* m4/prereq.m4: Update, from Coreutils 4.5.1.

[bison.git] / src / files.c

diff --git a/src/files.c b/src/files.c
index 5240c4102f378fe5364aa3e9cb27c67f18c52fb1..5073f04f5780d518f1f929a1f3d859de82f58c61 100644 (file)
--- a/src/files.c
+++ b/src/files.c
@@ -1,5 +1,6 @@
 /* Open and close files for bison,
-   Copyright 1984, 1986, 1989, 1992, 2000, 2001 Free Software Foundation, Inc.
+   Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002
+   Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -31,9 +32,8 @@ const char *base_name PARAMS ((char const *name));
 
 FILE *finput = NULL;
 
-struct obstack action_obstack;
-struct obstack attrs_obstack;
-struct obstack output_obstack;
+struct obstack pre_prologue_obstack;
+struct obstack post_prologue_obstack;
 
 /* Initializing some values below (such SPEC_NAME_PREFIX to `yy') is
    tempting, but don't do that: for the time being our handling of the
@@ -51,18 +51,20 @@ char *spec_defines_file = NULL; /* for --defines. */
 char *parser_file_name = NULL;
 
 char *infile = NULL;
-char *attrsfile = NULL;
 
 static char *full_base_name = NULL;
+
+/* Prefix used to generate output file names.  */
 char *short_base_name = NULL;
 
+/* Infix used to generate output file names (i.e., `.tab', or `_tab',
+   or `').  */
+char *output_infix = NULL;
+
 /* C source file extension (the parser source).  */
 const char *src_extension = NULL;
 /* Header file extension (if option ``-d'' is specified).  */
 const char *header_extension = NULL;
-
-/* Should we insert '.tab' in yacc-compatible parsers?  */
-int tab_extension = 0;
 \f
 
 /*--------------------------.
@@ -97,49 +99,6 @@ stringappend (const char *string1, const char *string2)
   return res;
 }
 
-
-/*-----------------------------------------------------------------.
-| Computes the macro name used to avoid double inclusion in the    |
-| header of the parser and store it in header_macro_name.  Be sure |
-| to produce valid CPP names (don't start with digit, remain       |
-| alphanumerical + underscore).                                    |
-`-----------------------------------------------------------------*/
-
-char *
-compute_header_macro (void)
-{
-  const char *prefix = "BISON_";
-  char *macro_name, *cp;
-
-  if (spec_defines_file)
-    {
-      macro_name = XMALLOC (char,
-                           strlen (prefix) +
-                           strlen (spec_defines_file) + 1);
-      cp = stpcpy (macro_name, prefix);
-      cp = stpcpy (cp, spec_defines_file);
-    }
-  else
-    {
-      macro_name = XMALLOC (char,
-                           strlen (prefix) +
-                           strlen (full_base_name) +
-                           strlen (header_extension) + 1);
-      cp = stpcpy (macro_name, prefix);
-      cp = stpcpy (cp, full_base_name);
-      cp = stpcpy (cp, header_extension);
-    }
-
-  for (cp = macro_name; *cp; ++cp)
-    if (islower (*cp))
-      *cp = toupper (*cp);
-    else if (!isalnum (*cp))
-      *cp = '_';
-
-  return macro_name;
-}
-
-
 /*-----------------------------------------------------------------.
 | Try to open file NAME with mode MODE, and print an error message |
 | if fails.                                                        |
@@ -188,6 +147,7 @@ skeleton_find (const char *envvar, const char *skeleton_name)
   const char *res = getenv (envvar);
 
 #if defined (MSDOS) || defined (_WIN32)
+  const char *cp = getenv ("INIT");
   if (!res)
     {
       /* Skeleton file name without path */
@@ -200,7 +160,6 @@ skeleton_find (const char *envvar, const char *skeleton_name)
         ++skel_name;
 
       /* File doesn't exist in current directory; try in INIT directory.  */
-      const char *cp = getenv ("INIT");
       if (cp)
        {
          res = XMALLOC (char, strlen (cp) + strlen (skel_name) + 2);
@@ -347,14 +306,16 @@ compute_base_names (void)
       full_base_name =
        xstrndup (spec_outfile,
                  (strlen (spec_outfile) - (ext ? strlen (ext) : 0)));
+
       /* The short base name goes up to TAB, excluding it.  */
       short_base_name =
        xstrndup (spec_outfile,
                  (strlen (spec_outfile)
                   - (tab ? strlen (tab) : (ext ? strlen (ext) : 0))));
 
-      /* Do we have a tab part? */
-      tab_extension = !!tab;
+      if (tab)
+       output_infix = xstrndup (tab,
+                                (strlen (tab) - (ext ? strlen (ext) : 0)));
 
       if (ext)
        compute_exts_from_src (ext);
@@ -380,15 +341,16 @@ compute_base_names (void)
       else
        {
          /* Otherwise, the short base name is computed from the input
-            grammar: `foo.yy' => `foo'.  */
+            grammar: `foo/bar.yy' => `bar'.  */
          filename_split (infile, &base, &tab, &ext);
          short_base_name =
-           xstrndup (infile,
-                     (strlen (infile) - (ext ? strlen (ext) : 0)));
+           xstrndup (base,
+                     (strlen (base) - (ext ? strlen (ext) : 0)));
        }
 
       /* In these cases, always append `.tab'. */
-      tab_extension = 1;
+      output_infix = xstrdup (EXT_TAB);
+
       full_base_name = XMALLOC (char,
                                strlen (short_base_name)
                                + strlen (EXT_TAB) + 1);
@@ -396,7 +358,7 @@ compute_base_names (void)
 
       /* Computes the extensions from the grammar file name.  */
       filename_split (infile, &base, &tab, &ext);
-      if (ext)
+      if (ext && !yacc_flag)
        compute_exts_from_gf (ext);
     }
 }
@@ -410,15 +372,15 @@ compute_output_file_names (void)
 {
   compute_base_names ();
 
-  parser_file_name =
-    spec_outfile ? spec_outfile : stringappend (full_base_name, src_extension);
-
   /* If not yet done. */
   if (!src_extension)
     src_extension = ".c";
   if (!header_extension)
     header_extension = ".h";
 
+  parser_file_name =
+    spec_outfile ? spec_outfile : stringappend (full_base_name, src_extension);
+
   /* It the defines filename if not given, we create it.  */
   if (!spec_defines_file)
     spec_defines_file = stringappend (full_base_name, header_extension);
@@ -428,6 +390,4 @@ compute_output_file_names (void)
     spec_graph_file = stringappend (short_base_name, ".vcg");
 
   spec_verbose_file = stringappend (short_base_name, EXT_OUTPUT);
-
-  attrsfile = stringappend (short_base_name, EXT_STYPE_H);
 }