tools/buildno.c

   1 /* $Id$
   2  *
   3  * buildno - Generate the build number for ReactOS
   4  *
   5  * Copyright (c) 1999,2000 Emanuele Aliberti
   6  *
   7  * License: GNU GPL
   8  *
   9  * It assumes the last release date is defined in
  10  * <reactos/version.h> as a macro named
  11  *
  12  * KERNEL_RELEASE_DATE
  13  *
  14  * as a 32-bit unsigned long YYYYMMDD (UTC;
  15  * MM=01-12; DD=01-31).
  16  *
  17  * The build number is the number of full days
  18  * elapsed since the last release date (UTC).
  19  *
  20  * The build number is stored in the file
  21  * <reactos/buildno.h> as a set of macros:
  22  *
  23  * KERNEL_VERSION_BUILD         base 10 number
  24  * KERNEL_VERSION_BUILD_STR     C string
  25  * KERNEL_VERSION_BUILD_RC      RC string
  26  *
  27  * REVISIONS
  28  * ---------
  29  * 2000-01-22 (ea)
  30  *      Fixed bugs: tm_year is (current_year - 1900),
  31  *      tm_month is 0-11 not 1-12 and code ignored TZ.
  32  * 2000-12-10 (ea)
  33  *      Added -p option to make it simply print the
  34  *      version number, but skip buildno.h generation.
  35  */
  36 #include <stdio.h>
  37 #include <stdlib.h>
  38 #include <time.h>
  39 #include "../include/reactos/version.h"
  40
  41 #define FALSE 0
  42 #define TRUE  1
  43
  44 /* File to (over)write */
  45 #define BUILDNO_INCLUDE_FILE "../include/reactos/buildno.h"
  46
  47 static char * argv0 = "";
  48
  49 #ifdef DBG
  50 void
  51 tm_dump (const char *tag, struct tm * t)
  52 {
  53         printf ("%s->tm_sec   = %d\n", tag, t->tm_sec);
  54         printf ("%s->tm_min   = %d\n", tag, t->tm_min);
  55         printf ("%s->tm_hour  = %d\n", tag, t->tm_hour);
  56         printf ("%s->tm_mday  = %d\n", tag, t->tm_mday);
  57         printf ("%s->tm_mon   = %d\n", tag, t->tm_mon);
  58         printf ("%s->tm_year  = %d\n", tag, t->tm_year);
  59         printf ("%s->tm_wday  = %d\n", tag, t->tm_wday);
  60         printf ("%s->tm_yday  = %d\n", tag, t->tm_yday);
  61         printf ("%s->tm_isdst = %d\n\n", tag, t->tm_isdst);
  62 }
  63 #endif
  64
  65
  66 int
  67 elapsed_days (
  68         time_t  t_today,
  69         time_t  t_release_day
  70         )
  71 {
  72         double  seconds = difftime (t_today, t_release_day);
  73         double  days = seconds / (double) 86400.0;
  74         char    buf [32];
  75         char    * dot = buf;
  76
  77         sprintf (buf, "%f", days );
  78
  79         while ( *dot && *dot != '.') ++dot;
  80         *dot = '\0';
  81
  82         return atol (buf);
  83 }
  84
  85 void
  86 write_h (int build)
  87 {
  88   FILE  *h = NULL;
  89   char* s;
  90   char* s1;
  91   int length;
  92
  93   s1 = s = malloc(256 * 1024);
  94
  95   s = s + sprintf (s, "/* Do not edit - Machine generated */\n");
  96
  97   s = s + sprintf (s, "#ifndef _INC_REACTOS_BUILDNO\n" );
  98   s = s + sprintf (s, "#define _INC_REACTOS_BUILDNO\n" );
  99
 100   s = s + sprintf (s, "#define KERNEL_VERSION_BUILD\t%d\n", build);
 101   s = s + sprintf (s, "#define KERNEL_VERSION_BUILD_STR\t\"%d\"\n", build);
 102   s = s + sprintf (s, "#define KERNEL_RELEASE_RC\t\"%d.%d.%d.%d\\0\"\n",
 103                    KERNEL_VERSION_MAJOR, KERNEL_VERSION_MINOR,
 104                    KERNEL_VERSION_PATCH_LEVEL, build);
 105   s = s + sprintf (s, "#define KERNEL_RELEASE_STR\t\"%d.%d.%d.%d\"\n",
 106                    KERNEL_VERSION_MAJOR,
 107                    KERNEL_VERSION_MINOR,
 108                    KERNEL_VERSION_PATCH_LEVEL,
 109                    build);
 110   s = s + sprintf (s, "#define KERNEL_VERSION_RC\t\"%d.%d.%d\\0\"\n",
 111                    KERNEL_VERSION_MAJOR,
 112                    KERNEL_VERSION_MINOR,
 113                    KERNEL_VERSION_PATCH_LEVEL);
 114   s = s + sprintf (s, "#define KERNEL_VERSION_STR\t\"%d.%d.%d\"\n",
 115                    KERNEL_VERSION_MAJOR,
 116                    KERNEL_VERSION_MINOR,
 117                    KERNEL_VERSION_PATCH_LEVEL);
 118   s = s + sprintf (s, "#endif\n/* EOF */\n");
 119
 120   h = fopen (BUILDNO_INCLUDE_FILE, "r");
 121   if (h != NULL)
 122     {
 123       fseek(h, 0, SEEK_END);
 124       length = ftell(h);
 125       if (length == strlen(s1))
 126         {
 127           char* orig;
 128
 129           orig = malloc(length);
 130           fseek(h, 0, SEEK_SET);
 131           fread(orig, 1, length, h);
 132           if (memcmp(s1, orig, length) == 0)
 133             {
 134               fclose(h);
 135               return;
 136             }
 137         }
 138       fclose(h);
 139     }
 140
 141   h = fopen (BUILDNO_INCLUDE_FILE, "w");
 142   if (!h)
 143     {
 144       fprintf (stderr,
 145                "%s: can not create file \"%s\"!\n",
 146                argv0,
 147                BUILDNO_INCLUDE_FILE);
 148       return;
 149     }
 150   fwrite(s1, 1, strlen(s1), h);
 151   fclose (h);
 152 }
 153
 154 void
 155 usage (void)
 156 {
 157         fprintf (
 158                 stderr,
 159                 "Usage: %s [-{p|q}]\n\n  -p  print version number and exit\n  -q  run in quiet mode\n",
 160                 argv0
 161                 );
 162         exit (EXIT_SUCCESS);
 163 }
 164
 165
 166 int
 167 main (int argc, char * argv [])
 168 {
 169         int             print_only = FALSE;
 170         int             quiet = FALSE;
 171
 172         int             year = 0;
 173         int             month = 0;
 174         int             day = 0;
 175         int             build = 0;
 176
 177         time_t          t0 = 0;
 178         struct tm       t0_tm = {0};
 179         time_t          t1 = 0;
 180         struct tm       * t1_tm = NULL;
 181
 182         argv0 = argv[0];
 183
 184         switch (argc)
 185         {
 186                 case 1:
 187                         break;
 188                 case 2:
 189                         if (argv[1][0] == '-')
 190                         {
 191                                 if (argv[1][1] == 'q')
 192                                 {
 193                                         quiet = TRUE;
 194                                 }
 195                                 else  if (argv[1][1] == 'p')
 196                                 {
 197                                         print_only = TRUE;
 198                                 }
 199                                 else
 200                                 {
 201                                         usage ();
 202                                 }
 203                         }
 204                         else
 205                         {
 206                                 usage ();
 207                         }
 208                         break;
 209                 default:
 210                         usage ();
 211         }
 212         /*
 213          * Set TZ information.
 214          */
 215         tzset ();
 216         /*
 217          * We are building TODAY!
 218          */
 219         time (& t0);
 220         /*
 221          * "Parse" the release date.
 222          */
 223         day = KERNEL_RELEASE_DATE % 100;
 224         month = (       (       KERNEL_RELEASE_DATE
 225                                 % 10000
 226                                 )
 227                                 - day
 228                         )
 229                         / 100;
 230         year =
 231                 (       KERNEL_RELEASE_DATE
 232                         - (month * 100)
 233                         - day
 234                         )
 235                         / 10000;
 236         if (FALSE == quiet)
 237         {
 238                 printf ( "\n\
 239 ReactOS Build Number Generator\n\n\
 240 Last release: %4d-%02d-%02d\n",
 241                         year,
 242                         month,
 243                         day
 244                         );
 245         }
 246 #ifdef DBG
 247         tm_dump ("t0", & t0_tm);
 248 #endif
 249         t0_tm.tm_year = (year - 1900);
 250         t0_tm.tm_mon = --month; /* 0-11 */
 251         t0_tm.tm_mday = day;
 252         t0_tm.tm_hour = 0;
 253         t0_tm.tm_min = 0;
 254         t0_tm.tm_sec = 1;
 255         t0_tm.tm_isdst = -1;
 256
 257 #ifdef DBG
 258         tm_dump ("t0", & t0_tm);
 259 #endif
 260
 261         if (-1 == (t0 = mktime (& t0_tm)))
 262         {
 263                 fprintf (
 264                         stderr,
 265                         "%s: can not convert release date!\n",
 266                         argv[0]
 267                         );
 268                 return EXIT_FAILURE;
 269         }
 270
 271         time (& t1); /* current build time */
 272         t1_tm = gmtime (& t1);
 273
 274 #ifdef DBG
 275         tm_dump ("t1", t1_tm);
 276 #endif
 277         t1_tm->tm_year +=
 278                 (t1_tm->tm_year < 70)
 279                 ? 2000
 280                 : 1900;
 281 #ifdef DBG
 282         tm_dump ("t1", t1_tm);
 283 #endif
 284         if (FALSE == quiet)
 285         {
 286                 printf (
 287                         "Current date: %4d-%02d-%02d\n\n",
 288                         t1_tm->tm_year,
 289                         (t1_tm->tm_mon + 1),
 290                         t1_tm->tm_mday
 291                         );
 292         }
 293         /*
 294          * Compute delta days.
 295          */
 296         build = elapsed_days (t1, t0);
 297
 298         if (FALSE == quiet)
 299         {
 300                 printf (
 301                         "Build number: %d (elapsed days since last release)\n",
 302                         build
 303                         );
 304                 printf (
 305                         "ROS Version : %d.%d.%d.%d\n",
 306                         KERNEL_VERSION_MAJOR,
 307                         KERNEL_VERSION_MINOR,
 308                         KERNEL_VERSION_PATCH_LEVEL,
 309                         build
 310                         );
 311         }
 312         /*
 313          * (Over)write the include file, unless
 314          * the user switched on -p.
 315          */
 316         if (FALSE == print_only)
 317         {
 318                 write_h (build);
 319         }
 320         else
 321         {
 322                 printf ("%s: no code generated", argv [0]);
 323         }
 324
 325         return EXIT_SUCCESS;
 326 }
 327
 328
 329 /* EOF */