111 lines
3.4 KiB
C
111 lines
3.4 KiB
C
/*
|
|
* Copyright (C) 2013 Felix Fietkau <nbd@openwrt.org>
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
#ifndef __JSON_SCRIPT_H
|
|
#define __JSON_SCRIPT_H
|
|
|
|
#include <libubox/avl.h>
|
|
#include <libubox/blob.h>
|
|
#include <libubox/blobmsg.h>
|
|
#include <libubox/utils.h>
|
|
|
|
struct json_script_file;
|
|
|
|
struct json_script_ctx {
|
|
struct avl_tree files;
|
|
struct blob_buf buf;
|
|
|
|
uint32_t run_seq;
|
|
|
|
/*
|
|
* handle_command: handle a command that was not recognized by the
|
|
* json_script core (required)
|
|
*
|
|
* @cmd: blobmsg container of the processed command
|
|
* @vars: blobmsg container of current run variables
|
|
*/
|
|
void (*handle_command)(struct json_script_ctx *ctx, const char *name,
|
|
struct blob_attr *cmd, struct blob_attr *vars);
|
|
|
|
/*
|
|
* handle_expr: handle an expression that was not recognized by the
|
|
* json_script core (optional)
|
|
*
|
|
* @expr: blobmsg container of the processed expression
|
|
* @vars: blobmsg container of current runtime variables
|
|
*/
|
|
int (*handle_expr)(struct json_script_ctx *ctx, const char *name,
|
|
struct blob_attr *expr, struct blob_attr *vars);
|
|
|
|
/*
|
|
* handle_var - look up a variable that's not part of the runtime
|
|
* variable set (optional)
|
|
*/
|
|
const char *(*handle_var)(struct json_script_ctx *ctx, const char *name,
|
|
struct blob_attr *vars);
|
|
|
|
/*
|
|
* handle_file - load a file by filename (optional)
|
|
*
|
|
* in case of wildcards, it can return a chain of json_script files
|
|
* linked via the ::next pointer. Only the first json_script file is
|
|
* added to the tree.
|
|
*/
|
|
struct json_script_file *(*handle_file)(struct json_script_ctx *ctx,
|
|
const char *name);
|
|
|
|
/*
|
|
* handle_error - handle a processing error in a command or expression
|
|
* (optional)
|
|
*
|
|
* @msg: error message
|
|
* @context: source file context of the error (blobmsg container)
|
|
*/
|
|
void (*handle_error)(struct json_script_ctx *ctx, const char *msg,
|
|
struct blob_attr *context);
|
|
};
|
|
|
|
struct json_script_file {
|
|
struct avl_node avl;
|
|
struct json_script_file *next;
|
|
|
|
unsigned int seq;
|
|
struct blob_attr data[];
|
|
};
|
|
|
|
void json_script_init(struct json_script_ctx *ctx);
|
|
void json_script_free(struct json_script_ctx *ctx);
|
|
|
|
/*
|
|
* json_script_run - run a json script with a set of runtime variables
|
|
*
|
|
* @filename: initial filename to run
|
|
* @vars: blobmsg container of the current runtime variables
|
|
*/
|
|
void json_script_run(struct json_script_ctx *ctx, const char *filename,
|
|
struct blob_attr *vars);
|
|
|
|
struct json_script_file *
|
|
json_script_file_from_blobmsg(const char *name, void *data, int len);
|
|
|
|
/*
|
|
* json_script_find_var - helper function to find a runtime variable from
|
|
* the list passed by json_script user.
|
|
* It is intended to be used by the .handle_var callback
|
|
*/
|
|
const char *json_script_find_var(struct json_script_ctx *ctx, struct blob_attr *vars,
|
|
const char *name);
|
|
|
|
#endif
|