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Use ReadOnlySpan literals for signatures
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This commit is contained in:
ema
2026-04-15 01:13:28 +08:00
parent 944b70041a
commit af2bfcd8a2
1 changed files with 9 additions and 9 deletions
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QuickLook.Plugin/QuickLook.Plugin.ImageViewer/Plugin.cs
+9 -9
View File
@@ -144,13 +144,13 @@ public sealed partial class Plugin : IViewer, IMoreMenu
if (!File.Exists(path))
return false;
ReadOnlySpan<byte> pngSignature = new byte[] { 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A };
ReadOnlySpan<byte> jpegSignature = new byte[] { 0xFF, 0xD8, 0xFF };
ReadOnlySpan<byte> gif87Signature = new byte[] { 0x47, 0x49, 0x46, 0x38, 0x37, 0x61 };
ReadOnlySpan<byte> gif89Signature = new byte[] { 0x47, 0x49, 0x46, 0x38, 0x39, 0x61 };
ReadOnlySpan<byte> bmpSignature = new byte[] { 0x42, 0x4D };
ReadOnlySpan<byte> webpRiffSignature = new byte[] { 0x52, 0x49, 0x46, 0x46 };
ReadOnlySpan<byte> webpWebpSignature = new byte[] { 0x57, 0x45, 0x42, 0x50 };
ReadOnlySpan<byte> pngSignature = [0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A];
ReadOnlySpan<byte> jpegSignature = [0xFF, 0xD8, 0xFF];
ReadOnlySpan<byte> gif87Signature = [0x47, 0x49, 0x46, 0x38, 0x37, 0x61];
ReadOnlySpan<byte> gif89Signature = [0x47, 0x49, 0x46, 0x38, 0x39, 0x61];
ReadOnlySpan<byte> bmpSignature = [0x42, 0x4D];
ReadOnlySpan<byte> webpRiffSignature = [0x52, 0x49, 0x46, 0x46];
ReadOnlySpan<byte> webpWebpSignature = [0x57, 0x45, 0x42, 0x50];
const int maxSignatureLength = 12;
@@ -164,8 +164,8 @@ public sealed partial class Plugin : IViewer, IMoreMenu
return false;
// PNG: 89 50 4E 47 0D 0A 1A 0A
if (bytesRead >= pngSignature.Length &&
buffer.AsSpan(0, pngSignature.Length).SequenceEqual(pngSignature))
if (bytesRead >= pngSignature.Length &&
buffer.AsSpan(0, pngSignature.Length).SequenceEqual(pngSignature))
{
return true;
}