github.com/dominikszabo/hugo-ds-clean@v0.47.1/hugolib/pagesPrevNext.go (about) 1 // Copyright 2015 The Hugo Authors. All rights reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // http://www.apache.org/licenses/LICENSE-2.0 7 // 8 // Unless required by applicable law or agreed to in writing, software 9 // distributed under the License is distributed on an "AS IS" BASIS, 10 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 11 // See the License for the specific language governing permissions and 12 // limitations under the License. 13 14 package hugolib 15 16 // Prev returns the previous page reletive to the given page. 17 func (p Pages) Prev(cur *Page) *Page { 18 for x, c := range p { 19 if c.Eq(cur) { 20 if x == 0 { 21 // TODO(bep) consider return nil here to get it line with the other Prevs 22 return p[len(p)-1] 23 } 24 return p[x-1] 25 } 26 } 27 return nil 28 } 29 30 // Next returns the next page reletive to the given page. 31 func (p Pages) Next(cur *Page) *Page { 32 for x, c := range p { 33 if c.Eq(cur) { 34 if x < len(p)-1 { 35 return p[x+1] 36 } 37 // TODO(bep) consider return nil here to get it line with the other Nexts 38 return p[0] 39 } 40 } 41 return nil 42 }