/*
 *  Copyright (C) 2002-2019  The DOSBox Team
 *
 *  This program 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */


#ifndef DOSBOX_SUPPORT_H
#define DOSBOX_SUPPORT_H

#include <algorithm>
#include <cstdio>
#include <ctype.h>
#include <string.h>
#include <string>
#ifndef DOSBOX_DOSBOX_H
#include "dosbox.h"
#endif

#if defined (_MSC_VER)						/* MS Visual C++ */
#define	strcasecmp(a,b) stricmp(a,b)
#define strncasecmp(a,b,n) _strnicmp(a,b,n)
#endif

/// Copy a string into C array
///
/// This function copies string pointed by src to fixed-size buffer dst.
/// At most N bytes from src are copied, where N is size of dst.
/// If exactly N bytes are copied, then terminating null byte is put
/// into buffer, thus buffer overrun is prevented.
///
/// Function returns pointer to buffer to be compatible with std::strcpy.
///
/// Usage:
///
///     char buffer[2];
///     safe_strcpy(buffer, "abc");
///     // buffer is filled with "a"

template<size_t N>
char * safe_strcpy(char (& dst)[N], const char * src) noexcept {
	snprintf(dst, N, "%s", src);
	return & dst[0];
}

template<size_t N>
char * safe_strcat(char (& dst)[N], const char * src) noexcept {
	strncat(dst, src, N - strnlen(dst, N) - 1);
	return & dst[0];
}

#define safe_strncpy(a,b,n) do { strncpy((a),(b),(n)-1); (a)[(n)-1] = 0; } while (0)

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

// Clamp: given a value that can be compared with the given minimum and maximum
//        values, this function will:
//          * return the value if it's in-between or equal to either bounds, or
//          * return either bound depending on which bound the value is beyond
template <class T> T clamp(const T& n, const T& lower, const T& upper) {
	return std::max<T>(lower, std::min<T>(n, upper));
}

void strreplace(char * str,char o,char n);
char *ltrim(char *str);
char *rtrim(char *str);
char *trim(char * str);
char * upcase(char * str);
char * lowcase(char * str);

bool ScanCMDBool(char * cmd,char const * const check);
char * ScanCMDRemain(char * cmd);
char * StripWord(char *&cmd);
bool IsDecWord(char * word);
bool IsHexWord(char * word);
Bits ConvDecWord(char * word);
Bits ConvHexWord(char * word);

void trim(std::string& str);
void upcase(std::string &str);
void lowcase(std::string &str);

#endif
