New plugin library framework for loading and saving .cfg files

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@4912 a1c6a512-1295-4272-9138-f99709370657

apps/plugins/lib/configfile.h

@@ -0,0 +1,44 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 Linus Nielsen Feltzing
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#ifndef CONFIGFILE_H
+#define CONFIGFILE_H
+
+#define TYPE_INT    1
+#define TYPE_ENUM   2
+#define TYPE_STRING 3
+
+struct configdata
+{
+    int type;      /* See TYPE_ macros above */
+    int min;       /* Min value for integers, should be 0 for enums */
+    int max;       /* Max value for enums and integers,
+                      buffer size for strings  */
+    int *val;      /* Pointer to integer/enum value,
+                      NULL if the item is a string */
+    char *name;    /* Pointer to the name of the item */
+    char **values; /* List of strings for enums, NULL if not enum */
+    char *string;  /* Pointer to a string buffer if the item is a string,
+                      NULL otherwise */
+};
+
+void configfile_init(struct plugin_api* newrb);
+int configfile_save(char *filename, struct configdata *cfg, int num_items);
+int configfile_load(char *filename, struct configdata *cfg, int num_items);
+
+#endif