Initial revision

1 files changed, 137 insertions, 0 deletions

diff --git a/utils/showtrans.c b/utils/showtrans.c
new file mode 100644
index 00000000..88e9b95f
--- /dev/null
+++ b/utils/showtrans.c
@@ -0,0 +1,137 @@
+/* Show files' passive translators.
+
+   Copyright (C) 1995 Free Software Foundation, Inc.
+
+   Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+   This program 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 2, or (at
+   your option) any later version.
+
+   This program 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 this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <hurd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <error.h>
+#include <argz.h>
+
+/* ---------------------------------------------------------------- */
+
+#define USAGE "Usage: %s [OPTION...] FILE...\n" 
+
+#define SHORT_OPTIONS "hs?"
+
+static void
+usage(status)
+     int status;
+{
+  if (status != 0)
+    fprintf(stderr, "Try `%s --help' for more information.\n",
+	      program_invocation_name);
+  else
+    {
+      printf(USAGE, program_invocation_name);
+      printf("\
+\n\
+  -h, --no-header            Don't display `FILENAME: ' before translators\n\
+  -s, --silent               No output; useful when checking error status\n\
+      --help                 Give this help list\n\
+");
+    }
+
+  exit(status);
+}
+
+static struct option options[] =
+{
+  {"no-header", no_argument, 0, 'h'},
+  {"silent", no_argument, 0, 's'},
+  {"quiet", no_argument, 0, 's'},
+  {"help", no_argument, 0, '?'},
+  {0, 0, 0, 0}
+};
+
+/* ---------------------------------------------------------------- */
+
+void 
+main(int argc, char *argv[])
+{
+  int opt;
+  /* The default exits status -- changed to 0 if we find any translators.  */
+  int status = 1;
+  /* Some option flags.  */
+  int print_header = 1, silent = 0;
+
+  /* Parse our options...  */
+  while ((opt = getopt_long(argc, argv, "+" SHORT_OPTIONS, options, 0)) != EOF)
+    switch (opt)
+      {
+      case 'h': print_header = 0; break;
+      case 's': silent = 1; break;
+      case '?': usage(0); break;
+      default:  usage(-1); break;
+      }
+
+  while (optind != argc)
+    {
+      char *node_name = argv[optind++];
+      file_t node = file_name_lookup(node_name, O_NOTRANS, 0);
+
+      if (node == MACH_PORT_NULL)
+	error(0, errno, "%s", node_name);
+      else
+	{
+	  char buf[1024], *trans = buf;
+	  int trans_len = sizeof(buf);
+	  error_t err = file_get_translator(node, &trans, &trans_len);
+
+	  switch (err)
+	    {
+	    case 0:
+	      /* Make the '\0's in TRANS printable.  */
+	      argz_stringify(trans, trans_len);
+
+	      if (!silent)
+		if (print_header)
+		  printf("%s: %s\n", node_name, trans);
+		else
+		  puts(trans);
+
+	      if (trans != buf)
+		vm_deallocate(mach_task_self(),
+			      (vm_address_t)trans, trans_len);
+
+	      status = 0;
+
+	      break;
+
+	    case EINVAL:
+	      /* NODE just doesn't have a translator.  */
+	      if (!silent && print_header)
+		puts(node_name);
+	      break;
+
+	    default:
+	      error(0, err, "%s", node_name);
+	    }
+
+	  mach_port_deallocate(mach_task_self(), node);
+	}
+    }
+
+  exit(status);
+}