New file in g77 front end.

From-SVN: r14986

diff --git a/gcc/f/ansify.c b/gcc/f/ansify.c
new file mode 100644 (file)
index 0000000..c73cc42
--- /dev/null
+++ b/gcc/f/ansify.c
@@ -0,0 +1,208 @@
+/* ansify.c
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   Contributed by James Craig Burley (burley@gnu.ai.mit.edu).
+
+This file is part of GNU Fortran.
+
+GNU Fortran 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.
+
+GNU Fortran 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 GNU Fortran; see the file COPYING.  If not, write to
+the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.  */
+
+/* From f/proj.h, which uses #error -- not all C compilers
+   support that, and we want *this* program to be compilable
+   by pretty much any C compiler.  */
+
+#include "assert.j"            /* Use gcc's assert.h. */
+#include <stdio.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+
+typedef enum
+  {
+#if !defined(false) || !defined(true)
+    false = 0, true = 1,
+#endif
+#if !defined(FALSE) || !defined(TRUE)
+    FALSE = 0, TRUE = 1,
+#endif
+    Doggone_Trailing_Comma_Dont_Work = 1
+  } bool;
+
+#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
+
+#define die_unless(c) \
+  do if (!(c)) \
+    { \
+      fprintf (stderr, "%s:%lu: " #c "\n", argv[1], lineno); \
+      die (); \
+    } \
+  while(0)
+
+static void
+die ()
+{
+  exit (1);
+}
+
+int
+main(int argc, char **argv)
+{
+  int c;
+  static unsigned long lineno = 1;
+
+  die_unless (argc == 2);
+
+  printf ("\
+/* This file is automatically generated from `%s',\n\
+   which you should modify instead.  */\n\
+# 1 \"%s\"\n\
+",
+         argv[1], argv[1]);
+
+  while ((c = getchar ()) != EOF)
+    {
+      switch (c)
+       {
+       default:
+         putchar (c);
+         break;
+
+       case '\n':
+         ++lineno;
+         putchar (c);
+         break;
+
+       case '"':
+         putchar (c);
+         for (;;)
+           {
+             c = getchar ();
+             die_unless (c != EOF);
+             switch (c)
+               {
+               case '"':
+                 putchar (c);
+                 goto next_char;
+
+               case '\n':
+                 putchar ('\\');
+                 putchar ('n');
+                 putchar ('\\');
+                 putchar ('\n');
+                 ++lineno;
+                 break;
+
+               case '\\':
+                 putchar (c);
+                 c = getchar ();
+                 die_unless (c != EOF);
+                 putchar (c);
+                 if (c == '\n')
+                   ++lineno;
+                 break;
+                 
+               default:
+                 putchar (c);
+                 break;
+               }
+           }
+         break;
+
+       case '\'':
+         putchar (c);
+         for (;;)
+           {
+             c = getchar ();
+             die_unless (c != EOF);
+             switch (c)
+               {
+               case '\'':
+                 putchar (c);
+                 goto next_char;
+                 
+               case '\n':
+                 putchar ('\\');
+                 putchar ('n');
+                 putchar ('\\');
+                 putchar ('\n');
+                 ++lineno;
+                 break;
+                 
+               case '\\':
+                 putchar (c);
+                 c = getchar ();
+                 die_unless (c != EOF);
+                 putchar (c);
+                 if (c == '\n')
+                   ++lineno;
+                 break;
+                 
+               default:
+                 putchar (c);
+                 break;
+               }
+           }
+         break;
+
+       case '/':
+         putchar (c);
+         c = getchar ();
+         putchar (c);
+         if (c != '*')
+           break;
+         for (;;)
+           {
+             c = getchar ();
+             die_unless (c != EOF);
+
+             switch (c)
+               {
+               case '\n':
+                 ++lineno;
+                 putchar (c);
+                 break;
+                 
+               case '*':
+                 c = getchar ();
+                 die_unless (c != EOF);
+                 if (c == '/')
+                   {
+                     putchar ('*');
+                     putchar ('/');
+                     goto next_char;
+                   }
+                 if (c == '\n')
+                   {
+                     ++lineno;
+                     putchar (c);
+                   }
+                 break;
+                 
+               default:
+                 /* Don't bother outputting content of comments.  */
+                 break;
+               }
+           }
+         break;
+       }
+      
+    next_char:
+      ;
+    }
+
+  die_unless (c == EOF);
+
+  return 0;
+}