Subversion Repositories planix.SVN

#include	<libl.h>

#include	<stdio.h>

extern	char	yytext[];

extern	int	yyleng;

extern	int	yyprevious;

void	yyunput(int c);

void

yyless(int x)

{

	char *lastch, *ptr;

	lastch = yytext+yyleng;

	if(x>=0 && x <= yyleng)

		ptr = x + yytext;

	else

		ptr = (char*)x;

	while(lastch > ptr)

		yyunput(*--lastch);

	*lastch = 0;

	if (ptr >yytext)

		yyprevious = *--lastch;

	yyleng = ptr-yytext;

}