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