author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 26 Jan 2010 15:23:49 +0200 | |
changeset 0 | af10295192d8 |
child 6 | c64cefac6e99 |
permissions | -rw-r--r-- |
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// |
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// readme.txt - introduction to the CGI library |
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// |
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// Portions Copyright (c) Symbian Software Ltd. 2007. |
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// Portions Copyright (C) 1999-2004 Nokia. * Nokia Core OS * |
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// Save as expressly licensed to you by Symbian Software Ltd, all rights reserved. |
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// |
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//////////////////////////////////////////////////////////////// |
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// WS_CGI.DLL |
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// Deriving a DLL from CExecCGI |
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CExecCGI is an abstract class, inteded for derivation in a polymorphic interface DLL. This abstract class has some |
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static functions which are implemented in a static interface DLL. When the polymorphic interface DLL is loaded |
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any static interface DLL requiered by the polymorphic DLL are also loaded. So you do not have to worry about this. |
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Mainly, the CGI programmer has only to implement the pure virtual function ExecCGI(). The enviroment variables are |
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defined as a class (TCgiEnv). The command-line arguments are also implented as a class (CCommandArg). Their values are set by the |
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WebServer. |
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The communication with the webserver is done through two functions: Read and Write. |
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(*) TInt Read(TDes& aBuffer) |
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Note: This functions reads data from the WebServer. |
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Arguments |
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========= |
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TDes& aBuffer |
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------------- |
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Descriptor into which characters are read. Any existing contents are overwritten. |
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On return, its length is set to the number of characters read. The length is set to zero when there are no more |
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characters to be read. |
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Return |
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====== |
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TInt |
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---- |
af10295192d8
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An error code. |
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(*) TInt Write(TDesC& aBuffer) |
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Note: This functions sends data to the webserver. |
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Arguments |
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========= |
af10295192d8
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Descriptor from which characters are written. |
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Return |
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====== |
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TInt |
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---- |
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An error code. |