+/*
+ * libuci - Library for the Unified Configuration Interface
+ * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
+ *
+ * this program is free software; you can redistribute it and/or modify
+ * it under the terms of the gnu lesser general public license version 2.1
+ * as published by the free software foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __LIBUCI_H
+#define __LIBUCI_H
+
+#include <setjmp.h>
+#include <stdio.h>
+
+#define UCI_CONFDIR "/etc/config"
+
+enum
+{
+ UCI_OK = 0,
+ UCI_ERR_MEM,
+ UCI_ERR_INVAL,
+ UCI_ERR_NOTFOUND,
+ UCI_ERR_IO,
+ UCI_ERR_PARSE,
+ UCI_ERR_UNKNOWN,
+ UCI_ERR_LAST
+};
+
+struct uci_list
+{
+ void *next;
+ void *prev;
+};
+
+struct uci_config;
+struct uci_section;
+struct uci_option;
+struct uci_parse_context;
+
+
+/**
+ * uci_alloc: Allocate a new uci context
+ */
+extern struct uci_context *uci_alloc(void);
+
+/**
+ * uci_perror: Print the last uci error that occured
+ * @ctx: uci context
+ * @str: string to print before the error message
+ */
+extern void uci_perror(struct uci_context *ctx, const char *str);
+
+/**
+ * uci_load: Parse an uci config file and store it in the uci context
+ *
+ * @ctx: uci context
+ * @name: name of the config file (relative to the config directory)
+ */
+int uci_load(struct uci_context *ctx, const char *name);
+
+/**
+ * uci_cleanup: Clean up after an error
+ *
+ * @ctx: uci context
+ */
+int uci_cleanup(struct uci_context *ctx);
+
+
+/* UCI data structures */
+
+struct uci_context
+{
+ struct uci_list root;
+
+ /* for error handling only */
+ struct uci_parse_context *pctx;
+
+ /* private: */
+ int errno;
+ jmp_buf trap;
+ jmp_buf trap_saved;
+ int saved;
+};
+
+struct uci_parse_context
+{
+ int line;
+ int byte;
+
+ /* private: */
+ struct uci_config *cfg;
+ FILE *file;
+ char *buf;
+ int bufsz;
+};
+
+struct uci_config
+{
+ struct uci_list list;
+ struct uci_list sections;
+ struct uci_context *ctx;
+ char *name;
+};
+
+struct uci_section
+{
+ struct uci_list list;
+ struct uci_list options;
+ struct uci_config *config;
+ char *type;
+ char *name;
+};
+
+struct uci_option
+{
+ struct uci_list list;
+ struct uci_section *section;
+ char *name;
+ char *value;
+};
+
+/* linked list handling */
+#ifndef offsetof
+#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+#endif
+
+#define uci_list_empty(list) (list->next == ptr)
+#define uci_list_entry(_type, _ptr) \
+ ((struct uci_ ## _type *) ((char *)(_ptr) - offsetof(struct uci_ ## _type,list)))
+
+#define uci_foreach_entry(_type, _list, _ptr) \
+ for(_ptr = uci_list_entry(_type, (_list)->next); \
+ &_ptr->list != (_list); \
+ _ptr = uci_list_entry(_type, _ptr->list.next))
+
+#endif