net/khttpd/make_times_h.c

   1 /*
   2
   3 This program generates the "times.h" file with the zulu-times of the first of
   4 every month of a decade.
   5
   6 */
   7 /****************************************************************
   8  *      This program is free software; you can redistribute it and/or modify
   9  *      it under the terms of the GNU General Public License as published by
  10  *      the Free Software Foundation; either version 2, or (at your option)
  11  *      any later version.
  12  *
  13  *      This program is distributed in the hope that it will be useful,
  14  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *      GNU General Public License for more details.
  17  *
  18  *      You should have received a copy of the GNU General Public License
  19  *      along with this program; if not, write to the Free Software
  20  *      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21  *
  22  ****************************************************************/
  23
  24 #include <time.h>
  25 #include <stdio.h>
  26
  27 static time_t GetDay(int D,int M,int Y)
  28 {
  29         struct tm TM;
  30
  31         TM.tm_sec       = 0;
  32         TM.tm_min       = 0;
  33         TM.tm_hour      = 0;
  34         TM.tm_mday      = D;
  35         TM.tm_mon       = M;
  36         TM.tm_wday      = 0;
  37         TM.tm_yday      = 0;
  38         TM.tm_year      = Y-1900;
  39         TM.tm_isdst     = 0;
  40
  41         return mktime(&TM);
  42
  43 }
  44 static int WeekGetDay(int D,int M,int Y)
  45 {
  46         struct tm TM;
  47
  48         TM.tm_sec       = 0;
  49         TM.tm_min       = 0;
  50         TM.tm_hour      = 0;
  51         TM.tm_mday      = D;
  52         TM.tm_mon       = M;
  53         TM.tm_year      = Y-1900;
  54         TM.tm_isdst     = 0;
  55         TM.tm_wday      = 0;
  56         TM.tm_yday      = 0;
  57
  58         (void)mktime(&TM);
  59
  60         return TM.tm_wday;
  61
  62 }
  63
  64 int main(void)
  65 {
  66         int M,Y;
  67         FILE *file;
  68
  69         file=fopen("times.h","w");
  70
  71         if (file==NULL)
  72                 return 0;
  73
  74         fprintf(file,"static time_t TimeDays[10][13] = { \n");
  75
  76         Y=1997;
  77         while (Y<2007)
  78         {
  79                 M=0;
  80                 fprintf(file," { ");
  81                 while (M<12)
  82                 {
  83                         fprintf(file,"%i",(int)GetDay(1,M,Y));
  84                         fprintf(file,",\t");
  85
  86                         M++;
  87                 }
  88
  89                 fprintf(file,"%i } ",(int)GetDay(1,0,Y+1));
  90                 if (Y!=2006) fprintf(file,",");
  91                 fprintf(file,"\n");
  92                 Y++;
  93         }
  94         fprintf(file,"};\n");
  95
  96         fprintf(file,"static int WeekDays[10][13] = { \n");
  97
  98         Y=1997;
  99         while (Y<2007)
 100         {
 101                 M=0;
 102                 fprintf(file," { ");
 103                 while (M<12)
 104                 {
 105                         fprintf(file,"%i",(int)WeekGetDay(1,M,Y));
 106                         fprintf(file,",\t");
 107
 108                         M++;
 109                 }
 110
 111                 fprintf(file,"%i } ",(int)WeekGetDay(1,0,Y+1));
 112                 if (Y!=2006) fprintf(file,",");
 113                 fprintf(file,"\n");
 114                 Y++;
 115         }
 116         fprintf(file,"};\n");
 117         fprintf(file,"#define KHTTPD_YEAROFFSET   1997\n");
 118         fprintf(file,"#define KHTTPD_NUMYEARS     10\n");
 119         (void)fclose(file);
 120
 121         return 0;
 122 }