DPDK  22.11.0
examples/cmdline/parse_obj_list.c
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation.
* Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
* All rights reserved.
*/
#include <stdio.h>
#include <inttypes.h>
#include <errno.h>
#include <ctype.h>
#include <string.h>
#include <cmdline_parse.h>
#include <cmdline_parse_ipaddr.h>
#include <rte_string_fns.h>
#include "parse_obj_list.h"
/* This file is an example of extension of libcmdline. It provides an
* example of objects stored in a list. */
struct cmdline_token_ops token_obj_list_ops = {
.parse = parse_obj_list,
.complete_get_nb = complete_get_nb_obj_list,
.complete_get_elt = complete_get_elt_obj_list,
.get_help = get_help_obj_list,
};
int
parse_obj_list(cmdline_parse_token_hdr_t *tk, const char *buf, void *res,
unsigned ressize)
{
struct token_obj_list *tk2 = (struct token_obj_list *)tk;
struct token_obj_list_data *tkd = &tk2->obj_list_data;
struct object *o;
unsigned int token_len = 0;
if (*buf == 0)
return -1;
if (res && ressize < sizeof(struct object *))
return -1;
while(!cmdline_isendoftoken(buf[token_len]))
token_len++;
SLIST_FOREACH(o, tkd->list, next) {
if (token_len != strnlen(o->name, OBJ_NAME_LEN_MAX))
continue;
if (strncmp(buf, o->name, token_len))
continue;
break;
}
if (!o) /* not found */
return -1;
/* store the address of object in structure */
if (res)
*(struct object **)res = o;
return token_len;
}
int complete_get_nb_obj_list(cmdline_parse_token_hdr_t *tk)
{
struct token_obj_list *tk2 = (struct token_obj_list *)tk;
struct token_obj_list_data *tkd = &tk2->obj_list_data;
struct object *o;
int ret = 0;
SLIST_FOREACH(o, tkd->list, next) {
ret ++;
}
return ret;
}
int complete_get_elt_obj_list(cmdline_parse_token_hdr_t *tk,
int idx, char *dstbuf, unsigned int size)
{
struct token_obj_list *tk2 = (struct token_obj_list *)tk;
struct token_obj_list_data *tkd = &tk2->obj_list_data;
struct object *o;
int i = 0;
unsigned len;
SLIST_FOREACH(o, tkd->list, next) {
if (i++ == idx)
break;
}
if (!o)
return -1;
len = strnlen(o->name, OBJ_NAME_LEN_MAX);
if ((len + 1) > size)
return -1;
if (dstbuf)
strlcpy(dstbuf, o->name, size);
return 0;
}
int get_help_obj_list(__rte_unused cmdline_parse_token_hdr_t *tk,
char *dstbuf, unsigned int size)
{
snprintf(dstbuf, size, "Obj-List");
return 0;
}