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#![allow(dead_code)] mod divsufsort; pub fn apply_bwt(data: &mut Vec<u8>) -> i32 { let mut sa = Vec::with_capacity(data.len()); sa.resize(data.len(), 0); let pidx: i32; unsafe { pidx = divsufsort::divbwt(data.as_ptr(), data.as_mut_ptr(), sa.as_mut_ptr(), data.len() as i32); } pidx } pub fn reverse_bwt(data: &mut Vec<u8>, pidx: i32) { let mut sa = Vec::with_capacity(data.len()); sa.resize(data.len(), 0); unsafe { divsufsort::inverse_bw_transform(data.as_ptr(), data.as_mut_ptr(), sa.as_mut_ptr(), data.len() as i32, pidx); } } #[cfg(test)] mod tests { use super::*; use std::fs::File; use std::io::prelude::*; #[test] #[ignore] fn test_with_bwt_cli() { let path = std::env::current_dir().unwrap(); let test = path.join("data/test.s31"); let mut f = File::open(test).unwrap(); let mut data : Vec<u8> = Vec::new(); f.read_to_end(&mut data).unwrap(); let expected_d = data.clone(); let test = path.join("data/test.s31.bwt"); let mut g = File::open(test).unwrap(); let mut expected :Vec<u8> = Vec::new(); g.read_to_end(&mut expected).unwrap(); let pidx = apply_bwt(&mut data); assert_eq!(data, expected.iter().skip(8).map(|&x| x).collect::<Vec<u8>>()); reverse_bwt(&mut data, pidx); assert_eq!(data, expected_d); } #[test] fn test_bwt() { let mut data : Vec<u8> = vec![154,67,101,83,2,2,2,2,2,2,89,99,3,168,234,24,12,34]; let expected = data.clone(); let pidx = apply_bwt(&mut data); reverse_bwt(&mut data, pidx); assert_eq!(data, expected); } }