chore: import upstream snapshot with attribution

2026-07-13 13:02:50 +08:00
commit 0fc60fdcb1
5008 changed files with 910633 additions and 0 deletions
@@ -0,0 +1,103 @@
+/*
+ * QUANTCONNECT.COM - Democratizing Finance, Empowering Individuals.
+ * Lean Algorithmic Trading Engine v2.0. Copyright 2014 QuantConnect Corporation.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+*/
+
+using System;
+using System.Globalization;
+using System.IO;
+
+namespace QuantConnect.Logging
+{
+    /// <summary>
+    /// ILogHandler implementation that writes log output to console.
+    /// </summary>
+    public class ConsoleLogHandler : ILogHandler
+    {
+        private const string DefaultDateFormat = "yyyyMMdd HH:mm:ss.fff";
+        private readonly TextWriter _trace;
+        private readonly TextWriter _error;
+        private readonly string _dateFormat;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="QuantConnect.Logging.ConsoleLogHandler"/> class.
+        /// </summary>
+        public ConsoleLogHandler()
+            : this(DefaultDateFormat)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="QuantConnect.Logging.ConsoleLogHandler"/> class.
+        /// </summary>
+        /// <param name="dateFormat">Specifies the date format to use when writing log messages to the console window</param>
+        public ConsoleLogHandler(string dateFormat = DefaultDateFormat)
+        {
+            // saves references to the real console text writer since in a deployed state we may overwrite this in order
+            // to redirect messages from algorithm to result handler
+            _trace = Console.Out;
+            _error = Console.Error;
+            _dateFormat = dateFormat;
+        }
+
+        /// <summary>
+        /// Write error message to log
+        /// </summary>
+        /// <param name="text">The error text to log</param>
+        public virtual void Error(string text)
+        {
+#if DEBUG
+            Console.ForegroundColor = ConsoleColor.Red;
+#endif
+            _error.WriteLine($"{DateTime.UtcNow.ToString(_dateFormat, CultureInfo.InvariantCulture)} ERROR:: {text}");
+#if DEBUG
+            Console.ResetColor();
+#endif
+        }
+
+        /// <summary>
+        /// Write debug message to log
+        /// </summary>
+        /// <param name="text">The debug text to log</param>
+        public virtual void Debug(string text)
+        {
+            _trace.WriteLine($"{DateTime.UtcNow.ToString(_dateFormat, CultureInfo.InvariantCulture)} DEBUG:: {text}");
+        }
+
+        /// <summary>
+        /// Write debug message to log
+        /// </summary>
+        /// <param name="text">The trace text to log</param>
+        public virtual void Trace(string text)
+        {
+            _trace.WriteLine($"{DateTime.UtcNow.ToString(_dateFormat, CultureInfo.InvariantCulture)} TRACE:: {text}");
+        }
+
+        /// <summary>
+        /// Write report message to log
+        /// </summary>
+        /// <param name="text">The report text to log</param>
+        public virtual void Report(string text)
+        {
+            _trace.WriteLine($"{DateTime.UtcNow.ToString(_dateFormat, CultureInfo.InvariantCulture)} REPORT:: {text}");
+        }
+
+        /// <summary>
+        /// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
+        /// </summary>
+        /// <filterpriority>2</filterpriority>
+        public void Dispose()
+        {
+        }
+    }
+}