
+func (this *IPLibraryFile) DecodeCountries() []string {
+	var countries = []string{}
+	if IsNotNull(this.Countries) {
+		err := json.Unmarshal(this.Countries, &countries)
+		if err != nil {
+			// ignore error
+		}
+	}
+	return countries
+}
+
+func (this *IPLibraryFile) DecodeProvinces() [][2]string {
+	var provinces = [][2]string{}
+	if IsNotNull(this.Provinces) {
+		err := json.Unmarshal(this.Provinces, &provinces)
+		if err != nil {
+			// ignore error
+		}
+	}
+	return provinces
+}
+
+func (this *IPLibraryFile) DecodeCities() [][3]string {
+	var cities = [][3]string{}
+	if IsNotNull(this.Cities) {
+		err := json.Unmarshal(this.Cities, &cities)
+		if err != nil {
+			// ignore error
+		}
+	}
+	return cities
+}
+
+func (this *IPLibraryFile) DecodeTowns() [][4]string {
+	var towns = [][4]string{}
+	if IsNotNull(this.Towns) {
+		err := json.Unmarshal(this.Towns, &towns)
+		if err != nil {
+			// ignore error
+		}
+	}
+	return towns
+}
+
+func (this *IPLibraryFile) DecodeProviders() []string {
+	var providers = []string{}
+	if IsNotNull(this.Providers) {
+		err := json.Unmarshal(this.Providers, &providers)
+		if err != nil {
+			// ignore error
+		}
+	}
+	return providers
+}
+
+func (this *IPLibraryFile) DecodeEmptyValues() []string {
+	var result = []string{}
+	if IsNotNull(this.EmptyValues) {
+		err := json.Unmarshal(this.EmptyValues, &result)
+		if err != nil {
+			// ignore error
+		}
+	}
+	return result
+}