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From: bogatko@lzga.ATT.COM (George Bogatko)
Newsgroups: comp.lang.c,comp.unix.questions
Subject: Re: Using Lex (and Yacc) on a string.
Summary: heres one way
Message-ID: <2002@lzga.ATT.COM>
X-Local-Date: 10 Aug 90 09:42:20 PDT
Date: 10 Aug 90 16:42:20 GMT
References: <1990Aug10.012927.5558@basho.uucp>
Organization: AT&T BL Middletown/Lincroft NJ USA
Lines: 39

In article <1990Aug10.012927.5558@basho.uucp>, john@basho.uucp (John Lacey) writes:
> Has anyone done this, or see a way to do it, or know a way to do it, or ....

Put these lines in your lex file after the #include lines

%{
#include <stdio.h>
#include <y.tab.h>

extern char *mis_ptr;

#undef input
#undef unput
# define input() (*mis_ptr=='\n'?0:*mis_ptr++)
# define unput(c) (*--mis_ptr=(c) )
%}


Now have a char buff called myinputstring

char myinputstring[100];

do the following in main:

char *mis_ptr;
main()
{
	for(;;)
	{
		gets(buf);
		mis_ptr = buf;
		yylex();
	}
}

I think you get the picture now?


GB