ref: d6ed17c60fd13c933347110c720afa09e04df1c8
dir: /hugolib/page__ref.go/
// Copyright 2019 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 (
"fmt"
"github.com/gohugoio/hugo/common/text"
"github.com/mitchellh/mapstructure"
"github.com/pkg/errors"
)
func newPageRef(p *pageState) pageRef {
return pageRef{p: p}
}
type pageRef struct {
p *pageState
}
func (p pageRef) Ref(argsm map[string]interface{}) (string, error) {
return p.ref(argsm, p.p)
}
func (p pageRef) RefFrom(argsm map[string]interface{}, source interface{}) (string, error) {
return p.ref(argsm, source)
}
func (p pageRef) RelRef(argsm map[string]interface{}) (string, error) {
return p.relRef(argsm, p.p)
}
func (p pageRef) RelRefFrom(argsm map[string]interface{}, source interface{}) (string, error) {
return p.relRef(argsm, source)
}
func (p pageRef) decodeRefArgs(args map[string]interface{}) (refArgs, *Site, error) {
var ra refArgs
err := mapstructure.WeakDecode(args, &ra)
if err != nil {
return ra, nil, nil
}
s := p.p.s
if ra.Lang != "" && ra.Lang != p.p.s.Language().Lang {
// Find correct site
found := false
for _, ss := range p.p.s.h.Sites {
if ss.Lang() == ra.Lang {
found = true
s = ss
}
}
if !found {
p.p.s.siteRefLinker.logNotFound(ra.Path, fmt.Sprintf("no site found with lang %q", ra.Lang), nil, text.Position{})
return ra, nil, nil
}
}
return ra, s, nil
}
func (p pageRef) ref(argsm map[string]interface{}, source interface{}) (string, error) {
args, s, err := p.decodeRefArgs(argsm)
if err != nil {
return "", errors.Wrap(err, "invalid arguments to Ref")
}
if s == nil {
return p.p.s.siteRefLinker.notFoundURL, nil
}
if args.Path == "" {
return "", nil
}
return s.refLink(args.Path, source, false, args.OutputFormat)
}
func (p pageRef) relRef(argsm map[string]interface{}, source interface{}) (string, error) {
args, s, err := p.decodeRefArgs(argsm)
if err != nil {
return "", errors.Wrap(err, "invalid arguments to Ref")
}
if s == nil {
return p.p.s.siteRefLinker.notFoundURL, nil
}
if args.Path == "" {
return "", nil
}
return s.refLink(args.Path, source, true, args.OutputFormat)
}
type refArgs struct {
Path string
Lang string
OutputFormat string
}