mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-21 20:46:30 -05:00
145 lines
2.9 KiB
Go
145 lines
2.9 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 page
|
|
|
|
import (
|
|
"fmt"
|
|
"math/rand"
|
|
|
|
"github.com/gohugoio/hugo/compare"
|
|
|
|
"github.com/gohugoio/hugo/resources/resource"
|
|
)
|
|
|
|
var (
|
|
_ resource.ResourcesConverter = Pages{}
|
|
_ compare.ProbablyEqer = Pages{}
|
|
)
|
|
|
|
// Pages is a slice of pages. This is the most common list type in Hugo.
|
|
type Pages []Page
|
|
|
|
func (ps Pages) String() string {
|
|
return fmt.Sprintf("Pages(%d)", len(ps))
|
|
}
|
|
|
|
// Used in tests.
|
|
func (ps Pages) shuffle() {
|
|
for i := range ps {
|
|
j := rand.Intn(i + 1)
|
|
ps[i], ps[j] = ps[j], ps[i]
|
|
}
|
|
}
|
|
|
|
// ToResources wraps resource.ResourcesConverter
|
|
func (pages Pages) ToResources() resource.Resources {
|
|
r := make(resource.Resources, len(pages))
|
|
for i, p := range pages {
|
|
r[i] = p
|
|
}
|
|
return r
|
|
}
|
|
|
|
// ToPages tries to convert seq into Pages.
|
|
func ToPages(seq interface{}) (Pages, error) {
|
|
if seq == nil {
|
|
return Pages{}, nil
|
|
}
|
|
|
|
switch v := seq.(type) {
|
|
case Pages:
|
|
return v, nil
|
|
case *Pages:
|
|
return *(v), nil
|
|
case WeightedPages:
|
|
return v.Pages(), nil
|
|
case PageGroup:
|
|
return v.Pages, nil
|
|
case []interface{}:
|
|
pages := make(Pages, len(v))
|
|
success := true
|
|
for i, vv := range v {
|
|
p, ok := vv.(Page)
|
|
if !ok {
|
|
success = false
|
|
break
|
|
}
|
|
pages[i] = p
|
|
}
|
|
if success {
|
|
return pages, nil
|
|
}
|
|
}
|
|
|
|
return nil, fmt.Errorf("cannot convert type %T to Pages", seq)
|
|
}
|
|
|
|
func (p Pages) Group(key interface{}, in interface{}) (interface{}, error) {
|
|
pages, err := ToPages(in)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return PageGroup{Key: key, Pages: pages}, nil
|
|
}
|
|
|
|
// Len returns the number of pages in the list.
|
|
func (p Pages) Len() int {
|
|
return len(p)
|
|
}
|
|
|
|
// ProbablyEq wraps comare.ProbablyEqer
|
|
func (pages Pages) ProbablyEq(other interface{}) bool {
|
|
otherPages, ok := other.(Pages)
|
|
if !ok {
|
|
return false
|
|
}
|
|
|
|
if len(pages) != len(otherPages) {
|
|
return false
|
|
}
|
|
|
|
step := 1
|
|
|
|
for i := 0; i < len(pages); i += step {
|
|
if !pages[i].Eq(otherPages[i]) {
|
|
return false
|
|
}
|
|
|
|
if i > 50 {
|
|
// This is most likely the same.
|
|
step = 50
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
func (ps Pages) removeFirstIfFound(p Page) Pages {
|
|
ii := -1
|
|
for i, pp := range ps {
|
|
if p.Eq(pp) {
|
|
ii = i
|
|
break
|
|
}
|
|
}
|
|
|
|
if ii != -1 {
|
|
ps = append(ps[:ii], ps[ii+1:]...)
|
|
}
|
|
return ps
|
|
}
|
|
|
|
// PagesFactory somehow creates some Pages.
|
|
// We do a lot of lazy Pages initialization in Hugo, so we need a type.
|
|
type PagesFactory func() Pages
|