doc/expressions.texi: Correct documentation of MISSING and SYSMIS functions.

[pspp] / src / language / utilities / permissions.c

diff --git a/src/language/utilities/permissions.c b/src/language/utilities/permissions.c
index ad9ffe751732037db38dfc2297cdde2bc58a6886..3f679c150e21968370c2b2d283fcdfb7145f4131 100644 (file)
--- a/src/language/utilities/permissions.c
+++ b/src/language/utilities/permissions.c
@@ -1,5 +1,5 @@
 /* PSPP - a program for statistical analysis.
-   Copyright (C) 2004, 2010 Free Software Foundation, Inc.
+   Copyright (C) 2004, 2010, 2011 Free Software Foundation, Inc.
 
    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
@@ -16,17 +16,20 @@
 
 #include <config.h>
 
+#include <errno.h>
 #include <stdlib.h>
-#include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/types.h>
 #include <unistd.h>
-#include <errno.h>
-#include <data/settings.h>
-#include <language/command.h>
-#include <libpspp/message.h>
-#include <language/lexer/lexer.h>
-#include <libpspp/misc.h>
-#include <libpspp/str.h>
+
+#include "data/settings.h"
+#include "language/command.h"
+#include "language/lexer/lexer.h"
+#include "libpspp/cast.h"
+#include "libpspp/i18n.h"
+#include "libpspp/message.h"
+#include "libpspp/misc.h"
+#include "libpspp/str.h"
 
 #include "gettext.h"
 #define _(msgid) gettext (msgid)
@@ -40,19 +43,19 @@ int change_permissions(const char *file_name, enum PER per);
 int
 cmd_permissions (struct lexer *lexer, struct dataset *ds UNUSED)
 {
-  char  *fn = 0;
-
+  char  *fn = NULL;
+  const char *str = NULL;
   lex_match (lexer, T_SLASH);
 
   if (lex_match_id (lexer, "FILE"))
     lex_match (lexer, T_EQUALS);
 
-  if (!lex_force_string (lexer))
-    return CMD_FAILURE;
-
-  fn = ss_xstrdup (lex_tokss (lexer));
-  lex_force_match (lexer, T_STRING);
+  str = lex_tokcstr (lexer);
+  if (str)
+    fn = strdup (str);
 
+  if (!lex_force_match (lexer, T_STRING) || str == NULL)
+    goto error;
 
   lex_match (lexer, T_SLASH);
 
@@ -63,21 +66,21 @@ cmd_permissions (struct lexer *lexer, struct dataset *ds UNUSED)
 
   if ( lex_match_id (lexer, "READONLY"))
     {
-      if ( ! change_permissions(fn, PER_RO ) )
+      if (! change_permissions (fn, PER_RO))
        goto error;
     }
-  else if ( lex_match_id (lexer, "WRITEABLE"))
+  else if (lex_match_id (lexer, "WRITEABLE"))
     {
-      if ( ! change_permissions(fn, PER_RW ) )
+      if (! change_permissions (fn, PER_RW ))
        goto error;
     }
   else
     {
-      msg (SE, _("Expecting %s or %s."), "WRITEABLE", "READONLY");
+      lex_error_expecting (lexer, "WRITEABLE", "READONLY", NULL_SENTINEL);
       goto error;
     }
 
-  free(fn);
+  free (fn);
 
   return CMD_SUCCESS;
 
@@ -93,20 +96,22 @@ cmd_permissions (struct lexer *lexer, struct dataset *ds UNUSED)
 int
 change_permissions (const char *file_name, enum PER per)
 {
+  char *locale_file_name;
   struct stat buf;
   mode_t mode;
 
   if (settings_get_safer_mode ())
     {
-      msg (SE, _("This command not allowed when the SAFER option is set."));
-      return CMD_FAILURE;
+      msg (SE, _("This command not allowed when the %s option is set."), "SAFER");
+      return 0;
     }
 
-
-  if ( -1 == stat(file_name, &buf) )
+  locale_file_name = utf8_to_filename (file_name);
+  if ( -1 == stat(locale_file_name, &buf) )
     {
       const int errnum = errno;
       msg (SE, _("Cannot stat %s: %s"), file_name, strerror(errnum));
+      free (locale_file_name);
       return 0;
     }
 
@@ -115,13 +120,16 @@ change_permissions (const char *file_name, enum PER per)
   else
     mode = buf.st_mode & ~0222;
 
-  if ( -1 == chmod(file_name, mode))
+  if ( -1 == chmod(locale_file_name, mode))
 
     {
       const int errnum = errno;
       msg (SE, _("Cannot change mode of %s: %s"), file_name, strerror(errnum));
+      free (locale_file_name);
       return 0;
     }
 
+  free (locale_file_name);
+
   return 1;
 }