tests: enhance AT_SYNCLINES_COMPILE.

[bison.git] / src / files.c

diff --git a/src/files.c b/src/files.c
index 806b57290e0eb3ebbb617ef1df39cb41936ac589..71d3b042ce1fbea2d86b825f3185d91f39b0422e 100644 (file)
--- a/src/files.c
+++ b/src/files.c
@@ -1,7 +1,7 @@
 /* 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, 2000-2010 Free Software
+   Foundation, Inc.
 
    This file is part of Bison, the GNU Compiler Compiler.
 
@@ -45,6 +45,7 @@ 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 *spec_xml_file = NULL;      /* for -x. */
 char *spec_defines_file = NULL;  /* for --defines. */
 char *parser_file_name;
 
@@ -135,15 +136,6 @@ 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)
@@ -266,7 +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)
@@ -325,13 +319,21 @@ compute_output_file_names (void)
     {
       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)
     {
-      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);
@@ -340,16 +342,37 @@ compute_output_file_names (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
@@ -358,6 +381,7 @@ 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);