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/* 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 <ctype.h>
#include <string.h>
#include <stdarg.h>
#include <errno.h>
#include <rte_string_fns.h>
#include "cmdline_parse.h"
#include "cmdline_parse_string.h"
struct cmdline_token_ops cmdline_token_string_ops = {
.parse = cmdline_parse_string,
.complete_get_nb = cmdline_complete_get_nb_string,
.complete_get_elt = cmdline_complete_get_elt_string,
.get_help = cmdline_get_help_string,
};
#define CHOICESTRING_HELP "Mul-choice STRING"
#define ANYSTRING_HELP "Any STRING"
#define ANYSTRINGS_HELP "Any STRINGS"
#define FIXEDSTRING_HELP "Fixed STRING"
static unsigned int
get_token_len(const char *s)
{
char c;
unsigned int i=0;
c = s[i];
while (c!='#' && c!='\0') {
i++;
c = s[i];
}
return i;
}
static const char *
get_next_token(const char *s)
{
unsigned int i;
i = get_token_len(s);
if (s[i] == '#')
return s+i+1;
return NULL;
}
int
cmdline_parse_string(cmdline_parse_token_hdr_t *tk, const char *buf, void *res,
unsigned ressize)
{
struct cmdline_token_string *tk2;
struct cmdline_token_string_data *sd;
unsigned int token_len;
const char *str;
if (res && ressize < STR_TOKEN_SIZE)
return -1;
if (!tk || !buf || ! *buf)
return -1;
tk2 = (struct cmdline_token_string *)tk;
sd = &tk2->string_data;
/* fixed string (known single token) */
if ((sd->str != NULL) && (strcmp(sd->str, TOKEN_STRING_MULTI) != 0)) {
str = sd->str;
do {
token_len = get_token_len(str);
/* if token is too big... */
if (token_len >= STR_TOKEN_SIZE - 1) {
continue;
}
if ( strncmp(buf, str, token_len) ) {
continue;
}
if ( !cmdline_isendoftoken(*(buf+token_len)) ) {
continue;
}
break;
} while ( (str = get_next_token(str)) != NULL );
if (!str)
return -1;
}
/* multi string */
else if (sd->str != NULL) {
if (ressize < STR_MULTI_TOKEN_SIZE)
return -1;
token_len = 0;
while (!cmdline_isendofcommand(buf[token_len]) &&
token_len < (STR_MULTI_TOKEN_SIZE - 1))
token_len++;
/* return if token too long */
if (token_len >= (STR_MULTI_TOKEN_SIZE - 1))
return -1;
}
/* unspecified string (unknown single token) */
else {
token_len = 0;
while(!cmdline_isendoftoken(buf[token_len]) &&
token_len < (STR_TOKEN_SIZE-1))
token_len++;
/* return if token too long */
if (token_len >= STR_TOKEN_SIZE - 1) {
return -1;
}
}
if (res) {
if ((sd->str != NULL) && (strcmp(sd->str, TOKEN_STRING_MULTI) == 0))
/* we are sure that token_len is < STR_MULTI_TOKEN_SIZE-1 */
snprintf(res, STR_MULTI_TOKEN_SIZE, "%s", buf);
else
/* we are sure that token_len is < STR_TOKEN_SIZE-1 */
snprintf(res, STR_TOKEN_SIZE, "%s", buf);
*((char *)res + token_len) = 0;
}
return token_len;
}
int cmdline_complete_get_nb_string(cmdline_parse_token_hdr_t *tk)
{
struct cmdline_token_string *tk2;
struct cmdline_token_string_data *sd;
const char *str;
int ret = 1;
if (!tk)
return -1;
tk2 = (struct cmdline_token_string *)tk;
sd = &tk2->string_data;
if (!sd->str)
return 0;
str = sd->str;
while( (str = get_next_token(str)) != NULL ) {
ret++;
}
return ret;
}
int cmdline_complete_get_elt_string(cmdline_parse_token_hdr_t *tk, int idx,
char *dstbuf, unsigned int size)
{
struct cmdline_token_string *tk2;
struct cmdline_token_string_data *sd;
const char *s;
unsigned int len;
if (!tk || !dstbuf || idx < 0)
return -1;
tk2 = (struct cmdline_token_string *)tk;
sd = &tk2->string_data;
s = sd->str;
while (idx-- && s)
s = get_next_token(s);
if (!s)
return -1;
len = get_token_len(s);
if (len > size - 1)
return -1;
memcpy(dstbuf, s, len);
dstbuf[len] = '\0';
return 0;
}
int cmdline_get_help_string(cmdline_parse_token_hdr_t *tk, char *dstbuf,
unsigned int size)
{
struct cmdline_token_string *tk2;
struct cmdline_token_string_data *sd;
const char *s;
if (!tk || !dstbuf)
return -1;
tk2 = (struct cmdline_token_string *)tk;
sd = &tk2->string_data;
s = sd->str;
if (s) {
if (strcmp(s, TOKEN_STRING_MULTI) == 0)
snprintf(dstbuf, size, ANYSTRINGS_HELP);
else if (get_next_token(s))
snprintf(dstbuf, size, CHOICESTRING_HELP);
else
snprintf(dstbuf, size, FIXEDSTRING_HELP);
} else
snprintf(dstbuf, size, ANYSTRING_HELP);
return 0;
}
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