update

ExtremelySimpleLogger/DirectorySink.cs

@@ -36,9 +36,14 @@ namespace ExtremelySimpleLogger {
         public DirectorySink(DirectoryInfo directory, int maxFiles = 10, bool reopenOnWrite = false, string dateFormat = DefaultDateFormat) {
             this.reopenOnWrite = reopenOnWrite;
 
+            try {
                 if (!directory.Exists)
                     directory.Create();
+            } catch (Exception e) {
+                throw new IOException($"Failed to create directory sink directory {directory}", e);
+            }
 
+            try {
                 // delete old files
                 var files = directory.GetFiles();
                 if (files.Length >= maxFiles) {
@@ -49,11 +54,14 @@ namespace ExtremelySimpleLogger {
                         ordered.RemoveAt(0);
                     }
                 }
+            } catch (Exception e) {
+                throw new IOException($"Failed to delete old files in directory sink {directory}", e);
+            }
 
             var date = DateTime.Now.ToString(dateFormat);
             this.file = new FileInfo(Path.Combine(directory.FullName, $"{date}.txt"));
             if (!reopenOnWrite) {
-                this.writer = this.file.AppendText();
+                this.writer = this.Append();
                 this.writer.AutoFlush = true;
             }
         }
@@ -67,7 +75,7 @@ namespace ExtremelySimpleLogger {
         protected override void Log(Logger logger, LogLevel level, string s) {
             lock (this.file) {
                 if (this.reopenOnWrite) {
-                    using (var w = this.file.AppendText())
+                    using (var w = this.Append())
                         w.WriteLine(s);
                 } else {
                     this.writer.WriteLine(s);
@@ -86,5 +94,13 @@ namespace ExtremelySimpleLogger {
             }
         }
 
+        private StreamWriter Append() {
+            try {
+                return this.file.AppendText();
+            } catch (Exception e) {
+                throw new IOException($"Failed to append to directory sink file {this.file}", e);
+            }
+        }
+
     }
 }

ExtremelySimpleLogger/ExtremelySimpleLogger.csproj

@@ -12,6 +12,13 @@
         <PackageProjectUrl>https://github.com/Ellpeck/ExtremelySimpleLogger</PackageProjectUrl>
         <RepositoryUrl>https://github.com/Ellpeck/ExtremelySimpleLogger</RepositoryUrl>
         <PackageLicenseExpression>MIT</PackageLicenseExpression>
-        <VersionPrefix>1.2.3</VersionPrefix>
+        <PackageReadmeFile>README.md</PackageReadmeFile>
+        <PackageIcon>Logo.png</PackageIcon>
+        <VersionPrefix>1.2.4</VersionPrefix>
     </PropertyGroup>
+    
+    <ItemGroup>
+        <None Include="../README.md" Pack="true" PackagePath="" />
+        <None Include="../Logo.png" Pack="true" PackagePath="" />
+    </ItemGroup>
 </Project>

ExtremelySimpleLogger/FileSink.cs

@@ -1,3 +1,4 @@
+using System;
 using System.IO;
 
 namespace ExtremelySimpleLogger {
@@ -33,15 +34,23 @@ namespace ExtremelySimpleLogger {
             this.reopenOnWrite = reopenOnWrite;
             this.file = file;
 
+            try {
                 var dir = file.Directory;
                 if (dir != null && !dir.Exists)
                     dir.Create();
+            } catch (Exception e) {
+                throw new IOException($"Failed to create directory for file sink {file}", e);
+            }
 
+            try {
                 if (file.Exists && (!append || file.Length >= fileSizeLimit))
                     file.Delete();
+            } catch (Exception e) {
+                throw new IOException($"Failed to delete file sink file {file}", e);
+            }
 
             if (!reopenOnWrite) {
-                this.writer = file.AppendText();
+                this.writer = this.Append();
                 this.writer.AutoFlush = true;
             }
         }
@@ -55,7 +64,7 @@ namespace ExtremelySimpleLogger {
         protected override void Log(Logger logger, LogLevel level, string s) {
             lock (this.file) {
                 if (this.reopenOnWrite) {
-                    using (var w = this.file.AppendText())
+                    using (var w = this.Append())
                         w.WriteLine(s);
                 } else {
                     this.writer.WriteLine(s);
@@ -74,5 +83,13 @@ namespace ExtremelySimpleLogger {
             }
         }
 
+        private StreamWriter Append() {
+            try {
+                return this.file.AppendText();
+            } catch (Exception e) {
+                throw new IOException($"Failed to append to file sink {this.file}", e);
+            }
+        }
+
     }
 }

ExtremelySimpleLogger/StringSink.cs

@@ -7,9 +7,8 @@ namespace ExtremelySimpleLogger {
     /// </summary>
     public class StringSink : Sink {
 
-        private readonly StringBuilder builder = new StringBuilder();
         /// <summary>
-        /// The string that this sink currently contains.
+        /// The string that this sink currently contains, constructed from the underlying <see cref="StringBuilder"/>.
         /// Can be cleared using <see cref="Clear"/>.
         /// </summary>
         public string Value {
@@ -18,6 +17,18 @@ namespace ExtremelySimpleLogger {
                     return this.builder.ToString();
             }
         }
+        /// <summary>
+        /// The <see cref="StringBuilder"/> used to collect logged data from this sink.
+        /// To get its value directly, you can use <see cref="Value"/>.
+        /// </summary>
+        public StringBuilder StringBuilder {
+            get {
+                lock (this.builder)
+                    return this.builder;
+            }
+        }
+
+        private readonly StringBuilder builder = new StringBuilder();
 
         /// <summary>
         /// Logs the given message, which has already been formatted using <see cref="Sink.Formatter"/>.

README.md

@@ -1,5 +1,6 @@
-# ExtremelySimpleLogger
+![The ExtremelySimpleLogger logo](https://raw.githubusercontent.com/Ellpeck/ExtremelySimpleLogger/main/Logo.png)
-**A very simple logger for .NET programs.**
+
+**ExtremelySimpleLogger** is a very simple logger for .NET programs.
 
 To set up an extremely simple logger, add a reference to the [NuGet package](https://www.nuget.org/packages/ExtremelySimpleLogger/) to your project file. Remember to change the `VERSION` to the most recent one.
 ```xml