2 Commits

5 changed files with 180 additions and 373 deletions

View File

@ -8,16 +8,16 @@ internal static class Dimensions
#pragma warning disable IDE0230 #pragma warning disable IDE0230
private static readonly Dictionary<byte[], Func<BinaryReader, Size?>> _ImageFormatDecoders = new() private static readonly Dictionary<byte[], Func<BinaryReader, Size?>> _ImageFormatDecoders = new()
{ {
{ new byte[] { 0xff, 0xd8 }, DecodeJfif },
{ new byte[] { 0x42, 0x4D }, DecodeBitmap }, { 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, 0x37, 0x61 }, DecodeGif },
{ new byte[] { 0x47, 0x49, 0x46, 0x38, 0x39, 0x61 }, DecodeGif }, { new byte[] { 0x47, 0x49, 0x46, 0x38, 0x39, 0x61 }, DecodeGif },
{ new byte[] { 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A }, DecodePng }, { 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 #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 < thatBytes.Length; i += 1)
{ {
@ -103,24 +103,41 @@ internal static class Dimensions
internal static Size? GetDimensions(BinaryReader binaryReader) internal static Size? GetDimensions(BinaryReader binaryReader)
{ {
int maxMagicBytesLength = _ImageFormatDecoders.Keys.OrderByDescending(x => x.Length).First().Length; Size? result;
byte[] magicBytes = new byte[maxMagicBytesLength]; List<byte> magicBytes = [];
for (int i = 0; i < maxMagicBytesLength; i += 1) 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(); result = null;
if (binaryReader.BaseStream.Length == binaryReader.BaseStream.Position)
_ = binaryReader.BaseStream.Seek(0, SeekOrigin.Begin);
for (int i = 0; i < magicBytesLengths[0]; i++)
{
magicBytes.Add(binaryReader.ReadByte());
foreach (KeyValuePair<byte[], Func<BinaryReader, Size?>> kvPair in _ImageFormatDecoders) foreach (KeyValuePair<byte[], Func<BinaryReader, Size?>> kvPair in _ImageFormatDecoders)
{ {
if (StartsWith(magicBytes, kvPair.Key)) if (StartsWith(magicBytes, kvPair.Key))
return kvPair.Value(binaryReader); {
result = kvPair.Value(binaryReader);
break;
} }
} }
return null; if (result is not null)
break;
}
}
return result;
} }
internal static Size? GetDimensions(string path) internal static Size? GetDimensions(string path)
{ {
using BinaryReader binaryReader = new(File.OpenRead(path)); Size? result;
return GetDimensions(binaryReader); using FileStream fileStream = File.OpenRead(path);
using BinaryReader binaryReader = new(fileStream);
result = GetDimensions(binaryReader);
return result;
} }
} }

View File

@ -1,4 +1,3 @@
using ShellProgressBar;
using System.Collections.ObjectModel; using System.Collections.ObjectModel;
using System.Text; using System.Text;
using System.Text.Json; using System.Text.Json;
@ -66,40 +65,6 @@ public class A_Property
converted: false)); converted: false));
} }
[Obsolete("Use ExifDirectory")]
public void SavePropertyParallelWork(long ticks, Shared.Models.Methods.IMetadata<MetadataExtractor.Directory> metadata, int t, Container.Models.Container[] containers)
{
int total = 0;
string message;
int totalSeconds;
bool anyNullOrNoIsUniqueFileName;
List<Exception> exceptions = [];
Container.Models.Container container;
int containersLength = containers.Length;
const string outputResolution = "Original";
List<Tuple<string, DateTime>> sourceDirectoryChanges = [];
string propertyRoot = IResult.GetResultsGroupDirectory(_PropertyConfiguration, nameof(A_Property));
for (int i = 0; i < containers.Length; i++)
{
container = containers[i];
if (container.Items.Count == 0)
continue;
sourceDirectoryChanges.Clear();
if (container.Items.Count == 0)
continue;
anyNullOrNoIsUniqueFileName = container.Items.Any(l => !l.IsUniqueFileName);
SetAngleBracketCollection(container.SourceDirectory, anyNullOrNoIsUniqueFileName);
totalSeconds = (int)Math.Truncate(new TimeSpan(DateTime.Now.Ticks - ticks).TotalSeconds);
message = $"{i + 1:000} [{container.Items.Count:000}] / {containersLength:000} - {total} / {t} total - {totalSeconds} total second(s) - {outputResolution} - {container.SourceDirectory}";
SavePropertyParallelWork(_MaxDegreeOfParallelism, metadata, exceptions, sourceDirectoryChanges, container, container.Items, message);
if (exceptions.Count == container.Items.Count)
throw new Exception(string.Concat("All in [", container.SourceDirectory, "]failed!"));
if (exceptions.Count != 0)
_ExceptionsDirectories.Add(container.SourceDirectory);
total += container.Items.Count;
}
}
private void SetAngleBracketCollection(string sourceDirectory, bool anyNullOrNoIsUniqueFileName) private void SetAngleBracketCollection(string sourceDirectory, bool anyNullOrNoIsUniqueFileName)
{ {
_AngleBracketCollection.Clear(); _AngleBracketCollection.Clear();
@ -112,180 +77,6 @@ public class A_Property
SetAngleBracketCollection(aResultsFullGroupDirectory, sourceDirectory, anyNullOrNoIsUniqueFileName); SetAngleBracketCollection(aResultsFullGroupDirectory, sourceDirectory, anyNullOrNoIsUniqueFileName);
} }
[Obsolete("Use ExifDirectory")]
private void SavePropertyParallelWork(int maxDegreeOfParallelism, Shared.Models.Methods.IMetadata<MetadataExtractor.Directory> metadata, List<Exception> exceptions, List<Tuple<string, DateTime>> sourceDirectoryChanges, Container.Models.Container container, ReadOnlyCollection<Item> items, string message)
{
List<Tuple<string, DateTime>> sourceDirectoryFileTuples = [];
ParallelOptions parallelOptions = new() { MaxDegreeOfParallelism = maxDegreeOfParallelism };
ProgressBarOptions options = new() { ProgressCharacter = '─', ProgressBarOnBottom = true, DisableBottomPercentage = true };
using ProgressBar progressBar = new(items.Count, message, options);
_ = Parallel.For(0, items.Count, parallelOptions, (i, state) =>
{
try
{
long ticks = DateTime.Now.Ticks;
DateTime dateTime = DateTime.Now;
List<Tuple<string, DateTime>> collection;
SavePropertyParallelForWork(metadata, container.SourceDirectory, sourceDirectoryChanges, sourceDirectoryFileTuples, items[i]);
if (i == 0 || sourceDirectoryChanges.Count != 0)
progressBar.Tick();
lock (sourceDirectoryFileTuples)
collection = (from l in sourceDirectoryFileTuples where l.Item2 > dateTime select l).ToList();
lock (sourceDirectoryChanges)
sourceDirectoryChanges.AddRange(collection);
}
catch (Exception ex)
{
lock (exceptions)
exceptions.Add(ex);
}
});
}
[Obsolete("Use ExifDirectory")]
private void SavePropertyParallelForWork(Shared.Models.Methods.IMetadata<MetadataExtractor.Directory> metadata, string sourceDirectory, List<Tuple<string, DateTime>> sourceDirectoryFileTuples, List<Tuple<string, DateTime>> sourceDirectoryChanges, Item item)
{
Shared.Models.Property property;
List<string> parseExceptions = [];
bool isIgnoreExtension = item.IsValidImageFormatExtension && _PropertyConfiguration.IgnoreExtensions.Contains(item.FilePath.ExtensionLowered);
string filteredSourceDirectoryFileExtensionLowered = Path.Combine(sourceDirectory, $"{item.FilePath.NameWithoutExtension}{item.FilePath.ExtensionLowered}");
if (item.IsValidImageFormatExtension && item.FilePath.FullName.Length == filteredSourceDirectoryFileExtensionLowered.Length && item.FilePath.FullName != filteredSourceDirectoryFileExtensionLowered)
File.Move(item.FilePath.FullName, filteredSourceDirectoryFileExtensionLowered);
if (item.FileSizeChanged is null || item.FileSizeChanged.Value || item.LastWriteTimeChanged is null || item.LastWriteTimeChanged.Value || item.ExifDirectory is null)
{
property = GetImageProperty(metadata, item, sourceDirectoryFileTuples, parseExceptions, isIgnoreExtension);
lock (sourceDirectoryChanges)
sourceDirectoryChanges.Add(new Tuple<string, DateTime>(nameof(A_Property), DateTime.Now));
lock (item)
item.Update(null);
}
}
[Obsolete("Use ExifDirectory")]
private Shared.Models.Property GetImageProperty(Shared.Models.Methods.IMetadata<MetadataExtractor.Directory> metadata, Item item, List<Tuple<string, DateTime>> sourceDirectoryFileTuples, List<string> parseExceptions, bool isIgnoreExtension)
{
Shared.Models.Property? result;
int? id = null;
FileInfo fileInfo;
string? json = null;
bool hasWrongYearProperty = false;
string[] changesFrom = [];
string angleBracket = _AngleBracketCollection[0];
bool populateId = _Configuration.PopulatePropertyId;
if (!item.IsUniqueFileName)
fileInfo = new(Path.Combine(angleBracket.Replace("<>", _PropertyConfiguration.ResultSingleton), $"{item.FilePath.NameWithoutExtension}{item.FilePath.ExtensionLowered}.json"));
else
{
string fileName = $"{item.FilePath.NameWithoutExtension}{item.FilePath.ExtensionLowered}.json";
CombinedEnumAndIndex cei = Shared.Models.Stateless.Methods.IPath.GetCombinedEnumAndIndex(_PropertyConfiguration, item.FilePath);
string directory = _ResultSingletonFileGroups[0][cei.Enum][cei.Index];
fileInfo = new(Path.Combine(directory, fileName));
MoveIf(fileName, cei, directory, fileInfo);
}
List<DateTime> dateTimes = (from l in sourceDirectoryFileTuples where l is not null && changesFrom.Contains(l.Item1) select l.Item2).ToList();
if (_Configuration.ForcePropertyLastWriteTimeToCreationTime && !fileInfo.Exists && File.Exists(Path.ChangeExtension(fileInfo.FullName, ".delete")))
{
File.Move(Path.ChangeExtension(fileInfo.FullName, ".delete"), fileInfo.FullName);
fileInfo.Refresh();
}
if (_Configuration.ForcePropertyLastWriteTimeToCreationTime && fileInfo.Exists && fileInfo.LastWriteTime != fileInfo.CreationTime)
{
File.SetLastWriteTime(fileInfo.FullName, fileInfo.CreationTime);
fileInfo.Refresh();
}
if (_Configuration.PropertiesChangedForProperty)
result = null;
else if (!fileInfo.Exists)
result = null;
else if (!fileInfo.FullName.EndsWith(".json") && !fileInfo.FullName.EndsWith(".old"))
throw new ArgumentException("must be a *.json file");
else if (dateTimes.Count != 0 && dateTimes.Max() > fileInfo.LastWriteTime)
result = null;
else
{
json = File.ReadAllText(fileInfo.FullName);
try
{
if (item.ExifDirectory is not null)
result = null;
else
result = JsonSerializer.Deserialize(json, PropertyGenerationContext.Default.Property);
if (result is not null && json.Contains("WrongYear"))
{
id = result.Id;
hasWrongYearProperty = true;
result = null;
}
if (!isIgnoreExtension && item.IsValidImageFormatExtension && ((populateId && result?.Id is null) || result?.Width is null || result.Height is null))
{
id = result?.Id;
result = null;
}
if (!isIgnoreExtension && item.IsValidImageFormatExtension && populateId && result is not null && result.LastWriteTime.Ticks != item.FilePath.LastWriteTicks)
{
id = null;
result = null;
}
if (!isIgnoreExtension && item.IsValidImageFormatExtension && result?.Width is not null && result.Height is not null && result.Width.Value == result.Height.Value)
{
id = result.Id;
result = null;
if (result?.Width is not null && result.Height is not null && result.Width.Value != result.Height.Value)
throw new Exception("Was square!");
}
if (!isIgnoreExtension && item.IsValidImageFormatExtension && result is not null && result.FileSize != item.FilePath.Length)
{
id = result.Id;
result = null;
}
if (result is not null)
{
sourceDirectoryFileTuples.Add(new Tuple<string, DateTime>(nameof(A_Property), fileInfo.LastWriteTime));
if (fileInfo.CreationTime != result.LastWriteTime)
{
File.SetCreationTime(fileInfo.FullName, result.LastWriteTime);
File.SetLastWriteTime(fileInfo.FullName, fileInfo.LastWriteTime);
}
}
}
catch (Exception)
{
result = null;
parseExceptions.Add(nameof(A_Property));
}
}
if (result is null)
{
id ??= item.FilePath.Id;
(_, _, result) = Stateless.Property.GetProperty(populateId, metadata, item.FilePath, result, isIgnoreExtension, item.IsValidImageFormatExtension, id, _ASCIIEncoding);
json = JsonSerializer.Serialize(result, PropertyGenerationContext.Default.Property);
if (populateId && Shared.Models.Stateless.Methods.IPath.WriteAllText(fileInfo.FullName, json, updateDateWhenMatches: true, compareBeforeWrite: true))
{
File.SetCreationTime(fileInfo.FullName, result.LastWriteTime);
if (!_Configuration.ForcePropertyLastWriteTimeToCreationTime)
sourceDirectoryFileTuples.Add(new Tuple<string, DateTime>(nameof(A_Property), DateTime.Now));
else
{
File.SetLastWriteTime(fileInfo.FullName, fileInfo.CreationTime);
fileInfo.Refresh();
sourceDirectoryFileTuples.Add(new Tuple<string, DateTime>(nameof(A_Property), fileInfo.CreationTime));
}
}
}
else if (hasWrongYearProperty)
{
json = JsonSerializer.Serialize(result, PropertyGenerationContext.Default.Property);
if (Shared.Models.Stateless.Methods.IPath.WriteAllText(fileInfo.FullName, json, updateDateWhenMatches: true, compareBeforeWrite: true))
{
File.SetCreationTime(fileInfo.FullName, result.LastWriteTime);
File.SetLastWriteTime(fileInfo.FullName, fileInfo.CreationTime);
fileInfo.Refresh();
sourceDirectoryFileTuples.Add(new Tuple<string, DateTime>(nameof(A_Property), fileInfo.CreationTime));
}
}
return result;
}
private static void MoveIf(string fileName, CombinedEnumAndIndex cei, string directory, FileInfo fileInfo) private static void MoveIf(string fileName, CombinedEnumAndIndex cei, string directory, FileInfo fileInfo)
{ {
string[] segments = directory.Split(cei.Combined); string[] segments = directory.Split(cei.Combined);
@ -305,22 +96,4 @@ public class A_Property
} }
} }
[Obsolete("Use ExifDirectory")]
public Shared.Models.Property GetProperty(Shared.Models.Methods.IMetadata<MetadataExtractor.Directory> metadata, Item item, List<Tuple<string, DateTime>> sourceDirectoryFileTuples, List<string> parseExceptions)
{
Shared.Models.Property result;
bool angleBracketCollectionAny = _AngleBracketCollection.Count != 0;
if (!angleBracketCollectionAny)
{
if (item.FilePath.DirectoryFullPath is null)
throw new NullReferenceException(nameof(item.FilePath.DirectoryFullPath));
SetAngleBracketCollection(item.FilePath.DirectoryFullPath, !item.IsUniqueFileName);
}
bool isIgnoreExtension = item.IsValidImageFormatExtension && _PropertyConfiguration.IgnoreExtensions.Contains(item.FilePath.ExtensionLowered);
result = GetImageProperty(metadata, item, sourceDirectoryFileTuples, parseExceptions, isIgnoreExtension);
if (!angleBracketCollectionAny)
_AngleBracketCollection.Clear();
return result;
}
} }

View File

@ -76,7 +76,7 @@ public class FaceFileSystem : FileSystem, Properties.IFaceFileSystem
} }
else else
{ {
System.Drawing.Size size = Stateless.Methods.ImageHelper.GetDimensions(fileInfo.FullName, faceRight, faceBottom); System.Drawing.Size size = Stateless.Methods.Dimensions.GetDimensions(fileInfo.FullName, faceRight, faceBottom);
imageWidth = size.Width; imageWidth = size.Width;
imageHeight = size.Height; imageHeight = size.Height;
} }

View File

@ -0,0 +1,149 @@
using System.Drawing;
namespace View_by_Distance.Shared.Models.Stateless.Methods;
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 },
};
#pragma warning restore IDE0230
private static bool StartsWith(List<byte> thisBytes, byte[] thatBytes)
{
for (int i = 0; i < thatBytes.Length; i += 1)
{
if (thisBytes[i] == thatBytes[i])
continue;
return false;
}
return true;
}
private static short ReadLittleEndianInt16(BinaryReader binaryReader)
{
byte[] bytes = new byte[sizeof(short)];
for (int i = 0; i < sizeof(short); i += 1)
bytes[sizeof(short) - 1 - i] = binaryReader.ReadByte();
return BitConverter.ToInt16(bytes, 0);
}
private static int ReadLittleEndianInt32(BinaryReader binaryReader)
{
byte[] bytes = new byte[sizeof(int)];
for (int i = 0; i < sizeof(int); i += 1)
bytes[sizeof(int) - 1 - i] = binaryReader.ReadByte();
return BitConverter.ToInt32(bytes, 0);
}
private static Size? DecodeBitmap(BinaryReader binaryReader)
{
_ = binaryReader.ReadBytes(16);
int width = binaryReader.ReadInt32();
int height = binaryReader.ReadInt32();
return new Size(width, height);
}
private static Size? DecodeGif(BinaryReader binaryReader)
{
int width = binaryReader.ReadInt16();
int height = binaryReader.ReadInt16();
return new Size(width, height);
}
private static Size? DecodePng(BinaryReader binaryReader)
{
_ = binaryReader.ReadBytes(8);
int width = ReadLittleEndianInt32(binaryReader);
int height = ReadLittleEndianInt32(binaryReader);
return new Size(width, height);
}
private static Size? DecodeJfif(BinaryReader binaryReader)
{
while (binaryReader.ReadByte() == 0xff)
{
byte marker = binaryReader.ReadByte();
short chunkLength = ReadLittleEndianInt16(binaryReader);
if (marker == 0xc0)
{
_ = binaryReader.ReadByte();
int height = ReadLittleEndianInt16(binaryReader);
int width = ReadLittleEndianInt16(binaryReader);
return new Size(width, height);
}
if (chunkLength >= 0)
_ = binaryReader.ReadBytes(chunkLength - 2);
else
{
ushort uChunkLength = (ushort)chunkLength;
_ = binaryReader.ReadBytes(uChunkLength - 2);
}
}
return null;
}
private static Size? DecodeWebP(BinaryReader binaryReader)
{
_ = binaryReader.ReadUInt32(); // Size
_ = binaryReader.ReadBytes(15); // WEBP, VP8 + more
_ = binaryReader.ReadBytes(3); // SYNC
int width = binaryReader.ReadUInt16() & 0b00_11111111111111; // 14 bits width
int height = binaryReader.ReadUInt16() & 0b00_11111111111111; // 14 bits height
return new Size(width, height);
}
internal static Size GetDimensions(BinaryReader binaryReader, int? faceRight, int? faceBottom)
{
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
{
result = null;
if (binaryReader.BaseStream.Length == binaryReader.BaseStream.Position)
_ = binaryReader.BaseStream.Seek(0, SeekOrigin.Begin);
for (int i = 0; i < magicBytesLengths[0]; i++)
{
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;
}
}
if (result is null)
{
if (faceRight is null || faceBottom is null)
throw new Exception("face is null!");
result = new(faceRight.Value, faceBottom.Value);
}
return result.Value;
}
internal static Size GetDimensions(string path, int? faceRight, int? faceBottom)
{
Size result;
using FileStream fileStream = File.OpenRead(path);
using BinaryReader binaryReader = new(fileStream);
result = GetDimensions(binaryReader, faceRight, faceBottom);
return result;
}
}

View File

@ -1,132 +0,0 @@
using System.Drawing;
namespace View_by_Distance.Shared.Models.Stateless.Methods;
internal abstract class ImageHelper
{
private static bool StartsWith(byte[] thisBytes, byte[] thatBytes)
{
for (int i = 0; i < thatBytes.Length; i += 1)
{
if (thisBytes[i] != thatBytes[i])
return false;
}
return true;
}
private static short ReadLittleEndianInt16(BinaryReader binaryReader)
{
byte[] bytes = new byte[sizeof(short)];
for (int i = 0; i < sizeof(short); i += 1)
bytes[sizeof(short) - 1 - i] = binaryReader.ReadByte();
return BitConverter.ToInt16(bytes, 0);
}
private static int ReadLittleEndianInt32(BinaryReader binaryReader)
{
byte[] bytes = new byte[sizeof(int)];
for (int i = 0; i < sizeof(int); i += 1)
bytes[sizeof(int) - 1 - i] = binaryReader.ReadByte();
return BitConverter.ToInt32(bytes, 0);
}
private static Size DecodeBitmap(BinaryReader binaryReader)
{
_ = binaryReader.ReadBytes(16);
int width = binaryReader.ReadInt32();
int height = binaryReader.ReadInt32();
return new Size(width, height);
}
private static Size DecodeGif(BinaryReader binaryReader)
{
int width = binaryReader.ReadInt16();
int height = binaryReader.ReadInt16();
return new Size(width, height);
}
private static Size DecodePng(BinaryReader binaryReader)
{
_ = binaryReader.ReadBytes(8);
int width = ReadLittleEndianInt32(binaryReader);
int height = ReadLittleEndianInt32(binaryReader);
return new Size(width, height);
}
private static Size DecodeJfif(BinaryReader binaryReader)
{
while (binaryReader.ReadByte() == 0xff)
{
byte marker = binaryReader.ReadByte();
short chunkLength = ReadLittleEndianInt16(binaryReader);
if (marker == 0xc0)
{
_ = binaryReader.ReadByte();
int height = ReadLittleEndianInt16(binaryReader);
int width = ReadLittleEndianInt16(binaryReader);
return new Size(width, height);
}
_ = binaryReader.ReadBytes(chunkLength - 2);
}
throw new ArgumentException("Could not recognize image format.");
}
/// <summary>
/// Gets the dimensions of an image.
/// </summary>
/// <param name="path">The path of the image to get the dimensions of.</param>
/// <returns>The dimensions of the specified image.</returns>
/// <exception cref="ArgumentException">The image was of an unrecognized format.</exception>
internal static Size GetDimensions(BinaryReader binaryReader, int? faceRight, int? faceBottom)
{
Size? result = null;
#pragma warning disable IDE0230
Dictionary<byte[], Func<BinaryReader, Size>> _ImageFormatDecoders = new()
{
{ new byte[] { 0x42, 0x4D }, DecodeBitmap },
{ 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 },
};
#pragma warning restore IDE0230
int maxMagicBytesLength = _ImageFormatDecoders.Keys.OrderByDescending(x => x.Length).First().Length;
byte[] magicBytes = new byte[maxMagicBytesLength];
for (int i = 0; i < maxMagicBytesLength; i += 1)
{
magicBytes[i] = binaryReader.ReadByte();
foreach (KeyValuePair<byte[], Func<BinaryReader, Size>> kvPair in _ImageFormatDecoders)
{
if (!StartsWith(magicBytes, kvPair.Key))
continue;
result = kvPair.Value(binaryReader);
break;
}
if (result is not null)
break;
}
if (result is null)
{
if (faceRight is null || faceBottom is null)
throw new Exception("face is null!");
result = new(faceRight.Value, faceBottom.Value);
}
return result.Value;
}
/// <summary>
/// Gets the dimensions of an image.
/// </summary>
/// <param name="path">The path of the image to get the dimensions of.</param>
/// <returns>The dimensions of the specified image.</returns>
/// <exception cref="ArgumentException">The image was of an unrecognized format.</exception>
internal static Size GetDimensions(string path, int? faceRight, int? faceBottom)
{
Size result;
using BinaryReader binaryReader = new(File.OpenRead(path));
result = GetDimensions(binaryReader, faceRight, faceBottom);
return result;
}
}