/* $Xorg: def.h,v 1.4 2001/02/09 02:03:16 xorgcvs Exp $ */
/*

Copyright (c) 1993, 1994, 1998 The Open Group.

Permission to use, copy, modify, distribute, and sell this software and its
documentation for any purpose is hereby granted without fee, provided that
the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation.

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Except as contained in this notice, the name of The Open Group shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from The Open Group.

*/

#include "Xos.h"
#include "Xfuncproto.h"
#include <stdio.h>
#include <ctype.h>
#ifndef X_NOT_POSIX
#ifndef _POSIX_SOURCE
#define _POSIX_SOURCE
#endif
#endif
#include <sys/types.h>
#include <fcntl.h>
#include <sys/stat.h>

#define MAXDEFINES	512
#define MAXFILES	1024
#define MAXDIRS		64
#define SYMTABINC	10	/* must be > 1 for define() to work right */
#define	TRUE		1
#define	FALSE		0

/* the following must match the directives table in main.c */
#define	IF		0
#define	IFDEF		1
#define	IFNDEF		2
#define	ELSE		3
#define	ENDIF		4
#define	DEFINE		5
#define	UNDEF		6
#define	INCLUDE		7
#define	LINE		8
#define	PRAGMA		9
#define ERROR           10
#define IDENT           11
#define SCCS            12
#define ELIF            13
#define EJECT           14
#define WARNING		15
#define IFFALSE         16     /* pseudo value --- never matched */
#define ELIFFALSE       17     /* pseudo value --- never matched */
#define INCLUDEDOT      18     /* pseudo value --- never matched */
#define IFGUESSFALSE    19     /* pseudo value --- never matched */
#define ELIFGUESSFALSE  20     /* pseudo value --- never matched */

#ifdef DEBUG
extern int	_debugmask;
/*
 * debug levels are:
 * 
 *     0	show ifn*(def)*,endif
 *     1	trace defined/!defined
 *     2	show #include
 *     3	show #include SYMBOL
 *     4-6	unused
 */
#define debug(level,arg) { if (_debugmask & (1 << level)) warning arg; }
#else
#define	debug(level,arg) /**/
#endif /* DEBUG */

typedef	unsigned char boolean;

struct symtab {
	char	*s_name;
	char	*s_value;
};

/* possible i_flag */
#define DEFCHECKED	(1<<0)	/* whether defines have been checked */
#define NOTIFIED	(1<<1)	/* whether we have revealed includes */
#define MARKED		(1<<2)	/* whether it's in the makefile */
#define SEARCHED	(1<<3)	/* whether we have read this */
#define FINISHED	(1<<4)	/* whether we are done reading this */
#define INCLUDED_SYM	(1<<5)	/* whether #include SYMBOL was found
				   Can't use i_list if TRUE */
struct	inclist {
	char		*i_incstring;	/* string from #include line */
	char		*i_file;	/* path name of the include file */
	struct inclist	**i_list;	/* list of files it itself includes */
	int		i_listlen;	/* length of i_list */
	struct symtab	**i_defs;	/* symbol table for this file and its
					   children when merged */
	int		i_ndefs;	/* current # defines */
	boolean		*i_merged;      /* whether we have merged child
					   defines */
	unsigned char   i_flags;
};

struct filepointer {
	char	*f_p;
	char	*f_base;
	char	*f_end;
	long	f_len;
	long	f_line;
};

#ifndef X_NOT_STDC_ENV
#include <stdlib.h>
#if defined(macII) && !defined(__STDC__)  /* stdlib.h fails to define these */
char *malloc(), *realloc();
#endif /* macII */
#else
char			*malloc();
char			*realloc();
#endif

char			*copy();
char			*base_name();
char			*getline();
struct symtab		**slookup();
struct symtab		**isdefined();
struct symtab		**fdefined();
struct filepointer	*getfile();
struct inclist		*newinclude();
struct inclist		*inc_path();

#if NeedVarargsPrototypes
extern void fatalerr(char *, ...);
extern void warning(char *, ...);
extern void warning1(char *, ...);
#endif