mirror of https://github.com/gohugoio/hugo.git
137 lines
3.6 KiB
Go
137 lines
3.6 KiB
Go
// Copyright 2017-present The Hugo Authors. All rights reserved.
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//
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// Portions Copyright The Go Authors.
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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 tplimpl
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import (
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"reflect"
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"strings"
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"github.com/gohugoio/hugo/common/maps"
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template "github.com/gohugoio/hugo/tpl/internal/go_templates/htmltemplate"
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texttemplate "github.com/gohugoio/hugo/tpl/internal/go_templates/texttemplate"
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"github.com/gohugoio/hugo/deps"
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"github.com/gohugoio/hugo/tpl/internal"
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// Init the namespaces
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_ "github.com/gohugoio/hugo/tpl/cast"
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_ "github.com/gohugoio/hugo/tpl/collections"
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_ "github.com/gohugoio/hugo/tpl/compare"
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_ "github.com/gohugoio/hugo/tpl/crypto"
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_ "github.com/gohugoio/hugo/tpl/data"
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_ "github.com/gohugoio/hugo/tpl/encoding"
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_ "github.com/gohugoio/hugo/tpl/fmt"
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_ "github.com/gohugoio/hugo/tpl/hugo"
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_ "github.com/gohugoio/hugo/tpl/images"
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_ "github.com/gohugoio/hugo/tpl/inflect"
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_ "github.com/gohugoio/hugo/tpl/lang"
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_ "github.com/gohugoio/hugo/tpl/math"
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_ "github.com/gohugoio/hugo/tpl/os"
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_ "github.com/gohugoio/hugo/tpl/partials"
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_ "github.com/gohugoio/hugo/tpl/path"
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_ "github.com/gohugoio/hugo/tpl/reflect"
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_ "github.com/gohugoio/hugo/tpl/resources"
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_ "github.com/gohugoio/hugo/tpl/safe"
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_ "github.com/gohugoio/hugo/tpl/site"
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_ "github.com/gohugoio/hugo/tpl/strings"
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_ "github.com/gohugoio/hugo/tpl/templates"
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_ "github.com/gohugoio/hugo/tpl/time"
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_ "github.com/gohugoio/hugo/tpl/transform"
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_ "github.com/gohugoio/hugo/tpl/urls"
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)
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var _ texttemplate.ExecHelper = (*templateExecHelper)(nil)
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var zero reflect.Value
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type templateExecHelper struct {
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funcs map[string]reflect.Value
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}
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func (t *templateExecHelper) GetFunc(name string) (reflect.Value, bool) {
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if fn, found := t.funcs[name]; found {
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return fn, true
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}
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return zero, false
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}
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func (t *templateExecHelper) GetMapValue(receiver, key reflect.Value) (reflect.Value, bool) {
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if params, ok := receiver.Interface().(maps.Params); ok {
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// Case insensitive.
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keystr := strings.ToLower(key.String())
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v, found := params[keystr]
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if !found {
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return zero, false
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}
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return reflect.ValueOf(v), true
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}
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v := receiver.MapIndex(key)
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return v, v.IsValid()
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}
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func newTemplateExecuter(d *deps.Deps) (texttemplate.Executer, map[string]reflect.Value) {
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funcs := createFuncMap(d)
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funcsv := make(map[string]reflect.Value)
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for k, v := range funcs {
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funcsv[k] = reflect.ValueOf(v)
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}
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exeHelper := &templateExecHelper{
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funcs: funcsv,
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}
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return texttemplate.NewExecuter(
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exeHelper,
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), funcsv
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}
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func createFuncMap(d *deps.Deps) map[string]interface{} {
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funcMap := template.FuncMap{}
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// Merge the namespace funcs
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for _, nsf := range internal.TemplateFuncsNamespaceRegistry {
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ns := nsf(d)
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if _, exists := funcMap[ns.Name]; exists {
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panic(ns.Name + " is a duplicate template func")
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}
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funcMap[ns.Name] = ns.Context
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for _, mm := range ns.MethodMappings {
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for _, alias := range mm.Aliases {
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if _, exists := funcMap[alias]; exists {
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panic(alias + " is a duplicate template func")
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}
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funcMap[alias] = mm.Method
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}
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}
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}
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if d.OverloadedTemplateFuncs != nil {
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for k, v := range d.OverloadedTemplateFuncs {
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funcMap[k] = v
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}
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}
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return funcMap
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}
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