Method write

src/fs/file.rs:207–271

Write

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

	// Write
	fn write(&mut self, buffer: &[u8]) -> Result<usize, ()>
	{
		let bufferlen = buffer.len();
		let mut address = self.address;
		let mut bytes = 0;
		let mut pos = 0;
		while bytes < bufferlen
		{
			let mut blk = LinkBlk::read(address);
			let data = blk.datamut();
			let datalen = data.len();
			for i in 0..datalen
			{
				if pos == self.offset
				{
					if bytes == bufferlen
					{
						break;
					}
					data[i] = buffer[bytes];
					bytes += 1;
					self.offset += 1;
				}
				pos += 1;
			}

			address = match blk.next()
			{
				Some(nextblk) =>
				{
					if bytes < bufferlen
					{
						nextblk.address()
					}
					else
					{
						0
					}
				}

				None =>
				{
					if bytes < bufferlen
					{
						match LinkBlk::alloc()
						{
							Some(nextblk) => nextblk.address(),
							None => return Err(()),
						}
					}
					else
					{
						0
					}
				}
			};

			blk.set_next_address(address);