loadrunner通过字符串左右边界切割字符串

/******
*函数名称：strcut
*函数说明：通过左边界、右边界,从字符串中截取子字符串
*注意事项：会申请新的内存，需要手动释放
******/
void strcut(char *strSrc, char* str, char *leftStr, char *rightStr)
{
    char *st1, *st2;
    int result, i = ;
    i=strlen(leftStr);
    st1 = (char*) strstr(strSrc, leftStr);
    if (st1 != NULL){
        st1 += i;
        st2 = (char*) strstr(st1,rightStr);
        if (st2 != NULL){
            result = st2 - st1;
            *(st1 + result) = '\0';
        }
    }
    if ((st1 == NULL) || (st2 == NULL))
        lr_error_message("Error: No substring found for the specified boundary");
    else
        lr_save_string(lr_eval_string(st1),str);
}

void strcut(char *strSrc, char* str, char *leftStr, char *rightStr)
{
    char *st1, *st2;
    int result, i = ;
    i=strlen(leftStr);
    st1 = (char*) strstr(strSrc, leftStr);
    if (st1 != NULL){
        st1 += i;
        st2 = (char*) strstr(st1,rightStr);
        if (st2 != NULL){
            result = st2 - st1;
            *(st1 + result) = '\0';
        }
    }
    if ((st1 == NULL) || (st2 == NULL))
        lr_error_message("Error: No substring found for the specified boundary");
    else
        lr_save_string(lr_eval_string(st1),str);
}

Action()
{
    lr_save_string("{\"code\": \"00000000\", \"msg\": \"成功\", \"transId\": \"f6079c11ac9d463bb219acba8bc3448c\",\"data\": {\"randId\":\"e02a104a4a2f421b93bdb8f6d9daf7c0\"}}","allRes2");

    strcut(lr_eval_string("{allRes2}"), "randId", "randId\":\"","\"}");  

    lr_output_message("randId:%s",lr_eval_string("{randId}")); 

    return ;
}

void web_reg_save_param_custom(char *sourceStr, char* outpuStr, char *leftBdry, char *rightBdry){     

	char *st1, *st2;

	int result, i = 0;

	i=strlen(leftBdry);

	st1 = (char*) strstr(sourceStr, leftBdry); 

	if (st1 != NULL){ 

		st1 += i;

		st2 = (char*) strstr(st1, rightBdry);

		if (st2 != NULL){

			result = st2 - st1;

			*(st1 + result) = '\0';

			}     
		}  

	if ((st1 == NULL) || (st2 == NULL))

		lr_error_message("Error: No substring found for the specified boundary");

	else  

		lr_save_string(lr_eval_string(st1), outpuStr); 
}

Action()
{

	lr_save_string("xyzToken3234344endKey,","test"); 

	web_reg_save_param_custom(lr_eval_string("{test}"), "Outputtest", "Token","endKey");  

	lr_output_message("切割后的值=%s",lr_eval_string("{Outputtest}")); 

	return 0;
}

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