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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 COMMON_UTIL_H
#define COMMON_UTIL_H
#include "common/scummsys.h"
#include "common/str.h"
/**
* Check whether a given pointer is aligned correctly.
* Note that 'alignment' must be a power of two!
*/
#define IS_ALIGNED(value, alignment) \
((((size_t)value) & ((alignment) - 1)) == 0)
#ifdef MIN
#undef MIN
#endif
#ifdef MAX
#undef MAX
#endif
template<typename T> inline T ABS(T x) { return (x >= 0) ? x : -x; }
template<typename T> inline T MIN(T a, T b) { return (a < b) ? a : b; }
template<typename T> inline T MAX(T a, T b) { return (a > b) ? a : b; }
template<typename T> inline T CLIP(T v, T amin, T amax)
{ if (v < amin) return amin; else if (v > amax) return amax; else return v; }
/**
* Template method which swaps the vaulues of its two parameters.
*/
template<typename T> inline void SWAP(T &a, T &b) { T tmp = a; a = b; b = tmp; }
/**
* Macro which determines the number of entries in a fixed size array.
*/
#define ARRAYSIZE(x) ((int)(sizeof(x) / sizeof(x[0])))
/**
* Compute a pointer to one past the last element of an array.
*/
#define ARRAYEND(x) ((x) + ARRAYSIZE((x)))
/**
* @def SCUMMVM_CURRENT_FUNCTION
* This macro evaluates to the current function's name on compilers supporting this.
*/
#if defined(__GNUC__)
# define SCUMMVM_CURRENT_FUNCTION __PRETTY_FUNCTION__
#elif defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901)
# define SCUMMVM_CURRENT_FUNCTION __func__
#elif defined(_MSC_VER) && _MSC_VER >= 1300
# define SCUMMVM_CURRENT_FUNCTION __FUNCTION__
#else
# define SCUMMVM_CURRENT_FUNCTION "<unknown>"
#endif
namespace Common {
/**
* Print a hexdump of the data passed in. The number of bytes per line is
* customizable.
* @param data the data to be dumped
* @param len the length of that data
* @param bytesPerLine number of bytes to print per line (default: 16)
* @param startOffset shift the shown offsets by the starting offset (default: 0)
*/
extern void hexdump(const byte * data, int len, int bytesPerLine = 16, int startOffset = 0);
/**
* Parse a string for a boolean value.
* The strings "true", "yes", and "1" are interpreted as true.
* The strings "false", "no", and "0" are interpreted as false.
* This function ignores case.
*
* @param[in] val the string to parse
* @param[out] valAsBool the parsing result
* @return true if the string parsed correctly, false if an error occurred.
*/
bool parseBool(const String &val, bool &valAsBool);
/**
* Test whether the given character is alphanumeric (a-z, A-Z, 0-9).
* If the parameter is outside the range of a signed or unsigned char, then
* false is returned.
*
* @param c the character to test
* @return true if the character is alphanumeric, false otherwise.
*/
bool isAlnum(int c);
/**
* Test whether the given character is an alphabetic letter (a-z, A-Z).
* If the parameter is outside the range of a signed or unsigned char, then
* false is returned.
*
* @param c the character to test
* @return true if the character is TODO, false otherwise.
*/
bool isAlpha(int c);
/**
* Test whether the given character is a decimal-digit (0-9).
* If the parameter is outside the range of a signed or unsigned char, then
* false is returned.
*
* @param c the character to test
* @return true if the character is a decimal-digit, false otherwise.
*/
bool isDigit(int c);
/**
* Test whether the given character is a lower-case letter (a-z).
* If the parameter is outside the range of a signed or unsigned char, then
* false is returned.
*
* @param c the character to test
* @return true if the character is a lower-case letter, false otherwise.
*/
bool isLower(int c);
/**
* Test whether the given character is a white-space.
* White-space characters are ' ', '\t', '\r', '\n', '\v', '\f'.
*
* If the parameter is outside the range of a signed or unsigned char, then
* false is returned.
*
* @param c the character to test
* @return true if the character is a white-space, false otherwise.
*/
bool isSpace(int c);
/**
* Test whether the given character is an upper-case letter (A-Z).
* If the parameter is outside the range of a signed or unsigned char, then
* false is returned.
*
* @param c the character to test
* @return true if the character is an upper-case letter, false otherwise.
*/
bool isUpper(int c);
/**
* Test whether the given character is printable. This includes the space
* character (' ').
*
* If the parameter is outside the range of a signed or unsigned char, then
* false is returned.
*
* @param c the character to test
* @return true if the character is printable, false otherwise.
*/
bool isPrint(int c);
} // End of namespace Common
#endif
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