X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/4502eadc2fbdd6efe2e4702cb3993cac83a59615..4b7a4c1b1c8c18e9ad2517c117442b9b7d7e671a:/src/files.c

diff --git a/src/files.c b/src/files.c
index 934e1143..41e2453b 100644
--- a/src/files.c
+++ b/src/files.c
@@ -1,24 +1,22 @@
 /* Open and close files for Bison.
 
    Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004,
-   2005, 2006 Free Software Foundation, Inc.
+   2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
-   Bison 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 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 3 of the License, or
+   (at your option) any later version.
 
-   Bison 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.
+   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 Bison; see the file COPYING.  If not, write to the Free
-   Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-   02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 #include "system.h"
@@ -35,9 +33,6 @@
 #include "getargs.h"
 #include "gram.h"
 
-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
    %directive vs --option leaves precedence to the options by deciding
@@ -50,9 +45,14 @@ char const *spec_file_prefix = NULL;   /* for -b. */
 char const *spec_name_prefix = NULL;   /* for -p. */
 char *spec_verbose_file = NULL;  /* for --verbose. */
 char *spec_graph_file = NULL;    /* for -g. */
+char *spec_xml_file = NULL;      /* for -x. */
 char *spec_defines_file = NULL;  /* for --defines. */
 char *parser_file_name;
 
+/* All computed output file names.  */
+static char **file_names = NULL;
+static int file_names_count = 0;
+
 uniqstr grammar_file = NULL;
 uniqstr current_file = NULL;
 
@@ -72,7 +72,7 @@ uniqstr current_file = NULL;
    empty string (meaning the current directory); otherwise it is
    `dir/'.  */
 
-static char *all_but_ext;
+char *all_but_ext;
 static char *all_but_tab_ext;
 char *dir_prefix;
 
@@ -136,25 +136,24 @@ xfclose (FILE *ptr)
 | Compute ALL_BUT_EXT, ALL_BUT_TAB_EXT and output files extensions. |
 `------------------------------------------------------------------*/
 
-/* In the string S, replace all characters FROM by TO.  */
-static void
-tr (char *s, char from, char to)
-{
-  for (; *s; s++)
-    if (*s == from)
-      *s = to;
-}
-
 /* Compute extensions from the grammar file extension.  */
 static void
 compute_exts_from_gf (const char *ext)
 {
-  src_extension = xstrdup (ext);
-  header_extension = xstrdup (ext);
-  tr (src_extension, 'y', 'c');
-  tr (src_extension, 'Y', 'C');
-  tr (header_extension, 'y', 'h');
-  tr (header_extension, 'Y', 'H');
+  if (strcmp (ext, ".y") == 0)
+    {
+      src_extension = xstrdup (language->src_extension);
+      header_extension = xstrdup (language->header_extension);
+    }
+  else
+    {
+      src_extension = xstrdup (ext);
+      header_extension = xstrdup (ext);
+      tr (src_extension, 'y', 'c');
+      tr (src_extension, 'Y', 'C');
+      tr (header_extension, 'y', 'h');
+      tr (header_extension, 'Y', 'H');
+    }
 }
 
 /* Compute extensions from the given c source file extension.  */
@@ -259,7 +258,9 @@ compute_file_name_parts (void)
       if (spec_file_prefix)
 	{
 	  /* If --file-prefix=foo was specified, ALL_BUT_TAB_EXT = `foo'.  */
-	  dir_prefix = xstrndup (grammar_file, base - grammar_file);
+	  dir_prefix =
+            xstrndup (spec_file_prefix,
+                      last_component (spec_file_prefix) - spec_file_prefix);
 	  all_but_tab_ext = xstrdup (spec_file_prefix);
 	}
       else if (yacc_flag)
@@ -277,7 +278,10 @@ compute_file_name_parts (void)
 	    xstrndup (base, (strlen (base) - (ext ? strlen (ext) : 0)));
 	}
 
-      all_but_ext = concat2 (all_but_tab_ext, TAB_EXT);
+      if (language->add_tab)
+        all_but_ext = concat2 (all_but_tab_ext, TAB_EXT);
+      else
+        all_but_ext = xstrdup (all_but_tab_ext);
 
       /* Compute the extensions from the grammar file name.  */
       if (ext && !yacc_flag)
@@ -292,11 +296,6 @@ compute_file_name_parts (void)
 void
 compute_output_file_names (void)
 {
-  char const *name[4];
-  int i;
-  int j;
-  int names = 0;
-
   compute_file_name_parts ();
 
   /* If not yet done. */
@@ -305,7 +304,7 @@ compute_output_file_names (void)
   if (!header_extension)
     header_extension = xstrdup (".h");
 
-  name[names++] = parser_file_name =
+  parser_file_name =
     (spec_outfile
      ? xstrdup (spec_outfile)
      : concat2 (all_but_ext, src_extension));
@@ -314,39 +313,63 @@ compute_output_file_names (void)
     {
       if (! spec_defines_file)
 	spec_defines_file = concat2 (all_but_ext, header_extension);
-      name[names++] = spec_defines_file;
     }
 
   if (graph_flag)
     {
       if (! spec_graph_file)
 	spec_graph_file = concat2 (all_but_tab_ext, ".dot");
-      name[names++] = spec_graph_file;
+      output_file_name_check (spec_graph_file);
     }
 
-  if (report_flag)
+  if (xml_flag)
     {
-      spec_verbose_file = concat2 (all_but_tab_ext, OUTPUT_EXT);
-      name[names++] = spec_verbose_file;
+      if (! spec_xml_file)
+	spec_xml_file = concat2 (all_but_tab_ext, ".xml");
+      output_file_name_check (spec_xml_file);
     }
 
-  for (j = 0; j < names; j++)
-    for (i = 0; i < j; i++)
-      if (strcmp (name[i], name[j]) == 0)
-	warn (_("conflicting outputs to file %s"), quote (name[i]));
+  if (report_flag)
+    {
+      if (!spec_verbose_file)
+        spec_verbose_file = concat2 (all_but_tab_ext, OUTPUT_EXT);
+      output_file_name_check (spec_verbose_file);
+    }
 
-  free (all_but_ext);
   free (all_but_tab_ext);
   free (src_extension);
   free (header_extension);
 }
 
+void
+output_file_name_check (char const *file_name)
+{
+  if (0 == strcmp (file_name, grammar_file))
+    fatal (_("refusing to overwrite the input file %s"), quote (file_name));
+  {
+    int i;
+    for (i = 0; i < file_names_count; i++)
+      if (0 == strcmp (file_names[i], file_name))
+        warn (_("conflicting outputs to file %s"), quote (file_name));
+  }
+  file_names = xnrealloc (file_names, ++file_names_count, sizeof *file_names);
+  file_names[file_names_count-1] = xstrdup (file_name);
+}
+
 void
 output_file_names_free (void)
 {
+  free (all_but_ext);
   free (spec_verbose_file);
   free (spec_graph_file);
+  free (spec_xml_file);
   free (spec_defines_file);
   free (parser_file_name);
   free (dir_prefix);
+  {
+    int i;
+    for (i = 0; i < file_names_count; i++)
+      free (file_names[i]);
+  }
+  free (file_names);
 }