hugo/hugolib/page__tree.go
2020-12-03 13:12:58 +01:00

189 lines
3.4 KiB
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 (
"path"
"strings"
"github.com/gohugoio/hugo/common/types"
"github.com/gohugoio/hugo/resources/page"
)
type pageTree struct {
p *pageState
}
func (pt pageTree) IsAncestor(other interface{}) (bool, error) {
if pt.p == nil {
return false, nil
}
tp, ok := other.(treeRefProvider)
if !ok {
return false, nil
}
ref1, ref2 := pt.p.getTreeRef(), tp.getTreeRef()
if ref1 != nil && ref1.key == "/" {
return true, nil
}
if ref1 == nil || ref2 == nil {
if ref1 == nil {
// A 404 or other similar standalone page.
return false, nil
}
return ref1.n.p.IsHome(), nil
}
if ref1.key == ref2.key {
return true, nil
}
if strings.HasPrefix(ref2.key, ref1.key) {
return true, nil
}
return strings.HasPrefix(ref2.key, ref1.key+cmBranchSeparator), nil
}
func (pt pageTree) CurrentSection() page.Page {
p := pt.p
if p.IsHome() || p.IsSection() {
return p
}
return p.Parent()
}
func (pt pageTree) IsDescendant(other interface{}) (bool, error) {
if pt.p == nil {
return false, nil
}
tp, ok := other.(treeRefProvider)
if !ok {
return false, nil
}
ref1, ref2 := pt.p.getTreeRef(), tp.getTreeRef()
if ref2 != nil && ref2.key == "/" {
return true, nil
}
if ref1 == nil || ref2 == nil {
if ref2 == nil {
// A 404 or other similar standalone page.
return false, nil
}
return ref2.n.p.IsHome(), nil
}
if ref1.key == ref2.key {
return true, nil
}
if strings.HasPrefix(ref1.key, ref2.key) {
return true, nil
}
return strings.HasPrefix(ref1.key, ref2.key+cmBranchSeparator), nil
}
func (pt pageTree) FirstSection() page.Page {
ref := pt.p.getTreeRef()
if ref == nil {
return pt.p.s.home
}
key := ref.key
if !ref.isSection() {
key = path.Dir(key)
}
_, b := ref.m.getFirstSection(key)
if b == nil {
return nil
}
return b.p
}
func (pt pageTree) InSection(other interface{}) (bool, error) {
if pt.p == nil || types.IsNil(other) {
return false, nil
}
tp, ok := other.(treeRefProvider)
if !ok {
return false, nil
}
ref1, ref2 := pt.p.getTreeRef(), tp.getTreeRef()
if ref1 == nil || ref2 == nil {
if ref1 == nil {
// A 404 or other similar standalone page.
return false, nil
}
return ref1.n.p.IsHome(), nil
}
s1, _ := ref1.getCurrentSection()
s2, _ := ref2.getCurrentSection()
return s1 == s2, nil
}
func (pt pageTree) Page() page.Page {
return pt.p
}
func (pt pageTree) Parent() page.Page {
p := pt.p
if p.parent != nil {
return p.parent
}
if pt.p.IsHome() {
return nil
}
tree := p.getTreeRef()
if tree == nil || pt.p.Kind() == page.KindTaxonomy {
return pt.p.s.home
}
_, b := tree.getSection()
if b == nil {
return nil
}
return b.p
}
func (pt pageTree) Sections() page.Pages {
if pt.p.bucket == nil {
return nil
}
return pt.p.bucket.getSections()
}