/// <summary>
/// Constructs the XML output pipe.
/// </summary>
/// <param name="outputPipe">The target output pipe which to write to.</param>
/// <param name="format">The <see cref="CsvOutputFormat"/> which to use.</param>
public CsvOutputPipe(IOutputPipe outputPipe, CsvOutputFormat format)
{
// validate arguments
if (outputPipe == null)
throw new ArgumentNullException("outputPipe");
if (format == null)
throw new ArgumentNullException("format");
// set values
this.outputPipe = outputPipe;
this.format = format;
// write the document start delimitor when available
if (format.HasDocumentStartDelimitor)
outputPipe.Writer.Write(format.DocumentStartDelimitor);
// write the column headers when needed
if (format.IncludeColumnHeaders)
Write(format.ColumnHeaders);
}
/// <summary>
/// </summary>
/// <param name="context"></param>
protected override void DoExecute(IMansionContext context)
{
// check if a default format is used or a custom one is specified
var formatName = GetAttribute<string>(context, "format");
CsvOutputFormat format;
if (!string.IsNullOrEmpty(formatName))
{
// get the format
format = CsvOutputFormat.GetFormat(formatName);
}
else
{
// create a custom format
format = new CsvOutputFormat
{
ColumnDelimitor = GetAttribute<string>(context, "columnDelimitor"),
ColumnProperties = GetAttribute<string>(context, "columnProperties").Split(new[] {','}, StringSplitOptions.RemoveEmptyEntries),
ColumnHeaders = GetAttribute(context, "columnHeaders", GetAttribute<string>(context, "columnProperties")).Split(new[] {','}),
DocumentEndDelimitor = GetAttribute<string>(context, "documentEndDelimitor"),
DocumentStartDelimitor = GetAttribute<string>(context, "documentStartDelimitor"),
IncludeColumnHeaders = GetAttribute<bool>(context, "includeColumnHeaders"),
RowDelimitor = GetAttribute<string>(context, "rowDelimitor"),
TextQualifier = GetAttribute<string>(context, "textQualifier")
};
}
// check if the format is sane
if (format.ColumnProperties.Length != format.ColumnHeaders.Length)
throw new InvalidOperationException("Unbalanced header with properties");
// create the XML pipe and push it to the stack
using (var pipe = new CsvOutputPipe(context.OutputPipe, format))
using (context.OutputPipeStack.Push(pipe))
{
// execute the children
ExecuteChildTags(context);
}
}
