utils.h

   1 /***************************************************************************
   2                           utils.h  -  some utility funtions
   3                              -------------------
   4     begin                : lun ott 24 2005
   5     copyright            : (C) 2005-2007 by Maurizio Monge
   6     email                : monge@linuz.sns.it
   7  ***************************************************************************/
   8
   9 /***************************************************************************
  10  *                                                                         *
  11  *   This program is free software; you can redistribute it and/or modify  *
  12  *   it under the terms of the GNU General Public License as published by  *
  13  *   the Free Software Foundation; either version 2 of the License, or     *
  14  *   (at your option) any later version.                                   *
  15  *                                                                         *
  16  ***************************************************************************/
  17
  18 #ifndef __UTILS_H__
  19 #define __UTILS_H__
  20
  21 #include <stdio.h>
  22 #include <stdarg.h>
  23 #include <inttypes.h>
  24 #include <errno.h>
  25 #include "platform.h"
  26 #include "compiler.h"
  27 #include "array.h"
  28
  29 #define SWITCH(a, b) ({ typeof(a) tmp = b; b = a; a = tmp; })
  30 #define MAX(a,b) ({ typeof(a) _a=(a); typeof(b) _b=(b); _a > _b ? _a : _b; })
  31 #define MIN(a,b) ({ typeof(a) _a=(a); typeof(b) _b=(b); _a < _b ? _a : _b; })
  32 #define ABS(a) ({ typeof(a) _a=(a); _a > 0 ? _a : -_a; })
  33
  34 #ifdef __x86_64__
  35 #define U64F "%lu"
  36 #else
  37 #define U64F "%llu"
  38 #endif
  39
  40 #define PROF(f,n) {uint64_t tmp = rdtsc(); f; prof_##n += rdtsc()-tmp; }
  41
  42 template<typename T, int S>
  43 class Buf
  44 {
  45 private:
  46     T m_data[S];
  47
  48 public:
  49     T *data() { return m_data; }
  50     Buf() {}
  51     Buf(const char* fmt, ...)
  52     {
  53         va_list ap;
  54         va_start(ap, fmt);
  55         vsnprintf(m_data, S, fmt, ap);
  56         va_end(ap);
  57     }
  58 };
  59
  60 typedef Buf<char, 64>   TmpStr;
  61 typedef Buf<char, 1024> BigStr;
  62
  63 char **tokenize(const char *str, int* numtokens = NULL, bool accept_quotes = true);
  64 char **tokenize(const char *str, const char *whitespaces, int* numtokens = NULL, bool accept_quotes = true);
  65
  66 char **get_tokenized(int* numtokens = NULL, bool accept_quotes = true);
  67 char **get_tokenized(const char *whitespaces, int* numtokens = NULL, bool accept_quotes = true);
  68 char **fget_tokenized(FILE* f, int* numtokens = NULL, bool accept_quotes = true);
  69 char **fget_tokenized(FILE* f, const char *whitespaces, int* numtokens = NULL, bool accept_quotes = true);
  70
  71 #endif //__UTILS_H__