split off seqfile handling from seq.rs

1 files changed, 28 insertions, 0 deletions

diff --git a/src/seqfile.rs b/src/seqfile.rs
new file mode 100644
index 0000000..1f1abc8
--- /dev/null
+++ b/src/seqfile.rs
@@ -0,0 +1,28 @@
+extern crate atty;
+
+use std::fs::rename;
+use std::io;
+
+use defaults::*;
+use utils::fileutil;
+
+pub fn write_to_seqfile(lines: &str) {
+  let tmpfilename = get_datafile("tmpseq");
+
+  if let Err(error) = fileutil::write_file(&tmpfilename, lines) {
+    error!("Could not write seqfile: {}", error);
+    return
+  }
+
+  let seqfile = get_seqfile();
+  if let Err(error) = rename(tmpfilename, seqfile) {
+    error!("{}", error)
+  }
+}
+
+pub fn read_seqfile() -> io::Result<impl Iterator<Item = String>> {
+  let seqfile = get_seqfile();
+  debug!("Reading sequence file: {}", seqfile.to_string_lossy());
+  fileutil::read_lines_from_file(&seqfile)
+}
+