static bool TryParse(string text, ref int index, string path, out BodyPart part)
{
ContentDisposition disposition;
ContentType contentType;
string[] array;
string nstring;
Uri location;
uint number;
part = null;
while (index < text.Length && text[index] == ' ')
{
index++;
}
if (index >= text.Length || text[index] != '(')
{
if (index + 3 <= text.Length && text.Substring(index, 3) == "NIL")
{
index += 3;
return(true);
}
return(false);
}
index++;
if (index >= text.Length)
{
return(false);
}
if (text[index] == '(')
{
var prefix = path.Length > 0 ? path + "." : string.Empty;
var multipart = new BodyPartMultipart();
IList <BodyPart> children;
if (!TryParse(text, ref index, prefix, out children))
{
return(false);
}
foreach (var child in children)
{
multipart.BodyParts.Add(child);
}
if (!TryParse(text, ref index, true, out contentType))
{
return(false);
}
multipart.ContentType = contentType;
if (!TryParse(text, ref index, out disposition))
{
return(false);
}
multipart.ContentDisposition = disposition;
if (!TryParse(text, ref index, out array))
{
return(false);
}
multipart.ContentLanguage = array;
if (!TryParse(text, ref index, out location))
{
return(false);
}
multipart.ContentLocation = location;
part = multipart;
}
else
{
BodyPartMessage message = null;
BodyPartText txt = null;
BodyPartBasic basic;
if (!TryParse(text, ref index, false, out contentType))
{
return(false);
}
if (contentType.IsMimeType("message", "rfc822"))
{
basic = message = new BodyPartMessage();
}
else if (contentType.IsMimeType("text", "*"))
{
basic = txt = new BodyPartText();
}
else
{
basic = new BodyPartBasic();
}
basic.ContentType = contentType;
if (!TryParse(text, ref index, out nstring))
{
return(false);
}
basic.ContentId = nstring;
if (!TryParse(text, ref index, out nstring))
{
return(false);
}
basic.ContentDescription = nstring;
if (!TryParse(text, ref index, out nstring))
{
return(false);
}
basic.ContentTransferEncoding = nstring;
if (!TryParse(text, ref index, out number))
{
return(false);
}
basic.Octets = number;
if (!TryParse(text, ref index, out nstring))
{
return(false);
}
basic.ContentMd5 = nstring;
if (!TryParse(text, ref index, out disposition))
{
return(false);
}
basic.ContentDisposition = disposition;
if (!TryParse(text, ref index, out array))
{
return(false);
}
basic.ContentLanguage = array;
if (!TryParse(text, ref index, out location))
{
return(false);
}
basic.ContentLocation = location;
if (message != null)
{
Envelope envelope;
BodyPart body;
if (!Envelope.TryParse(text, ref index, out envelope))
{
return(false);
}
message.Envelope = envelope;
if (!TryParse(text, ref index, path, out body))
{
return(false);
}
message.Body = body;
if (!TryParse(text, ref index, out number))
{
return(false);
}
message.Lines = number;
}
else if (txt != null)
{
if (!TryParse(text, ref index, out number))
{
return(false);
}
txt.Lines = number;
}
part = basic;
}
part.PartSpecifier = path;
if (index >= text.Length || text[index] != ')')
{
return(false);
}
index++;
return(true);
}
static bool TryParse (string text, ref int index, string path, out BodyPart part)
{
ContentDisposition disposition;
ContentType contentType;
string[] array;
string nstring;
Uri location;
uint number;
part = null;
while (index < text.Length && text[index] == ' ')
index++;
if (index >= text.Length || text[index] != '(') {
if (index + 3 <= text.Length && text.Substring (index, 3) == "NIL") {
index += 3;
return true;
}
return false;
}
index++;
if (index >= text.Length)
return false;
if (text[index] == '(') {
var prefix = path.Length > 0 ? path + "." : string.Empty;
var multipart = new BodyPartMultipart ();
IList<BodyPart> children;
if (!TryParse (text, ref index, prefix, out children))
return false;
foreach (var child in children)
multipart.BodyParts.Add (child);
if (!TryParse (text, ref index, true, out contentType))
return false;
multipart.ContentType = contentType;
if (!TryParse (text, ref index, out disposition))
return false;
multipart.ContentDisposition = disposition;
if (!TryParse (text, ref index, out array))
return false;
multipart.ContentLanguage = array;
if (!TryParse (text, ref index, out location))
return false;
multipart.ContentLocation = location;
part = multipart;
} else {
BodyPartMessage message = null;
BodyPartText txt = null;
BodyPartBasic basic;
if (!TryParse (text, ref index, false, out contentType))
return false;
if (contentType.Matches ("message", "rfc822"))
basic = message = new BodyPartMessage ();
else if (contentType.Matches ("text", "*"))
basic = txt = new BodyPartText ();
else
basic = new BodyPartBasic ();
basic.ContentType = contentType;
if (!TryParse (text, ref index, out nstring))
return false;
basic.ContentId = nstring;
if (!TryParse (text, ref index, out nstring))
return false;
basic.ContentDescription = nstring;
if (!TryParse (text, ref index, out nstring))
return false;
basic.ContentTransferEncoding = nstring;
if (!TryParse (text, ref index, out number))
return false;
basic.Octets = number;
if (!TryParse (text, ref index, out nstring))
return false;
basic.ContentMd5 = nstring;
if (!TryParse (text, ref index, out disposition))
return false;
basic.ContentDisposition = disposition;
if (!TryParse (text, ref index, out array))
return false;
basic.ContentLanguage = array;
if (!TryParse (text, ref index, out location))
return false;
basic.ContentLocation = location;
if (message != null) {
Envelope envelope;
BodyPart body;
if (!Envelope.TryParse (text, ref index, out envelope))
return false;
message.Envelope = envelope;
if (!TryParse (text, ref index, path, out body))
return false;
message.Body = body;
if (!TryParse (text, ref index, out number))
return false;
message.Lines = number;
} else if (txt != null) {
if (!TryParse (text, ref index, out number))
return false;
txt.Lines = number;
}
part = basic;
}
part.PartSpecifier = path;
if (index >= text.Length || text[index] != ')')
return false;
index++;
return true;
}