ack/lang/cem/cemcom.ansi/input.c

/*
 * (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
 * See the copyright notice in the ACK home directory, in the file "Copyright".
 */
/* $Id$ */

#include "parameters.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "file_info.h"
#include "input.h"

#define INP_PUSHBACK	3
#define INP_TYPE	struct file_info
#define INP_VAR		finfo
struct file_info	finfo;
#include <inp_pkg.body>
#include <alloc.h>

#ifndef NOPP
#ifdef DBSYMTAB
#include <stb.h>
#include <em.h>
extern int      IncludeLevel;
extern char	options[];
#endif

char *
getwdir(fn)
	register char *fn;
{
	register char *p;
	char *strrchr();

	p = strrchr(fn, '/');
	while (p && *(p + 1) == '\0') {	/* remove trailing /'s */
		*p = '\0';
		p = strrchr(fn, '/');
	}

	if (fn[0] == '\0' || (fn[0] == '/' && p == &fn[0])) /* absolute path */
		return "";
	if (p) {
		*p = '\0';
		fn = Salloc(fn,(unsigned) (p - &fn[0] + 1));
		*p = '/';
		return fn;
	}
	return "";
}

int	InputLevel;
extern int		nestlevel;
#endif /* NOPP */

int	NoUnstack;

AtEoIT()
{
#ifndef NOPP
	InputLevel--;
	unstackrepl();
#endif /* NOPP */
	return 0;
}

extern char *source;

AtEoIF()
{
#ifndef NOPP
	if (nestlevel != nestlow) lexwarning("missing #endif");
	else
#endif /* NOPP */
	if (NoUnstack) lexerror("unexpected EOF");
#ifndef NOPP
	nestlevel = nestlow;
#ifdef DBSYMTAB
	if (options['g'] && IncludeLevel > 0) {
		C_ms_stb_cst(FileName, N_EINCL, 0, (arith) 0);
	}
	IncludeLevel--;
#endif
	/* We don't free WorkingDir and FileName here because the rest of the
	 * compiler may be holding pointers to them for displaying error messages.
	 */
#endif /* NOPP */
	return 0;
}