use buffer::Buffer;
use yencode::Yencode;
use fmt::*;
+use time::Time;
pub const MEMORY_SIZE: usize = 2 << 20;
const SECTOR_SIZE: usize = 4 << 10;
}
pub struct Logger<'a> {
- storage: &'a mut dyn Storage,
+ pub storage: &'a mut dyn Storage,
recording_id: u16, // Zero is considered invalid.
fn read_sector_header(&mut self, sector_index: usize) {
let address = sector_index * SECTOR_SIZE;
- let mut chunk = [0u8; 4];
+ let mut chunk = [0u8; 8];
self.storage.read(address, &mut chunk);
let this_sector = self.first_sector + self.sectors_written;
- self.storage.write(this_sector as usize * SECTOR_SIZE,
- &self.write_buffer);
+ if self.storage.write(this_sector as usize * SECTOR_SIZE,
+ &self.write_buffer).is_err() {
+ // XXX
+ }
self.sectors_written += 1;
// our buffer with 0xff, so we don't need to do anything here.
let this_sector = self.first_sector + self.sectors_written;
- self.storage.write(this_sector as usize * SECTOR_SIZE,
- &self.write_buffer);
+ if self.storage.write(this_sector as usize * SECTOR_SIZE,
+ &self.write_buffer).is_err() {
+ // XXX
+ }
self.sectors_written += 1;
self.write_buffer_offset += num_bytes_written;
}
+ ///
+ /// Write a listing of the stored recordings to @p tx_buf.
+ pub fn list_recordings(&mut self, tx_buf: &mut Buffer) {
+ for index in self.sector_header_iter().rev() {
+ let sector_header = &self.sector_header[index as usize];
+
+ if !sector_header.starts_recording() {
+ continue;
+ }
+
+ let mut date_time_s = [b' '; 19];
+
+ if let Some(tm) = Time::from_unix_time(sector_header.start_time) {
+ tm.fmt_date(&mut date_time_s[0..]);
+ tm.fmt_time(&mut date_time_s[11..]);
+ }
+
+ let mut recording_id_s = [b'0'; 9];
+ let recording_id_s_len =
+ fmt_u32_pad(&mut recording_id_s,
+ sector_header.recording_id as u32,
+ 8, b' ');
+
+ tx_buf.write(&date_time_s);
+ tx_buf.write(b" ");
+ tx_buf.write(&recording_id_s[0..recording_id_s_len]);
+ tx_buf.write(b"\n");
+
+ tx_buf.flush();
+ }
+ }
+
+ ///
+ /// Check whether or not recording @p recording_id exists.
+ pub fn has_recording(&mut self, recording_id: u16) -> bool {
+ if recording_id == 0 {
+ return false;
+ }
+
+ self.sector_header_iter().find(|&index| {
+ let sector_header = &self.sector_header[index as usize];
+
+ sector_header.recording_id == recording_id &&
+ sector_header.starts_recording()
+ }).is_some()
+ }
+
///
/// Retrieve recording @p recording_id and
/// write it to @p tx_buf in yencoded form.