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// Copyright 2018 The Hugo Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package maps
import (
"fmt"
"strings"
"github.com/gohugoio/hugo/common/types"
"github.com/gobwas/glob"
"github.com/spf13/cast"
)
// ToStringMapE converts in to map[string]interface{}.
func ToStringMapE(in any) (map[string]any, error) {
switch vv := in.(type) {
case Params:
return vv, nil
case map[string]string:
m := map[string]any{}
for k, v := range vv {
m[k] = v
}
return m, nil
default:
return cast.ToStringMapE(in)
}
}
// ToParamsAndPrepare converts in to Params and prepares it for use.
// If in is nil, an empty map is returned.
// See PrepareParams.
func ToParamsAndPrepare(in any) (Params, error) {
if types.IsNil(in) {
return Params{}, nil
}
m, err := ToStringMapE(in)
if err != nil {
return nil, err
}
PrepareParams(m)
return m, nil
}
// MustToParamsAndPrepare calls ToParamsAndPrepare and panics if it fails.
func MustToParamsAndPrepare(in any) Params {
p, err := ToParamsAndPrepare(in)
if err != nil {
panic(fmt.Sprintf("cannot convert %T to maps.Params: %s", in, err))
}
return p
}
// ToStringMap converts in to map[string]interface{}.
func ToStringMap(in any) map[string]any {
m, _ := ToStringMapE(in)
return m
}
// ToStringMapStringE converts in to map[string]string.
func ToStringMapStringE(in any) (map[string]string, error) {
m, err := ToStringMapE(in)
if err != nil {
return nil, err
}
return cast.ToStringMapStringE(m)
}
// ToStringMapString converts in to map[string]string.
func ToStringMapString(in any) map[string]string {
m, _ := ToStringMapStringE(in)
return m
}
// ToStringMapBool converts in to bool.
func ToStringMapBool(in any) map[string]bool {
m, _ := ToStringMapE(in)
return cast.ToStringMapBool(m)
}
// ToSliceStringMap converts in to []map[string]interface{}.
func ToSliceStringMap(in any) ([]map[string]any, error) {
switch v := in.(type) {
case []map[string]any:
return v, nil
case Params:
return []map[string]any{v}, nil
case []any:
var s []map[string]any
for _, entry := range v {
if vv, ok := entry.(map[string]any); ok {
s = append(s, vv)
}
}
return s, nil
default:
return nil, fmt.Errorf("unable to cast %#v of type %T to []map[string]interface{}", in, in)
}
}
// LookupEqualFold finds key in m with case insensitive equality checks.
func LookupEqualFold[T any | string](m map[string]T, key string) (T, bool) {
if v, found := m[key]; found {
return v, true
}
for k, v := range m {
if strings.EqualFold(k, key) {
return v, true
}
}
var s T
return s, false
}
// MergeShallow merges src into dst, but only if the key does not already exist in dst.
// The keys are compared case insensitively.
func MergeShallow(dst, src map[string]any) {
for k, v := range src {
found := false
for dk := range dst {
if strings.EqualFold(dk, k) {
found = true
break
}
}
if !found {
dst[k] = v
}
}
}
type keyRename struct {
pattern glob.Glob
newKey string
}
// KeyRenamer supports renaming of keys in a map.
type KeyRenamer struct {
renames []keyRename
}
// NewKeyRenamer creates a new KeyRenamer given a list of pattern and new key
// value pairs.
func NewKeyRenamer(patternKeys ...string) (KeyRenamer, error) {
var renames []keyRename
for i := 0; i < len(patternKeys); i += 2 {
g, err := glob.Compile(strings.ToLower(patternKeys[i]), '/')
if err != nil {
return KeyRenamer{}, err
}
renames = append(renames, keyRename{pattern: g, newKey: patternKeys[i+1]})
}
return KeyRenamer{renames: renames}, nil
}
func (r KeyRenamer) getNewKey(keyPath string) string {
for _, matcher := range r.renames {
if matcher.pattern.Match(keyPath) {
return matcher.newKey
}
}
return ""
}
// Rename renames the keys in the given map according
// to the patterns in the current KeyRenamer.
func (r KeyRenamer) Rename(m map[string]any) {
r.renamePath("", m)
}
func (KeyRenamer) keyPath(k1, k2 string) string {
k1, k2 = strings.ToLower(k1), strings.ToLower(k2)
if k1 == "" {
return k2
}
return k1 + "/" + k2
}
func (r KeyRenamer) renamePath(parentKeyPath string, m map[string]any) {
for k, v := range m {
keyPath := r.keyPath(parentKeyPath, k)
switch vv := v.(type) {
case map[any]any:
r.renamePath(keyPath, cast.ToStringMap(vv))
case map[string]any:
r.renamePath(keyPath, vv)
}
newKey := r.getNewKey(keyPath)
if newKey != "" {
delete(m, k)
m[newKey] = v
}
}
}
// ConvertFloat64WithNoDecimalsToInt converts float64 values with no decimals to int recursively.
func ConvertFloat64WithNoDecimalsToInt(m map[string]any) {
for k, v := range m {
switch vv := v.(type) {
case float64:
if v == float64(int64(vv)) {
m[k] = int64(vv)
}
case map[string]any:
ConvertFloat64WithNoDecimalsToInt(vv)
case []any:
for i, vvv := range vv {
switch vvvv := vvv.(type) {
case float64:
if vvv == float64
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