fsmisc done

src/filesys/filesys.rs

@@ -0,0 +1,6 @@
+
+
+pub struct Filesys {
+    pub free_map_file : Open_File, //Bit map of free disk blocks, represented as a file
+    pub directory_file : Open_file //"Root" directory -- list of file names, represented as a file
+}

src/filesys/fsmisc.rs

@@ -0,0 +1,66 @@
+use std::{fs::File, io::{Seek, SeekFrom, Read}};
+
+use super::filesys;
+
+pub const TRANSFER_SIZE: usize = 10;
+
+/// copy the contents of the UNIX file "from" to the Nachos file "to"
+/// 
+/// `panic!` when the file from doesn't exist
+/// 
+/// - **from** file UNIX
+/// - **to** BurritOS file
+pub fn copy(from : &str, to : &str) {
+
+    let file_from_opt = File::options().read(true).open(from);
+    let mut file_from : File;
+    match file_from_opt {
+        Err(e) => {
+            panic!("Copy: couldn't open Unix file {}", from);
+        }
+
+        Ok(f) => {
+            file_from = f;
+        }
+    }
+
+    let mut file_length_buf = [0; 1];
+    file_from.seek(SeekFrom::End(2));
+    file_from.read(&mut file_length_buf);
+    file_from.seek(SeekFrom::Start(0));
+    let file_length = file_length_buf[0];
+
+    filesys::create(to, file_length);
+    let open_file = filesys::open(to);
+
+    let mut buffer = [0; TRANSFER_SIZE];
+    loop {
+        let amount_read = file_from.read(&mut buffer).expect("copy : couldn't read the UNIX file");
+        open_file.write(&buffer[..amount_read]);
+
+        if amount_read != TRANSFER_SIZE {
+            break;
+        }
+    }
+}
+
+/// Print the contents of the Nachos file "name".
+/// 
+/// `panic!` when the file name doewn't exist
+/// 
+/// - **name** of the BurritOS file
+pub fn print(name : &str) {
+    let open_file = filesys::open(name);
+
+    let mut buffer = [0; TRANSFER_SIZE];
+    loop {
+        let amount_read = open_file.read(&mut buffer);
+        for i in 0..amount_read {
+            print!("{:1x} ", buffer[i]);
+        }
+
+        if amount_read != TRANSFER_SIZE {
+            break;
+        }
+    }
+}

src/filesys/mod.rs

@@ -0,0 +1,2 @@
+pub mod fsmisc;
+pub mod filesys;

src/main.rs

@@ -14,6 +14,7 @@ mod kernel;
 pub mod utility;
 /// module containing drivers 
 pub mod drivers;
+mod filesys;
 
 use std::{rc::Rc, cell::RefCell};
 
@@ -22,9 +23,11 @@ use simulator::{machine::Machine, print::print};
 
 use drivers::drv_disk::DrvDisk;
 use simulator::disk::Disk;
-
+use filesys::fsmisc;
 
 fn main() {
+    fsmisc::copy("ici", "là");
+    /*
     let machine = Machine::init_machine();
     let system = Rc::new(RefCell::new(System::new(machine)));
 
@@ -49,4 +52,5 @@ fn main() {
     }
 
     System::freeze(system);
+    */
 }