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Add list support in Scratch

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This commit is contained in:
Bjørn Erik Pedersen 2016-03-06 15:44:17 +01:00
parent 435e996c4f
commit eaba04e82b
3 changed files with 49 additions and 5 deletions
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23
hugolib/scratch.go
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@ -15,6 +15,7 @@ package hugolib
import (
"github.com/spf13/hugo/helpers"
"reflect"
"sort"
)
@ -23,16 +24,30 @@ type Scratch struct {
values map[string]interface{}
}
// Add will add (using the + operator) the addend to the existing addend (if found).
// For single values, Add will add (using the + operator) the addend to the existing addend (if found).
// Supports numeric values and strings.
//
// If the first add for a key is an array or slice, then the next value(s) will be appended.
func (c *Scratch) Add(key string, newAddend interface{}) (string, error) {
var newVal interface{}
existingAddend, found := c.values[key]
if found {
var err error
newVal, err = helpers.DoArithmetic(existingAddend, newAddend, '+')
if err != nil {
return "", err
addendV := reflect.ValueOf(existingAddend)
if addendV.Kind() == reflect.Slice || addendV.Kind() == reflect.Array {
nav := reflect.ValueOf(newAddend)
if nav.Kind() == reflect.Slice || nav.Kind() == reflect.Array {
newVal = reflect.AppendSlice(addendV, nav).Interface()
} else {
newVal = reflect.Append(addendV, nav).Interface()
}
} else {
newVal, err = helpers.DoArithmetic(existingAddend, newAddend, '+')
if err != nil {
return "", err
}
}
} else {
newVal = newAddend