hugo/hugolib/handler_meta.go
Bjørn Erik Pedersen ed0985404d Render the shortcodes as late as possible
This is needed to make shortcode users happy with the new multilanguage support,
but it will also solve many other related posts about "stuff not available in the shortcode".

We will have to revisit this re the handler chain at some point, but that will be easier
now as the integration test story has improved so much.

As part of this commit, the site-building tests in page_test.go is refreshed, they now
tests for all the rendering engines (when available), and all of them now uses the
same code-path as used in production.

Fixes #1229
Fixes #2323
Fixes ##1076
2016-09-06 18:32:16 +03:00

117 lines
2.5 KiB
Go

// Copyright 2015 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 hugolib
import (
"errors"
"fmt"
"github.com/spf13/hugo/source"
)
var handlers []Handler
type MetaHandler interface {
// Read the Files in and register
Read(*source.File, *Site, HandleResults)
// Generic Convert Function with coordination
Convert(interface{}, *Site, HandleResults)
Handle() Handler
}
type HandleResults chan<- HandledResult
func NewMetaHandler(in string) *MetaHandle {
x := &MetaHandle{ext: in}
x.Handler()
return x
}
type MetaHandle struct {
handler Handler
ext string
}
func (mh *MetaHandle) Read(f *source.File, s *Site, results HandleResults) {
if h := mh.Handler(); h != nil {
results <- h.Read(f, s)
return
}
results <- HandledResult{err: errors.New("No handler found"), file: f}
}
func (mh *MetaHandle) Convert(i interface{}, s *Site, results HandleResults) {
h := mh.Handler()
if f, ok := i.(*source.File); ok {
results <- h.FileConvert(f, s)
return
}
if p, ok := i.(*Page); ok {
if p == nil {
results <- HandledResult{err: errors.New("file resulted in a nil page")}
return
}
if h == nil {
results <- HandledResult{err: fmt.Errorf("No handler found for page '%s'. Verify the markup is supported by Hugo.", p.FullFilePath())}
return
}
results <- h.PageConvert(p, s.Tmpl)
}
}
func (mh *MetaHandle) Handler() Handler {
if mh.handler == nil {
mh.handler = FindHandler(mh.ext)
// if no handler found, use default handler
if mh.handler == nil {
mh.handler = FindHandler("*")
}
}
return mh.handler
}
func FindHandler(ext string) Handler {
for _, h := range Handlers() {
if HandlerMatch(h, ext) {
return h
}
}
return nil
}
func HandlerMatch(h Handler, ext string) bool {
for _, x := range h.Extensions() {
if ext == x {
return true
}
}
return false
}
func RegisterHandler(h Handler) {
handlers = append(handlers, h)
}
func Handlers() []Handler {
return handlers
}