Question

linux c 编程：创建一个线程，监视某个目录，一旦目录里出现新的文件，就将文件转移到指定的目录里去。

Answer 1

/*
头文件
*/
#define SRCPATH "srcpath/"
#define DSTPATH "dstpath/"

int movefile()
{
DIR *dir;
struct dirent *dt;
FILE *fp1,*fp2;
char filename1[256],filename2[256];
char buf[1024];
int readsize,writesize;

if((dir = opendir(SRCPATH)) == NULL)
{
printf("opendir %s error\n",SRCPATH);
return -1;
}
memset(filename1,0,sizeof(filename1));
strcpy(filename1,SRCPATH);
memset(filename2,0,sizeof(filename2));
strcpy(filename2,DSTPATH);
while(1)
{
while((dt = readdir(dir)) != NULL)
{
if(strcmp(dt->d_name,".")==0||strcmp(dt->d_name,"..")==0)
{
continue;
}
//如果这个目录里 还有目录，可以在这加判断
//这里假设初始为空目录
strcat(filename1,dt->d_name);
strcat(filename2,dt->d_name);
//如果进程资源较少可以直接用linux系统命令

fp1 = fopen(filename1,"rb");
if(fp1==NULL)
{
printf("open %s failed /n",filename1);
return -1;
}

fp2 = fopen(filename2,"wb");
if(fp2==NULL)
{
printf("open %s failed /n",filename2);
fclose(fp1);
return -1;
}

while((readsize = fread(buf,sizeof(buf),1,fp1))>0)
{
//total += readsize;
memset(buf,0,sizeof(buf));
writesize = fwrite(buf,sizeof(buf),1,fp2);
if(writesize!==readsize)
{
printf("write error");
return -2;
fclose(fp1);
fclose(fp2);
}
}
fclose(fp1);
fclose(fp2);
rmdir(filename2);
}
}
}

int main(int argc,char **argv)
{
pthread_t id1;
int ret;
ret = pthread_create(&id1, NULL, (void*)movefile, NULL);
return ret;
}
自己调试下