test

bitarray/src/main.rs

@@ -0,0 +1,30 @@
+use std::io::{stdin, stdout, BufReader, BufWriter, Read};
+
+use bitarray::{binary::Binary, BitArray};
+
+pub fn main() {
+    let stdin = stdin();
+    let stdout = stdout();
+
+    let mut reader = BufReader::new(stdin.lock());
+    let mut writer = BufWriter::new(stdout.lock());
+
+    let mut sample_rate_buffer = [0_u8; 1];
+    reader.read_exact(&mut sample_rate_buffer).map_err(|_| "Could not read the sample rate from the binary file").unwrap();
+
+    let mut bitarray = BitArray::<38>::with_capacity(30_000_000_000);
+
+    // this buffer is 1GiB big
+    let mut index = 0;
+    let mut buffer = [0; 8 * 1024];
+    let mut bytes_read = reader.read(&mut buffer).unwrap();
+    while bytes_read > 0 {
+        for buffer_slice in buffer.chunks_exact(8) {
+            bitarray.set(index, u64::from_le_bytes(buffer_slice.try_into().unwrap()));
+            index += 1;
+        }
+        bytes_read = reader.read(&mut buffer).unwrap();
+    }
+
+    bitarray.write_binary(&mut writer).unwrap();
+}