Source Code (Use browser search to find items of interest.)

kdvi'DVIFile (./kdegraphics/kdvi/print.cpp:25)

class DVIFile 
{
	Q_OBJECT
public:
	DVIFile(){}
	~DVIFile(){};
	void dviCopy(QString ifile, QString ofile, QStrList *pagelist,
			int first = 0, int last = 999999 );

};

kdvi'DVIFile::dviCopy() (./kdegraphics/kdvi/print.cpp:110)

void DVIFile::dviCopy(QString ifile, QString ofile, QStrList *pagelist,
	int first, int last)
{
	QFile in(ifile);
	QFile out(ofile);
	char buf[1024];
/*	these would be needed for better handling the used fonts
	int texfont[256], fontdeflen[256], fontseen[256];
	for (int i=0; i<256; i++ )
		texfont[i] = fontdeflen[i] = fontseen[i] = 0;
*/
	if (!in.open(IO_ReadOnly))
		KMessageBox::sorry( 0L,
			i18n("Cannot open dvi file!"));
	if (!out.open(IO_WriteOnly))
		KMessageBox::sorry( 0L,
			i18n("Cannot open output dvi file!"));
	in.readBlock( buf, 14 );
	out.writeBlock( buf, 14 );
	out.writeBlock( "\013kdvi output", 12 );
	
	int c, p = in.size()-3, n, tot, totout = 0, o = -1;
	in.at(p);
	while ( ( c = in.getch() ) == 223 ) // trailer
		in.at( --p );
	if ( c != 2 )
		KMessageBox::sorry( 0L,
			i18n("Cannot handle this dvi version!"));
	int post_post = p - 5;
	in.at( post_post + 1 );
	int post =  get4( in );
	in.at( post + 27 );
	tot = n = get2( in );
	int fntdefslen = post_post - in.at();
	int *pg = new int[tot + 1];
	pg[ tot ] = post;
	p = post - 40;
	while (n--)
	{
		in.at( p + 41 ),
		pg[n] = p = get4( in );
	}
/*
	for ( p = post + 29; p < post_post; p++ )
	{
		in.at( p );
		c = in.getch();
		if ( c == 138 ) )	// nop
			continue;
		if ( c == 243 )		// fnt_def1
		{
			texfont[ n = in.getch() ] = p;
			in.at( p + 14 );
			fontdeflen[ n ] = in.getch() + in.getch();
			p += 16 + fontdeflen[ n ];
		}
		else	debug("DVI file format error!");
	}
*/

	int defsdone = 0;
	for ( n=0; n < tot; n++ )	// copy pages to out
	{		
		if ( pagelist &&
			pagelist->find( QString().sprintf( "%4d", n + 1 ) ) < 0 )
			continue;
		if ( n + 1 < first || n + 1 > last )
			continue;
		in.at( pg[n] );
		in.readBlock( buf, 41 );
		out.writeBlock( buf, 41 );
		put4( out, o );
		o = out.at() - 45;
		if ( !defsdone ) // cannot copy fnt defs before page 1 due to bug in dvips
		{
			in.at( post + 29 );
			// copy font defs from postamble (bug: all not needed)
			for ( int i = fntdefslen; i>0; i-- )
				out.putch( in.getch() );
			defsdone = 1;
		}		
		in.at( pg[n] + 45 );
		for ( int i = pg[n+1] - pg[n] - 45; i > 0; i-- )
			out.putch( in.getch() );
		totout++;
	}
	out.putch( 248 );	// post
	put4( out, o );
	o = out.at() - 5;
	in.at( post + 5 );
	in.readBlock( buf, 22  );
	out.writeBlock( buf, 22 );
	put2( out, totout );
	in.at( post + 29 );
	for ( int i = post_post - ( post + 29 ); i > 0; i-- )
		out.putch( in.getch() );
	out.putch( 249 );	// post_post
	put4( out, o );
	out.putch( 2 );		// dvi file version id
	put4( out, 0xdfdfdfdf );// trailers
	while ( out.at() & 3 )
		out.putch( 0xdf );
	in.close();
	out.close();
	delete pg;
}