noodles_fasta/io/reader/
builder.rs

1use std::{
2    fs::File,
3    io::{self, BufRead, BufReader},
4    path::Path,
5};
6
7use noodles_bgzf as bgzf;
8
9use super::Reader;
10
11/// A FASTA reader builder.
12#[derive(Debug, Default)]
13pub struct Builder;
14
15impl Builder {
16    /// Builds a FASTA reader from a path.
17    pub fn build_from_path<P>(self, src: P) -> io::Result<Reader<Box<dyn BufRead>>>
18    where
19        P: AsRef<Path>,
20    {
21        let src = src.as_ref();
22
23        let file = File::open(src)?;
24
25        let reader: Box<dyn BufRead> = match src.extension().and_then(|ext| ext.to_str()) {
26            Some("gz" | "bgz") => Box::new(bgzf::Reader::new(file)),
27            _ => Box::new(BufReader::new(file)),
28        };
29
30        self.build_from_reader(reader)
31    }
32
33    /// Builds a FASTA reader from a reader.
34    pub fn build_from_reader<R>(self, reader: R) -> io::Result<Reader<R>>
35    where
36        R: BufRead,
37    {
38        Ok(Reader::new(reader))
39    }
40}
noodles_fasta/io/reader/builder.rs

noodles_fasta/io/reader/
builder.rs
