mirror of https://github.com/gohugoio/hugo.git
87 lines
2.1 KiB
Go
87 lines
2.1 KiB
Go
// Copyright 2019 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 types contains types shared between packages in Hugo.
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package types
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import (
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"fmt"
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"reflect"
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"github.com/spf13/cast"
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)
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// RLocker represents the read locks in sync.RWMutex.
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type RLocker interface {
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RLock()
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RUnlock()
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}
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// KeyValueStr is a string tuple.
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type KeyValueStr struct {
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Key string
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Value string
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}
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// KeyValues holds an key and a slice of values.
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type KeyValues struct {
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Key interface{}
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Values []interface{}
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}
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// KeyString returns the key as a string, an empty string if conversion fails.
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func (k KeyValues) KeyString() string {
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return cast.ToString(k.Key)
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}
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func (k KeyValues) String() string {
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return fmt.Sprintf("%v: %v", k.Key, k.Values)
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}
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// NewKeyValuesStrings takes a given key and slice of values and returns a new
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// KeyValues struct.
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func NewKeyValuesStrings(key string, values ...string) KeyValues {
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iv := make([]interface{}, len(values))
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for i := 0; i < len(values); i++ {
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iv[i] = values[i]
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}
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return KeyValues{Key: key, Values: iv}
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}
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// Zeroer, as implemented by time.Time, will be used by the truth template
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// funcs in Hugo (if, with, not, and, or).
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type Zeroer interface {
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IsZero() bool
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}
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// IsNil reports whether v is nil.
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func IsNil(v interface{}) bool {
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if v == nil {
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return true
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}
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value := reflect.ValueOf(v)
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switch value.Kind() {
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case reflect.Chan, reflect.Func, reflect.Interface, reflect.Map, reflect.Ptr, reflect.Slice:
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return value.IsNil()
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}
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return false
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}
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// DevMarker is a marker interface for types that should only be used during
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// development.
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type DevMarker interface {
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DevOnly()
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}
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