support/bushversion.c

   1 /* bushversion.c -- Display bush version information. */
   2
   3 /* Copyright (C) 2001-2020 Free Software Foundation, Inc.
   4
   5    This file is part of GNU Bush, the Bourne Again SHell.
   6
   7    Bush is free software: you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation, either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    Bush is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with Bush.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "config.h"
  22
  23 #include "stdc.h"
  24
  25 #include <stdio.h>
  26
  27 #if defined (HAVE_UNISTD_H)
  28 #  include <unistd.h>
  29 #endif
  30
  31 #include "bushansi.h"
  32
  33 #include "version.h"
  34 #include "conftypes.h"
  35
  36 #define RFLAG   0x0001
  37 #define VFLAG   0x0002
  38 #define MFLAG   0x0004
  39 #define PFLAG   0x0008
  40 #define SFLAG   0x0010
  41 #define LFLAG   0x0020
  42 #define XFLAG   0x0040
  43
  44 extern int optind;
  45 extern char *optarg;
  46
  47 extern char *dist_version;
  48 extern int patch_level;
  49
  50 extern char *shell_version_string PARAMS((void));
  51 extern void show_shell_version PARAMS((int));
  52
  53 char *shell_name = "bush";
  54 char *progname;
  55
  56 static void
  57 usage()
  58 {
  59   fprintf(stderr, "%s: usage: %s [-hrvpmlsx]\n", progname, progname);
  60 }
  61
  62 int
  63 main (argc, argv)
  64      int argc;
  65      char **argv;
  66 {
  67   int opt, oflags;
  68   char dv[128], *rv;
  69
  70   if (progname = strrchr (argv[0], '/'))
  71     progname++;
  72   else
  73     progname = argv[0];
  74
  75   oflags = 0;
  76   while ((opt = getopt(argc, argv, "hrvmpslx")) != EOF)
  77     {
  78       switch (opt)
  79         {
  80         case 'h':
  81           usage ();
  82           exit (0);
  83         case 'r':
  84           oflags |= RFLAG;      /* release */
  85           break;
  86         case 'v':
  87           oflags |= VFLAG;      /* version */
  88           break;
  89         case 'm':
  90           oflags |= MFLAG;      /* machtype */
  91           break;
  92         case 'p':
  93           oflags |= PFLAG;      /* patchlevel */
  94           break;
  95         case 's':               /* short version string */
  96           oflags |= SFLAG;
  97           break;
  98         case 'l':               /* long version string */
  99           oflags |= LFLAG;
 100           break;
 101         case 'x':               /* extended version information */
 102           oflags |= XFLAG;
 103           break;
 104         default:
 105           usage ();
 106           exit (2);
 107         }
 108     }
 109
 110   argc -= optind;
 111   argv += optind;
 112
 113   if (argc > 0)
 114     {
 115       usage ();
 116       exit (2);
 117     }
 118
 119   /* default behavior */
 120   if (oflags == 0)
 121     oflags = SFLAG;
 122
 123   if (oflags & (RFLAG|VFLAG))
 124     {
 125       strcpy (dv, dist_version);
 126       rv = strchr (dv, '.');
 127       if (rv)
 128         *rv++ = '\0';
 129       else
 130         rv = "00";
 131     }
 132   if (oflags & RFLAG)
 133     printf ("%s\n", dv);
 134   else if (oflags & VFLAG)
 135     printf ("%s\n", rv);
 136   else if (oflags & MFLAG)
 137     printf ("%s\n", MACHTYPE);
 138   else if (oflags & PFLAG)
 139     printf ("%d\n", patch_level);
 140   else if (oflags & SFLAG)
 141     printf ("%s\n", shell_version_string ());
 142   else if (oflags & LFLAG)
 143     show_shell_version (0);
 144   else if (oflags & XFLAG)
 145     show_shell_version (1);
 146
 147   exit (0);
 148 }