talksik
117 lines
2.2 KiB
Go
117 lines
2.2 KiB
Go
package utils
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import (
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"errors"
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"strconv"
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)
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func OptionalBool(input *bool) bool {
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if input == nil {
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return false
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}
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return *input
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}
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func CreateOptionalBool(input bool) *bool {
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if input == false {
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return nil
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}
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return &input
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}
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// OptionalString converts a non-nil *string to the respective string or returns "".
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func OptionalString(input *string) string {
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if input == nil {
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return ""
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}
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return *input
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}
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// OptionalInt converts a non-nil *int to the respective int, otherwise returns 0.
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func OptionalInt(input *int) int {
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if input == nil {
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return 0
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}
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return *input
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}
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// CreateOptionalInt when given a zero value int (0), it returns a nil *int.
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// Otherwise, it gives a proper *int with valid value.
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func CreateOptionalInt(input int) *int {
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if input == 0 {
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return nil
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}
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return &input
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}
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// CreateOptionalString when given an empty string, it returns a nil *string.
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// Otherwise, it gives a proper *string with valid value.
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func CreateOptionalString(input string) *string {
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if input == "" {
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return nil
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}
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return &input
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}
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// GetNumberFromString converts a string to a number.
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// Returns error if the query is not a number.
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func GetNumberFromString(input string) (int, error) {
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for _, c := range input {
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if c < '0' || c > '9' {
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return 0, errors.New("invalid input")
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}
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}
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idAsInt, err := strconv.Atoi(input)
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if err != nil || idAsInt <= 0 {
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return 0, errors.New("invalid input")
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}
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return idAsInt, nil
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}
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type Number interface {
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int | int8 | int16 | int32 | int64 | uint | uint8 | uint16 | uint32 | uint64 | float32 | float64
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}
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// OptionalNumber converts a non-nil *NUMBER to the respective number value or returns 0.
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func OptionalNumber[T Number](input *T) T {
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if input == nil {
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return 0
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}
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return *input
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}
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// CreateOptionalNumber when given an zero value NUMBER (0), it returns a nil *NUMBER, otherwise, it gives a proper *NUMBER with valid value.
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func CreateOptionalNumber[T Number](input T) *T {
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if input == 0 {
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return nil
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}
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return &input
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}
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func IntToInt64Pointer(input *int) *int64 {
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if input == nil {
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return nil
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}
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val := int64(*input)
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return &val
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}
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func NumberToNumberPointer[T Number, Y Number](input *T) *Y {
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if input == nil {
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return nil
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}
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val := Y(*input)
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return &val
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}
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