/***	HYPERTEXT OBJECT BUILDER****	(c) COPYRIGHT MIT 1999.**	Please first read the full copyright statement in the file COPYRIGH.**	@(#) $Id: HText.c,v 2.4 1999/02/07 18:09:27 frystyk Exp $****	This generates of a hypertext object and calls the application**	via callbacks.*//* Library include files */#include "wwwsys.h"#include "WWWUtil.h"#include "WWWCore.h"#include "HText.h"#include "HTextImp.h"/* Default callbacks that the application can register */PRIVATE HText_new * 			text_new;PRIVATE HText_delete *			text_delete;PRIVATE HText_build *		       	text_build;PRIVATE HText_addText *			text_addText;PRIVATE HText_foundLink *		text_foundLink;PRIVATE HText_beginElement *		text_beginElement;PRIVATE HText_endElement *		text_endElement;PRIVATE HText_unparsedBeginElement *	text_unparsedBeginElement;PRIVATE HText_unparsedEndElement *	text_unparsedEndElement;PRIVATE HText_unparsedEntity *		text_unparsedEntity;/* HText handler instance */struct _HTextImp {    HText *			app;    HText_new * 		text_new;    HText_delete *		text_delete;    HText_build *		text_build;    HText_addText *		text_addText;    HText_foundLink *		text_foundLink;    HText_beginElement *	text_beginElement;    HText_endElement *		text_endElement;    HText_unparsedBeginElement *text_unparsedBeginElement;    HText_unparsedEndElement *	text_unparsedEndElement;    HText_unparsedEntity *	text_unparsedEntity;};/* --------------------------------------------------------------------------- */PUBLIC HTextImp * HTextImp_new (HTRequest *	 request,				HTParentAnchor * anchor,				HTStream *	 output_stream){    HTextImp * me = NULL;    if ((me = (HTextImp *) HT_CALLOC(1, sizeof (HTextImp))) == NULL)	HT_OUTOFMEM("HTextImp_new");    me->text_new = text_new;        me->text_delete = text_delete;     me->text_build = text_build;      me->text_addText = text_addText;    me->text_foundLink = text_foundLink;    me->text_beginElement = text_beginElement;    me->text_endElement = text_endElement;    me->text_unparsedBeginElement = text_unparsedBeginElement;    me->text_unparsedEndElement = text_unparsedEndElement;    me->text_unparsedEntity = text_unparsedEntity;    if (me->text_new) me->app = (*me->text_new)(request, anchor, output_stream);    return me;}PUBLIC BOOL HTextImp_delete (HTextImp * me){    if (me) {	/*	** Note that we do not call the delete method on the app	** HText object as this normally stays around after the	** request has been deleted and certainly it should be	** deleted by the app and not libwww	*/	HT_FREE(me);	return YES;    }    return NO;}PUBLIC void HTextImp_build (HTextImp * me, HTextStatus status){    if (me && me->text_build) 	(*me->text_build)(me->app, status);}PUBLIC void HTextImp_addText (HTextImp * 	me,			      const char * 	buffer,			      int 		length){    if (me && me->text_addText) 	(*me->text_addText)(me->app, buffer, length);}PUBLIC void HTextImp_foundLink (HTextImp * 	me,				int 		element_number,				int 		attribute_number,				HTChildAnchor *anchor,				const BOOL *	present,				const char **	value){    if (me && me->text_foundLink) 	(*me->text_foundLink)(me->app, element_number, attribute_number,			   anchor, present, value);}PUBLIC void HTextImp_beginElement (HTextImp * 	me,				   int		element_number,				   const BOOL *	present,				   const char **value){    if (me && me->text_beginElement) 	(*me->text_beginElement)(me->app, element_number, present, value);}PUBLIC void HTextImp_endElement (HTextImp * 	me,				 int		element_number){    if (me && me->text_endElement) 	(*me->text_endElement)(me->app, element_number);}PUBLIC void HTextImp_unparsedBeginElement (HTextImp * 	me,					   const char * buffer,					   int 		length){    if (me && me->text_unparsedBeginElement) 	(*me->text_unparsedBeginElement)(me->app, buffer, length);}PUBLIC void HTextImp_unparsedEndElement (HTextImp * 	me,					 const char * buffer,					 int 		length){    if (me && me->text_unparsedEndElement) 	(*me->text_unparsedEndElement)(me->app, buffer, length);}PUBLIC void HTextImp_unparsedEntity (HTextImp * 	me,				     const char * 	buffer,				     int 		length){    if (me && me->text_unparsedEntity) 	(*me->text_unparsedEntity)(me->app, buffer, length);}/* --------------------------------------------------------------------------- */PUBLIC BOOL HText_registerCDCallback (HText_new * ncb,					  HText_delete * dcb){    if (ncb && dcb) {	text_new = ncb;	text_delete = dcb;	return YES;    }    return NO;}PUBLIC BOOL HText_unregisterCDCallback (void){    text_new = NULL;    text_delete = NULL;    return YES;}PUBLIC BOOL HText_registerBuildCallback (HText_build * bcb){    text_build = bcb;    return YES;}PUBLIC BOOL HText_registerTextCallback (HText_addText * tcb){    text_addText = tcb;    return YES;}PUBLIC BOOL HText_unregisterTextCallback (void){    text_addText = NULL;    return YES;}PUBLIC BOOL HText_registerLinkCallback (HText_foundLink * lcb){    text_foundLink = lcb;    return YES;}PUBLIC BOOL HText_unregisterLinkCallback (void){    text_foundLink = NULL;    return YES;}PUBLIC BOOL HText_registerElementCallback (HText_beginElement * bcb,					       HText_endElement * ecb){    text_beginElement = bcb;    text_endElement = ecb;    return YES;}PUBLIC BOOL HText_unregisterElementCallback (void){    text_beginElement = NULL;    return YES;}PUBLIC BOOL HText_registerUnparsedElementCallback (HText_unparsedBeginElement * ubcb,						   HText_unparsedBeginElement * uecb){    text_unparsedBeginElement = ubcb;    text_unparsedEndElement = uecb;    return YES;}PUBLIC BOOL HText_unregisterUnparsedElementCallback (void){    text_unparsedBeginElement = NULL;    text_unparsedEndElement = NULL;    return YES;}PUBLIC BOOL HText_registerUnparsedEntityCallback (HText_unparsedEntity * tcb){    text_unparsedEntity = tcb;    return YES;}PUBLIC BOOL HText_unregisterUnparsedEntityCallback (void){    text_unparsedEntity = NULL;    return YES;}