Created
July 1, 2023 08:28
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Implementation of the `UnityEditor.ObjectNames.NicifyVariableName` algorithm
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using System.Text; | |
namespace QuickEye.Utility | |
{ | |
public static class TextUtils | |
{ | |
public static string NicifyVariableName(string input) | |
{ | |
var result = new StringBuilder(input.Length * 2); | |
var prevIsLetter = false; | |
var prevIsLetterUpper = false; | |
var prevIsDigit = false; | |
var prevIsStartOfWord = false; | |
var prevIsNumberWord = false; | |
var firstCharIndex = 0; | |
if (input.StartsWith('_')) | |
firstCharIndex = 1; | |
else if (input.StartsWith("m_")) | |
firstCharIndex = 2; | |
for (var i = input.Length - 1; i >= firstCharIndex; i--) | |
{ | |
var currentChar = input[i]; | |
var currIsLetter = char.IsLetter(currentChar); | |
if (i == firstCharIndex && currIsLetter) | |
currentChar = char.ToUpper(currentChar); | |
var currIsLetterUpper = char.IsUpper(currentChar); | |
var currIsDigit = char.IsDigit(currentChar); | |
var currIsSpacer = currentChar == ' ' || currentChar == '_'; | |
var addSpace = (currIsLetter && !currIsLetterUpper && prevIsLetterUpper) || | |
(currIsLetter && prevIsLetterUpper && prevIsStartOfWord) || | |
(currIsDigit && prevIsStartOfWord) || | |
(!currIsDigit && prevIsNumberWord) || | |
(currIsLetter && !currIsLetterUpper && prevIsDigit); | |
if (!currIsSpacer && addSpace) | |
{ | |
result.Insert(0, ' '); | |
} | |
result.Insert(0, currentChar); | |
prevIsStartOfWord = currIsLetter && currIsLetterUpper && prevIsLetter && !prevIsLetterUpper; | |
prevIsNumberWord = currIsDigit && prevIsLetter && !prevIsLetterUpper; | |
prevIsLetterUpper = currIsLetter && currIsLetterUpper; | |
prevIsLetter = currIsLetter; | |
prevIsDigit = currIsDigit; | |
} | |
return result.ToString(); | |
} | |
} | |
} |
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using System.Collections; | |
using System.Collections.Generic; | |
using System.Linq; | |
using NUnit.Framework; | |
namespace QuickEye.Utility.Tests.Editor | |
{ | |
public class TextUtilsTests | |
{ | |
[TestCaseSource(nameof(GetTestCases))] | |
[TestCaseSource(nameof(GetTestCases2))] | |
public void Should_OutputMatchUnityEditorMethod_When_NicifyClassName(string input) | |
{ | |
var expected = UnityEditor.ObjectNames.NicifyVariableName(input); | |
var actual = TextUtils.NicifyVariableName(input); | |
Assert.AreEqual(expected, actual); | |
} | |
private static IEnumerable GetTestCases() | |
{ | |
yield return "className2Number"; | |
yield return "className2number"; | |
yield return "_className2number_"; | |
yield return "m_className2number_"; | |
yield return "_m_className2number_"; | |
yield return " _className2number_ "; | |
yield return "_ className2number _"; | |
yield return "className22Number"; | |
yield return "className222Number"; | |
yield return "className22number"; | |
yield return "className222number"; | |
yield return "className23"; | |
yield return "clasSName23"; | |
yield return "clasSDKName23"; | |
yield return "Class_Name_23"; | |
yield return "SDKName"; | |
yield return "SDK_Name"; | |
yield return "sDK_Name"; | |
yield return "G2A"; | |
yield return "SDK2"; | |
yield return "SDK22"; | |
yield return "SDK2a"; | |
yield return "SDK22a"; | |
yield return "SDk2"; | |
yield return "SDk22"; | |
yield return "SDk2a"; | |
yield return "SDk22a"; | |
yield return "SDK22a2a"; | |
yield return "SDK2a2a"; | |
yield return "SDk2"; | |
yield return "SDk22"; | |
yield return "SDk22a"; | |
yield return "SD K2"; | |
yield return "SD k2"; | |
yield return "SDK2a"; | |
yield return "SDk2A"; | |
yield return "SD2A"; | |
yield return "2 A2 a"; | |
} | |
private static IEnumerable<string> GetTestCases2() | |
{ | |
var str = "m_AAA02_"; | |
var results = | |
from e in Enumerable.Range(0, 1 << str.Length) | |
let p = from b in Enumerable.Range(0, str.Length) | |
select (e & (1 << b)) == 0 ? (char?)null : str[b] | |
select string.Join(string.Empty, p); | |
return results; | |
} | |
} | |
} |
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