#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <errno.h>#include "utils.h"void *s_malloc(size_t size){	int retry = 0;	void *ret;	do {		ret = malloc(size);		if(ret == NULL) {			retry++;			fprintf(stderr,"malloc() failed:%s\n",strerror(errno));			sleep(5);		}	}while((ret == NULL)&&(retry < 3));	return ret;}char *fget_str(char  *s, int n, FILE * stream){	char str_buf[n];	char *s_ptr,*e_ptr;	bzero(str_buf,sizeof(str_buf));	fgets(str_buf,n,stream);		s_ptr = str_buf;	while(*s_ptr == ' '){		s_ptr++;	}		e_ptr = s_ptr;	while((*e_ptr != '\0')&&(*e_ptr != '\n'))		e_ptr++;	if(e_ptr <= &str_buf[n-1])		*e_ptr = '\0';	else		str_buf[n-1] = '\0';	if(strlen(s_ptr) == 0)		return NULL;	else {		bzero(s,n);		strncpy(s,s_ptr,strlen(s_ptr));	}	return s_ptr;}