LXR dpdk/examples/cmdline/parse_obj

   1/* SPDX-License-Identifier: BSD-3-Clause
   2 * Copyright(c) 2010-2014 Intel Corporation.
   3 * Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
   4 * All rights reserved.
   5 */
   6
   7#include <stdio.h>
   8#include <inttypes.h>
   9#include <errno.h>
  10#include <ctype.h>
  11#include <string.h>
  12
  13#include <cmdline_parse.h>
  14#include <cmdline_parse_ipaddr.h>
  15
  16#include <rte_string_fns.h>
  17
  18#include "parse_obj_list.h"
  19
  20/* This file is an example of extension of libcmdline. It provides an
  21 * example of objects stored in a list. */
  22
  23struct cmdline_token_ops token_obj_list_ops = {
  24        .parse = parse_obj_list,
  25        .complete_get_nb = complete_get_nb_obj_list,
  26        .complete_get_elt = complete_get_elt_obj_list,
  27        .get_help = get_help_obj_list,
  28};
  29
  30int
  31parse_obj_list(cmdline_parse_token_hdr_t *tk, const char *buf, void *res,
  32        unsigned ressize)
  33{
  34        struct token_obj_list *tk2 = (struct token_obj_list *)tk;
  35        struct token_obj_list_data *tkd = &tk2->obj_list_data;
  36        struct object *o;
  37        unsigned int token_len = 0;
  38
  39        if (*buf == 0)
  40                return -1;
  41
  42        if (res && ressize < sizeof(struct object *))
  43                return -1;
  44
  45        while(!cmdline_isendoftoken(buf[token_len]))
  46                token_len++;
  47
  48        SLIST_FOREACH(o, tkd->list, next) {
  49                if (token_len != strnlen(o->name, OBJ_NAME_LEN_MAX))
  50                        continue;
  51                if (strncmp(buf, o->name, token_len))
  52                        continue;
  53                break;
  54        }
  55        if (!o) /* not found */
  56                return -1;
  57
  58        /* store the address of object in structure */
  59        if (res)
  60                *(struct object **)res = o;
  61
  62        return token_len;
  63}
  64
  65int complete_get_nb_obj_list(cmdline_parse_token_hdr_t *tk)
  66{
  67        struct token_obj_list *tk2 = (struct token_obj_list *)tk;
  68        struct token_obj_list_data *tkd = &tk2->obj_list_data;
  69        struct object *o;
  70        int ret = 0;
  71
  72        SLIST_FOREACH(o, tkd->list, next) {
  73                ret ++;
  74        }
  75        return ret;
  76}
  77
  78int complete_get_elt_obj_list(cmdline_parse_token_hdr_t *tk,
  79                              int idx, char *dstbuf, unsigned int size)
  80{
  81        struct token_obj_list *tk2 = (struct token_obj_list *)tk;
  82        struct token_obj_list_data *tkd = &tk2->obj_list_data;
  83        struct object *o;
  84        int i = 0;
  85        unsigned len;
  86
  87        SLIST_FOREACH(o, tkd->list, next) {
  88                if (i++ == idx)
  89                        break;
  90        }
  91        if (!o)
  92                return -1;
  93
  94        len = strnlen(o->name, OBJ_NAME_LEN_MAX);
  95        if ((len + 1) > size)
  96                return -1;
  97
  98        if (dstbuf)
  99                strlcpy(dstbuf, o->name, size);
 100
 101        return 0;
 102}
 103
 104
 105int get_help_obj_list(__rte_unused cmdline_parse_token_hdr_t *tk,
 106                      char *dstbuf, unsigned int size)
 107{
 108        snprintf(dstbuf, size, "Obj-List");
 109        return 0;
 110}
 111