Method read

src/fs/file.rs:171–203

Read

(&mut self, buffer: &mut [u8])

{
	// Read
	fn read(&mut self, buffer: &mut [u8]) -> Result<usize, ()>
	{
		let bufferlen = buffer.len();
		let mut address = self.address;
		let mut bytes = 0;
		let mut pos = 0;

		loop
		{
			let blk = LinkBlk::read(address);
			let data = blk.data();
			let datalen = data.len();
			for i in 0..datalen
			{
				if pos == self.offset
				{
					if bytes == bufferlen || pos as usize == self.size()
					{
						return Ok(bytes);
					}
					buffer[bytes] = data[i];
					bytes += 1;
					self.offset += 1;
				}
				pos += 1;
			}
			match blk.next()
			{
				Some(nextblk) => address = nextblk.address(),
				None => return Ok(bytes),
			}
		}
	}


	// Write