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| ///////////////////////////////////////////////////////////////////////////
// //
// Copyright (c) 2015 by Charta Software B.V. //
// All rights reserved //
// //
// Version: 1.7.0.83525 //
// Web site: https://pascal.chartasoftware.com/ //
// //
// This code and information are provided "as is" without warranty of //
// any kind. Dissemination of this information or reproduction of //
// this material is strictly forbidden unless prior written permission //
// is obtained from Charta Software B.V.. //
// //
///////////////////////////////////////////////////////////////////////////
unit Internet.MediaType;
interface
uses
Dictionary,
Object_.ReferenceCounted,
Text;
type
TMediaType = class(TReferenceCountedObject)
protected
function TypeToText(): TText; virtual; abstract;
function SubtypeToText(): TText; virtual; abstract;
public
Parameters: TDictionary;
constructor Create(); override;
destructor Destroy(); override;
function ToText(): TText; override;
procedure ParseParameter(const Name: TText; const Value: TText); virtual;
function TypeSubtypeToText(): TText;
public
class function FromText(Value: TText): TMediaType;
class function FromExtension(Value: TText): TMediaType;
end;
implementation
uses
Internet.MediaType.Application,
Internet.MediaType.Application.NonStandard,
Internet.MediaType.Executable,
Internet.MediaType.Image,
Internet.MediaType.Image.NonStandard,
Internet.MediaType.Map,
Internet.MediaType.Multipart,
Internet.MediaType.Text,
Text.Collation;
{ TMediaType }
function TMediaType.ToText(): TText;
begin
Result := TypeSubtypeToText();
end;
function TMediaType.TypeSubtypeToText(): TText;
begin
Result := TypeToText() + '/' + SubtypeToText();
end;
constructor TMediaType.Create();
begin
inherited Create();
Self.Parameters := TDictionary.Create();
end;
destructor TMediaType.Destroy();
begin
Parameters.Free();
inherited Destroy();
end;
class function TMediaType.FromExtension(Value: TText): TMediaType;
begin
// TODO: We should be able to recognize a lot more extensions
if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'css') then
Result := TMediaTypeTextCss.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'js') then
Result := TMediaTypeTextJavascript.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'json') then
Result := TMediaTypeApplicationJson.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'png') then
Result := TMediaTypeImagePng.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'gif') then
Result := TMediaTypeImageGif.Create()
else if
TTextCollation.DefaultCaseInsensitive.Equal(Value, 'jpg')
or TTextCollation.DefaultCaseInsensitive.Equal(Value, 'jpeg')
or TTextCollation.DefaultCaseInsensitive.Equal(Value, 'jpe')
or TTextCollation.DefaultCaseInsensitive.Equal(Value, 'jfif')
or TTextCollation.DefaultCaseInsensitive.Equal(Value, 'jfi')
or TTextCollation.DefaultCaseInsensitive.Equal(Value, 'jif')
then
Result := TMediaTypeImageJpeg.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'bmp') or TTextCollation.DefaultCaseInsensitive.Equal(Value, 'dib') then
Result := TMediaTypeImageBmp.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'svg') then
Result := TMediaTypeImageSvg_Xml.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'pdf') then
Result := TMediaTypeApplicationPdf.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'zip') then
Result := TMediaTypeApplicationZip.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'doc') then
Result := TMediaTypeApplicationMsword.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'odt') then
Result := TMediaTypeApplicationOpenDocumentText.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'dbf') then
Result := TMediaTypeApplicationDbf.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'nc') then
Result := TMediaTypeApplicationNetCdf.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'ah1') then
Result := TMediaTypeApplicationAh1.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'shp') then
Result := TMediaTypeMapShapeFile.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'osm') then
Result := TMediaTypeMapOsm_Xml.Create()
else if TTextCollation.DefaultCaseInsensitive.Equal(Value, 'log') then
Result := TMediaTypeApplicationSyslog.Create()
else
Result := TMediaTypeApplicationOctetStream.Create();
end;
class function TMediaType.FromText(Value: TText): TMediaType;
var
TypeSubtype: TText;
Parameter: TText;
Name: TText;
begin
// TODO: We should assess what to do with semi colons
TypeSubtype := Value.Parse(';');
if TypeSubtype = '' then
Result := nil
else if TypeSubtype = 'executable/pe-coff' then
Result := TMediaTypeExecutablePeCoff.Create()
else if TypeSubtype = 'executable/lib' then
Result := TMediaTypeExecutableLib.Create()
else if TypeSubtype = 'executable/elf' then
Result := TMediaTypeExecutableElf.Create()
else if TypeSubtype = 'map/shapefile' then
Result := TMediaTypeMapShapeFile.Create()
else if TypeSubtype = 'map/osm+xml' then
Result := TMediaTypeMapOsm_Xml.Create()
else if TypeSubtype = 'text/html' then
Result := TMediaTypeTextHtml.Create()
else if TypeSubtype = 'text/csv' then
Result := TMediaTypeTextCsv.Create()
else if TypeSubtype = 'text/css' then
Result := TMediaTypeTextCss.Create()
else if TypeSubtype = 'text/plain' then
Result := TMediaTypeTextPlain.Create()
else if TypeSubtype = 'text/xml' then
Result := TMediaTypeTextXml.Create()
else if TypeSubtype = 'text/javascript' then
Result := TMediaTypeTextJavascript.Create()
else if TypeSubtype = 'image/bmp' then
Result := TMediaTypeImageBmp.Create()
else if TypeSubtype = 'image/png' then
Result := TMediaTypeImagePng.Create()
else if TypeSubtype = 'image/jpeg' then
Result := TMediaTypeImageJpeg.Create()
else if TypeSubtype = 'image/gif' then
Result := TMediaTypeImageGif.Create()
else if TypeSubtype = 'image/svg+xml' then
Result := TMediaTypeImageSvg_Xml.Create()
else if TypeSubtype = 'image/x-icon' then
Result := TMediaTypeImageXIcon.Create()
else if TypeSubtype = 'application/dbf' then
Result := TMediaTypeApplicationDbf.Create()
else if TypeSubtype = 'application/netcdf' then
Result := TMediaTypeApplicationNetCdf.Create()
else if TypeSubtype = 'application/octet-stream' then
Result := TMediaTypeApplicationOctetStream.Create()
else if TypeSubtype = 'application/javascript' then
Result := TMediaTypeApplicationJavascript.Create()
else if TypeSubtype = 'application/json' then
Result := TMediaTypeApplicationJson.Create()
else if TypeSubtype = 'application/pascal' then
Result := TMediaTypeApplicationPascal.Create()
else if TypeSubtype = 'application/pdf' then
Result := TMediaTypeApplicationPdf.Create()
else if TypeSubtype = 'application/soap+xml' then
Result := TMediaTypeApplicationSoapXml.Create()
else if TypeSubtype = 'application/rss+xml' then
Result := TMediaTypeApplicationRssXml.Create()
else if TypeSubtype = 'application/mysql' then
Result := TMediaTypeApplicationMysql.Create()
else if TypeSubtype = 'application/xml' then
Result := TMediaTypeApplicationXml.Create()
else if TypeSubtype = 'application/syslog' then
Result := TMediaTypeApplicationSyslog.Create()
else if TypeSubtype = 'application/x-mplayer2' then
Result := TMediaTypeApplicationXMPlayer2.Create()
else if TypeSubtype = 'application/x-oleobject' then
Result := TMediaTypeApplicationXOleObject.Create()
else if TypeSubtype = 'application/x-shockwave-flash' then
Result := TMediaTypeApplicationXShockwaveFlash.Create()
else if TypeSubtype = 'application/x-www-form-urlencoded' then
Result := TMediaTypeApplicationXWWWFormURLEncoded.Create()
else if TypeSubtype = 'application/zip' then
Result := TMediaTypeApplicationZip.Create()
else if TypeSubtype = 'application/msword' then
Result := TMediaTypeApplicationMsword.Create()
else if TypeSubtype = 'multipart/alternative' then
Result := TMediaTypeMultipartAlternative.Create()
else if TypeSubtype = 'multipart/form-data' then
Result := TMediaTypeMultipartFormData.Create()
else if TypeSubtype = 'multipart/mixed' then
Result := TMediaTypeMultipartMixed.Create()
else
Result := nil;
if Result <> nil then
begin
while Value <> '' do
begin
Parameter := Value.Parse(';');
Parameter := Parameter.Trim();
Name := Parameter.Parse('=');
Result.ParseParameter(Name, Parameter);
end;
end;
end;
procedure TMediaType.ParseParameter(const Name: TText; const Value: TText);
begin
Parameters.Add(Name, Value);
end;
end.
|