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Removed Obsolete A_Property Methods

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Changed GetDimensions to handle a stream at the end and one exit

Switched to using Action? over IDlibDotNet for Tick method

Switched to using AsReadOnly over new()

Moved Meta Base to Shared
This commit is contained in:
Mike Phares
2025-06-30 16:38:30 -07:00
parent c7ded16e50
commit 86f0ff0486
38 changed files with 901 additions and 960 deletions
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45
Metadata/Models/Stateless/Dimensions.cs
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@ -8,18 +8,18 @@ internal static class Dimensions
#pragma warning disable IDE0230
private static readonly Dictionary<byte[], Func<BinaryReader, Size?>> _ImageFormatDecoders = new()
{
{ new byte[] { 0xff, 0xd8 }, DecodeJfif },
{ new byte[] { 0x42, 0x4D }, DecodeBitmap },
{ new byte[] { 0x52, 0x49, 0x46, 0x46 }, DecodeWebP },
{ new byte[] { 0x47, 0x49, 0x46, 0x38, 0x37, 0x61 }, DecodeGif },
{ new byte[] { 0x47, 0x49, 0x46, 0x38, 0x39, 0x61 }, DecodeGif },
{ new byte[] { 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A }, DecodePng },
{ new byte[] { 0xff, 0xd8 }, DecodeJfif },
{ new byte[] { 0x52, 0x49, 0x46, 0x46 }, DecodeWebP },
};
#pragma warning restore IDE0230
private static bool StartsWith(byte[] thisBytes, byte[] thatBytes)
private static bool StartsWith(List<byte> thisBytes, byte[] thatBytes)
{
for (int i = 0; i < thatBytes.Length; i += 1)
for (int i = 0; i < thisBytes.Count && i < thatBytes.Length; i += 1)
{
if (thisBytes[i] == thatBytes[i])
continue;
@ -103,24 +103,41 @@ internal static class Dimensions
internal static Size? GetDimensions(BinaryReader binaryReader)
{
int maxMagicBytesLength = _ImageFormatDecoders.Keys.OrderByDescending(x => x.Length).First().Length;
byte[] magicBytes = new byte[maxMagicBytesLength];
for (int i = 0; i < maxMagicBytesLength; i += 1)
Size? result;
List<byte> magicBytes = [];
int[] magicBytesLengths = (from l in _ImageFormatDecoders.Keys where l.Length <= binaryReader.BaseStream.Length orderby l.Length descending select l.Length).ToArray();
if (magicBytesLengths.Length == 0)
result = null;
else
{
magicBytes[i] = binaryReader.ReadByte();
foreach (KeyValuePair<byte[], Func<BinaryReader, Size?>> kvPair in _ImageFormatDecoders)
result = null;
if (binaryReader.BaseStream.Length == binaryReader.BaseStream.Position)
_ = binaryReader.BaseStream.Seek(0, SeekOrigin.Begin);
for (int i = 0; i < magicBytesLengths[0]; i++)
{
if (StartsWith(magicBytes, kvPair.Key))
return kvPair.Value(binaryReader);
magicBytes.Add(binaryReader.ReadByte());
foreach (KeyValuePair<byte[], Func<BinaryReader, Size?>> kvPair in _ImageFormatDecoders)
{
if (StartsWith(magicBytes, kvPair.Key))
{
result = kvPair.Value(binaryReader);
break;
}
}
if (result is not null)
break;
}
}
return null;
return result;
}
internal static Size? GetDimensions(string path)
{
using BinaryReader binaryReader = new(File.OpenRead(path));
return GetDimensions(binaryReader);
Size? result;
using FileStream fileStream = File.OpenRead(path);
using BinaryReader binaryReader = new(fileStream);
result = GetDimensions(binaryReader);
return result;
}
}