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Helper.cs
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Helper.cs
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using System.Collections.Specialized;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Security.Cryptography;
using System.Text;
namespace Helper;
public static class LOG
{
public static void Info(string message)
{
Console.WriteLine(message);
Trace.WriteLine(message);
}
public static void Debug(string message)
{
Trace.WriteLine(message);
}
public static void Error(string message)
{
Console.WriteLine(message);
Trace.WriteLine(message);
}
}
public static class NameValueCollectionExtensions
{
public static T? Convert<T>(this NameValueCollection c, string v)
{
if (typeof(T) == typeof(string))
{
return (T?)(object?)c.GetValues(v)?.FirstOrDefault();
}
else if (typeof(T) == typeof(bool))
{
if (c.GetValues(v) == null) return (T)(Object)false;
return (T?)(object?)c.GetValues(v)?.FirstOrDefault().ToBool();
}
return default;
}
}
public static class StringExtensions
{
public static bool ToBool(this string? str) => str?.ToLower() == "true";
}
public static class StreamExtensions
{
public static string CalculateSha256Hash(this Stream stream, long size = -1)
{
const int BLOCK_SIZE = 4096;
byte[] buffer = new byte[BLOCK_SIZE];
using SHA256 sha256 = SHA256.Create();
int bytesRead;
long totalBytesRead = 0;
if (size == -1)
{
while ((bytesRead = stream.Read(buffer, 0, BLOCK_SIZE)) > 0)
{
sha256.TransformBlock(buffer, 0, bytesRead, null, 0);
totalBytesRead += bytesRead;
}
}
else
{
while (totalBytesRead < size &&
(bytesRead = stream.Read(buffer, 0, (int)Math.Min(size - totalBytesRead, BLOCK_SIZE))) > 0)
{
sha256.TransformBlock(buffer, 0, bytesRead, null, 0);
totalBytesRead += bytesRead;
}
}
sha256.TransformFinalBlock(buffer, 0, 0);
Debug.Assert(sha256.Hash != null);
LOG.Debug($"Calculate SHA : data {totalBytesRead} bytes, size Param: {size}");
return BitConverter.ToString(sha256.Hash).Replace("-", "").ToLower();
}
public static T Read<T>(this Stream stream) where T : struct
{
int size = Marshal.SizeOf<T>();
byte[] buffer = new byte[size];
stream.Read(buffer, 0, size);
IntPtr ptr = Marshal.AllocHGlobal(size);
Marshal.Copy(buffer, 0, ptr, size);
#pragma warning disable IL2091 // Target generic argument does not satisfy 'DynamicallyAccessedMembersAttribute' in target method or type. The generic parameter of the source method or type does not have matching annotations.
T result = Marshal.PtrToStructure<T>(ptr);
#pragma warning restore IL2091 // Target generic argument does not satisfy 'DynamicallyAccessedMembersAttribute' in target method or type. The generic parameter of the source method or type does not have matching annotations.
Marshal.FreeHGlobal(ptr);
return result;
}
public static int Write<T>(this Stream stream, T value) where T : struct
{
int size = Marshal.SizeOf(value);
byte[] buffer = new byte[size];
IntPtr ptr = Marshal.AllocHGlobal(size);
Marshal.StructureToPtr(value, ptr, true);
Marshal.Copy(ptr, buffer, 0, size);
Marshal.FreeHGlobal(ptr);
stream.Write(buffer, 0, buffer.Length);
return buffer.Length;
}
public static int WriteInt(this Stream stream, int value)
{
stream.Write(BitConverter.GetBytes(value), 0, sizeof(int));
return sizeof(int);
}
/// <summary>
/// Read from stream to get a string.
/// </summary>
/// <param name="stream"></param>
/// <param name="byteSize"> Must be a correct value or the string returned is useless </param>
/// <returns></returns>
public static string ReadString(this Stream stream, int byteSize, Encoding? encoding = null)
{
encoding ??= Encoding.UTF8;
var buffer = new byte[byteSize];
stream.Read(buffer, 0, byteSize);
return encoding.GetString(buffer);
}
/// <summary>
/// Write string to stream
/// </summary>
/// <param name="stream"></param>
/// <param name="value"></param>
/// <param name="encoding"> what encoding to write, default UTF-8 </param>
/// <returns> bytes written count </returns>
public static int WriteString(this Stream stream, string value, Encoding? encoding = null)
{
encoding ??= Encoding.UTF8;
var buffer = encoding.GetBytes(value);
stream.Write(buffer, 0, buffer.Length);
return buffer.Length;
}
/// <summary>
/// Copy from source to dest with specific size of data.
/// </summary>
/// <param name="source"></param>
/// <param name="dest"></param>
/// <param name="size"></param>
/// <exception cref="InvalidOperationException"></exception>
/// <exception cref="ArgumentOutOfRangeException"></exception>
public async static Task CopyToNAsync(this Stream source, Stream dest, long size)
{
ArgumentNullException.ThrowIfNull(source);
ArgumentNullException.ThrowIfNull(dest);
if (!source.CanRead)
throw new InvalidOperationException("Source stream cannot be read.");
if (!dest.CanWrite)
throw new InvalidOperationException("Destination stream cannot be written to.");
if (size < 0)
throw new ArgumentOutOfRangeException(nameof(size), "The size must be non-negative.");
// create buffer
byte[] buffer = new byte[8192];
long totalBytesRead = 0;
int bytesRead;
while (totalBytesRead < size &&
(bytesRead = await source.ReadAsync( buffer.AsMemory( 0, (int)Math.Min(buffer.Length, size - totalBytesRead) ) ) ) > 0)
{
await dest.WriteAsync( buffer.AsMemory( 0, bytesRead ) );
totalBytesRead += bytesRead;
}
}
}
public static class Directory
{
public static List<string>? GetAllFiles(string directoryPath)
{
List<string> files = [];
string[] filePaths = System.IO.Directory.GetFiles(directoryPath);
string[] subDirectoryPaths = System.IO.Directory.GetDirectories(directoryPath);
files.AddRange(filePaths);
foreach (string subDirectoryPath in subDirectoryPaths)
{
var n = GetAllFiles(subDirectoryPath);
if (n != null) files.AddRange(n);
}
return files;
}
}