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use std::fs::rename;
use std::io;
use crate::defaults::*;
use crate::khline::KhLine;
use crate::utils::fileutil;
use crate::KhResult;
use crate::errors::KhError;
pub fn write_to_seqfile(lines: &str) -> io::Result<()> {
let tmpfilename = get_datafile("tmpseq");
fileutil::write_file(&tmpfilename, lines)?;
let seqfile = get_seqfile();
rename(tmpfilename, seqfile)?;
Ok(())
}
pub fn read_seqfile() -> io::Result<impl DoubleEndedIterator<Item = String>> {
let seqfile = get_seqfile();
debug!("Reading sequence file: {}", seqfile.to_string_lossy());
fileutil::read_lines_from_file(&seqfile)
}
pub fn read_seqfile_khlines() -> KhResult<impl DoubleEndedIterator<Item = KhLine>> {
read_seqfile()?
.map(|line| line.parse::<KhLine>())
.collect::<Result<Vec<KhLine>, String>>()
.map_err(KhError::from)
.map(|lines| lines.into_iter())
}
#[cfg(test)]
mod tests {
use super::*;
use crate::testutils::prepare_testdir;
use assert_fs::prelude::*;
use predicates::prelude::*;
use itertools::Itertools;
#[test]
fn read_seqfile_test() {
let testdir = prepare_testdir("testdir_with_seq");
let mut seqfile_read = read_seqfile().unwrap().join("\n");
seqfile_read.push('\n');
let predicate = predicate::str::similar(seqfile_read);
testdir.child(".khaleesi/seq").assert(predicate);
}
#[test]
fn read_seqfile_khlines_test() {
let _testdir = prepare_testdir("testdir_with_seq");
let mut khlines = read_seqfile_khlines().unwrap();
let khline_expected = "1544740200 twodaysacrossbuckets.ics".parse::<KhLine>().unwrap();
assert_eq!(khline_expected, khlines.next().unwrap())
}
#[test]
fn write_to_seqfile_test() {
let testdir = prepare_testdir("testdir");
let teststr = "Teststr äöüß\n";
write_to_seqfile(teststr).unwrap();
testdir.child(".khaleesi/seq").assert(teststr);
}
}
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