strcase/camel.go

/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2015 Ian Coleman
 * Copyright (c) 2018 Ma_124, <github.com/Ma124>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, Subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or Substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package strcase

import (
	"strings"
)

// Converts a string to CamelCase
func toCamelInitCase(s string, initCase bool) string {
	s = addWordBoundariesToNumbers(s)
	n := ""
	capNext := initCase
	for _, v := range s {
		if capNext && v >= 'a' && v <= 'z' {
			v = int32(strings.ToUpper(string(v))[0])
		}
		if (v >= 'A' && v <= 'Z') ||
			(v >= 'a' && v <= 'z') ||
			(v >= '0' && v <= '9') {
			n += string(v)
		}
		capNext = v == '_' || v == ' ' || v == '-' || v == '.'
	}
	return n
}

// ToCamel converts a string to CamelCase
func ToCamel(s string) string {
	if uppercaseAcronym[s] {
		s = strings.ToLower(s)
	}
	return toCamelInitCase(s, true)
}

// ToLowerCamel converts a string to lowerCamelCase
func ToLowerCamel(s string) string {
	if s == "" {
		return s
	}
	if uppercaseAcronym[s] {
		s = strings.ToLower(s)
	} else if r := s[0]; r >= 'A' && r <= 'Z' {
		s = strings.ToLower(string(r)) + s[1:]
	}
	return toCamelInitCase(s, false)
}