//
// Copyright (c) 2004,2005 Jaroslaw Kowalski <jkowalski@users.sourceforge.net>
//
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// * Neither the name of the Jaroslaw Kowalski nor the names of its
// contributors may be used to endorse or promote products derived from this
// software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
//
using System;
using System.Text;
namespace NLog.LayoutRenderers
{
/// <summary>
/// The formatted log message.
/// </summary>
[LayoutRenderer("message")]
public class MessageLayoutRenderer: LayoutRenderer
{
/// <summary>
/// Returns the estimated number of characters that are needed to
/// hold the rendered value for the specified logging event.
/// </summary>
/// <param name="ev">Logging event information.</param>
/// <returns>The number of characters.</returns>
/// <remarks>
/// If the exact number is not known or
/// expensive to calculate this function should return a rough estimate
/// that's big enough in most cases, but not too big, in order to conserve memory.
/// </remarks>
protected internal override int GetEstimatedBufferSize(LogEventInfo ev)
{
return ev.Message.Length;
}
/// <summary>
/// Renders the log message including any positional parameters and appends it to the specified <see cref="StringBuilder" />.
/// </summary>
/// <param name="builder">The <see cref="StringBuilder"/> to append the rendered data to.</param>
/// <param name="ev">Logging event.</param>
protected internal override void Append(StringBuilder builder, LogEventInfo ev)
{
if (NeedPadding())
{
if (ev.Parameters == null || ev.Parameters.Length == 0)
{
builder.Append(ApplyPadding(ev.Message));
}
else
{
if (ev.FormatProvider != null)
{
builder.Append(ApplyPadding(String.Format(ev.FormatProvider, ev.Message, ev.Parameters)));
}
else
{
builder.Append(ApplyPadding(String.Format(ev.Message, ev.Parameters)));
}
};
}
else
{
if (ev.Parameters == null || ev.Parameters.Length == 0)
{
builder.Append(ev.Message);
}
else
{
if (ev.FormatProvider != null)
{
#if NETCF
builder.Append(String.Format(ev.FormatProvider, ev.Message, ev.Parameters));
#else
builder.AppendFormat(ev.FormatProvider, ev.Message, ev.Parameters);
#endif
}
else
{
#if NETCF
builder.Append(String.Format(ev.Message, ev.Parameters));
#else
builder.AppendFormat(ev.Message, ev.Parameters);
#endif
}
};
}
}
}
}