void read(const char*first_file,int first_fd,int readcount)
{
printf("Read content from file %s\n",first_file);
char read_buf[100];
//int readcount=8;
read_buf[readcount]='\0';
int readchar=myfs_file_read(first_fd ,read_buf,readcount);
//if(myfs_file_read(0 ,readbuf,readcount)==readcount)
if(readchar==readcount)
{
printf("read successfully!\n");
}
else
printf("Fail to read in content in file!\n");
printf("this is # of char that has been read in : %d\n",readchar);
//print out the read in content
printf("these are read in content: ");
for(int j=0;j<strlen(read_buf);j++)
{
printf("%c",read_buf[j]);
}
printf("\n");
printf("-------------------------------------------------\n");
}
int main()
{
puts("Create filesystem 1MB filesystem => myfs_create()");
myfs_create("my_fs", 1*MB);
puts("Create file test file => myfs_file_create()");
int create_fd = myfs_file_create("test"); // open the duplicate check after
if(create_fd==-1)
{
puts("create file error");
exit(EXIT_FAILURE);
}
else
myfs_file_close(create_fd);
showPPT();
showEntries(5);
puts("");
puts("Open file => myfs_file_open()");
int fd = myfs_file_open("test");
showPPT();
puts("");
puts("Read dog picture and write to test file => myfs_file_write()");
FILE *fp = fopen("dog.jpg", "rb");
char buf[100*KB];
int filesize = fread(buf, sizeof(char), 100*KB, fp);
fclose(fp);
fp = NULL;
int ret = myfs_file_write(fd, buf, filesize);
printf("Write = %d bytes\n", ret);
puts("Read test file and write to cp_pic.jpg => myfs_file_read()");
char buf2[100*KB];
int ret2 = myfs_file_read(fd, buf2, filesize);
printf("Read = %d bytes\n", ret2);
fp = fopen("cp_pic.jpg", "wb+");
fwrite(buf2, sizeof(char), filesize, fp);
fclose(fp);
fp = NULL;
puts("");
puts("Close test file => myfs_file_close()");
myfs_file_close(fd);
showPPT();
puts("");
puts("Create file1 and file2");
myfs_file_create("file1");
myfs_file_create("file2");
puts("");
puts("Try to create file1 again");
if(myfs_file_create("file1")==-1)
puts(" |=>The file already exist");
puts("");
puts("Delete file1 => myfs_file_delete()");
myfs_file_delete("file1");
puts("");
showEntries(5);
puts("myfs_destroy()");
puts("Do you want to delete the filesystem? y/n");
char ch;
ch = getchar();
if(ch=='y')
myfs_destroy("my_fs");
return 0;
}
