private void Parse(MemoryStream stream, Encoding encoding)
{
this.Success = false;
// Read the stream into a byte array
byte[] data = Misc.ToByteArray(stream);
// Copy to a string for header parsing
string content = encoding.GetString(data);
// The first line should contain the delimiter
int delimiterEndIndex = content.IndexOf("\r\n");
if (delimiterEndIndex > -1)
{
string delimiter = content.Substring(0, content.IndexOf("\r\n"));
string[] sections = content.Split(new string[] { delimiter }, StringSplitOptions.RemoveEmptyEntries);
foreach (string s in sections)
{
if (s.Contains("Content-Disposition"))
{
// If we find "Content-Disposition", this is a valid multi-part section
// Now, look for the "name" parameter
Match nameMatch = new Regex(@"(?<=name\=\"")(.*?)(?=\"")").Match(s);
string name = nameMatch.Value.Trim().ToLower();
if (name == FilePartName)
{
// Look for Content-Type
Regex re = new Regex(@"(?<=Content\-Type:)(.*?)(?=\r\n\r\n)");
Match contentTypeMatch = re.Match(content);
// Look for filename
re = new Regex(@"(?<=filename\=\"")(.*?)(?=\"")");
Match filenameMatch = re.Match(content);
// Did we find the required values?
if (contentTypeMatch.Success && filenameMatch.Success)
{
// Set properties
this.ContentType = contentTypeMatch.Value.Trim();
this.Filename = filenameMatch.Value.Trim();
// Get the start & end indexes of the file contents
int startIndex = contentTypeMatch.Index + contentTypeMatch.Length + "\r\n\r\n".Length;
byte[] delimiterBytes = encoding.GetBytes("\r\n" + delimiter);
int endIndex = Misc.IndexOf(data, delimiterBytes, startIndex);
int contentLength = endIndex - startIndex;
// Extract the file contents from the byte array
byte[] fileData = new byte[contentLength];
Buffer.BlockCopy(data, startIndex, fileData, 0, contentLength);
this.FileContents = fileData;
}
}
else if (!string.IsNullOrWhiteSpace(name))
{
// Get the start & end indexes of the file contents
int startIndex = nameMatch.Index + nameMatch.Length + "\r\n\r\n".Length;
Parameters.Add(name, s.Substring(startIndex).TrimEnd(new char[] { '\r', '\n' }).Trim());
}
}
}
// If some data has been successfully received, set success to true
if (FileContents != null || Parameters.Count != 0)
{
this.Success = true;
}
}
}