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Remove invalid unicode sequences from text copied from clipboard/WebS…
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| using System.Text; | ||
|
|
||
| namespace JL.Core.Utilities; | ||
| public class TextUtils | ||
| { | ||
| private static int FirstInvalidUnicodeSequenceIndex(string text) | ||
| { | ||
| for (int i = 0; i < text.Length; i++) | ||
| { | ||
| char c = text[i]; | ||
|
|
||
| if (c < '\ud800') | ||
| { | ||
| continue; | ||
| } | ||
| else if (c is '\uFFFE' || char.IsLowSurrogate(c)) | ||
| { | ||
| return i; | ||
| } | ||
| else if (char.IsHighSurrogate(c)) | ||
| { | ||
| if (i + 1 >= text.Length || !char.IsLowSurrogate(text[i + 1])) | ||
| { | ||
| return i; | ||
| } | ||
| else | ||
| { | ||
| ++i; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| return -1; | ||
| } | ||
|
|
||
| private static string RemoveInvalidUnicodeSequences(string text, int index) | ||
| { | ||
| StringBuilder sb = new(text[..index], text.Length - 1); | ||
|
|
||
| for (int i = index + 1; i < text.Length; i++) | ||
| { | ||
| char c = text[i]; | ||
|
|
||
| if (c < '\ud800') | ||
| { | ||
| _ = sb.Append(c); | ||
| } | ||
| else if (c is '\uFFFE' || char.IsLowSurrogate(c)) | ||
| { | ||
| continue; | ||
| } | ||
| else if (char.IsHighSurrogate(c)) | ||
| { | ||
| if (i + 1 >= text.Length || !char.IsLowSurrogate(text[i + 1])) | ||
| { | ||
| continue; | ||
| } | ||
| else | ||
| { | ||
| _ = sb.Append(c).Append(text[i + 1]); | ||
| ++i; | ||
| } | ||
| } | ||
| else | ||
| { | ||
| _ = sb.Append(c); | ||
| } | ||
| } | ||
|
|
||
| return sb.ToString(); | ||
| } | ||
|
|
||
| public static string SanitizeText(string text) | ||
| { | ||
| int firstInvalidUnicodeCharIndex = FirstInvalidUnicodeSequenceIndex(text); | ||
| if (firstInvalidUnicodeCharIndex is not -1) | ||
| { | ||
| text = RemoveInvalidUnicodeSequences(text, firstInvalidUnicodeCharIndex); | ||
| } | ||
|
|
||
| if (CoreConfig.TextBoxTrimWhiteSpaceCharacters) | ||
| { | ||
| text = text.Trim(); | ||
| } | ||
|
|
||
| if (CoreConfig.TextBoxRemoveNewlines) | ||
| { | ||
| text = text.ReplaceLineEndings(""); | ||
| } | ||
|
|
||
| return text; | ||
| } | ||
| } |
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