// -*- C++ -*-
/* Copyright (C) 1989-2000, 2001, 2002, 2003, 2005, 2006, 2009
   Free Software Foundation, Inc.
     Written by James Clark (jjc@jclark.com)

This file is part of groff.

groff is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation, either version 3 of the License, or
(at your option) any later version.

groff is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#if defined(__INTERIX) && !defined(_ALL_SOURCE)
#define _ALL_SOURCE
#endif

extern "C" {
#ifndef HAVE_STRERROR
  char *strerror(int);
#endif
  const char *i_to_a(int);
  const char *ui_to_a(unsigned int);
  const char *if_to_a(int, int);
}

#define __GETOPT_PREFIX groff_
#include <getopt.h>

#ifdef HAVE_SETLOCALE
#include <locale.h>
#define getlocale(category) setlocale(category, NULL)
#else /* !HAVE_SETLOCALE */
#define LC_ALL 0
#define LC_CTYPE 0
#define setlocale(category, locale) (void)(category, locale)
#define getlocale(category) ((void)(category), (char *)"C")
#endif /* !HAVE_SETLOCALE */

char *strsave(const char *s);
int is_prime(unsigned);
double groff_hypot(double, double);

#include <stdio.h>
#include <string.h>
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif

#include <stdarg.h>

/* HP-UX 10.20 and LynxOS 4.0.0 don't declare snprintf() */
#if !defined(HAVE_SNPRINTF) || defined(NEED_DECLARATION_SNPRINTF)
extern "C" { int snprintf(char *, size_t, const char *, /*args*/ ...); }
#endif

/* LynxOS 4.0.0 has snprintf() but no vsnprintf() */
#if !defined(HAVE_VSNPRINTF) || defined(NEED_DECLARATION_VSNPRINTF)
extern "C" { int vsnprintf(char *, size_t, const char *, va_list); }
#endif

/* LynxOS 4.0.0 doesn't declare vfprintf() */
#ifdef NEED_DECLARATION_VFPRINTF
extern "C" { int vfprintf(FILE *, const char *, va_list); }
#endif

#ifndef HAVE_MKSTEMP
/* since mkstemp() is defined as a real C++ function if taken from
   groff's mkstemp.cpp we need a declaration */
int mkstemp(char *tmpl);
#endif /* HAVE_MKSTEMP */

int mksdir(char *tmpl);

FILE *xtmpfile(char **namep = 0,
	       const char *postfix_long = 0, const char *postfix_short = 0,
	       int do_unlink = 1);
char *xtmptemplate(const char *postfix_long, const char *postfix_short);

#ifdef NEED_DECLARATION_POPEN
extern "C" { FILE *popen(const char *, const char *); }
#endif /* NEED_DECLARATION_POPEN */

#ifdef NEED_DECLARATION_PCLOSE
extern "C" { int pclose (FILE *); }
#endif /* NEED_DECLARATION_PCLOSE */

size_t file_name_max(const char *fname);
size_t path_name_max();

int interpret_lf_args(const char *p);

extern char invalid_char_table[];

inline int invalid_input_char(int c)
{
  return c >= 0 && invalid_char_table[c];
}

#ifdef HAVE_STRCASECMP
#ifdef NEED_DECLARATION_STRCASECMP
// Ultrix4.3's string.h fails to declare this.
extern "C" { int strcasecmp(const char *, const char *); }
#endif /* NEED_DECLARATION_STRCASECMP */
#else /* !HAVE_STRCASECMP */
extern "C" { int strcasecmp(const char *, const char *); }
#endif /* HAVE_STRCASECMP */

#if !defined(_AIX) && !defined(sinix) && !defined(__sinix__)
#ifdef HAVE_STRNCASECMP
#ifdef NEED_DECLARATION_STRNCASECMP
// SunOS's string.h fails to declare this.
extern "C" { int strncasecmp(const char *, const char *, int); }
#endif /* NEED_DECLARATION_STRNCASECMP */
#else /* !HAVE_STRNCASECMP */
extern "C" { int strncasecmp(const char *, const char *, size_t); }
#endif /* HAVE_STRNCASECMP */
#endif /* !_AIX && !sinix && !__sinix__ */

#ifdef HAVE_CC_LIMITS_H
#include <limits.h>
#else /* !HAVE_CC_LIMITS_H */
#define INT_MAX 2147483647
#endif /* !HAVE_CC_LIMITS_H */

/* It's not safe to rely on people getting INT_MIN right (ie signed). */

#ifdef INT_MIN
#undef INT_MIN
#endif

#ifdef CFRONT_ANSI_BUG

/* This works around a bug in cfront 2.0 used with ANSI C compilers. */

#define INT_MIN ((long)(-INT_MAX-1))

#else /* !CFRONT_ANSI_BUG */

#define INT_MIN (-INT_MAX-1)

#endif /* !CFRONT_ANSI_BUG */

/* Maximum number of digits in the decimal representation of an int
   (not including the -). */

#define INT_DIGITS 10

#ifdef PI
#undef PI
#endif

const double PI = 3.14159265358979323846;

/* ad_delete deletes an array of objects with destructors;
   a_delete deletes an array of objects without destructors */

#ifdef ARRAY_DELETE_NEEDS_SIZE
/* for 2.0 systems */
#define ad_delete(size) delete [size]
#define a_delete delete
#else /* !ARRAY_DELETE_NEEDS_SIZE */
/* for ARM systems */
#define ad_delete(size) delete []
#define a_delete delete []
#endif /* !ARRAY_DELETE_NEEDS_SIZE */