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https://github.com/gohugoio/hugo.git
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45 lines
1.2 KiB
Go
45 lines
1.2 KiB
Go
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// Copyright 2018 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package maps
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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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// ToLower makes all the keys in the given map lower cased and will do so
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// recursively.
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// Notes:
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// * This will modify the map given.
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// * Any nested map[interface{}]interface{} will be converted to map[string]interface{}.
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func ToLower(m map[string]interface{}) {
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for k, v := range m {
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switch v.(type) {
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case map[interface{}]interface{}:
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v = cast.ToStringMap(v)
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ToLower(v.(map[string]interface{}))
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case map[string]interface{}:
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ToLower(v.(map[string]interface{}))
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}
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lKey := strings.ToLower(k)
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if k != lKey {
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delete(m, k)
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m[lKey] = v
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}
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}
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}
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