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// Copyright 2017-present 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 tplimpl
import (
"fmt"
"html/template"
"strings"
texttemplate "text/template"
bp "github.com/gohugoio/hugo/bufferpool"
"github.com/gohugoio/hugo/deps"
)
// Some of the template funcs are'nt entirely stateless.
type templateFuncster struct {
funcMap template.FuncMap
*deps.Deps
}
func newTemplateFuncster(deps *deps.Deps) *templateFuncster {
return &templateFuncster{
Deps: deps,
}
}
// Partial executes the named partial and returns either a string,
// when called from text/template, for or a template.HTML.
func (t *templateFuncster) partial(name string, contextList ...interface{}) (interface{}, error) {
if strings.HasPrefix("partials/", name) {
name = name[8:]
}
var context interface{}
if len(contextList) == 0 {
context = nil
} else {
context = contextList[0]
}
for _, n := range []string{"partials/" + name, "theme/partials/" + name} {
templ := t.Tmpl.Lookup(n)
if templ == nil {
// For legacy reasons.
templ = t.Tmpl.Lookup(n + ".html")
}
if templ != nil {
b := bp.GetBuffer()
defer bp.PutBuffer(b)
if err := templ.Execute(b, context); err != nil {
return "", err
}
if _, ok := templ.Template.(*texttemplate.Template); ok {
return b.String(), nil
}
return template.HTML(b.String()), nil
}
}
return "", fmt.Errorf("Partial %q not found", name)
}
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