/*
	(void) initline(Line *m) 

	(void) extend_line(Line *l, int n)

	(void) cpytitlestr(char *str, Line *ttl, int i, int pass)


	Copyright (c) 1992 by CRC
*/

#include "creatdct.h"


/* ------------------------------------------------------------------------ */

/*
	(void) initline(Line *l) 
*/

void initline(l)
register Line *l ; 
{
	l->n = 0 ; 
	l->s[0] = '\0' ;
}




/* ------------------------------------------------------------------------ */

/*
	(void) extendline(Line *l, int n) 

	Extends (pads with blanks) line l to have length n if 
	n > current length of line; otherwise, does nothing.
*/

void extend_line(l,n)
Line *l ;
int n ; 
{
	register int i ; 

	if (l->n >= n) return ;
	for (i= l->n; i<n; i++) l->s[i] = ' ' ; 
	l->s[i] = '\0' ; 
	l->n = n ; 
}


/* ------------------------------------------------------------------------ */

/*
	(void) cpytitlestr(char *str, Line *ttl, int i, int pass)

	copies i-th title from Line ttl into string str.
	str contains no leading nor trailing blanks.

	if pass==1, title information is copied using col and w, otherwise 
	tcol and tw are used.
*/
	


void cpytitlestr(str,ttl,i,pass)
char *str ; 
Line *ttl ;
int i ; 
int pass ;
{
	int	col, endcol ; 
	char	 c ; 
	char	tok[MAXWIDTH] ;

	col = (pass==1 ? vars[i].col : vars[i].tcol) ;
	endcol = col + (pass==1 ? vars[i].w : vars[i].tw) ;
	c = ttl->s[endcol] ;
	ttl->s[endcol] = '\0' ;
	strcpy(tok, &(ttl->s[col])) ;
	ttl->s[endcol] = c ; 
	strcpy(str,skipblnk(tok)) ; 
	righttrim(str) ; 
}