int main(int argc, char *argv[]) {
if (argc != 2) {
err_sys("fcntl usarge:<descripter>\n");
}
int fd=atoi(argv[1]);
getfl(fd);
setfl(fd,O_NONBLOCK);
getfl(fd);
exit(0);
}
/* Returns the numerical value of a flag, or -1 if not there */
int getFlag(int ac, char **ag, char flag)
{
int i, val;
for (i = 1; i < ac; i++)
if ((ag[i][0] == FLAG_SIGNAL)
&& ((val = getfl(ag[i], flag))) >= 0)
return val;
return(-1);
}
int main()
{
long count=0; //文件中每行数据用|+|分割的字段数
long l=0; //文件行数
long ret=0;
char *bgn;
char *end;
FILE *fp=NULL;
FILE *print_out=NULL;
char tmp_str[512];
fp=fopen("/Users/zhanglei/Study/job/c/file_deal/file.txt","r");
print_out=fopen("/Users/zhanglei/Study/job/c/file_deal/file_out.txt","a+");
if(fp==NULL || print_out==NULL)
{
return 1;
}
fprintf(print_out,"--------------------------------------------\n");
//循环处理每行数据
while(1)
{
memset(src_buf,0x00,sizeof(src_buf));
p=0;
count=0;
//fgets读取文件的时候，若bufsize大于该行的字符总数加2('\n','\0'),文件仅仅只是这一行读取完，随后指向文件的指针会自动偏移至下一行
if(fgets(src_buf,sizeof(src_buf),fp)==NULL)
{
if(0==l)
{
fprintf(print_out,"文件为空!");
return 1;
}
else
{
fprintf(print_out,"文件读取完毕!\n");
break;
}
}
l++;
//src_buf存储每行数据
rtrim(src_buf);
fprintf(print_out,"src_buf:[%s]\n",src_buf);
end=strstr(src_buf,"|-|");
while(1)
{
bgn = (char *)&src_buf[p];
char *prt=strstr(bgn,"|+|");
if( prt != NULL)
{
p+=prt-bgn+3;
count++;
}
else
{
p+=end-bgn;
count++;
break;
}
}
fprintf(print_out,"p=[%d],src_buf[p]=[%c],count=[%d]\n",p,src_buf[p],count);
p=0;
for(;count>0;count--)
{
memset(tmp_str,0x00,sizeof(tmp_str));
//获取每个字段
ret=getfl(tmp_str);
if(0!=ret)
fprintf(print_out,"getfl调用失败!");
fprintf(print_out,"tmp_str:%s\n",tmp_str);
}
}
fprintf(print_out,"文件行数:[%d]\n",l);
fprintf(print_out,"--------------------------------------------\n");
fclose(fp);
fclose(print_out);
return 0;
}