--- /dev/null
+package gorm
+
+import (
+ "database/sql"
+ "errors"
+ "go/ast"
+ "reflect"
+ "strings"
+ "sync"
+ "time"
+
+ "github.com/jinzhu/inflection"
+)
+
+// DefaultTableNameHandler default table name handler
+var DefaultTableNameHandler = func(db *DB, defaultTableName string) string {
+ return defaultTableName
+}
+
+var modelStructsMap sync.Map
+
+// ModelStruct model definition
+type ModelStruct struct {
+ PrimaryFields []*StructField
+ StructFields []*StructField
+ ModelType reflect.Type
+
+ defaultTableName string
+ l sync.Mutex
+}
+
+// TableName returns model's table name
+func (s *ModelStruct) TableName(db *DB) string {
+ s.l.Lock()
+ defer s.l.Unlock()
+
+ if s.defaultTableName == "" && db != nil && s.ModelType != nil {
+ // Set default table name
+ if tabler, ok := reflect.New(s.ModelType).Interface().(tabler); ok {
+ s.defaultTableName = tabler.TableName()
+ } else {
+ tableName := ToTableName(s.ModelType.Name())
+ if db == nil || !db.parent.singularTable {
+ tableName = inflection.Plural(tableName)
+ }
+ s.defaultTableName = tableName
+ }
+ }
+
+ return DefaultTableNameHandler(db, s.defaultTableName)
+}
+
+// StructField model field's struct definition
+type StructField struct {
+ DBName string
+ Name string
+ Names []string
+ IsPrimaryKey bool
+ IsNormal bool
+ IsIgnored bool
+ IsScanner bool
+ HasDefaultValue bool
+ Tag reflect.StructTag
+ TagSettings map[string]string
+ Struct reflect.StructField
+ IsForeignKey bool
+ Relationship *Relationship
+
+ tagSettingsLock sync.RWMutex
+}
+
+// TagSettingsSet Sets a tag in the tag settings map
+func (s *StructField) TagSettingsSet(key, val string) {
+ s.tagSettingsLock.Lock()
+ defer s.tagSettingsLock.Unlock()
+ s.TagSettings[key] = val
+}
+
+// TagSettingsGet returns a tag from the tag settings
+func (s *StructField) TagSettingsGet(key string) (string, bool) {
+ s.tagSettingsLock.RLock()
+ defer s.tagSettingsLock.RUnlock()
+ val, ok := s.TagSettings[key]
+ return val, ok
+}
+
+// TagSettingsDelete deletes a tag
+func (s *StructField) TagSettingsDelete(key string) {
+ s.tagSettingsLock.Lock()
+ defer s.tagSettingsLock.Unlock()
+ delete(s.TagSettings, key)
+}
+
+func (structField *StructField) clone() *StructField {
+ clone := &StructField{
+ DBName: structField.DBName,
+ Name: structField.Name,
+ Names: structField.Names,
+ IsPrimaryKey: structField.IsPrimaryKey,
+ IsNormal: structField.IsNormal,
+ IsIgnored: structField.IsIgnored,
+ IsScanner: structField.IsScanner,
+ HasDefaultValue: structField.HasDefaultValue,
+ Tag: structField.Tag,
+ TagSettings: map[string]string{},
+ Struct: structField.Struct,
+ IsForeignKey: structField.IsForeignKey,
+ }
+
+ if structField.Relationship != nil {
+ relationship := *structField.Relationship
+ clone.Relationship = &relationship
+ }
+
+ // copy the struct field tagSettings, they should be read-locked while they are copied
+ structField.tagSettingsLock.Lock()
+ defer structField.tagSettingsLock.Unlock()
+ for key, value := range structField.TagSettings {
+ clone.TagSettings[key] = value
+ }
+
+ return clone
+}
+
+// Relationship described the relationship between models
+type Relationship struct {
+ Kind string
+ PolymorphicType string
+ PolymorphicDBName string
+ PolymorphicValue string
+ ForeignFieldNames []string
+ ForeignDBNames []string
+ AssociationForeignFieldNames []string
+ AssociationForeignDBNames []string
+ JoinTableHandler JoinTableHandlerInterface
+}
+
+func getForeignField(column string, fields []*StructField) *StructField {
+ for _, field := range fields {
+ if field.Name == column || field.DBName == column || field.DBName == ToColumnName(column) {
+ return field
+ }
+ }
+ return nil
+}
+
+// GetModelStruct get value's model struct, relationships based on struct and tag definition
+func (scope *Scope) GetModelStruct() *ModelStruct {
+ var modelStruct ModelStruct
+ // Scope value can't be nil
+ if scope.Value == nil {
+ return &modelStruct
+ }
+
+ reflectType := reflect.ValueOf(scope.Value).Type()
+ for reflectType.Kind() == reflect.Slice || reflectType.Kind() == reflect.Ptr {
+ reflectType = reflectType.Elem()
+ }
+
+ // Scope value need to be a struct
+ if reflectType.Kind() != reflect.Struct {
+ return &modelStruct
+ }
+
+ // Get Cached model struct
+ if value, ok := modelStructsMap.Load(reflectType); ok && value != nil {
+ return value.(*ModelStruct)
+ }
+
+ modelStruct.ModelType = reflectType
+
+ // Get all fields
+ for i := 0; i < reflectType.NumField(); i++ {
+ if fieldStruct := reflectType.Field(i); ast.IsExported(fieldStruct.Name) {
+ field := &StructField{
+ Struct: fieldStruct,
+ Name: fieldStruct.Name,
+ Names: []string{fieldStruct.Name},
+ Tag: fieldStruct.Tag,
+ TagSettings: parseTagSetting(fieldStruct.Tag),
+ }
+
+ // is ignored field
+ if _, ok := field.TagSettingsGet("-"); ok {
+ field.IsIgnored = true
+ } else {
+ if _, ok := field.TagSettingsGet("PRIMARY_KEY"); ok {
+ field.IsPrimaryKey = true
+ modelStruct.PrimaryFields = append(modelStruct.PrimaryFields, field)
+ }
+
+ if _, ok := field.TagSettingsGet("DEFAULT"); ok {
+ field.HasDefaultValue = true
+ }
+
+ if _, ok := field.TagSettingsGet("AUTO_INCREMENT"); ok && !field.IsPrimaryKey {
+ field.HasDefaultValue = true
+ }
+
+ indirectType := fieldStruct.Type
+ for indirectType.Kind() == reflect.Ptr {
+ indirectType = indirectType.Elem()
+ }
+
+ fieldValue := reflect.New(indirectType).Interface()
+ if _, isScanner := fieldValue.(sql.Scanner); isScanner {
+ // is scanner
+ field.IsScanner, field.IsNormal = true, true
+ if indirectType.Kind() == reflect.Struct {
+ for i := 0; i < indirectType.NumField(); i++ {
+ for key, value := range parseTagSetting(indirectType.Field(i).Tag) {
+ if _, ok := field.TagSettingsGet(key); !ok {
+ field.TagSettingsSet(key, value)
+ }
+ }
+ }
+ }
+ } else if _, isTime := fieldValue.(*time.Time); isTime {
+ // is time
+ field.IsNormal = true
+ } else if _, ok := field.TagSettingsGet("EMBEDDED"); ok || fieldStruct.Anonymous {
+ // is embedded struct
+ for _, subField := range scope.New(fieldValue).GetModelStruct().StructFields {
+ subField = subField.clone()
+ subField.Names = append([]string{fieldStruct.Name}, subField.Names...)
+ if prefix, ok := field.TagSettingsGet("EMBEDDED_PREFIX"); ok {
+ subField.DBName = prefix + subField.DBName
+ }
+
+ if subField.IsPrimaryKey {
+ if _, ok := subField.TagSettingsGet("PRIMARY_KEY"); ok {
+ modelStruct.PrimaryFields = append(modelStruct.PrimaryFields, subField)
+ } else {
+ subField.IsPrimaryKey = false
+ }
+ }
+
+ if subField.Relationship != nil && subField.Relationship.JoinTableHandler != nil {
+ if joinTableHandler, ok := subField.Relationship.JoinTableHandler.(*JoinTableHandler); ok {
+ newJoinTableHandler := &JoinTableHandler{}
+ newJoinTableHandler.Setup(subField.Relationship, joinTableHandler.TableName, reflectType, joinTableHandler.Destination.ModelType)
+ subField.Relationship.JoinTableHandler = newJoinTableHandler
+ }
+ }
+
+ modelStruct.StructFields = append(modelStruct.StructFields, subField)
+ }
+ continue
+ } else {
+ // build relationships
+ switch indirectType.Kind() {
+ case reflect.Slice:
+ defer func(field *StructField) {
+ var (
+ relationship = &Relationship{}
+ toScope = scope.New(reflect.New(field.Struct.Type).Interface())
+ foreignKeys []string
+ associationForeignKeys []string
+ elemType = field.Struct.Type
+ )
+
+ if foreignKey, _ := field.TagSettingsGet("FOREIGNKEY"); foreignKey != "" {
+ foreignKeys = strings.Split(foreignKey, ",")
+ }
+
+ if foreignKey, _ := field.TagSettingsGet("ASSOCIATION_FOREIGNKEY"); foreignKey != "" {
+ associationForeignKeys = strings.Split(foreignKey, ",")
+ } else if foreignKey, _ := field.TagSettingsGet("ASSOCIATIONFOREIGNKEY"); foreignKey != "" {
+ associationForeignKeys = strings.Split(foreignKey, ",")
+ }
+
+ for elemType.Kind() == reflect.Slice || elemType.Kind() == reflect.Ptr {
+ elemType = elemType.Elem()
+ }
+
+ if elemType.Kind() == reflect.Struct {
+ if many2many, _ := field.TagSettingsGet("MANY2MANY"); many2many != "" {
+ relationship.Kind = "many_to_many"
+
+ { // Foreign Keys for Source
+ joinTableDBNames := []string{}
+
+ if foreignKey, _ := field.TagSettingsGet("JOINTABLE_FOREIGNKEY"); foreignKey != "" {
+ joinTableDBNames = strings.Split(foreignKey, ",")
+ }
+
+ // if no foreign keys defined with tag
+ if len(foreignKeys) == 0 {
+ for _, field := range modelStruct.PrimaryFields {
+ foreignKeys = append(foreignKeys, field.DBName)
+ }
+ }
+
+ for idx, foreignKey := range foreignKeys {
+ if foreignField := getForeignField(foreignKey, modelStruct.StructFields); foreignField != nil {
+ // source foreign keys (db names)
+ relationship.ForeignFieldNames = append(relationship.ForeignFieldNames, foreignField.DBName)
+
+ // setup join table foreign keys for source
+ if len(joinTableDBNames) > idx {
+ // if defined join table's foreign key
+ relationship.ForeignDBNames = append(relationship.ForeignDBNames, joinTableDBNames[idx])
+ } else {
+ defaultJointableForeignKey := ToColumnName(reflectType.Name()) + "_" + foreignField.DBName
+ relationship.ForeignDBNames = append(relationship.ForeignDBNames, defaultJointableForeignKey)
+ }
+ }
+ }
+ }
+
+ { // Foreign Keys for Association (Destination)
+ associationJoinTableDBNames := []string{}
+
+ if foreignKey, _ := field.TagSettingsGet("ASSOCIATION_JOINTABLE_FOREIGNKEY"); foreignKey != "" {
+ associationJoinTableDBNames = strings.Split(foreignKey, ",")
+ }
+
+ // if no association foreign keys defined with tag
+ if len(associationForeignKeys) == 0 {
+ for _, field := range toScope.PrimaryFields() {
+ associationForeignKeys = append(associationForeignKeys, field.DBName)
+ }
+ }
+
+ for idx, name := range associationForeignKeys {
+ if field, ok := toScope.FieldByName(name); ok {
+ // association foreign keys (db names)
+ relationship.AssociationForeignFieldNames = append(relationship.AssociationForeignFieldNames, field.DBName)
+
+ // setup join table foreign keys for association
+ if len(associationJoinTableDBNames) > idx {
+ relationship.AssociationForeignDBNames = append(relationship.AssociationForeignDBNames, associationJoinTableDBNames[idx])
+ } else {
+ // join table foreign keys for association
+ joinTableDBName := ToColumnName(elemType.Name()) + "_" + field.DBName
+ relationship.AssociationForeignDBNames = append(relationship.AssociationForeignDBNames, joinTableDBName)
+ }
+ }
+ }
+ }
+
+ joinTableHandler := JoinTableHandler{}
+ joinTableHandler.Setup(relationship, ToTableName(many2many), reflectType, elemType)
+ relationship.JoinTableHandler = &joinTableHandler
+ field.Relationship = relationship
+ } else {
+ // User has many comments, associationType is User, comment use UserID as foreign key
+ var associationType = reflectType.Name()
+ var toFields = toScope.GetStructFields()
+ relationship.Kind = "has_many"
+
+ if polymorphic, _ := field.TagSettingsGet("POLYMORPHIC"); polymorphic != "" {
+ // Dog has many toys, tag polymorphic is Owner, then associationType is Owner
+ // Toy use OwnerID, OwnerType ('dogs') as foreign key
+ if polymorphicType := getForeignField(polymorphic+"Type", toFields); polymorphicType != nil {
+ associationType = polymorphic
+ relationship.PolymorphicType = polymorphicType.Name
+ relationship.PolymorphicDBName = polymorphicType.DBName
+ // if Dog has multiple set of toys set name of the set (instead of default 'dogs')
+ if value, ok := field.TagSettingsGet("POLYMORPHIC_VALUE"); ok {
+ relationship.PolymorphicValue = value
+ } else {
+ relationship.PolymorphicValue = scope.TableName()
+ }
+ polymorphicType.IsForeignKey = true
+ }
+ }
+
+ // if no foreign keys defined with tag
+ if len(foreignKeys) == 0 {
+ // if no association foreign keys defined with tag
+ if len(associationForeignKeys) == 0 {
+ for _, field := range modelStruct.PrimaryFields {
+ foreignKeys = append(foreignKeys, associationType+field.Name)
+ associationForeignKeys = append(associationForeignKeys, field.Name)
+ }
+ } else {
+ // generate foreign keys from defined association foreign keys
+ for _, scopeFieldName := range associationForeignKeys {
+ if foreignField := getForeignField(scopeFieldName, modelStruct.StructFields); foreignField != nil {
+ foreignKeys = append(foreignKeys, associationType+foreignField.Name)
+ associationForeignKeys = append(associationForeignKeys, foreignField.Name)
+ }
+ }
+ }
+ } else {
+ // generate association foreign keys from foreign keys
+ if len(associationForeignKeys) == 0 {
+ for _, foreignKey := range foreignKeys {
+ if strings.HasPrefix(foreignKey, associationType) {
+ associationForeignKey := strings.TrimPrefix(foreignKey, associationType)
+ if foreignField := getForeignField(associationForeignKey, modelStruct.StructFields); foreignField != nil {
+ associationForeignKeys = append(associationForeignKeys, associationForeignKey)
+ }
+ }
+ }
+ if len(associationForeignKeys) == 0 && len(foreignKeys) == 1 {
+ associationForeignKeys = []string{scope.PrimaryKey()}
+ }
+ } else if len(foreignKeys) != len(associationForeignKeys) {
+ scope.Err(errors.New("invalid foreign keys, should have same length"))
+ return
+ }
+ }
+
+ for idx, foreignKey := range foreignKeys {
+ if foreignField := getForeignField(foreignKey, toFields); foreignField != nil {
+ if associationField := getForeignField(associationForeignKeys[idx], modelStruct.StructFields); associationField != nil {
+ // source foreign keys
+ foreignField.IsForeignKey = true
+ relationship.AssociationForeignFieldNames = append(relationship.AssociationForeignFieldNames, associationField.Name)
+ relationship.AssociationForeignDBNames = append(relationship.AssociationForeignDBNames, associationField.DBName)
+
+ // association foreign keys
+ relationship.ForeignFieldNames = append(relationship.ForeignFieldNames, foreignField.Name)
+ relationship.ForeignDBNames = append(relationship.ForeignDBNames, foreignField.DBName)
+ }
+ }
+ }
+
+ if len(relationship.ForeignFieldNames) != 0 {
+ field.Relationship = relationship
+ }
+ }
+ } else {
+ field.IsNormal = true
+ }
+ }(field)
+ case reflect.Struct:
+ defer func(field *StructField) {
+ var (
+ // user has one profile, associationType is User, profile use UserID as foreign key
+ // user belongs to profile, associationType is Profile, user use ProfileID as foreign key
+ associationType = reflectType.Name()
+ relationship = &Relationship{}
+ toScope = scope.New(reflect.New(field.Struct.Type).Interface())
+ toFields = toScope.GetStructFields()
+ tagForeignKeys []string
+ tagAssociationForeignKeys []string
+ )
+
+ if foreignKey, _ := field.TagSettingsGet("FOREIGNKEY"); foreignKey != "" {
+ tagForeignKeys = strings.Split(foreignKey, ",")
+ }
+
+ if foreignKey, _ := field.TagSettingsGet("ASSOCIATION_FOREIGNKEY"); foreignKey != "" {
+ tagAssociationForeignKeys = strings.Split(foreignKey, ",")
+ } else if foreignKey, _ := field.TagSettingsGet("ASSOCIATIONFOREIGNKEY"); foreignKey != "" {
+ tagAssociationForeignKeys = strings.Split(foreignKey, ",")
+ }
+
+ if polymorphic, _ := field.TagSettingsGet("POLYMORPHIC"); polymorphic != "" {
+ // Cat has one toy, tag polymorphic is Owner, then associationType is Owner
+ // Toy use OwnerID, OwnerType ('cats') as foreign key
+ if polymorphicType := getForeignField(polymorphic+"Type", toFields); polymorphicType != nil {
+ associationType = polymorphic
+ relationship.PolymorphicType = polymorphicType.Name
+ relationship.PolymorphicDBName = polymorphicType.DBName
+ // if Cat has several different types of toys set name for each (instead of default 'cats')
+ if value, ok := field.TagSettingsGet("POLYMORPHIC_VALUE"); ok {
+ relationship.PolymorphicValue = value
+ } else {
+ relationship.PolymorphicValue = scope.TableName()
+ }
+ polymorphicType.IsForeignKey = true
+ }
+ }
+
+ // Has One
+ {
+ var foreignKeys = tagForeignKeys
+ var associationForeignKeys = tagAssociationForeignKeys
+ // if no foreign keys defined with tag
+ if len(foreignKeys) == 0 {
+ // if no association foreign keys defined with tag
+ if len(associationForeignKeys) == 0 {
+ for _, primaryField := range modelStruct.PrimaryFields {
+ foreignKeys = append(foreignKeys, associationType+primaryField.Name)
+ associationForeignKeys = append(associationForeignKeys, primaryField.Name)
+ }
+ } else {
+ // generate foreign keys form association foreign keys
+ for _, associationForeignKey := range tagAssociationForeignKeys {
+ if foreignField := getForeignField(associationForeignKey, modelStruct.StructFields); foreignField != nil {
+ foreignKeys = append(foreignKeys, associationType+foreignField.Name)
+ associationForeignKeys = append(associationForeignKeys, foreignField.Name)
+ }
+ }
+ }
+ } else {
+ // generate association foreign keys from foreign keys
+ if len(associationForeignKeys) == 0 {
+ for _, foreignKey := range foreignKeys {
+ if strings.HasPrefix(foreignKey, associationType) {
+ associationForeignKey := strings.TrimPrefix(foreignKey, associationType)
+ if foreignField := getForeignField(associationForeignKey, modelStruct.StructFields); foreignField != nil {
+ associationForeignKeys = append(associationForeignKeys, associationForeignKey)
+ }
+ }
+ }
+ if len(associationForeignKeys) == 0 && len(foreignKeys) == 1 {
+ associationForeignKeys = []string{scope.PrimaryKey()}
+ }
+ } else if len(foreignKeys) != len(associationForeignKeys) {
+ scope.Err(errors.New("invalid foreign keys, should have same length"))
+ return
+ }
+ }
+
+ for idx, foreignKey := range foreignKeys {
+ if foreignField := getForeignField(foreignKey, toFields); foreignField != nil {
+ if scopeField := getForeignField(associationForeignKeys[idx], modelStruct.StructFields); scopeField != nil {
+ foreignField.IsForeignKey = true
+ // source foreign keys
+ relationship.AssociationForeignFieldNames = append(relationship.AssociationForeignFieldNames, scopeField.Name)
+ relationship.AssociationForeignDBNames = append(relationship.AssociationForeignDBNames, scopeField.DBName)
+
+ // association foreign keys
+ relationship.ForeignFieldNames = append(relationship.ForeignFieldNames, foreignField.Name)
+ relationship.ForeignDBNames = append(relationship.ForeignDBNames, foreignField.DBName)
+ }
+ }
+ }
+ }
+
+ if len(relationship.ForeignFieldNames) != 0 {
+ relationship.Kind = "has_one"
+ field.Relationship = relationship
+ } else {
+ var foreignKeys = tagForeignKeys
+ var associationForeignKeys = tagAssociationForeignKeys
+
+ if len(foreignKeys) == 0 {
+ // generate foreign keys & association foreign keys
+ if len(associationForeignKeys) == 0 {
+ for _, primaryField := range toScope.PrimaryFields() {
+ foreignKeys = append(foreignKeys, field.Name+primaryField.Name)
+ associationForeignKeys = append(associationForeignKeys, primaryField.Name)
+ }
+ } else {
+ // generate foreign keys with association foreign keys
+ for _, associationForeignKey := range associationForeignKeys {
+ if foreignField := getForeignField(associationForeignKey, toFields); foreignField != nil {
+ foreignKeys = append(foreignKeys, field.Name+foreignField.Name)
+ associationForeignKeys = append(associationForeignKeys, foreignField.Name)
+ }
+ }
+ }
+ } else {
+ // generate foreign keys & association foreign keys
+ if len(associationForeignKeys) == 0 {
+ for _, foreignKey := range foreignKeys {
+ if strings.HasPrefix(foreignKey, field.Name) {
+ associationForeignKey := strings.TrimPrefix(foreignKey, field.Name)
+ if foreignField := getForeignField(associationForeignKey, toFields); foreignField != nil {
+ associationForeignKeys = append(associationForeignKeys, associationForeignKey)
+ }
+ }
+ }
+ if len(associationForeignKeys) == 0 && len(foreignKeys) == 1 {
+ associationForeignKeys = []string{toScope.PrimaryKey()}
+ }
+ } else if len(foreignKeys) != len(associationForeignKeys) {
+ scope.Err(errors.New("invalid foreign keys, should have same length"))
+ return
+ }
+ }
+
+ for idx, foreignKey := range foreignKeys {
+ if foreignField := getForeignField(foreignKey, modelStruct.StructFields); foreignField != nil {
+ if associationField := getForeignField(associationForeignKeys[idx], toFields); associationField != nil {
+ foreignField.IsForeignKey = true
+
+ // association foreign keys
+ relationship.AssociationForeignFieldNames = append(relationship.AssociationForeignFieldNames, associationField.Name)
+ relationship.AssociationForeignDBNames = append(relationship.AssociationForeignDBNames, associationField.DBName)
+
+ // source foreign keys
+ relationship.ForeignFieldNames = append(relationship.ForeignFieldNames, foreignField.Name)
+ relationship.ForeignDBNames = append(relationship.ForeignDBNames, foreignField.DBName)
+ }
+ }
+ }
+
+ if len(relationship.ForeignFieldNames) != 0 {
+ relationship.Kind = "belongs_to"
+ field.Relationship = relationship
+ }
+ }
+ }(field)
+ default:
+ field.IsNormal = true
+ }
+ }
+ }
+
+ // Even it is ignored, also possible to decode db value into the field
+ if value, ok := field.TagSettingsGet("COLUMN"); ok {
+ field.DBName = value
+ } else {
+ field.DBName = ToColumnName(fieldStruct.Name)
+ }
+
+ modelStruct.StructFields = append(modelStruct.StructFields, field)
+ }
+ }
+
+ if len(modelStruct.PrimaryFields) == 0 {
+ if field := getForeignField("id", modelStruct.StructFields); field != nil {
+ field.IsPrimaryKey = true
+ modelStruct.PrimaryFields = append(modelStruct.PrimaryFields, field)
+ }
+ }
+
+ modelStructsMap.Store(reflectType, &modelStruct)
+
+ return &modelStruct
+}
+
+// GetStructFields get model's field structs
+func (scope *Scope) GetStructFields() (fields []*StructField) {
+ return scope.GetModelStruct().StructFields
+}
+
+func parseTagSetting(tags reflect.StructTag) map[string]string {
+ setting := map[string]string{}
+ for _, str := range []string{tags.Get("sql"), tags.Get("gorm")} {
+ tags := strings.Split(str, ";")
+ for _, value := range tags {
+ v := strings.Split(value, ":")
+ k := strings.TrimSpace(strings.ToUpper(v[0]))
+ if len(v) >= 2 {
+ setting[k] = strings.Join(v[1:], ":")
+ } else {
+ setting[k] = k
+ }
+ }
+ }
+ return setting
+}
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