jaypha.inet.mime.contenttype source code

1 //Written in the D programming language
2 /*
3  * MIME Content-Type header.
4  *
5  * Copyright: Copyright (C) 2013 Jaypha
6  *
7  * Distributed under the Boost Software License, Version 1.0.
8  * (See http://www.boost.org/LICENSE_1_0.txt)
9  *
10  * Authors: Jason den Dulk
11  */
12 
13 /*
14  * RFCs : 2045
15  */
16 
17 module jaypha.inet.mime.contenttype;
18 
19 import jaypha.inet.mime.reading;
20 import jaypha.inet.imf.writing;
21 
22 import std.array;
23 
24 //-----------------------------------------------------------------------------
25 // Content Type info
26 
27 struct MimeContentType
28 {
29   enum headerName = "Content-Type";
30 
31   string mimeType = "text/plain";
32   string[string] parameters;
33 }
34 
35 //----------------------------------------------------------------------------
36 // extracts the content of a Content-Type MIME header.
37 
38 MimeContentType extractMimeContentType(string fieldBody)
39 {
40   MimeContentType ct;
41 
42   skipSpaceComment(fieldBody);
43   auto type = extractToken(fieldBody);
44   skipSpaceComment(fieldBody);
45   if (fieldBody.cfront != '/') throw new Exception("malformed MIME header");
46   fieldBody.popFront();
47   skipSpaceComment(fieldBody);
48   auto subType = extractToken(fieldBody); // TODO, the delimiter in this case is whitespace.
49   ct.mimeType = type~"/"~subType;
50   extractMimeParams(fieldBody,ct.parameters);
51   return ct;
52 }
53 
54 //----------------------------------------------------------------------------
55 
56 MimeHeader toMimeHeader(ref MimeContentType contentType, bool asImf = false)
57 {
58   auto a = appender!string;
59   a.put(contentType.mimeType);
60   foreach (i,v; contentType.parameters)
61     a.put("; "~i~"=\""~v~"\"");
62 
63   if (asImf)
64     return unstructuredHeader(MimeContentType.headerName,a.data);
65   else
66     return MimeHeader(MimeContentType.headerName,a.data);
67 }
68 
69 //----------------------------------------------------------------------------