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#12 in #gtf
13KB
308 lines
nom-gtf
a parser for gtf built using nom.
This achieves near wc -l
throughput.
Usage
This is meant to be used as an iterator and receives any item implementing BufRead
.
From File
use std::{fs::File, io::BufReader};
use nom_gtf::GtfReader;
let handle = File::open("data/example.gtf")
.map(BufReader::new)
.unwrap();
let num_records = GtfReader::from_bufread(handle)
.filter_map(|x| x.ok())
.count();
assert_eq!(num_records, 10);
From Gzip File
use std::{fs::File, io::BufReader};
use flate2::read::MultiGzDecoder;
use nom_gtf::GtfReader;
let handle = File::open("data/example.gtf.gz")
.map(MultiGzDecoder::new)
.map(BufReader::new)
.unwrap();
let num_records = GtfReader::from_bufread(handle)
.filter_map(|x| x.ok())
.count();
assert_eq!(num_records, 10);
Dependencies
~1.5MB
~26K SLoC