添加项目文件。

Core/MAX.Core/Helpers/FileHelper.cs

@@ -0,0 +1,188 @@
+using System.IO;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MAX.Core.Helpers;
+
+/// <summary>
+/// 文件和流操作
+/// </summary>
+public static partial class FileHelper
+{
+	/// <summary>
+	/// 流转换为字节流
+	/// </summary>
+	/// <param name="stream">流</param>
+	public static async Task<byte[]> ToBytesAsync(Stream stream)
+	{
+		stream.Seek(0, SeekOrigin.Begin);
+		byte[] buffer = new byte[stream.Length];
+		await stream.ReadAsync(buffer, 0, buffer.Length);
+		return buffer;
+	}
+
+	/// <summary>
+	/// 流转换为字节流
+	/// </summary>
+	/// <param name="stream">流</param>
+	public static byte[] ToBytes(Stream stream)
+	{
+		stream.Seek(0, SeekOrigin.Begin);
+		byte[] buffer = new byte[stream.Length];
+		stream.Read(buffer, 0, buffer.Length);
+		return buffer;
+	}
+
+	/// <summary>
+	/// 字符串转换成字节数组
+	/// </summary>
+	/// <param name="data">数据,默认字符编码utf-8</param>        
+	public static byte[] ToBytes(string data)
+	{
+		return ToBytes(data, Encoding.UTF8);
+	}
+
+	/// <summary>
+	/// 字符串转换成字节数组
+	/// </summary>
+	/// <param name="data">数据</param>
+	/// <param name="encoding">字符编码</param>
+	public static byte[] ToBytes(string data, Encoding encoding)
+	{
+		if (string.IsNullOrWhiteSpace(data))
+		{
+			return new byte[] { };
+		}
+
+		return encoding.GetBytes(data);
+	}
+
+	/// <summary>
+	/// 将文件读取到字节流中
+	/// </summary>
+	/// <param name="filePath">文件的绝对路径</param>
+	public static byte[] Read(string filePath)
+	{
+		if (!File.Exists(filePath))
+		{
+			return null;
+		}
+
+		FileInfo fileInfo = new(filePath);
+		using BinaryReader reader = new(fileInfo.Open(FileMode.Open));
+		return reader.ReadBytes((int)fileInfo.Length);
+	}
+
+	/// <summary>
+	/// 流转换成字符串
+	/// </summary>
+	/// <param name="stream">流</param>
+	/// <param name="encoding">字符编码</param>
+	/// <param name="bufferSize">缓冲区大小</param>
+	/// <param name="isCloseStream">读取完成是否释放流，默认为true</param>
+	public static string ToString(Stream stream, Encoding encoding = null, int bufferSize = 1024 * 2, bool isCloseStream = true)
+	{
+		if (stream == null)
+		{
+			return string.Empty;
+		}
+
+		encoding ??= Encoding.UTF8;
+
+		if (stream.CanRead == false)
+		{
+			return string.Empty;
+		}
+
+		using StreamReader reader = new(stream, encoding, true, bufferSize, !isCloseStream);
+		if (stream.CanSeek)
+		{
+			stream.Seek(0, SeekOrigin.Begin);
+		}
+
+		string result = reader.ReadToEnd();
+		if (stream.CanSeek)
+		{
+			stream.Seek(0, SeekOrigin.Begin);
+		}
+
+		return result;
+	}
+
+	/// <summary>
+	/// 流转换成字符串
+	/// </summary>
+	/// <param name="stream">流</param>
+	/// <param name="encoding">字符编码</param>
+	/// <param name="bufferSize">缓冲区大小</param>
+	/// <param name="isCloseStream">读取完成是否释放流，默认为true</param>
+	public static async Task<string> ToStringAsync(Stream stream, Encoding encoding = null, int bufferSize = 1024 * 2, bool isCloseStream = true)
+	{
+		if (stream == null)
+		{
+			return string.Empty;
+		}
+
+		encoding ??= Encoding.UTF8;
+
+		if (stream.CanRead == false)
+		{
+			return string.Empty;
+		}
+
+		using StreamReader reader = new(stream, encoding, true, bufferSize, !isCloseStream);
+		if (stream.CanSeek)
+		{
+			stream.Seek(0, SeekOrigin.Begin);
+		}
+
+		string result = await reader.ReadToEndAsync();
+		if (stream.CanSeek)
+		{
+			stream.Seek(0, SeekOrigin.Begin);
+		}
+
+		return result;
+	}
+
+	/// <summary>
+	/// 复制流并转换成字符串
+	/// </summary>
+	/// <param name="stream">流</param>
+	/// <param name="encoding">字符编码</param>
+	public static async Task<string> CopyToStringAsync(Stream stream, Encoding encoding = null)
+	{
+		if (stream == null)
+		{
+			return string.Empty;
+		}
+
+		encoding ??= Encoding.UTF8;
+
+		if (stream.CanRead == false)
+		{
+			return string.Empty;
+		}
+
+		using MemoryStream memoryStream = new();
+		using StreamReader reader = new(memoryStream, encoding);
+		if (stream.CanSeek)
+		{
+			stream.Seek(0, SeekOrigin.Begin);
+		}
+
+		stream.CopyTo(memoryStream);
+		if (memoryStream.CanSeek)
+		{
+			memoryStream.Seek(0, SeekOrigin.Begin);
+		}
+
+		string result = await reader.ReadToEndAsync();
+		if (stream.CanSeek)
+		{
+			stream.Seek(0, SeekOrigin.Begin);
+		}
+
+		return result;
+	}
+}