62 lines
1.6 KiB
Go
62 lines
1.6 KiB
Go
package config
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import "fmt"
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// flatten flattens the nested struct.
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//
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// All keys will be joined by dot
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// e.g. {"a": {"b":"c"}} => {"a.b":"c"}
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// or {"a": {"b":[1,2]}} => {"a.b.0":1, "a.b.1": 2}
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func flatten(data map[string]interface{}) map[string]string {
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ret := make(map[string]string)
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for k, v := range data {
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switch typed := v.(type) {
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case map[interface{}]interface{}:
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for fk, fv := range flatten(convertMap(typed)) {
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ret[fmt.Sprintf("%s.%s", k, fk)] = fv
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}
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case map[string]interface{}:
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for fk, fv := range flatten(typed) {
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ret[fmt.Sprintf("%s.%s", k, fk)] = fv
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}
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case []interface{}:
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for fk, fv := range flattenSlice(typed) {
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ret[fmt.Sprintf("%s.%s", k, fk)] = fv
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}
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default:
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ret[k] = fmt.Sprint(typed)
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}
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}
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return ret
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}
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func flattenSlice(data []interface{}) map[string]string {
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ret := make(map[string]string)
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for idx, v := range data {
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switch typed := v.(type) {
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case map[interface{}]interface{}:
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for fk, fv := range flatten(convertMap(typed)) {
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ret[fmt.Sprintf("%d,%s", idx, fk)] = fv
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}
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case map[string]interface{}:
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for fk, fv := range flatten(typed) {
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ret[fmt.Sprintf("%d,%s", idx, fk)] = fv
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}
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case []interface{}:
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for fk, fv := range flattenSlice(typed) {
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ret[fmt.Sprintf("%d,%s", idx, fk)] = fv
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}
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default:
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ret[fmt.Sprint(idx)] = fmt.Sprint(typed)
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}
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}
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return ret
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}
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func convertMap(originalMap map[interface{}]interface{}) map[string]interface{} {
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convertedMap := map[string]interface{}{}
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for key, value := range originalMap {
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convertedMap[key.(string)] = value
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}
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return convertedMap
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}
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