48 lines
1.3 KiB
Go
48 lines
1.3 KiB
Go
// Copyright 2023 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package templates
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
)
|
|
|
|
func dictMerge(base map[string]any, arg any) bool {
|
|
if arg == nil {
|
|
return true
|
|
}
|
|
rv := reflect.ValueOf(arg)
|
|
if rv.Kind() == reflect.Map {
|
|
for _, k := range rv.MapKeys() {
|
|
base[k.String()] = rv.MapIndex(k).Interface()
|
|
}
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
// dict is a helper function for creating a map[string]any from a list of key-value pairs.
|
|
// If the key is dot ".", the value is merged into the base map, just like Golang template's dot syntax: dot means current
|
|
// The dot syntax is highly discouraged because it might cause unclear key conflicts. It's always good to use explicit keys.
|
|
func dict(args ...any) (map[string]any, error) {
|
|
if len(args)%2 != 0 {
|
|
return nil, fmt.Errorf("invalid dict constructor syntax: must have key-value pairs")
|
|
}
|
|
m := make(map[string]any, len(args)/2)
|
|
for i := 0; i < len(args); i += 2 {
|
|
key, ok := args[i].(string)
|
|
if !ok {
|
|
return nil, fmt.Errorf("invalid dict constructor syntax: unable to merge args[%d]", i)
|
|
}
|
|
if key == "." {
|
|
if ok = dictMerge(m, args[i+1]); !ok {
|
|
return nil, fmt.Errorf("invalid dict constructor syntax: dot arg[%d] must be followed by a dict", i)
|
|
}
|
|
} else {
|
|
m[key] = args[i+1]
|
|
}
|
|
}
|
|
return m, nil
|
|
}
|