protected virtual void CheckFileSize(SitemapInfo info, string path)
{
if (new FileInfo(path).Length > SitemapInfo.MAX_FILE_SIZE)
{
throw new ArgumentOutOfRangeException("info", string.Format("size of a sitemap file greater than {0}.", SitemapInfo.MAX_FILE_SIZE));
}
}
/// <inheritdoc />
public virtual void Serialize(SitemapInfo info, string path)
{
this.CheckArguments(info, path);
XmlSerializer serializer = new XmlSerializer(typeof(SitemapInfo));
XmlSerializerNamespaces namespaces = new XmlSerializerNamespaces();
namespaces.Add(string.Empty, "http://www.sitemaps.org/schemas/sitemap/0.9");
using (TextWriter writer = new StreamWriter(path, false, Encoding.UTF8)) {
serializer.Serialize(writer, info, namespaces);
}
this.CheckFileSize(info, path);
}
protected virtual void CheckArguments(SitemapInfo info, string path)
{
if (info == null)
{
throw new ArgumentNullException("info");
}
if (string.IsNullOrWhiteSpace(path))
{
throw new ArgumentException("path is null or empty.", "path");
}
if (info.Items.Count > SitemapInfo.MAX_ITEMS_COUNT)
{
throw new ArgumentOutOfRangeException("info", string.Format("number of items in a sitemap file greater than {0}.", SitemapInfo.MAX_ITEMS_COUNT));
}
FileUtility.CreateFolder(path);
}
/// <inheritdoc />
public override void Serialize(SitemapInfo info, string path)
{
this.CheckArguments(info, path);
using (XmlWriter writer = XmlWriter.Create(path, new XmlWriterSettings {
Encoding = Encoding.UTF8,
Indent = true,
CloseOutput = true,
})) {
writer.WriteStartDocument();
writer.WriteStartElement("urlset", "http://www.sitemaps.org/schemas/sitemap/0.9");
writer.WriteAttributeString("xmlns", "mobile", null, "http://www.baidu.com/schemas/sitemap-mobile/1/");
foreach (SitemapItemInfo item in info.Items)
{
writer.WriteStartElement("url");
if (item.Location != null)
{
writer.WriteElementString("loc", item.Location);
}
if (item.ItemType.HasValue)
{
string value = null;
switch (item.ItemType.Value)
{
case SitemapItemType.Mobile:
value = "mobile";
break;
case SitemapItemType.AutoAdaptive:
value = "pc,mobile";
break;
case SitemapItemType.HtmlAdaptive:
value = "htmladapt";
break;
}
if (value != null)
{
writer.WriteStartElement("mobile", "mobile", "http://www.baidu.com/schemas/sitemap-mobile/1/");
writer.WriteAttributeString("type", value);
writer.WriteEndElement();
}
}
if (item.LastModifyTime.HasValue)
{
writer.WriteElementString("lastmod", item.LastModifyTime.Value.ToString("yyyy-MM-dd"));
}
if (item.ChangeFrequency.HasValue)
{
string value = null;
switch (item.ChangeFrequency.Value)
{
case SitemapItemChangeFrequency.Never:
value = "never";
break;
case SitemapItemChangeFrequency.Yearly:
value = "yearly";
break;
case SitemapItemChangeFrequency.Monthly:
value = "monthly";
break;
case SitemapItemChangeFrequency.Weekly:
value = "weekly";
break;
case SitemapItemChangeFrequency.Daily:
value = "daily";
break;
case SitemapItemChangeFrequency.Hourly:
value = "hourly";
break;
}
if (value != null)
{
writer.WriteElementString("changefreq", value);
}
}
if (item.Priority.HasValue)
{
writer.WriteElementString("priority", item.Priority.Value.ToString());
}
writer.WriteEndElement();
}
writer.WriteEndElement();
writer.WriteEndDocument();
}
this.CheckFileSize(info, path);
}
