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ServletResponse.d

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00001 /*******************************************************************************
00002 
00003         @file ServletResponse.d
00004         
00005         Copyright (C) 2004 Kris Bell
00006         
00007         This software is provided 'as-is', without any express or implied
00008         warranty. In no event will the authors be held liable for damages
00009         of any kind arising from the use of this software.
00010         
00011         Permission is hereby granted to anyone to use this software for any 
00012         purpose, including commercial applications, and to alter it and/or 
00013         redistribute it freely, subject to the following restrictions:
00014         
00015         1. The origin of this software must not be misrepresented; you must 
00016            not claim that you wrote the original software. If you use this 
00017            software in a product, an acknowledgment within documentation of 
00018            said product would be appreciated but is not required.
00019 
00020         2. Altered source versions must be plainly marked as such, and must 
00021            not be misrepresented as being the original software.
00022 
00023         3. This notice may not be removed or altered from any distribution
00024            of the source.
00025 
00026 
00027                         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
00028 
00029         
00030         @version        Initial version, April 2004      
00031         @author         Kris
00032 
00033 
00034 *******************************************************************************/
00035 
00036 module mango.servlet.ServletResponse;
00037 
00038 private import  mango.io.Uri,
00039                 mango.io.Buffer,
00040                 mango.io.Exception,
00041                 mango.io.FileConduit;
00042 
00043 private import  mango.io.model.IBuffer;
00044 
00045 private import  mango.servlet.ServletContext;
00046 
00047 private import  mango.servlet.model.IServletResponse;
00048 
00049 private import  mango.http.HttpWriter;
00050 
00051 private import  mango.http.server.HttpParams,
00052                 mango.http.server.HttpCookies,
00053                 mango.http.server.HttpHeaders,
00054                 mango.http.server.HttpResponse;
00055 
00056 private import  mango.http.server.model.IProviderBridge;
00057 
00058 /******************************************************************************
00059 
00060 ******************************************************************************/
00061 
00062 class ServletResponse : HttpResponse, IServletResponse
00063 {
00064         /**********************************************************************
00065 
00066         **********************************************************************/
00067 
00068         this (IProviderBridge bridge)
00069         {
00070                 // initialize the HttpRequest
00071                 super (bridge);
00072         }
00073 
00074         /**********************************************************************
00075 
00076         **********************************************************************/
00077 
00078         void reset ()
00079         {
00080                 // reset HttpRequest
00081                 super.reset();
00082         }
00083 
00084         /**********************************************************************
00085 
00086         **********************************************************************/
00087 
00088         HttpMutableParams getParameters ()
00089         {
00090                 return super.getOutputParams();
00091         }
00092 
00093         /**********************************************************************
00094 
00095         **********************************************************************/
00096 
00097         HttpMutableCookies getCookies ()
00098         {
00099                 return super.getOutputCookies();
00100         }
00101 
00102         /**********************************************************************
00103 
00104         **********************************************************************/
00105 
00106         HttpMutableHeaders getHeaders ()
00107         {
00108                 return super.getOutputHeaders();
00109         }
00110 
00111         /***********************************************************************
00112         
00113         ***********************************************************************/
00114 
00115         HttpWriter getWriter()
00116         {
00117                 return super.getWriter();
00118         }
00119 
00120         /***********************************************************************
00121         
00122         ***********************************************************************/
00123 
00124         void setContentLength (int len)
00125         {
00126                getHeader().addInt (HttpHeader.ContentLength, len);
00127         }
00128 
00129 
00130         /***********************************************************************
00131         
00132         ***********************************************************************/
00133 
00134         void setContentType (char[] type)
00135         {
00136                super.setContentType (type);
00137         }
00138 
00139         /***********************************************************************
00140         
00141         ***********************************************************************/
00142 
00143         void flushBuffer()
00144         {
00145                 super.flush (getWriter ());
00146         }
00147 
00148         /***********************************************************************
00149         
00150                 The argument 'status' should be "inout" instead so as to 
00151                 enforce pass-by-reference semantics. However, one cannot
00152                 do that with a const struct. D apparently still requires
00153                 further development in this area.
00154 
00155         ***********************************************************************/
00156 
00157         void sendError (inout HttpStatus status, char[] msg)
00158         {
00159                 super.sendError (status, msg);
00160         }
00161 
00162 
00163         /***********************************************************************
00164         
00165                 The argument 'status' should be "inout" instead so as to 
00166                 enforce pass-by-reference semantics. However, one cannot
00167                 do that with a const struct. D apparently still requires
00168                 further development in this area.
00169 
00170         ***********************************************************************/
00171 
00172         void sendError (inout HttpStatus status)
00173         {
00174                 super.sendError (status);
00175         }
00176 
00177 
00178         /***********************************************************************
00179         
00180         ***********************************************************************/
00181 
00182         void sendRedirect(char[] location)
00183         {
00184                 super.sendRedirect (location);
00185         }
00186 
00187         /***********************************************************************
00188         
00189                 The argument 'status' should be "inout" instead so as to 
00190                 enforce pass-by-reference semantics. However, one cannot
00191                 do that with a const struct. D apparently still requires
00192                 further development in this area.
00193 
00194         ***********************************************************************/
00195 
00196         void setStatus (inout HttpStatus status)
00197         {
00198                 super.setStatus (status);
00199         }
00200 
00201         /***********************************************************************
00202         
00203         ***********************************************************************/
00204 
00205         bool copyFile (ServletContext context, char[] path)
00206         {
00207                 FileConduit conduit;
00208 
00209                 try {
00210                     // does the file exist?
00211                     conduit = context.getResourceAsFile (path);
00212 
00213                     // set expected output size
00214                     setContentLength (conduit.length());
00215 
00216                     // set content-type if not already set
00217                     if (super.getContentType() is null)
00218                        {
00219                        char[] mime = context.getMimeType (conduit.getPath.getExtension());
00220                        if (mime is null)
00221                            mime = "text/plain";        
00222                        
00223                        super.setContentType (mime);
00224                        }
00225 
00226                     // copy file to output conduit
00227                     getWriter.getBuffer.getConduit.copy (conduit);
00228                     return true;
00229 
00230                     } catch (IOException x)
00231                             {
00232                             sendError (HttpResponses.NotFound);
00233                             }
00234                       finally 
00235                             {
00236                             if (conduit)
00237                                 conduit.close();
00238                             }
00239                 return false;
00240         }
00241 }
00242 
00243 

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