39 lines
1.2 KiB
Go
39 lines
1.2 KiB
Go
package checker
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import (
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"reflect"
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"strconv"
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)
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// CheckerMaxLength is the name of the checker.
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const CheckerMaxLength = "max-length"
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// ResultNotMaxLength indicates that the length of the given value is above the defined number.
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const ResultNotMaxLength = "NOT_MAX_LENGTH"
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// IsMaxLength checks if the length of the given value is less than the given maximum length.
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func IsMaxLength(value interface{}, maxLength int) Result {
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return checkMaxLength(reflect.Indirect(reflect.ValueOf(value)), reflect.ValueOf(nil), maxLength)
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}
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// makeMaxLength makes a checker function for the max length checker.
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func makeMaxLength(config string) CheckFunc {
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maxLength, err := strconv.Atoi(config)
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if err != nil {
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panic("unable to parse max length value")
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}
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return func(value, parent reflect.Value) Result {
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return checkMaxLength(value, parent, maxLength)
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}
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}
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// checkMaxLength checks if the length of the given value is less than the given maximum length.
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// The function uses the reflect.Value.Len() function to determaxe the length of the value.
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func checkMaxLength(value, _ reflect.Value, maxLength int) Result {
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if value.Len() > maxLength {
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return ResultNotMaxLength
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}
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return ResultValid
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}
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