1 files changed, 119 insertions, 0 deletions
diff --git a/ui/language.c b/ui/language.c
new file mode 100644
index 00000000..a76fcdb7
--- /dev/null
+++ b/ui/language.c
@@ -0,0 +1,119 @@
+/* language.c
+ * Language "preference" handling routines
+ * Copyright 2014, Michal Labedzki for Tieto Corporation
+ *
+ * Wireshark - Network traffic analyzer
+ * By Gerald Combs <gerald@wireshark.org>
+ * Copyright 1998 Gerald Combs
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <errno.h>
+
+#include <epan/prefs.h>
+#include <epan/prefs-int.h>
+
+#include <wsutil/filesystem.h>
+#include <wsutil/file_util.h>
+
+#include "ui/language.h"
+#include "ui/simple_dialog.h"
+
+#define LANGUAGE_FILE_NAME      "language"
+#define LANGUAGE_PREF_LANGUAGE  "language"
+
+char *language = NULL;
+
+/* set one user's recent common file key/value pair */
+static prefs_set_pref_e
+read_language_pref(gchar *key, const gchar *value,
+                   void *private_data _U_, gboolean return_range_errors _U_)
+{
+    if (strcmp(key, LANGUAGE_PREF_LANGUAGE) == 0) {
+        g_free(language);
+        /*
+         * For backwards compatibility, treat "auto" as meaning "use the
+         * system language".
+         *
+         * To handle the old buggy code that didn't check whether "language"
+         * was null before trying to print it, treat "(null)" - which many,
+         * but *NOT* all, system printfs print for a null pointer (some
+         * printfs, such as the one in Solaris, *crash* with %s and a null
+         * pointer) - as meaning "use the system language".
+         */
+        if (!value || !*value || strcmp(value, "auto") == 0 ||
+            strcmp(value, "(null)") == 0)
+            language = g_strdup(USE_SYSTEM_LANGUAGE);
+        else
+            language = g_strdup(value);
+    }
+
+    return PREFS_SET_OK;
+}
+
+void
+read_language_prefs(void)
+{
+    char       *rf_path;
+    FILE       *rf;
+
+    rf_path = get_persconffile_path(LANGUAGE_FILE_NAME, FALSE);
+
+    if ((rf = ws_fopen(rf_path, "r")) != NULL) {
+        read_prefs_file(rf_path, rf, read_language_pref, NULL);
+
+        fclose(rf);
+    }
+
+    g_free(rf_path);
+}
+
+gboolean
+write_language_prefs(void)
+{
+    char        *pf_dir_path;
+    char        *rf_path;
+    FILE        *rf;
+
+    /* To do:
+    * - Split output lines longer than MAX_VAL_LEN
+    * - Create a function for the preference directory check/creation
+    *   so that duplication can be avoided with filter.c
+    */
+
+    /* Create the directory that holds personal configuration files, if
+        necessary.  */
+    if (create_persconffile_dir(&pf_dir_path) == -1) {
+        simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
+        "Can't create directory\n\"%s\"\nfor language file: %s.", pf_dir_path,
+        g_strerror(errno));
+        g_free(pf_dir_path);
+        return FALSE;
+    }
+
+    rf_path = get_persconffile_path(LANGUAGE_FILE_NAME, FALSE);
+    if ((rf = ws_fopen(rf_path, "w")) == NULL) {
+        simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
+        "Can't open recent file\n\"%s\": %s.", rf_path,
+        g_strerror(errno));
+        g_free(rf_path);
+        return FALSE;
+    }
+    g_free(rf_path);
+
+    fputs("# Language settings file for Wireshark " VERSION ".\n"
+        "#\n"
+        "# This file is regenerated each time Wireshark is quit.\n"
+        "# So be careful, if you want to make manual changes here.\n"
+        "\n", rf);
+
+    fprintf(rf, LANGUAGE_PREF_LANGUAGE ": %s\n", language ? language : USE_SYSTEM_LANGUAGE);
+
+    fclose(rf);
+
+    return TRUE;
+}