80 lines
3.5 KiB
C#
80 lines
3.5 KiB
C#
// This file is part of YamlDotNet - A .NET library for YAML.
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// Copyright (c) Antoine Aubry and contributors
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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// of the Software, and to permit persons to whom the Software is furnished to do
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// so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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using System;
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using System.Text.RegularExpressions;
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namespace YamlDotNet.Serialization.Utilities
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{
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/// <summary>
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/// Various string extension methods
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/// </summary>
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internal static class StringExtensions
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{
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private static string ToCamelOrPascalCase(string str, Func<char, char> firstLetterTransform)
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{
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var text = Regex.Replace(str, "([_\\-])(?<char>[a-z])", match => match.Groups["char"].Value.ToUpperInvariant(), RegexOptions.IgnoreCase);
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return firstLetterTransform(text[0]) + text.Substring(1);
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}
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/// <summary>
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/// Convert the string with underscores (this_is_a_test) or hyphens (this-is-a-test) to
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/// camel case (thisIsATest). Camel case is the same as Pascal case, except the first letter
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/// is lowercase.
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/// </summary>
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/// <param name="str">String to convert</param>
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/// <returns>Converted string</returns>
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public static string ToCamelCase(this string str)
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{
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return ToCamelOrPascalCase(str, char.ToLowerInvariant);
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}
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/// <summary>
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/// Convert the string with underscores (this_is_a_test) or hyphens (this-is-a-test) to
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/// pascal case (ThisIsATest). Pascal case is the same as camel case, except the first letter
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/// is uppercase.
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/// </summary>
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/// <param name="str">String to convert</param>
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/// <returns>Converted string</returns>
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public static string ToPascalCase(this string str)
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{
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return ToCamelOrPascalCase(str, char.ToUpperInvariant);
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}
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/// <summary>
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/// Convert the string from camelcase (thisIsATest) to a hyphenated (this-is-a-test) or
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/// underscored (this_is_a_test) string
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/// </summary>
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/// <param name="str">String to convert</param>
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/// <param name="separator">Separator to use between segments</param>
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/// <returns>Converted string</returns>
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public static string FromCamelCase(this string str, string separator)
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{
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// Ensure first letter is always lowercase
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str = char.ToLower(str[0]) + str.Substring(1);
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str = Regex.Replace(str.ToCamelCase(), "(?<char>[A-Z])", match => separator + match.Groups["char"].Value.ToLowerInvariant());
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return str;
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}
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}
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}
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