forked from gohugoio/hugo
-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
- Loading branch information
Showing
2 changed files
with
193 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,126 @@ | ||
// Copyright © 2014 Steve Francia <spf@spf13.com>. | ||
// | ||
// Licensed under the Simple Public 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://opensource.org/licenses/Simple-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" | ||
"reflect" | ||
"sort" | ||
) | ||
|
||
type PageGroup struct { | ||
Key interface{} | ||
Data Pages | ||
} | ||
|
||
type mapKeyValues []reflect.Value | ||
|
||
func (v mapKeyValues) Len() int { return len(v) } | ||
func (v mapKeyValues) Swap(i, j int) { v[i], v[j] = v[j], v[i] } | ||
|
||
type mapKeyByInt struct{ mapKeyValues } | ||
|
||
func (s mapKeyByInt) Less(i, j int) bool { return s.mapKeyValues[i].Int() < s.mapKeyValues[j].Int() } | ||
|
||
type mapKeyByStr struct{ mapKeyValues } | ||
|
||
func (s mapKeyByStr) Less(i, j int) bool { | ||
return s.mapKeyValues[i].String() < s.mapKeyValues[j].String() | ||
} | ||
|
||
func sortKeys(v []reflect.Value, order string) []reflect.Value { | ||
if len(v) <= 1 { | ||
return v | ||
} | ||
|
||
switch v[0].Kind() { | ||
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64: | ||
if order == "desc" { | ||
sort.Sort(sort.Reverse(mapKeyByInt{v})) | ||
} else { | ||
sort.Sort(mapKeyByInt{v}) | ||
} | ||
case reflect.String: | ||
if order == "desc" { | ||
sort.Sort(sort.Reverse(mapKeyByStr{v})) | ||
} else { | ||
sort.Sort(mapKeyByStr{v}) | ||
} | ||
} | ||
return v | ||
} | ||
|
||
func (p Pages) GroupBy(key, order string) ([]PageGroup, error) { | ||
if len(p) < 1 { | ||
return nil, nil | ||
} | ||
|
||
if order != "asc" && order != "desc" { | ||
return nil, errors.New("order argument must be 'asc' or 'desc'") | ||
} | ||
|
||
ppt := reflect.TypeOf(&Page{}) | ||
ft, ok := ppt.Elem().FieldByName(key) | ||
if !ok { | ||
return nil, errors.New("No such field in Page struct") | ||
} | ||
tmp := reflect.MakeMap(reflect.MapOf(ft.Type, reflect.SliceOf(ppt))) | ||
|
||
for _, e := range p { | ||
ppv := reflect.ValueOf(e) | ||
fv := ppv.Elem().FieldByName(key) | ||
if !tmp.MapIndex(fv).IsValid() { | ||
tmp.SetMapIndex(fv, reflect.MakeSlice(reflect.SliceOf(ppt), 0, 0)) | ||
} | ||
tmp.SetMapIndex(fv, reflect.Append(tmp.MapIndex(fv), ppv)) | ||
} | ||
|
||
var r []PageGroup | ||
for _, k := range sortKeys(tmp.MapKeys(), order) { | ||
r = append(r, PageGroup{Key: k.Interface(), Data: tmp.MapIndex(k).Interface().([]*Page)}) | ||
} | ||
|
||
return r, nil | ||
} | ||
|
||
func (p Pages) GroupByDate(format, order string) ([]PageGroup, error) { | ||
if len(p) < 1 { | ||
return nil, nil | ||
} | ||
|
||
if order != "asc" && order != "desc" { | ||
return nil, errors.New("order argument must be 'asc' or 'desc'") | ||
} | ||
|
||
sp := p.ByDate() | ||
if order == "desc" { | ||
sp = sp.Reverse() | ||
} | ||
|
||
date := sp[0].Date.Format(format) | ||
var r []PageGroup | ||
r = append(r, PageGroup{Key: date, Data: make(Pages, 0)}) | ||
r[0].Data = append(r[0].Data, sp[0]) | ||
|
||
i := 0 | ||
for _, e := range sp[1:] { | ||
date = e.Date.Format(format) | ||
if r[i].Key.(string) != date { | ||
r = append(r, PageGroup{Key: date}) | ||
i++ | ||
} | ||
r[i].Data = append(r[i].Data, e) | ||
} | ||
return r, nil | ||
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters