lynq/MD310EU/ap/app/dmp-test/util/util_string.c

/*******************************************************************************
* Author		  :  author
* Version		  :  V1.0
* Date			  :  2021-07-27
* Description	  :  util_string.c
********************************************************************************/

/********************************* Include File ********************************/
#include <stdlib.h>
#include <string.h>
#include "util_string.h"


/********************************* Macro Definition ****************************/


/********************************* Type Definition *****************************/


/********************************* Variables ***********************************/


/********************************* Function ************************************/
void util_hex2str(uint8_t *in, uint16_t in_len, char *out)
{
    char *zEncode = "0123456789ABCDEF";
    int i = 0, j = 0;

    for (i = 0; i < in_len; i++) {
        out[j++] = zEncode[(in[i] >> 4) & 0xf];
        out[j++] = zEncode[(in[i]) & 0xf];
    }
}

char *util_strtok(char *str, const char *wstr)
{
    int only_delim = 1;
    static char *pos = NULL;
    static char *target = NULL;

    pos = (str == NULL)?(pos):(str);

    if (pos == NULL || wstr == NULL ||
        strlen(pos) <= strlen(wstr)) {
        return NULL;
    }

    target = pos;
    while (strlen(pos) >= strlen(wstr)) {
        if (memcmp(pos,wstr,strlen(wstr)) != 0) {
            only_delim = 0;
            pos++;
            continue;
        }

        if (strlen(pos) == strlen(wstr)) {
            memset(pos,0,strlen(wstr));
            if (only_delim) {
                return NULL;
            }
            return target;
        }

        if (target == pos) {
            pos += strlen(wstr);
            target = pos;
        }else{
            memset(pos,0,strlen(wstr));
            pos += strlen(wstr);
            break;
        }
    }

    return target;
}