1 files changed, 148 insertions, 0 deletions
diff --git a/support/bashversion.c b/support/bashversion.c
new file mode 100644
index 0000000..ad02d46
--- /dev/null
+++ b/support/bashversion.c
@@ -0,0 +1,148 @@
+/* bashversion.c -- Display bash version information. */
+
+/* Copyright (C) 2001-2021 Free Software Foundation, Inc.
+
+   This file is part of GNU Bash, the Bourne Again SHell.
+
+   Bash 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 3 of the License, or
+   (at your option) any later version.
+
+   Bash 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 Bash.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "config.h"
+
+#include "stdc.h"
+
+#include <stdio.h>
+
+#if defined (HAVE_UNISTD_H)
+#  include <unistd.h>
+#endif
+
+#include "bashansi.h"
+
+#include "version.h"
+#include "conftypes.h"
+
+#define RFLAG	0x0001
+#define VFLAG	0x0002
+#define MFLAG	0x0004
+#define PFLAG	0x0008
+#define SFLAG	0x0010
+#define LFLAG	0x0020
+#define XFLAG	0x0040
+
+extern int optind;
+extern char *optarg;
+
+extern char *dist_version;
+extern int patch_level;
+
+extern char *shell_version_string PARAMS((void));
+extern void show_shell_version PARAMS((int));
+
+char *shell_name = "bash";
+char *progname;
+
+static void
+usage()
+{
+  fprintf(stderr, "%s: usage: %s [-hrvpmlsx]\n", progname, progname);
+}
+
+int
+main (argc, argv)
+     int argc;
+     char **argv;
+{
+  int opt, oflags;
+  char dv[128], *rv;
+
+  if (progname = strrchr (argv[0], '/'))
+    progname++;
+  else
+    progname = argv[0];
+
+  oflags = 0;
+  while ((opt = getopt(argc, argv, "hrvmpslx")) != EOF)
+    {
+      switch (opt)
+	{
+	case 'h':
+	  usage ();
+	  exit (0);
+	case 'r':
+	  oflags |= RFLAG;	/* release */
+	  break;
+	case 'v':
+	  oflags |= VFLAG;	/* version */
+	  break;
+	case 'm':
+	  oflags |= MFLAG;	/* machtype */
+	  break;
+	case 'p':
+	  oflags |= PFLAG;	/* patchlevel */
+	  break;
+	case 's':		/* short version string */
+	  oflags |= SFLAG;
+	  break;
+	case 'l':		/* long version string */
+	  oflags |= LFLAG;
+	  break;
+	case 'x':		/* extended version information */
+	  oflags |= XFLAG;
+	  break;
+	default:
+	  usage ();
+	  exit (2);
+	}
+    }
+
+  argc -= optind;
+  argv += optind;
+
+  if (argc > 0)
+    {
+      usage ();
+      exit (2);
+    }
+
+  /* default behavior */  
+  if (oflags == 0)
+    oflags = SFLAG;
+
+  if (oflags & (RFLAG|VFLAG))
+    {
+      strcpy (dv, dist_version);
+      rv = strchr (dv, '.');
+      if (rv)
+        *rv++ = '\0';
+      else
+        rv = "00";
+    }
+  if (oflags & RFLAG)
+    printf ("%s\n", dv);
+  else if (oflags & VFLAG)
+    printf ("%s\n", rv);
+  else if (oflags & MFLAG)
+    printf ("%s\n", MACHTYPE);
+  else if (oflags & PFLAG)
+    printf ("%d\n", patch_level);
+  else if (oflags & SFLAG)
+    printf ("%s\n", shell_version_string ());
+  else if (oflags & LFLAG)
+    show_shell_version (0);
+  else if (oflags & XFLAG)
+    show_shell_version (1);
+
+  exit (0);
+}