protected void Application_Start(object sender, EventArgs e)
{
string feedsFileName = Path.Combine(Server.MapPath("./"), ConfigurationManager.AppSettings["FeedsFilePath"]);
//feedsをXMLファイルからリストア
FeedsDS.FeedsDTDataTable feedsDT = new FeedsDS.FeedsDTDataTable();
if (File.Exists(feedsFileName))
{
feedsDT.ReadXml(feedsFileName);
}
Application["feedsDT"] = feedsDT;
}
private void GridView1_Bind()
{
FeedsDS.FeedsDTDataTable feedsDT = this.Application["feedsDT"] as FeedsDS.FeedsDTDataTable;
this.GridView1.DataSource = feedsDT.Select("", "ResistDate Desc");
this.GridView1.DataBind();
}
protected void Page_Load(object sender, EventArgs e)
{
string decodedURL = HttpUtility.HtmlDecode(Request.QueryString["url"]);
string decodedFilterString = HttpUtility.HtmlDecode(Request.QueryString["q"]);
string[] filterStrings = decodedFilterString.Split(new char[] { ' ', '�@' }, StringSplitOptions.RemoveEmptyEntries);
bool checkDescription = Request.QueryString["Description"] != null;
bool checkTitle = true;
if (checkDescription)
{
checkTitle = Request.QueryString["title"] != null;
}
RssFeed feed;
try
{
feed = RssFeed.Read(decodedURL);
}
catch (Exception ex)
{
Response.ContentType = "text/plain";
Response.Write(ex.Message);
Response.End();
return;
}
if (feed.Channels.Count == 0)
{
Response.ContentType = "text/plain";
Response.Write("This feed has no channel.");
Response.End();
return;
}
//Feed��o�^
lock (Application["feedsDT"])
{
FeedsDS.FeedsDTDataTable feedsDT = Application["feedsDT"] as FeedsDS.FeedsDTDataTable;
FeedsDS.FeedsDTRow row = feedsDT.FindByFilterStringFeedURL(decodedFilterString, decodedURL);
if (null == row)
{
// insert
feedsDT.AddFeedsDTRow(decodedURL, decodedFilterString, checkTitle, checkDescription, Request.Url.AbsoluteUri, DateTime.Now);
}
else
{
//update
row.TargetTitle = checkTitle;
row.TargetDescription = checkDescription;
row.ResistDate = DateTime.Now;
}
WriteFeedXml(feedsDT);
}
//main from here
foreach (RssChannel channel in feed.Channels)
{
RssItemCollection newItems = new RssItemCollection();
foreach (RssItem item in channel.Items)
{
StringBuilder targetString = new StringBuilder();
if (checkTitle)
{
targetString.Append(item.Title);
}
if (checkDescription)
{
targetString.Append(item.Description);
}
if (!IsFilteredEntry(targetString.ToString(), filterStrings))
{
newItems.Add(item);
}
}
if (newItems.Count == 0)
{
Response.ContentType = "text/plain";
Response.Write("Channel must contain at least one item.");
Response.End();
return;
}
channel.Items.Clear();
foreach (RssItem item in newItems)
{
channel.Items.Add(item);
}
}
feed.Encoding = feed.Encoding ?? Encoding.UTF8;
Response.ContentType = "text/xml";
feed.Write(Response.OutputStream);
Response.End();
}
bool IsFilteredEntry(string targetString, string[] filterStrings)
{
string targetStringLow = targetString.ToLower();
foreach (string filterString in filterStrings)
{
string filterStringLow = filterString.ToLower();
if (filterStringLow.StartsWith("-"))
{
if (targetStringLow.Contains(filterStringLow.Substring(1)))
{
return(true);
}
}
else
{
if (!targetStringLow.Contains(filterStringLow))
{
return(true);
}
}
}
return(false);
}
void WriteFeedXml(FeedsDS.FeedsDTDataTable feedsDT)
{
string feedsFileName = Path.Combine(Server.MapPath("./"), ConfigurationManager.AppSettings["FeedsFilePath"]);
if (!File.Exists(feedsFileName))
{
Directory.CreateDirectory(Path.GetDirectoryName(feedsFileName));
}
feedsDT.WriteXml(feedsFileName);
}
} // end of class
