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/*
* GNU AFFERO GENERAL PUBLIC LICENSE
* Version 3, 19 November 2007
* Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
* Everyone is permitted to copy and distribute verbatim copies
* of this license document, but changing it is not allowed.
*/
using System;
using System.IO;
using System.Security.Cryptography;
using BinarySerialization;
using Newtonsoft.Json;
using SixLabors.ImageSharp.Formats.Bmp;
using SixLabors.ImageSharp.Formats.Png;
using SixLabors.ImageSharp.PixelFormats;
namespace PrusaSL1Reader
{
/// <summary>
/// A helper class with utilities
/// </summary>
public static class Helpers
{
public static PngEncoder PngEncoder { get; } = new PngEncoder();
public static BmpEncoder BmpEncoder { get; } = new BmpEncoder();
/// <summary>
/// Gets the <see cref="BinarySerializer"/> instance
/// </summary>
public static BinarySerializer Serializer { get; } = new BinarySerializer {Endianness = Endianness.Little };
/// <summary>
/// Gets a white color of <see cref="L8"/>
/// </summary>
public static L8 L8White { get; } = new L8(255);
/*public static T ByteToType<T>(BinaryReader reader)
{
byte[] bytes = reader.ReadBytes(Marshal.SizeOf(typeof(T)));
GCHandle handle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
T theStructure = (T)Marshal.PtrToStructure(handle.AddrOfPinnedObject(), typeof(T));
handle.Free();
return theStructure;
}
public static byte[] SerializeToBytes<T>(T item)
{
var formatter = new BinaryFormatter();
using (var stream = new MemoryStream())
{
formatter.Serialize(stream, item);
stream.Seek(0, SeekOrigin.Begin);
return stream.ToArray();
}
}*/
public static MemoryStream Serialize(object value)
{
MemoryStream stream = new MemoryStream();
Serializer.Serialize(stream, value);
return stream;
}
public static T Deserialize<T>(BinaryReader binaryReader)
{
return Deserialize<T>(binaryReader.BaseStream);
}
public static T Deserialize<T>(Stream stream)
{
return Serializer.Deserialize<T>(stream);
}
public static uint WriteFileStream(FileStream fs, MemoryStream stream, uint offset = 0)
{
return WriteFileStream(fs, stream.ToArray(), offset);
}
public static uint WriteFileStream(FileStream fs, byte[] bytes, uint offset = 0)
{
fs.Write(bytes, 0, bytes.Length);
return (uint)bytes.Length;
}
public static uint SerializeWriteFileStream(FileStream fs, object value, uint offset = 0)
{
using (MemoryStream stream = Helpers.Serialize(value))
{
return WriteFileStream(fs, stream);
}
}
public static T JsonDeserializeObject<T>(Stream stream)
{
using (TextReader tr = new StreamReader(stream))
{
return JsonConvert.DeserializeObject<T>(tr.ReadToEnd());
}
}
public static SHA1CryptoServiceProvider SHA1 { get; } = new SHA1CryptoServiceProvider();
public static string ComputeSHA1Hash(byte[] input)
{
return Convert.ToBase64String(SHA1.ComputeHash(input));
}
}
}
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