/*	$NetBSD: common.h,v 1.17 2005/03/25 23:00:55 skd Exp $	*/

/*
 * Copyright (c) 1988, Larry Wall
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following condition
 * is met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this condition and the following disclaimer.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#define DEBUGGING

/* shut lint up about the following when return value ignored */

#define Signal (void)signal
#define Unlink (void)unlink
#define Lseek (void)lseek
#define Fseek (void)fseek
#define Fstat (void)fstat
#define Pclose (void)pclose
#define Close (void)close
#define Fclose (void)fclose
#define Fflush (void)fflush

#include <stdio.h>
#include <string.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>
#include <signal.h>

/* constants */

/* AIX predefines these.  */
#ifdef TRUE
#undef TRUE
#endif
#ifdef FALSE
#undef FALSE
#endif
#define TRUE (1)
#define FALSE (0)

#define MAXHUNKSIZE 100000		/* is this enough lines? */
#define INITHUNKMAX 125			/* initial dynamic allocation size */
#define MAXLINELEN 10240

#define SCCSPREFIX "s."
#define GET "get -e %s"
#define SCCSDIFF "get -p %s | diff - %s >/dev/null"

#define RCSSUFFIX ",v"
#define CHECKOUT "co -l %s"
#define RCSDIFF "rcsdiff %s > /dev/null"

#define ORIGEXT ".orig"
#define REJEXT ".rej"

/* handy definitions */

#define Nulline 0

#define strNE(s1,s2) (strcmp(s1, s2))
#define strEQ(s1,s2) (!strcmp(s1, s2))
#define strnNE(s1,s2,l) (strncmp(s1, s2, l))
#define strnEQ(s1,s2,l) (!strncmp(s1, s2, l))

/* typedefs */

typedef char bool;
typedef int LINENUM;			/* must be signed */

/* globals */

EXT int Argc;				/* guess */
EXT char **Argv;

/* TRUE if -C was specified on command line.  */
EXT int check_only;

EXT struct stat filestat;		/* file statistics area */
EXT mode_t filemode INIT(0644);

EXT char buf[MAXLINELEN];		/* general purpose buffer */
EXT FILE *ofp INIT(NULL);		/* output file pointer */
EXT FILE *rejfp INIT(NULL);		/* reject file pointer */

EXT int myuid;				/* cache getuid return value */

#define MAXFILEC 2
EXT int filec INIT(0);			/* how many file arguments? */
EXT char *filearg[MAXFILEC];
EXT bool ok_to_create_file INIT(FALSE);
EXT bool filename_is_dev_null INIT(FALSE);
EXT bool old_file_is_dev_null INIT(FALSE);
EXT char *bestguess INIT(NULL);		/* guess at correct filename */

EXT char *outname INIT(NULL);
EXT char rejname[128];

EXT char *origprae INIT(NULL);

EXT char *TMPOUTNAME;
EXT char *TMPINNAME;
EXT char *TMPREJNAME;
EXT char *TMPPATNAME;
EXT bool toutkeep INIT(FALSE);
EXT bool trejkeep INIT(FALSE);

EXT LINENUM last_offset INIT(0);
#ifdef DEBUGGING
EXT int debug INIT(0);
#endif
EXT LINENUM maxfuzz INIT(2);
EXT bool force INIT(FALSE);
EXT bool batch INIT(FALSE);
EXT bool verbose INIT(TRUE);
EXT bool reverse INIT(FALSE);
EXT bool noreverse INIT(FALSE);
EXT bool skip_rest_of_patch INIT(FALSE);
EXT int strippath INIT(957);
EXT bool canonicalize INIT(FALSE);

#define CONTEXT_DIFF 1
#define NORMAL_DIFF 2
#define ED_DIFF 3
#define NEW_CONTEXT_DIFF 4
#define UNI_DIFF 5
EXT int diff_type INIT(0);

EXT bool do_defines INIT(FALSE);	/* patch using ifdef, ifndef, etc. */
EXT char if_defined[128];		/* #ifdef xyzzy */
EXT char not_defined[128];		/* #ifndef xyzzy */
EXT char else_defined[] INIT("#else\n");/* #else */
EXT char end_defined[128];		/* #endif xyzzy */

EXT char *revision INIT(NULL);		/* prerequisite revision, if any */

#include <errno.h>

#if !defined(S_ISDIR) && defined(S_IFDIR)
#define	S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#endif
#if !defined(S_ISREG) && defined(S_IFREG)
#define	S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
#endif

void my_exit(int) __attribute__((__noreturn__));