f76f14c0ce# Describe Request Added copyright header to the code. Fixes #112 # Change Type Documentation change.
52 lines
1 KiB
Go
52 lines
1 KiB
Go
// Package checker is a Go library for validating user input through struct tags.
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//
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// https://github.com/cinar/checker
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//
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// Copyright 2023 Onur Cinar. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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//
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package checker
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import (
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"reflect"
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"strings"
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"unicode"
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)
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// NormalizerTitle is the name of the normalizer.
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const NormalizerTitle = "title"
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// makeTitle makes a normalizer function for the title normalizer.
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func makeTitle(_ string) CheckFunc {
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return normalizeTitle
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}
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// normalizeTitle maps the first letter of each word to their upper case.
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func normalizeTitle(value, _ reflect.Value) Result {
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if value.Kind() != reflect.String {
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panic("string expected")
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}
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var sb strings.Builder
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begin := true
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for _, c := range value.String() {
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if unicode.IsLetter(c) {
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if begin {
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c = unicode.ToUpper(c)
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begin = false
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} else {
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c = unicode.ToLower(c)
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}
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} else {
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begin = true
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}
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sb.WriteRune(c)
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}
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value.SetString(sb.String())
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return ResultValid
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}
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