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utils.c
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utils.c
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/*-
* Copyright(c) <2014-2024>, Intel Corporation. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
/* Created 2014 by Keith Wiles @ intel.com */
#include <rte_config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>
#include <sys/types.h>
#include <unistd.h>
#include <string.h>
#include <sys/queue.h>
#include <netinet/in.h>
#include <stdarg.h>
#include <ctype.h>
#include <errno.h>
#include <getopt.h>
#include <termios.h>
#include <pg_strings.h>
#include "utils.h"
#define MAX_PARSE_SIZE 256
/******************************************************************************
* pg_strtrim - Remove leading and trailing white space from a string.
*
* SYNOPSIS
* char * pg_strtrim
* (
* char * str
* )
*
* DESCRIPTION
* Remove leading and trailing white space from a string.
*
* RETURNS: pointer to the trimmed string or NULL <str> is Null.
*
* ERRNO: N/A
*
* \NOMANUAL
*/
static char *
_strtrim(char *str)
{
char *p;
int len;
if ((str != NULL) && (len = strlen(str))) {
/* skip white spaces at the front of the string */
for (; *str != 0; str++)
if ((*str != ' ') && (*str != '\t') && (*str != '\r') && (*str != '\n'))
break;
len = strlen(str);
if (len == 0)
return str;
/* Trim trailing characters */
for (p = &str[len - 1]; p > str; p--) {
if ((*p != ' ') && (*p != '\t') && (*p != '\r') && (*p != '\n'))
break;
*p = '\0';
}
}
return str;
}
uint32_t
pg_strparse(char *str, const char *delim, char **entries, uint32_t max_entries)
{
uint32_t i;
char *saved;
if ((str == NULL) || (delim == NULL) || (entries == NULL) || (max_entries == 0))
return 0;
memset(entries, '\0', (sizeof(char *) * max_entries));
for (i = 0; i < max_entries; i++) {
entries[i] = strtok_r(str, delim, &saved);
str = NULL;
if (entries[i] == NULL) /* We are done. */
break;
entries[i] = _strtrim(entries[i]);
}
return i;
}
static uint32_t
skip_lst(char f, const char *lst)
{
for (; *lst != '\n'; lst++)
if (f == *lst)
return 1;
return 0;
}
char *
pg_strccpy(char *t, char *f, const char *lst)
{
if ((t == NULL) || (f == NULL))
return NULL;
*t = '\0';
if (*f == '\0')
return t;
while (*f != '\0') {
if (skip_lst(*f, lst))
f++;
else
*t++ = *f++;
}
*t = '\0';
return t;
}