mirror of https://github.com/F-Stack/f-stack.git
101 lines
1.8 KiB
C
101 lines
1.8 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#include <ctype.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <rte_string_fns.h>
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#include <rte_errno.h>
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/* split string into tokens */
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int
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rte_strsplit(char *string, int stringlen,
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char **tokens, int maxtokens, char delim)
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{
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int i, tok = 0;
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int tokstart = 1; /* first token is right at start of string */
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if (string == NULL || tokens == NULL)
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goto einval_error;
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for (i = 0; i < stringlen; i++) {
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if (string[i] == '\0' || tok >= maxtokens)
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break;
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if (tokstart) {
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tokstart = 0;
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tokens[tok++] = &string[i];
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}
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if (string[i] == delim) {
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string[i] = '\0';
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tokstart = 1;
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}
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}
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return tok;
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einval_error:
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errno = EINVAL;
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return -1;
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}
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/* Copy src string into dst.
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*
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* Return negative value and NUL-terminate if dst is too short,
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* Otherwise return number of bytes copied.
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*/
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ssize_t
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rte_strscpy(char *dst, const char *src, size_t dsize)
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{
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size_t nleft = dsize;
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size_t res = 0;
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/* Copy as many bytes as will fit. */
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while (nleft != 0) {
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dst[res] = src[res];
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if (src[res] == '\0')
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return res;
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res++;
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nleft--;
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}
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/* Not enough room in dst, set NUL and return error. */
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if (res != 0)
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dst[res - 1] = '\0';
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rte_errno = E2BIG;
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return -rte_errno;
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}
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uint64_t
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rte_str_to_size(const char *str)
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{
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char *endptr;
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unsigned long long size;
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while (isspace((int)*str))
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str++;
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if (*str == '-')
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return 0;
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errno = 0;
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size = strtoull(str, &endptr, 0);
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if (errno)
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return 0;
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if (*endptr == ' ')
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endptr++; /* allow 1 space gap */
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switch (*endptr) {
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case 'G': case 'g':
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size *= 1024; /* fall-through */
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case 'M': case 'm':
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size *= 1024; /* fall-through */
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case 'K': case 'k':
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size *= 1024; /* fall-through */
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default:
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break;
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}
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return size;
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}
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