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Malar Invention
311
vendor/github.com/Masterminds/sprig/list.go
generated
vendored
Normal file
311
vendor/github.com/Masterminds/sprig/list.go
generated
vendored
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@ -0,0 +1,311 @@
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package sprig
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import (
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"fmt"
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"reflect"
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"sort"
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)
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// Reflection is used in these functions so that slices and arrays of strings,
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// ints, and other types not implementing []interface{} can be worked with.
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// For example, this is useful if you need to work on the output of regexs.
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func list(v ...interface{}) []interface{} {
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return v
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}
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func push(list interface{}, v interface{}) []interface{} {
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tp := reflect.TypeOf(list).Kind()
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switch tp {
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case reflect.Slice, reflect.Array:
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l2 := reflect.ValueOf(list)
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l := l2.Len()
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nl := make([]interface{}, l)
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for i := 0; i < l; i++ {
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nl[i] = l2.Index(i).Interface()
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}
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return append(nl, v)
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default:
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panic(fmt.Sprintf("Cannot push on type %s", tp))
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}
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}
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func prepend(list interface{}, v interface{}) []interface{} {
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//return append([]interface{}{v}, list...)
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tp := reflect.TypeOf(list).Kind()
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switch tp {
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case reflect.Slice, reflect.Array:
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l2 := reflect.ValueOf(list)
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l := l2.Len()
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nl := make([]interface{}, l)
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for i := 0; i < l; i++ {
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nl[i] = l2.Index(i).Interface()
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}
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return append([]interface{}{v}, nl...)
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default:
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panic(fmt.Sprintf("Cannot prepend on type %s", tp))
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}
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}
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func last(list interface{}) interface{} {
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tp := reflect.TypeOf(list).Kind()
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switch tp {
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case reflect.Slice, reflect.Array:
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l2 := reflect.ValueOf(list)
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l := l2.Len()
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if l == 0 {
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return nil
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}
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return l2.Index(l - 1).Interface()
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default:
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panic(fmt.Sprintf("Cannot find last on type %s", tp))
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}
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}
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func first(list interface{}) interface{} {
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tp := reflect.TypeOf(list).Kind()
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switch tp {
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case reflect.Slice, reflect.Array:
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l2 := reflect.ValueOf(list)
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l := l2.Len()
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if l == 0 {
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return nil
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}
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return l2.Index(0).Interface()
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default:
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panic(fmt.Sprintf("Cannot find first on type %s", tp))
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}
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}
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func rest(list interface{}) []interface{} {
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tp := reflect.TypeOf(list).Kind()
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switch tp {
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case reflect.Slice, reflect.Array:
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l2 := reflect.ValueOf(list)
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l := l2.Len()
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if l == 0 {
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return nil
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}
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nl := make([]interface{}, l-1)
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for i := 1; i < l; i++ {
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nl[i-1] = l2.Index(i).Interface()
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}
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return nl
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default:
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panic(fmt.Sprintf("Cannot find rest on type %s", tp))
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}
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}
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func initial(list interface{}) []interface{} {
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tp := reflect.TypeOf(list).Kind()
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switch tp {
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case reflect.Slice, reflect.Array:
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l2 := reflect.ValueOf(list)
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l := l2.Len()
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if l == 0 {
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return nil
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}
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nl := make([]interface{}, l-1)
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for i := 0; i < l-1; i++ {
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nl[i] = l2.Index(i).Interface()
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}
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return nl
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default:
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panic(fmt.Sprintf("Cannot find initial on type %s", tp))
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}
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}
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func sortAlpha(list interface{}) []string {
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k := reflect.Indirect(reflect.ValueOf(list)).Kind()
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switch k {
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case reflect.Slice, reflect.Array:
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a := strslice(list)
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s := sort.StringSlice(a)
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s.Sort()
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return s
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}
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return []string{strval(list)}
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}
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func reverse(v interface{}) []interface{} {
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tp := reflect.TypeOf(v).Kind()
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switch tp {
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case reflect.Slice, reflect.Array:
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l2 := reflect.ValueOf(v)
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l := l2.Len()
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// We do not sort in place because the incoming array should not be altered.
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nl := make([]interface{}, l)
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for i := 0; i < l; i++ {
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nl[l-i-1] = l2.Index(i).Interface()
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}
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return nl
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default:
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panic(fmt.Sprintf("Cannot find reverse on type %s", tp))
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}
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}
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func compact(list interface{}) []interface{} {
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tp := reflect.TypeOf(list).Kind()
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switch tp {
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case reflect.Slice, reflect.Array:
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l2 := reflect.ValueOf(list)
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l := l2.Len()
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nl := []interface{}{}
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var item interface{}
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for i := 0; i < l; i++ {
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item = l2.Index(i).Interface()
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if !empty(item) {
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nl = append(nl, item)
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}
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}
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return nl
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default:
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panic(fmt.Sprintf("Cannot compact on type %s", tp))
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}
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}
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func uniq(list interface{}) []interface{} {
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tp := reflect.TypeOf(list).Kind()
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switch tp {
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case reflect.Slice, reflect.Array:
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l2 := reflect.ValueOf(list)
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l := l2.Len()
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dest := []interface{}{}
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var item interface{}
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for i := 0; i < l; i++ {
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item = l2.Index(i).Interface()
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if !inList(dest, item) {
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dest = append(dest, item)
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}
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}
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return dest
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default:
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panic(fmt.Sprintf("Cannot find uniq on type %s", tp))
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}
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}
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func inList(haystack []interface{}, needle interface{}) bool {
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for _, h := range haystack {
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if reflect.DeepEqual(needle, h) {
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return true
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}
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}
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return false
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}
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func without(list interface{}, omit ...interface{}) []interface{} {
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tp := reflect.TypeOf(list).Kind()
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switch tp {
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case reflect.Slice, reflect.Array:
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l2 := reflect.ValueOf(list)
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l := l2.Len()
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res := []interface{}{}
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var item interface{}
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for i := 0; i < l; i++ {
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item = l2.Index(i).Interface()
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if !inList(omit, item) {
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res = append(res, item)
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}
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}
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return res
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default:
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panic(fmt.Sprintf("Cannot find without on type %s", tp))
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}
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}
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func has(needle interface{}, haystack interface{}) bool {
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if haystack == nil {
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return false
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}
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tp := reflect.TypeOf(haystack).Kind()
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switch tp {
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case reflect.Slice, reflect.Array:
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l2 := reflect.ValueOf(haystack)
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var item interface{}
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l := l2.Len()
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for i := 0; i < l; i++ {
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item = l2.Index(i).Interface()
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if reflect.DeepEqual(needle, item) {
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return true
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}
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}
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return false
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default:
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panic(fmt.Sprintf("Cannot find has on type %s", tp))
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}
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}
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// $list := [1, 2, 3, 4, 5]
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// slice $list -> list[0:5] = list[:]
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// slice $list 0 3 -> list[0:3] = list[:3]
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// slice $list 3 5 -> list[3:5]
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// slice $list 3 -> list[3:5] = list[3:]
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func slice(list interface{}, indices ...interface{}) interface{} {
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tp := reflect.TypeOf(list).Kind()
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switch tp {
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case reflect.Slice, reflect.Array:
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l2 := reflect.ValueOf(list)
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l := l2.Len()
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if l == 0 {
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return nil
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}
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var start, end int
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if len(indices) > 0 {
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start = toInt(indices[0])
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}
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if len(indices) < 2 {
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end = l
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} else {
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end = toInt(indices[1])
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}
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return l2.Slice(start, end).Interface()
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default:
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panic(fmt.Sprintf("list should be type of slice or array but %s", tp))
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}
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}
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func concat(lists ...interface{}) interface{} {
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var res []interface{}
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for _, list := range lists {
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tp := reflect.TypeOf(list).Kind()
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switch tp {
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case reflect.Slice, reflect.Array:
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l2 := reflect.ValueOf(list)
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for i := 0; i < l2.Len(); i++ {
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res = append(res, l2.Index(i).Interface())
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}
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default:
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panic(fmt.Sprintf("Cannot concat type %s as list", tp))
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}
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}
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return res
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}
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