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LogFile.cs
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// ReSharper disable MemberCanBePrivate.Global
// ReSharper disable UnusedMember.Global
namespace PSLogging
{
using System;
using System.IO;
using System.Management.Automation;
public class LogFile : HostIOSubscriberBase
{
#region Fields
private readonly string fileName;
private readonly string path;
#endregion
#region Constructors and Destructors
public LogFile(string filename,
StreamType streams = StreamType.All,
ScriptBlock errorCallback = null,
string dateTimeFormat = "r")
{
fileName = System.IO.Path.GetFileName(filename);
path = System.IO.Path.GetDirectoryName(filename);
Streams = streams;
ErrorCallback = errorCallback;
DateTimeFormat = dateTimeFormat;
}
#endregion
#region Properties
public ScriptBlock ErrorCallback { get; set; }
public string Path
{
get { return System.IO.Path.Combine(path, fileName); }
}
public StreamType Streams { get; set; }
public string DateTimeFormat { get; set; }
#endregion
#region Public Methods and Operators
//
// IPSOutputSubscriber
//
public override void WriteDebug(string message)
{
if ((Streams & StreamType.Debug) != StreamType.Debug)
{
return;
}
if (message == null)
{
message = String.Empty;
}
try
{
CheckDirectory();
if (message != String.Empty)
{
message = String.Format("{0,-29} - [D] {1}", DateTime.UtcNow.ToString(DateTimeFormat), message);
}
File.AppendAllText(System.IO.Path.Combine(path, fileName), message);
}
catch (Exception e)
{
ReportError(e);
}
}
public override void WriteError(string message)
{
if ((Streams & StreamType.Error) != StreamType.Error)
{
return;
}
if (message == null)
{
message = String.Empty;
}
try
{
CheckDirectory();
if (message.Trim() != String.Empty)
{
message = String.Format("{0,-29} - [E] {1}", DateTime.UtcNow.ToString(DateTimeFormat), message);
}
File.AppendAllText(System.IO.Path.Combine(path, fileName), message);
}
catch (Exception e)
{
ReportError(e);
}
}
public override void WriteOutput(string message)
{
if ((Streams & StreamType.Output) != StreamType.Output)
{
return;
}
if (message == null)
{
message = String.Empty;
}
try
{
CheckDirectory();
if (message.Trim() != String.Empty)
{
message = String.Format("{0,-29} - {1}", DateTime.UtcNow.ToString(DateTimeFormat), message);
}
File.AppendAllText(System.IO.Path.Combine(path, fileName), message);
}
catch (Exception e)
{
ReportError(e);
}
}
public override void WriteVerbose(string message)
{
if ((Streams & StreamType.Verbose) != StreamType.Verbose)
{
return;
}
if (message == null)
{
message = String.Empty;
}
try
{
CheckDirectory();
if (message.Trim() != String.Empty)
{
message = String.Format("{0,-29} - [V] {1}", DateTime.UtcNow.ToString(DateTimeFormat), message);
}
File.AppendAllText(System.IO.Path.Combine(path, fileName), message);
}
catch (Exception e)
{
ReportError(e);
}
}
public override void WriteWarning(string message)
{
if ((Streams & StreamType.Warning) != StreamType.Warning)
{
return;
}
if (message == null)
{
message = String.Empty;
}
try
{
CheckDirectory();
if (message.Trim() != String.Empty)
{
message = String.Format("{0,-29} - [W] {1}", DateTime.UtcNow.ToString(DateTimeFormat), message);
}
File.AppendAllText(System.IO.Path.Combine(path, fileName), message);
}
catch (Exception e)
{
ReportError(e);
}
}
#endregion
#region Private Methods
private void CheckDirectory()
{
if (!String.IsNullOrEmpty(path) && !Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
}
private void ReportError(Exception e)
{
if (ErrorCallback == null)
{
return;
}
// ReSharper disable once EmptyGeneralCatchClause
try
{
HostIOInterceptor.Instance.Paused = true;
ErrorCallback.Invoke(this, e);
}
catch { }
finally
{
HostIOInterceptor.Instance.Paused = false;
}
}
#endregion
}
}
// ReSharper restore MemberCanBePrivate.Global
// ReSharper restore UnusedMember.Global