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package javaproperties |
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import ( |
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"strings" |
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"github.com/spf13/cast" |
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) |
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// THIS CODE IS COPIED HERE: IT SHOULD NOT BE MODIFIED |
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// AT SOME POINT IT WILL BE MOVED TO A COMMON PLACE |
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// deepSearch scans deep maps, following the key indexes listed in the |
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// sequence "path". |
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// The last value is expected to be another map, and is returned. |
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// |
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// In case intermediate keys do not exist, or map to a non-map value, |
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// a new map is created and inserted, and the search continues from there: |
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// the initial map "m" may be modified! |
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func deepSearch(m map[string]interface{}, path []string) map[string]interface{} { |
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for _, k := range path { |
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m2, ok := m[k] |
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if !ok { |
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// intermediate key does not exist |
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// => create it and continue from there |
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m3 := make(map[string]interface{}) |
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m[k] = m3 |
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m = m3 |
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continue |
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} |
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m3, ok := m2.(map[string]interface{}) |
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if !ok { |
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// intermediate key is a value |
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// => replace with a new map |
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m3 = make(map[string]interface{}) |
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m[k] = m3 |
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} |
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// continue search from here |
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m = m3 |
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} |
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return m |
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} |
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// flattenAndMergeMap recursively flattens the given map into a new map |
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// Code is based on the function with the same name in tha main package. |
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// TODO: move it to a common place |
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func flattenAndMergeMap(shadow map[string]interface{}, m map[string]interface{}, prefix string, delimiter string) map[string]interface{} { |
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if shadow != nil && prefix != "" && shadow[prefix] != nil { |
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// prefix is shadowed => nothing more to flatten |
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return shadow |
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} |
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if shadow == nil { |
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shadow = make(map[string]interface{}) |
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} |
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var m2 map[string]interface{} |
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if prefix != "" { |
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prefix += delimiter |
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} |
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for k, val := range m { |
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fullKey := prefix + k |
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switch val.(type) { |
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case map[string]interface{}: |
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m2 = val.(map[string]interface{}) |
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case map[interface{}]interface{}: |
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m2 = cast.ToStringMap(val) |
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default: |
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// immediate value |
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shadow[strings.ToLower(fullKey)] = val |
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continue |
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} |
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// recursively merge to shadow map |
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shadow = flattenAndMergeMap(shadow, m2, fullKey, delimiter) |
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} |
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return shadow |
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} |