/// <summary>
/// Construct a Document instance
/// </summary>
/// <remarks>
/// In future, rather than being hardcoded switch statement, this method could
/// use a 'provider' model where MIME-types and/or extensions are defined
/// in the .config file, along with the assembly/class to use to process
/// that type...
/// </remarks>
public static Document New(Uri uri, System.Net.HttpWebResponse contentType)
{
Document newDoc = new IgnoreDocument(uri);
string mimeType = ParseMimeType(contentType.ContentType.ToString()).ToLower();
string encoding = ParseEncoding(contentType.ToString()).ToLower();
string extension = ParseExtension(uri.AbsoluteUri);
switch (mimeType)
{
case "text/css":
break;
case "application/x-msdownload":
break;
case "application/octet-stream": // ZIP file or something unknown... give some a try
switch (extension)
{
case ".docx":
newDoc = new DocxDocument(uri);
break;
case ".xlsx":
newDoc = new XlsxDocument(uri);
break;
case ".pptx":
newDoc = new PptxDocument(uri);
break;
}
break;
// docx
case "application/vnd.ms-word.document.12":
case "application/vnd.openxmlformats-officedocument.wordprocessingml":
case "application/vnd.openxmlformats-officedocument.wordprocessingml.document":
newDoc = new DocxDocument(uri);
break;
// pptx
case "application/vnd.openxmlformats-officedocument.presentationml":
case "application/vnd.openxmlformats-officedocument.presentationml.presentation":
newDoc = new PptxDocument(uri);
break;
// xlsx
case "application/vnd.openxmlformats-officedocument.spreadsheetml":
case "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet":
newDoc = new XlsxDocument(uri);
break;
case "application/vnd.ms-powerpoint": // ppt
case "application/pdf": // pdf
case "application/msword": // xls
newDoc = new FilterDocument(uri);
break;
case "text/plain":
newDoc = new TextDocument(uri);
break;
case "text/xml":
case "application/xml":
newDoc = new HtmlDocument(uri); // TODO: XmlDocument parser
break;
case "application/rss+xml":
case "application/rdf+xml":
case "application/atom+xml":
newDoc = new HtmlDocument(uri); // TODO: RssDocument parser
break;
case "application/xhtml+xml":
newDoc = new HtmlDocument(uri); // TODO: XhtmlDocument parser
break;
case "text/html":
default:
// none of the above matched...
if (mimeType.IndexOf("html") >= 0)
{ // If we got 'text' data (not images)
newDoc = new HtmlDocument(uri);
}
else if (mimeType.IndexOf("text") >= 0)
{ // If we got 'text' data (not images)
newDoc = new TextDocument(uri);
}
break;
} // switch
newDoc.MimeType = mimeType;
return(newDoc);
}