1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
extern crate regex;
use std::fs::{read_to_string, read};
use std::path::{Path, PathBuf};
use std::collections::HashMap;
pub mod header;
pub mod signal;
pub fn parse_wfdb(header_path: &str) -> (header::Header, Vec<Vec<i16>>) {
let header_path = Path::new(header_path);
let header = header::read_header(&read_to_string(header_path).unwrap());
let mut signals = vec![];
let data_directory = header_path.parent().unwrap();
let mut parsed_files = HashMap::new();
for signal in &header.signal_specs {
let signal_path = PathBuf::from(&signal.filename);
if parsed_files.get(&signal_path) == None {
let buf = if (&signal_path).is_absolute() {
read(&signal_path).unwrap()
} else {
let full_path = data_directory.join(&signal_path);
read(&full_path).unwrap()
};
parsed_files.insert(signal_path, buf);
}
let signal_path = PathBuf::from(&signal.filename);
parsed_files.entry(signal_path).and_modify(|buf| {
if let Some(num_samples) = header.record.samples_per_signal {
let num_bytes = num_samples as f32 * 1.5;
signals.push(signal::parse_212_format(&buf[..num_bytes as usize]));
*buf = buf[num_bytes as usize..].to_vec();
}
});
}
(header, signals)
}