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/*
* CLI graph handling
*
* --
* Copyright (C) 2016 Cumulus Networks, Inc.
* Copyright (C) 1997, 98, 99 Kunihiro Ishiguro
* Copyright (C) 2013 by Open Source Routing.
* Copyright (C) 2013 by Internet Systems Consortium, Inc. ("ISC")
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _FRR_COMMAND_GRAPH_H
#define _FRR_COMMAND_GRAPH_H
#include <stdbool.h>
#include <stdint.h>
#include "memory.h"
#include "vector.h"
#include "graph.h"
#ifdef __cplusplus
extern "C" {
#endif
DECLARE_MTYPE(CMD_ARG)
struct vty;
/**
* Types for tokens.
*
* The type determines what kind of data the token can match (in the
* matching use case) or hold (in the argv use case).
*/
/* clang-format off */
enum cmd_token_type {
WORD_TKN, // words
VARIABLE_TKN, // almost anything
RANGE_TKN, // integer range
IPV4_TKN, // IPV4 addresses
IPV4_PREFIX_TKN, // IPV4 network prefixes
IPV6_TKN, // IPV6 prefixes
IPV6_PREFIX_TKN, // IPV6 network prefixes
MAC_TKN, // Ethernet address
MAC_PREFIX_TKN, // Ethernet address w/ CIDR mask
/* plumbing types */
FORK_TKN, // marks subgraph beginning
JOIN_TKN, // marks subgraph end
START_TKN, // first token in line
END_TKN, // last token in line
SPECIAL_TKN = FORK_TKN,
};
/* clang-format on */
#define IS_VARYING_TOKEN(x) ((x) >= VARIABLE_TKN && (x) < FORK_TKN)
/* Command attributes */
enum { CMD_ATTR_NORMAL,
CMD_ATTR_DEPRECATED,
CMD_ATTR_HIDDEN,
};
/* Comamand token struct. */
struct cmd_token {
enum cmd_token_type type; // token type
uint8_t attr; // token attributes
bool allowrepeat; // matcher allowed to match token repetively?
uint32_t refcnt;
char *text; // token text
char *desc; // token description
long long min, max; // for ranges
char *arg; // user input that matches this token
char *varname;
struct graph_node *forkjoin; // paired FORK/JOIN for JOIN/FORK
};
/* Structure of command element. */
struct cmd_element {
const char *string; /* Command specification by string. */
const char *doc; /* Documentation of this command. */
int daemon; /* Daemon to which this command belong. */
uint8_t attr; /* Command attributes */
/* handler function for command */
int (*func)(const struct cmd_element *, struct vty *, int,
struct cmd_token *[]);
const char *name; /* symbol name for debugging */
};
/* text for <cr> command */
#define CMD_CR_TEXT "<cr>"
/* memory management for cmd_token */
extern struct cmd_token *cmd_token_new(enum cmd_token_type, uint8_t attr,
const char *text, const char *desc);
extern struct cmd_token *cmd_token_dup(struct cmd_token *);
extern void cmd_token_del(struct cmd_token *);
extern void cmd_token_varname_set(struct cmd_token *token, const char *varname);
extern void cmd_graph_parse(struct graph *graph, struct cmd_element *cmd);
extern void cmd_graph_names(struct graph *graph);
extern void cmd_graph_merge(struct graph *old, struct graph *n,
int direction);
/*
* Print callback for DOT dumping.
*
* See graph.h for more details.
*/
extern void cmd_graph_node_print_cb(struct graph_node *gn, struct buffer *buf);
/*
* Dump command graph to DOT.
*
* cmdgraph
* A command graph to dump
*
* Returns:
* String allocated with MTYPE_TMP representing this graph
*/
char *cmd_graph_dump_dot(struct graph *cmdgraph);
#ifdef __cplusplus
}
#endif
#endif /* _FRR_COMMAND_GRAPH_H */
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