support/mksignames.c

   1 /* mksignames.c -- Create and write `signames.h', which contains an array of
   2    signal names. */
   3
   4 /* Copyright (C) 1992-2020 Free Software Foundation, Inc.
   5
   6    This file is part of GNU Bush, the Bourne Again SHell.
   7
   8    Bush 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 3 of the License, or
  11    (at your option) any later version.
  12
  13    Bush 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 Bush.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include <config.h>
  23
  24 #include <sys/types.h>
  25 #include <signal.h>
  26
  27 #include <stdio.h>
  28 #if defined (HAVE_STDLIB_H)
  29 #  include <stdlib.h>
  30 #else
  31 #  include "ansi_stdlib.h"
  32 #endif /* HAVE_STDLIB_H */
  33
  34 /* Duplicated from signames.c */
  35 #if !defined (NSIG)
  36 #  define NSIG 64
  37 #endif
  38
  39 #define LASTSIG NSIG+2
  40
  41 /* Imported from signames.c */
  42 extern void initialize_signames ();
  43 extern char *signal_names[];
  44
  45 char *progname;
  46
  47 void
  48 write_signames (stream)
  49      FILE *stream;
  50 {
  51   register int i;
  52
  53   fprintf (stream, "/* This file was automatically created by %s.\n",
  54            progname);
  55   fprintf (stream, "   Do not edit.  Edit support/mksignames.c instead. */\n\n");
  56   fprintf (stream,
  57            "/* A translation list so we can be polite to our users. */\n");
  58 #if defined (CROSS_COMPILING)
  59   fprintf (stream, "extern char *signal_names[];\n\n");
  60   fprintf (stream, "extern void initialize_signames PARAMS((void));\n\n");
  61 #else
  62   fprintf (stream, "char *signal_names[NSIG + 4] = {\n");
  63
  64   for (i = 0; i <= LASTSIG; i++)
  65     fprintf (stream, "    \"%s\",\n", signal_names[i]);
  66
  67   fprintf (stream, "    (char *)0x0\n");
  68   fprintf (stream, "};\n\n");
  69   fprintf (stream, "#define initialize_signames()\n\n");
  70 #endif
  71 }
  72
  73 int
  74 main (argc, argv)
  75      int argc;
  76      char **argv;
  77 {
  78   char *stream_name;
  79   FILE *stream;
  80
  81   progname = argv[0];
  82
  83   if (argc == 1)
  84     {
  85       stream_name = "stdout";
  86       stream = stdout;
  87     }
  88   else if (argc == 2)
  89     {
  90       stream_name = argv[1];
  91       stream = fopen (stream_name, "w");
  92     }
  93   else
  94     {
  95       fprintf (stderr, "Usage: %s [output-file]\n", progname);
  96       exit (1);
  97     }
  98
  99   if (!stream)
 100     {
 101       fprintf (stderr, "%s: %s: cannot open for writing\n",
 102                progname, stream_name);
 103       exit (2);
 104     }
 105
 106 #if !defined (CROSS_COMPILING)
 107   initialize_signames ();
 108 #endif
 109   write_signames (stream);
 110   exit (0);
 111 }