BencodeNET/BencodeNET/Objects/BObjectExtensions.cs at master · Krusen/BencodeNET · GitHub

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using System;

using System.Buffers;

using System.IO;

using System.Text;

namespace BencodeNET.Objects

{

/// <summary>

/// Extensions to simplify encoding directly as a string or byte array.

/// </summary>

public static class BObjectExtensions

{

/// <summary>

/// Encodes the object and returns the result as a string using <see cref="Encoding.UTF8"/>.

/// </summary>

/// <returns>The object bencoded and converted to a string using <see cref="Encoding.UTF8"/>.</returns>

public static string EncodeAsString(this IBObject bobject) => EncodeAsString(bobject, Encoding.UTF8);

/// <summary>

/// Encodes the byte-string as bencode and returns the encoded string.

/// Uses the current value of the <see cref="Encoding"/> property.

/// </summary>

/// <returns>The byte-string as a bencoded string.</returns>

public static string EncodeAsString(this BString bstring) => EncodeAsString(bstring, bstring.Encoding);

/// <summary>

/// Encodes the object and returns the result as a string using the specified encoding.

/// </summary>

/// <param name="bobject"></param>

/// <param name="encoding">The encoding used to convert the encoded bytes to a string.</param>

/// <returns>The object bencoded and converted to a string using the specified encoding.</returns>

public static string EncodeAsString(this IBObject bobject, Encoding encoding)

{

var size = bobject.GetSizeInBytes();

var buffer = ArrayPool<byte>.Shared.Rent(size);

try

{

using (var stream = new MemoryStream(buffer))

{

bobject.EncodeTo(stream);

return encoding.GetString(buffer.AsSpan().Slice(0, size));

}

finally { ArrayPool<byte>.Shared.Return(buffer); }

}

/// <summary>

/// Encodes the object and returns the raw bytes.

/// </summary>

/// <returns>The raw bytes of the bencoded object.</returns>

public static byte[] EncodeAsBytes(this IBObject bobject)

{

var size = bobject.GetSizeInBytes();

var bytes = new byte[size];

using (var stream = new MemoryStream(bytes))

{

bobject.EncodeTo(stream);

return bytes;

}

/// <summary>

/// Writes the object as bencode to the specified file path.

/// </summary>

/// <param name="bobject"></param>

/// <param name="filePath">The file path to write the encoded object to.</param>

public static void EncodeTo(this IBObject bobject, string filePath)

{

using (var stream = File.OpenWrite(filePath))

{

bobject.EncodeTo(stream);

}

BencodeNET/BencodeNET/Objects/BObjectExtensions.cs at master · Krusen/BencodeNET · GitHub

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