78 lines
1.6 KiB
Go
78 lines
1.6 KiB
Go
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package utils
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import (
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"fmt"
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"reflect"
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"sort"
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"strings"
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)
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// PrintMap prints a map
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func PrintMap(m interface{}) string {
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var outputText string
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v := reflect.ValueOf(m)
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if v.Kind() != reflect.Map {
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outputText = fmt.Sprintf("error while printing map\nreceived a %T\n %s\n", m, m)
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} else {
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keys := v.MapKeys()
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var xs []string
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for _, k := range keys {
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xs = append(xs, fmt.Sprintf("[%s]=%s", k, v.MapIndex(k)))
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}
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sort.Strings(xs)
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if len(xs) == 0 {
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outputText = "len(map) == 0"
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} else {
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outputText = strings.Join(xs, "\n")
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}
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}
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return outputText
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}
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// PrintArray prints an array
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func PrintArray(m interface{}) string {
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var outputText string
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switch reflect.TypeOf(m).Kind() {
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case reflect.Slice:
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var xs []string
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slice := reflect.ValueOf(m)
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for i := 0; i < slice.Len(); i++ {
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xs = append(xs, fmt.Sprintf("[%d]=%s", i, slice.Index(i)))
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}
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if len(xs) == 0 {
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outputText = "len(array) == 0"
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} else {
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outputText = strings.Join(xs, "\n")
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}
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default:
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outputText = fmt.Sprintf("error while printing array\nreceived a %T\n %s\n", m, m)
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}
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return outputText
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}
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// MapToString maps a collection to a string collection
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func MapToString(collection interface{}, transform func(x interface{}) string) []string {
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switch reflect.TypeOf(collection).Kind() {
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case reflect.Slice:
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var xs []string
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slice := reflect.ValueOf(collection)
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for i := 0; i < slice.Len(); i++ {
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xs = append(xs, transform(slice.Index(i).Interface()))
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}
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return xs
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default:
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panic(fmt.Sprintf("error while mapping array to string\nreceived a %T\n %s\n", collection, collection))
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}
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}
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