Including Other HTML Documents

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	It's often convenient to use existing HTML documents within an html++ application. A typical approach is to use a third-party WYSIWIG design tool (such as Microsoft FrontPage) to create headers, footers, or forms. Such documents can be easily included in html++ output, having the benefit of being able to be modified without recompiling the application.

Example

	#include <stdio.h>
	#include <stdlib.h>
	#include <dcmicro/htmlpp/htmlpp.h>
	//  Load an HTML document into an object
	htmlGroup& IncludeHTML
	(
	htmlGroup& group,  //  container object
	char * filename    //  filename to load
	)
	{
	FILE * file ;
	char   line_data[ 300 ] ;  //  increase as necessary
	String str ;
	//  open the specified text file
	file = fopen( filename, "rt" ) ;
	if ( file != (FILE *) NULL )
	{
	//  loop for all lines in the file
	while (
	fgets( line_data, sizeof(line_data), file ) != NULL
	)
	{
	str = line_data ;
	str.ToUpper() ;
	if ( str.Contains("HTML>")
	|| str.Contains("HEAD>")
	|| str.Contains("<BODY")
	|| str.Contains("TITLE>")
	|| str.Contains("BODY>") )
	{
	//  Don't include lines containing
	//  keywords relating to the page.
	}
	else
	{
	//  Store the line as a literal to avoid
	//  translation of symbols when output.
	group << htmlLiteral( line_data ) ;
	}
	}
	fclose( file ) ;
	}
	return group ;
	}
	int main( void )
	{
	htmlCgi   server ;
	htmlPage  page( "html++ test app" ) ;
	//  Load the header document (it is assumed to exist)
	htmlContainer   header ;
	IncludeHTML( header, "/home/templates/header.html" ) ;
	//  Load the footer document
	htmlContainer   footer ;
	IncludeHTML( footer, "/home/templates/footer.html" ) ;
	//  Construct the page, inserting the header
	//  and footer HTML documents around the text.
	page << header
	<< htmlHorizontalRule()
	<< "This is a test of using htmlContainer to "
	"include existing header and footer documents."
	<< htmlHorizontalRule()
	<< footer ;
	server << page ;
	return 0 ;
	}

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