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Wed Jan 24 20:12:02 1996 UTC (28 years, 4 months ago) by frystyk
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CVS tags: v4/0D, autoconf, HEAD
merge between main branch and 4.0 branch

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<TITLE>Initialization Routines</TITLE>
<!-- Changed by: Henrik Frystyk Nielsen, 22-Jan-1996 -->
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<H1>Initialization Module</H1>

<PRE>
/*
**	(c) COPYRIGHT MIT 1995.
**	Please first read the full copyright statement in the file COPYRIGH.
*/
</PRE>

This module resisters all the plug &amp; play software modules which
will be used in the program on client side (The server has it's own
initialization module). None of the functions in this module are
called from the Library. They are uniquely a help for the application
programmer in order to set up the functionality of the Library. <P>

The initialization consists of definiting the following bindings:

<UL>
<LI>Between a source media type and a dest media type (conversion)
<LI>Between media types and external viewers/presenters
<LI>Between an access method and a protocol module
</UL>

This module is implemented by <A HREF="HTInit.c">HTInit.c</A>, and it
is a part of the <A HREF="http://www.w3.org/pub/WWW/Library/"> W3C
Reference Library</A>. <P>

<IMG SRC="../../Icons/32x32/warning.gif"> <B>THE APPLICATION MAY USE
THESE FUNCTIONS BUT IT IS NOT REQUIRED</B> <P>

<IMG SRC="../../Icons/32x32/warning.gif"> <B>PLEASE SEE THE <A
HREF="HTBInit.html">HTBInit MODULE</A> FOR STANDARD BINDINGS BETWEEN
FILE EXTENSIONS AND MEDIA TYPES.</B>

<PRE>
#ifndef HTINIT_H
#define HTINIT_H
#include "WWWLib.h"
</PRE>

<H2>Media Type Conversions</H2>

The <EM>Converters</EM> are used to convert a media type to another
media type, or to present it on screen. This is a part of the stream
stack algorithm. The Presenters are also used in the stream stack, but
are initialized separately.

<PRE>
#include "HTML.h"			/* Uses HTML/HText interface */
#include "HTPlain.h"			/* Uses HTML/HText interface */

#include "HTTeXGen.h"
#include "HTMLGen.h"
#include "HTMIME.h"
#include "HTBound.h"
#include "HTGuess.h"
#include "HTRules.h"
#include "HTWSRC.h"
#include "HTFWrite.h"
#include "HTNewsLs.h"

extern void HTConverterInit	(HTList * conversions);
</PRE>

<H2>Presenters</H2>

The <EM>Presenters</EM> are used to present a media type to the use by
calling an external program, for example a post script viewer. This is
a part of the stream stack algorithm. The Converters are also used in
the stream stack, but are initialized separately.

<PRE>
extern void HTPresenterInit	(HTList * conversions);
</PRE>

<H2>Converters and Presenters</H2>

This function is only defined in order to preserve backward
compatibility.

<PRE>
extern void HTFormatInit	(HTList * conversions);
</PRE>

<H2>Protocol Modules</H2>

Set up default bindings between access schemes and the set of protocol
modules in the Library.

<PRE>
#include "HTIcons.h"
#include "WWWHTTP.h"
#include "HTFile.h"
#include "HTFTP.h"
#include "HTGopher.h"
#include "HTTelnet.h"
#include "HTNews.h"

#ifdef HT_DIRECT_WAIS
#include "HTWAIS.h"
#endif

extern void HTAccessInit (void);
</PRE>

<H2>File Suffix Setup</H2>

This functions defines a basic set of file suffixes and the
corresponding media types.

<PRE>
extern void HTFileInit (void);
</PRE>

<H2>Register Callbacks For the NET manager</H2>

We register two often used callback functions: a BEFORE and a AFTER
callback Not done automaticly - may be done by application!

<PRE>
#include "HTHome.h"

extern void HTNetInit (void);
</PRE>

<H2>Register Callbacks for the ALERT Manager</H2>

We register a set of alert messages Not done automaticly - may be done
by application!

<PRE>
#include "HTDialog.h"

extern void HTAlertInit (void);
</PRE>

<PRE>
#endif
</PRE>

End of HTInit Module.
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