Convert files named on the command line to filename encoding.

Files specified on the command line must be converted to the
"filename" encoding (whatever it may be) otherwise some systems
will not know they exist.  Tested by Michel Boaventura.
Partially fixes bug #26023

diff --git a/src/ui/gui/psppire.c b/src/ui/gui/psppire.c
index 3d0d864967542bc05ebba66dc322844ef2d391d6..599d8108ddb7d8b91897eb6f16bf0cf27003ec1b 100644 (file)
--- a/src/ui/gui/psppire.c
+++ b/src/ui/gui/psppire.c
@@ -279,7 +279,59 @@ parse_non_options (int key, char *arg, struct argp_state *state)
     {
     case ARGP_KEY_ARG:
       {
-       psppire_window_load (PSPPIRE_WINDOW (the_data_window), arg);
+       gchar *filename = NULL;
+       gchar *utf8 = NULL;
+       const gchar *local_encoding = NULL;
+       gsize written = -1;
+       const gboolean local_is_utf8 = g_get_charset (&local_encoding);
+
+       /* There seems to be no Glib function to convert from local encoding
+          to filename encoding.  Therefore it has to be done in two steps:
+          the intermediate encoding is UTF8.
+
+          Either step could fail.  However, in many cases the file can still
+          be loaded even if the conversion fails. So in those cases, after showing
+          a warning, we simply copy the locally encoded filename to the destination
+          and hope for the best.
+       */
+
+       if ( local_is_utf8)
+         {
+           utf8 = strdup (arg);
+         }
+       else
+         {
+           GError *err = NULL;
+           utf8 = g_locale_to_utf8 (arg, -1, NULL, &written, &err);
+           if ( NULL == utf8)
+             {
+               g_warning ("Cannot convert filename from local encoding \"%s\" to UTF-8: %s",
+                          local_encoding,
+                          err->message);
+               g_clear_error (&err);
+             }
+         }
+
+       if ( NULL != utf8)
+         {
+           GError *err = NULL;
+           filename = g_filename_from_utf8 (utf8, written, NULL, NULL, &err);
+           if ( NULL == filename)
+             {
+               g_warning ("Cannot convert filename from UTF8 to filename encoding: %s",
+                          err->message);
+               g_clear_error (&err);
+             }
+         }
+
+       g_free (utf8);
+
+       if ( filename == NULL)
+         filename = strdup (arg);
+
+       psppire_window_load (PSPPIRE_WINDOW (the_data_window), filename);
+
+       g_free (filename);
        break;
       }
     default: