ProcessWatchImpl/Croissant/MessageFormatter.cs

using System;
using SeedCreate.CommonLibrary;

namespace Toast
{
        public class MessageFormatter
        {
                private static readonly Pair<string, string> UriConvert = new Pair<string, string>("@url", "{0}");
                private static readonly Pair<string, string> TitleConvert = new Pair<string, string>("@title", "{1}");

                private string formatString;
                private string rawFormatString;


                public MessageFormatter(string formatString)
                {
                        if (formatString == null)
                        {
                                throw new ArgumentNullException("formatString");
                        }

                        FormatString = formatString;

                }

                public string FormatString
                {
                        get
                        {
                                return formatString;
                        }
                        set
                        {
                                if (value == null)
                                {
                                        throw new ArgumentNullException("FormatString");
                                }

                                formatString = value;

                                rawFormatString = formatString.Replace(UriConvert.ValueT, UriConvert.ValueU);
                                rawFormatString = rawFormatString.Replace(TitleConvert.ValueT, TitleConvert.ValueU);
                        }
                }


                public string BuildMessage(string uri, string title)
                {
                        if(uri==null)
                        {
                                throw new ArgumentNullException("uri");
                        }

                        if (title == null)
                        {
                                throw new ArgumentNullException("title");
                        }


                        return string.Format(rawFormatString, uri, title);
                }

                public string BuildMessage(LiveProgram Source)
                {
                        try
                        {
                                return BuildMessage(Source.ProgramUrl, Source.Title);
                        }
                        catch (NullReferenceException)
                        {
                                throw new ArgumentNullException("Source");
                        }
                }


        }
}