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Packages/com.tivadar.best.http/Runtime/Shared/Logger/FileOutput.cs

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+using System;
+using System.IO;
+
+using Best.HTTP.Shared.PlatformSupport.FileSystem;
+using Best.HTTP.Shared.PlatformSupport.Memory;
+
+namespace Best.HTTP.Shared.Logger
+{
+    /// <summary>
+    /// Provides an implementation of <see cref="ILogOutput"/> that writes log messages to a file.
+    /// </summary>
+    public sealed class FileOutput : ILogOutput
+    {
+        /// <summary>
+        /// Gets a value indicating whether this log output accepts color codes. Always returns <c>false</c>.
+        /// </summary>
+        public bool AcceptColor { get; } = false;
+
+        private Stream fileStream;
+
+        /// <summary>
+        /// Initializes a new instance of the FileOutput class with the specified file name.
+        /// </summary>
+        /// <param name="fileName">The name of the file to write log messages to.</param>
+        public FileOutput(string fileName)
+        {
+            // Create a buffered stream for writing log messages to the specified file.
+            this.fileStream = new BufferedStream(HTTPManager.IOService.CreateFileStream(fileName, FileStreamModes.Create), 512 * 1024);
+        }
+
+        /// <summary>
+        /// Writes a log message to the file.
+        /// </summary>
+        /// <param name="level">The log level of the message.</param>
+        /// <param name="logEntry">The log message to write.</param>
+        public void Write(Loglevels level, string logEntry)
+        {
+            if (this.fileStream != null && !string.IsNullOrEmpty(logEntry))
+            {
+                int count = System.Text.Encoding.UTF8.GetByteCount(logEntry) + 2;
+                var buffer = BufferPool.Get(count, true);
+
+                try
+                {
+                    System.Text.Encoding.UTF8.GetBytes(logEntry, 0, logEntry.Length, buffer, 0);
+                    buffer[count - 2] = (byte)'\r';
+                    buffer[count - 1] = (byte)'\n';
+
+                    this.fileStream.Write(buffer, 0, count);
+                }
+                finally
+                {
+                    BufferPool.Release(buffer);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Flushes any buffered log messages to the file.
+        /// </summary>
+        public void Flush() => this.fileStream?.Flush();
+
+        /// <summary>
+        /// Releases any resources used by the FileOutput instance.
+        /// </summary>
+        public void Dispose()
+        {
+            if (this.fileStream != null)
+            {
+                this.fileStream.Close();
+                this.fileStream = null;
+            }
+
+            GC.SuppressFinalize(this);
+        }
+    }
+}