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------------------------------------------------------------------------------
--                              Ada Web Server                              --
--                                                                          --
--                     Copyright (C) 2000-2012, AdaCore                     --
--                                                                          --
--  This library is free software;  you can redistribute it and/or modify   --
--  it under terms of the  GNU General Public License  as published by the  --
--  Free Software  Foundation;  either version 3,  or (at your  option) any --
--  later version. This library is distributed in the hope that it will be  --
--  useful, but WITHOUT ANY WARRANTY;  without even the implied warranty of --
--  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.                    --
--                                                                          --
--                                                                          --
--                                                                          --
--                                                                          --
--                                                                          --
--  You should have received a copy of the GNU General Public License and   --
--  a copy of the GCC Runtime Library Exception along with this program;    --
--  see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see   --
--  <http://www.gnu.org/licenses/>.                                         --
--                                                                          --
--                                                                          --
--                                                                          --
--                                                                          --
--                                                                          --
--                                                                          --
--                                                                          --
------------------------------------------------------------------------------

package AWS.MIME is

   --  Some content type constants. All of them will be defined into this
   --  package and associated with the right extensions. It is possible to
   --  add new MIME types with the routines below or by placing a file named
   --  aws.mime into the startup directory.
   --
   --  A MIME type is written in two parts: type/format

   ----------
   -- Text --
   ----------

   Text_CSS                    : constant String := "text/css";
   Text_Javascript             : constant String := "text/javascript";
   Text_HTML                   : constant String := "text/html";
   Text_Plain                  : constant String := "text/plain";
   Text_XML                    : constant String := "text/xml";
   Text_X_SGML                 : constant String := "text/x-sgml";

   -----------
   -- Image --
   -----------

   Image_Gif                   : constant String := "image/gif";
   Image_Jpeg                  : constant String := "image/jpeg";
   Image_Png                   : constant String := "image/png";
   Image_Tiff                  : constant String := "image/tiff";
   Image_Icon                  : constant String := "image/x-icon";
   Image_X_Portable_Anymap     : constant String := "image/x-portable-anymap";
   Image_X_Portable_Bitmap     : constant String := "image/x-portable-bitmap";
   Image_X_Portable_Graymap    : constant String := "image/x-portable-graymap";
   Image_X_Portable_Pixmap     : constant String := "image/x-portable-pixmap";
   Image_X_RGB                 : constant String := "image/x-rgb";
   Image_X_Xbitmap             : constant String := "image/x-xbitmap";
   Image_X_Xpixmap             : constant String := "image/x-xpixmap";
   Image_X_Xwindowdump         : constant String := "image/x-xwindowdump";

   -----------------
   -- Application --
   -----------------

   Application_Postscript      : constant String := "application/postscript";
   Application_Pdf             : constant String := "application/pdf";
   Application_Zip             : constant String := "application/zip";
   Application_Octet_Stream    : constant String := "application/octet-stream";
   Application_Form_Data       : constant String
     := "application/x-www-form-urlencoded";
   Application_Mac_Binhex40    : constant String := "application/mac-binhex40";
   Application_Msword          : constant String := "application/msword";
   Application_Powerpoint      : constant String := "application/powerpoint";
   Application_Rtf             : constant String := "application/rtf";
   Application_XML             : constant String := "application/xml";
   Application_X_Compress      : constant String := "application/x-compress";
   Application_X_GTar          : constant String := "application/x-gtar";
   Application_X_GZip          : constant String := "application/x-gzip";
   Application_X_Latex         : constant String := "application/x-latex";
   Application_X_Sh            : constant String := "application/x-sh";
   Application_X_Shar          : constant String := "application/x-shar";
   Application_X_Tar           : constant String := "application/x-tar";
   Application_X_Tcl           : constant String := "application/x-tcl";
   Application_X_Tex           : constant String := "application/x-tex";
   Application_X_Texinfo       : constant String := "application/x-texinfo";
   Application_X_Troff         : constant String := "application/x-troff";
   Application_X_Troff_Man     : constant String := "application/x-troff-man";

   -----------
   -- Audio --
   -----------

   Audio_Basic                 : constant String := "audio/basic";
   Audio_Mpeg                  : constant String := "audio/mpeg";
   Audio_X_Wav                 : constant String := "audio/x-wav";
   Audio_X_Pn_Realaudio        : constant String := "audio/x-pn-realaudio";
   Audio_X_Pn_Realaudio_Plugin : constant String
     := "audio/x-pn-realaudio-plugin";
   Audio_X_Realaudio           : constant String := "audio/x-realaudio";

   -----------
   -- Video --
   -----------

   Video_Mpeg                  : constant String := "video/mpeg";
   Video_Quicktime             : constant String := "video/quicktime";
   Video_X_Msvideo             : constant String := "video/x-msvideo";

   ---------------
   -- Multipart --
   ---------------

   Multipart_Form_Data         : constant String := "multipart/form-data";
   Multipart_Byteranges        : constant String := "multipart/byteranges";
   Multipart_Related           : constant String := "multipart/related";
   Multipart_X_Mixed_Replace   : constant String
     := "multipart/x-mixed-replace";

   -------------
   -- Setting --
   -------------

   procedure Add_Extension (Ext : String; MIME_Type : String);
   --  Add extension Ext (file extension without the dot, e.g. "txt") to the
   --  set of MIME type extension handled by this API. Ext will be mapped to
   --  the MIME_Type string.

   procedure Add_Regexp (Filename : String; MIME_Type : String);
   --  Add a specific rule to the MIME type table. Filename is a regular
   --  expression and will be mapped to the MIME_Type string.

   ---------------
   -- MIME Type --
   ---------------

   function Content_Type
      (Filename : String;
       Default  : String := Application_Octet_Stream) return String;
   --  Returns the MIME Content Type based on filename's extension or if not
   --  found the MIME Content type where Filename matches one of the specific
   --  rules set by Add_Regexp (see below).
   --  Returns Default if the file type is unknown (i.e. no extension and
   --  no regular expression match filename).

   function Extension (Content_Type : String) return String;
   --  Returns the best guess of the extension to use for the Content Type.
   --  Note that extensions added indirectly by Add_Regexp are not searched.

   function Is_Text (MIME_Type : String) return Boolean;
   --  Returns True if the MIME_Type is a text data

   function Is_Audio (MIME_Type : String) return Boolean;
   --  Returns True if the MIME_Type is an audio data

   function Is_Image (MIME_Type : String) return Boolean;
   --  Returns True if the MIME_Type is an image data

   function Is_Video (MIME_Type : String) return Boolean;
   --  Returns True if the MIME_Type is a video data

   function Is_Application (MIME_Type : String) return Boolean;
   --  Returns True if the MIME_Type is an application data

   procedure Load (MIME_File : String);
   --  Load MIME_File, record every MIME type. Note that the format of this
   --  file follows the common standard format used by Apache mime.types.

end AWS.MIME;