hugo cast 源码
hugo cast 代码
文件路径：/tpl/cast/cast.go
// Copyright 2017 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 cast provides template functions for data type conversions.
package cast
import (
"html/template"
_cast "github.com/spf13/cast"
)
// New returns a new instance of the cast-namespaced template functions.
func New() *Namespace {
return &Namespace{}
}
// Namespace provides template functions for the "cast" namespace.
type Namespace struct {
}
// ToInt converts v to an int.
func (ns *Namespace) ToInt(v any) (int, error) {
v = convertTemplateToString(v)
return _cast.ToIntE(v)
}
// ToString converts v to a string.
func (ns *Namespace) ToString(v any) (string, error) {
return _cast.ToStringE(v)
}
// ToFloat converts v to a float.
func (ns *Namespace) ToFloat(v any) (float64, error) {
v = convertTemplateToString(v)
return _cast.ToFloat64E(v)
}
func convertTemplateToString(v any) any {
switch vv := v.(type) {
case template.HTML:
v = string(vv)
case template.CSS:
v = string(vv)
case template.HTMLAttr:
v = string(vv)
case template.JS:
v = string(vv)
case template.JSStr:
v = string(vv)
}
return v
}
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