1 files changed, 23 insertions, 0 deletions
diff --git a/src/reader.rs b/src/reader.rs
new file mode 100644
index 0000000..b90097c
--- /dev/null
+++ b/src/reader.rs
@@ -0,0 +1,23 @@
+use std::io::{self, prelude::*};
+
+pub struct BufReader<R> {
+    reader: io::BufReader<R>,
+}
+
+impl<R: Read> BufReader<R> {
+    pub fn new(f: R) -> Self {
+        Self { reader: io::BufReader::new(f) }
+    }
+
+    pub fn read_line<'buf>(
+        &mut self,
+        buffer: &'buf mut String,
+    ) -> Option<io::Result<&'buf mut String>> {
+        buffer.clear();
+
+        self.reader
+            .read_line(buffer)
+            .map(|u| if u == 0 { None } else { Some(buffer) })
+            .transpose()
+    }
+}