Enable decoding of unpadded base64 strings (#187)

Closes #178 Co-authored-by: Regenhardt Marlon <[email protected]>
DevToys-app · Mar 26, 2022 · d2ac6b7 · d2ac6b7
1 parent 065ad1a
commit d2ac6b7
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diff --git a/...ewModels/Tools/EncodersDecoders/Base64EncoderDecoder/Base64EncoderDecoderToolViewModel.cs b/...ewModels/Tools/EncodersDecoders/Base64EncoderDecoder/Base64EncoderDecoderToolViewModel.cs
@@ -201,6 +201,13 @@ private async Task<string> DecodeBase64DataAsync(string? data)
                 return string.Empty;
             }
 
+            int remainder = data!.Length % 4;
+            if (remainder > 0)
+            {
+                int padding = 4 - remainder;
+                data = data.PadRight(data.Length + padding, '=');
+            }
+
             await TaskScheduler.Default;
             string? decoded = string.Empty;
 

diff --git a/src/tests/DevToys.Tests/Providers/Tools/Base64EncoderDecoderTests.cs b/src/tests/DevToys.Tests/Providers/Tools/Base64EncoderDecoderTests.cs
@@ -54,6 +54,7 @@ await ThreadHelper.RunOnUIThreadAsync(() =>
         [DataRow("", "")]
         [DataRow(" ", "")]
         [DataRow("SGVsbG8gVGhlcmU=", "Hello There")]
+        [DataRow("SGVsbG8gVGhlcmU", "Hello There")]
         public async Task DecodeAsync(string input, string expectedResult)
         {
             Base64EncoderDecoderToolViewModel viewModel = ExportProvider.Import<Base64EncoderDecoderToolViewModel>();