gcc/f/ansify.c

   1 /* ansify.c
   2    Copyright (C) 1997 Free Software Foundation, Inc.
   3    Contributed by James Craig Burley.
   4
   5 This file is part of GNU Fortran.
   6
   7 GNU Fortran 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 2, or (at your option)
  10 any later version.
  11
  12 GNU Fortran 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 GNU Fortran; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, USA.  */
  21
  22 /* From f/proj.h, which uses #error -- not all C compilers
  23    support that, and we want *this* program to be compilable
  24    by pretty much any C compiler.  */
  25 #include "hconfig.j"
  26 #include "system.j"
  27 #include "assert.j"
  28 #if HAVE_STDDEF_H
  29 #include <stddef.h>
  30 #endif
  31
  32 typedef enum
  33   {
  34 #if !defined(false) || !defined(true)
  35     false = 0, true = 1,
  36 #endif
  37 #if !defined(FALSE) || !defined(TRUE)
  38     FALSE = 0, TRUE = 1,
  39 #endif
  40     Doggone_Trailing_Comma_Dont_Work = 1
  41   } bool;
  42
  43 #define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
  44
  45 #define die_unless(c) \
  46   do if (!(c)) \
  47     { \
  48       fprintf (stderr, "%s:%lu: " #c "\n", argv[1], lineno); \
  49       die (); \
  50     } \
  51   while(0)
  52
  53 static void
  54 die (void)
  55 {
  56   exit (1);
  57 }
  58
  59 int
  60 main(int argc, char **argv)
  61 {
  62   int c;
  63   static unsigned long lineno = 1;
  64
  65   die_unless (argc == 2);
  66
  67   printf ("\
  68 /* This file is automatically generated from `%s',\n\
  69    which you should modify instead.  */\n\
  70 # 1 \"%s\"\n\
  71 ",
  72           argv[1], argv[1]);
  73
  74   while ((c = getchar ()) != EOF)
  75     {
  76       switch (c)
  77         {
  78         default:
  79           putchar (c);
  80           break;
  81
  82         case '\n':
  83           ++lineno;
  84           putchar (c);
  85           break;
  86
  87         case '"':
  88           putchar (c);
  89           for (;;)
  90             {
  91               c = getchar ();
  92               die_unless (c != EOF);
  93               switch (c)
  94                 {
  95                 case '"':
  96                   putchar (c);
  97                   goto next_char;
  98
  99                 case '\n':
 100                   putchar ('\\');
 101                   putchar ('n');
 102                   putchar ('\\');
 103                   putchar ('\n');
 104                   ++lineno;
 105                   break;
 106
 107                 case '\\':
 108                   putchar (c);
 109                   c = getchar ();
 110                   die_unless (c != EOF);
 111                   putchar (c);
 112                   if (c == '\n')
 113                     ++lineno;
 114                   break;
 115
 116                 default:
 117                   putchar (c);
 118                   break;
 119                 }
 120             }
 121           break;
 122
 123         case '\'':
 124           putchar (c);
 125           for (;;)
 126             {
 127               c = getchar ();
 128               die_unless (c != EOF);
 129               switch (c)
 130                 {
 131                 case '\'':
 132                   putchar (c);
 133                   goto next_char;
 134
 135                 case '\n':
 136                   putchar ('\\');
 137                   putchar ('n');
 138                   putchar ('\\');
 139                   putchar ('\n');
 140                   ++lineno;
 141                   break;
 142
 143                 case '\\':
 144                   putchar (c);
 145                   c = getchar ();
 146                   die_unless (c != EOF);
 147                   putchar (c);
 148                   if (c == '\n')
 149                     ++lineno;
 150                   break;
 151
 152                 default:
 153                   putchar (c);
 154                   break;
 155                 }
 156             }
 157           break;
 158
 159         case '/':
 160           putchar (c);
 161           c = getchar ();
 162           putchar (c);
 163           if (c != '*')
 164             break;
 165           for (;;)
 166             {
 167               c = getchar ();
 168               die_unless (c != EOF);
 169
 170               switch (c)
 171                 {
 172                 case '\n':
 173                   ++lineno;
 174                   putchar (c);
 175                   break;
 176
 177                 case '*':
 178                   c = getchar ();
 179                   die_unless (c != EOF);
 180                   if (c == '/')
 181                     {
 182                       putchar ('*');
 183                       putchar ('/');
 184                       goto next_char;
 185                     }
 186                   if (c == '\n')
 187                     {
 188                       ++lineno;
 189                       putchar (c);
 190                     }
 191                   break;
 192
 193                 default:
 194                   /* Don't bother outputting content of comments.  */
 195                   break;
 196                 }
 197             }
 198           break;
 199         }
 200
 201     next_char:
 202       ;
 203     }
 204
 205   die_unless (c == EOF);
 206
 207   return 0;
 208 }