lalr1.cc: check (and fix) %initial-action exception safety

[bison.git] / src / files.c

diff --git a/src/files.c b/src/files.c
index 06334f8b118e013092b80b1d3ade10c8ce39912b..f698c7e9c6aeea80182affd0a68541c47e987876 100644 (file)
--- a/src/files.c
+++ b/src/files.c
@@ -1,24 +1,22 @@
 /* Open and close files for Bison.
 
 /* Open and close files for Bison.
 

-   Copyright (C) 1984, 1986, 1989, 1992, 2000, 2001, 2002, 2003, 2004,
-   2005, 2006, 2007 Free Software Foundation, Inc.
+   Copyright (C) 1984, 1986, 1989, 1992, 2000-2012 Free Software
+   Foundation, Inc.

 
    This file is part of Bison, the GNU Compiler Compiler.
 
 
    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
 
    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"
 
 #include <config.h>
 #include "system.h"


@@ -27,6 +25,7 @@
 #include <dirname.h>
 #include <get-errno.h>
 #include <quote.h>
 #include <dirname.h>
 #include <get-errno.h>
 #include <quote.h>

+#include <quotearg.h>

 #include <stdio-safer.h>
 #include <xstrndup.h>
 
 #include <stdio-safer.h>
 #include <xstrndup.h>
 


@@ -47,6 +46,7 @@ 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 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;
 
 char *spec_defines_file = NULL;  /* for --defines. */
 char *parser_file_name;
 


@@ -110,7 +110,8 @@ xfopen (const char *name, const char *mode)
 
   ptr = fopen_safer (name, mode);
   if (!ptr)
 
   ptr = fopen_safer (name, mode);
   if (!ptr)

-    error (EXIT_FAILURE, get_errno (), _("cannot open file `%s'"), name);
+    error (EXIT_FAILURE, get_errno (),
+           _("%s: cannot open"), quotearg_colon (name));

 
   return ptr;
 }
 
   return ptr;
 }


@@ -126,7 +127,7 @@ xfclose (FILE *ptr)
     return;
 
   if (ferror (ptr))
     return;
 
   if (ferror (ptr))

-    error (EXIT_FAILURE, 0, _("I/O error"));
+    error (EXIT_FAILURE, 0, _("input/output error"));

 
   if (fclose (ptr) != 0)
     error (EXIT_FAILURE, get_errno (), _("cannot close file"));
 
   if (fclose (ptr) != 0)
     error (EXIT_FAILURE, get_errno (), _("cannot close file"));


@@ -137,15 +138,6 @@ xfclose (FILE *ptr)
 | Compute ALL_BUT_EXT, ALL_BUT_TAB_EXT and output files extensions. |
 `------------------------------------------------------------------*/
 
 | 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)
 /* Compute extensions from the grammar file extension.  */
 static void
 compute_exts_from_gf (const char *ext)


@@ -215,7 +207,7 @@ file_name_split (const char *file_name,
   *base = last_component (file_name);
 
   /* Look for the extension, i.e., look for the last dot. */
   *base = last_component (file_name);
 
   /* Look for the extension, i.e., look for the last dot. */

-  *ext = strrchr (*base, '.');
+  *ext = mbsrchr (*base, '.');

   *tab = NULL;
 
   /* If there is an extension, check if there is a `.tab' part right
   *tab = NULL;
 
   /* If there is an extension, check if there is a `.tab' part right


@@ -268,7 +260,9 @@ compute_file_name_parts (void)
       if (spec_file_prefix)
        {
          /* If --file-prefix=foo was specified, ALL_BUT_TAB_EXT = `foo'.  */
       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)
          all_but_tab_ext = xstrdup (spec_file_prefix);
        }
       else if (yacc_flag)


@@ -327,13 +321,21 @@ compute_output_file_names (void)
     {
       if (! spec_graph_file)
        spec_graph_file = concat2 (all_but_tab_ext, ".dot");
     {
       if (! spec_graph_file)
        spec_graph_file = concat2 (all_but_tab_ext, ".dot");

-      output_file_name_check (spec_graph_file);
+      output_file_name_check (&spec_graph_file);
+    }
+
+  if (xml_flag)
+    {
+      if (! spec_xml_file)
+       spec_xml_file = concat2 (all_but_tab_ext, ".xml");
+      output_file_name_check (&spec_xml_file);

     }
 
   if (report_flag)
     {
     }
 
   if (report_flag)
     {

-      spec_verbose_file = concat2 (all_but_tab_ext, OUTPUT_EXT);
-      output_file_name_check (spec_verbose_file);
+      if (!spec_verbose_file)
+        spec_verbose_file = concat2 (all_but_tab_ext, OUTPUT_EXT);
+      output_file_name_check (&spec_verbose_file);

     }
 
   free (all_but_tab_ext);
     }
 
   free (all_but_tab_ext);


@@ -342,16 +344,37 @@ compute_output_file_names (void)
 }
 
 void
 }
 
 void

-output_file_name_check (char const *file_name)
+output_file_name_check (char **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);
+  bool conflict = false;
+  if (0 == strcmp (*file_name, grammar_file))
+    {
+      complain (_("refusing to overwrite the input file %s"),
+                quote (*file_name));
+      conflict = true;
+    }
+  else
+    {
+      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));
+            conflict = true;
+          }
+    }
+  if (conflict)
+    {
+      free (*file_name);
+      *file_name = strdup ("/dev/null");
+    }
+  else
+    {
+      file_names = xnrealloc (file_names, ++file_names_count,
+                              sizeof *file_names);
+      file_names[file_names_count-1] = xstrdup (*file_name);
+    }

 }
 
 void
 }
 
 void


@@ -360,6 +383,7 @@ output_file_names_free (void)
   free (all_but_ext);
   free (spec_verbose_file);
   free (spec_graph_file);
   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);
   free (spec_defines_file);
   free (parser_file_name);
   free (dir_prefix);