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Make logic clearer

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Soreepeong 2023-12-09 00:14:10 +09:00
parent 3d51f88a33
commit ca321e59e4
1 changed files with 41 additions and 34 deletions
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75
Dalamud/Interface/Internal/ImGuiClipboardFunctionProvider.cs
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@ -171,43 +171,61 @@ internal sealed unsafe class ImGuiClipboardFunctionProvider : IServiceType, IDis
_ => 0xFFFD, _ => 0xFFFD,
}; };
/// <summary>
/// Replaces a sequence with another.
/// </summary>
/// <param name="buf">The buffer.</param>
/// <param name="offset">Offset of the sequence to be replaced.</param>
/// <param name="length">Length of the sequence to be replaced.</param>
/// <param name="replacement">The replacement sequence.</param>
/// <returns>The length of <paramref name="replacement"/>.</returns>
public static int ReplaceSequence(
ref ImVectorWrapper<byte> buf,
int offset,
int length,
ReadOnlySpan<byte> replacement)
{
var i = 0;
for (; i < replacement.Length; i++)
{
if (length >= i + 1)
buf[offset++] = replacement[i];
else
buf.Insert(offset++, replacement[i]);
}
for (; i < length; i++)
buf.RemoveAt(offset);
return replacement.Length;
}
/// <summary> /// <summary>
/// Normalize the given text for our use case. /// Normalize the given text for our use case.
/// </summary> /// </summary>
/// <param name="buf">The buffer.</param> /// <param name="buf">The buffer.</param>
public static void Normalize(ref ImVectorWrapper<byte> buf) public static void Normalize(ref ImVectorWrapper<byte> buf)
{ {
// Ensure an implicit null after the end of the string.
buf.EnsureCapacity(buf.Length + 1);
buf.StorageSpan[buf.Length] = 0;
for (var i = 0; i < buf.Length;) for (var i = 0; i < buf.Length;)
{ {
// Already correct?
if (buf[i] is 0x0D && buf[i + 1] is 0x0A)
{
i += 2;
continue;
}
var cb = CountBytes(buf.Data + i, buf.Length - i); var cb = CountBytes(buf.Data + i, buf.Length - i);
var currInt = GetCodepoint(buf.Data + i, cb); var currInt = GetCodepoint(buf.Data + i, cb);
switch (currInt) switch (currInt)
{ {
case 0xFFFF: // Simply invalid // Note that buf.Data[i + 1] is always defined. See the beginning of the function.
case '\r' when buf.Data[i + 1] == '\n': // Already CR LF?
i += 2;
continue;
case 0xFFFE or 0xFFFF: // Simply invalid
case > char.MaxValue: // ImWchar is same size with char; does not support case > char.MaxValue: // ImWchar is same size with char; does not support
case >= 0xD800 and <= 0xDBFF: // UTF-16 surrogate; does not support case >= 0xD800 and <= 0xDBFF: // UTF-16 surrogate; does not support
// Replace with \uFFFD in UTF-8: EF BF BD // Replace with \uFFFD in UTF-8: EF BF BD
buf[i++] = 0xEF; i += ReplaceSequence(ref buf, i, cb, "\uFFFD"u8);
if (cb >= 2)
buf[i++] = 0xBF;
else
buf.Insert(i++, 0xBF);
if (cb >= 3)
buf[i++] = 0xBD;
else
buf.Insert(i++, 0xBD);
if (cb >= 4)
buf.RemoveAt(i);
break; break;
// See String.Manipulation.cs: IndexOfNewlineChar. // See String.Manipulation.cs: IndexOfNewlineChar.
@ -217,18 +235,7 @@ internal sealed unsafe class ImGuiClipboardFunctionProvider : IServiceType, IDis
case '\u0085': // NEL; Next Line case '\u0085': // NEL; Next Line
case '\u2028': // LS; Line Separator case '\u2028': // LS; Line Separator
case '\u2029': // PS; Paragraph Separator case '\u2029': // PS; Paragraph Separator
buf[i++] = 0x0D; i += ReplaceSequence(ref buf, i, cb, "\r\n"u8);
if (cb >= 2)
buf[i++] = 0x0A;
else
buf.Insert(i++, 0x0A);
if (cb >= 3)
buf.RemoveAt(i);
if (cb >= 4)
buf.RemoveAt(i);
break; break;
default: default: