Super basic header parser

1 files changed, 23 insertions, 1 deletions

diff --git a/src/lib.rs b/src/lib.rs
index cdfbe1a..999e89f 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,6 +1,28 @@
+#[derive(Debug)]
+pub struct MailHeader<'a> {
+    name: &'a str,
+    value: &'a str,
+}
+
+#[derive(Debug)]
+pub struct MailParseError {
+    description: String,
+    position: usize,
+}
+
+pub fn parse_header(raw_data : &str) -> Result<MailHeader, MailParseError> {
+    let ix = raw_data.find(':').ok_or(MailParseError { description: "No ':' found in header".to_string(), position: raw_data.len() });
+    return ix.map(|ix| MailHeader { name: &raw_data[0..ix], value: &raw_data[ix + 1 ..] });
+}
+
 #[cfg(test)]
 mod tests {
+    use super::*;
+
     #[test]
-    fn it_works() {
+    fn parse_basic_header() {
+        let parsed = parse_header("Key: Value").expect("");
+        assert_eq!(parsed.name, "Key");
+        assert_eq!(parsed.value, " Value");
     }
 }