Trim header column names, added Metra test (#152)

* Trim header column names, added Metra test

Metra would not load and I was getting complaints about that.
The header looks like
stop_id, stop_name, stop_desc, stop_lat, stop_lon, zone_id, stop_url, wheelchair_boarding
and thus ` stop_name` is not eq to `stop_name`.

This resolves this issue by trimming the header column names for every file.

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 description = "Read GTFS (public transit timetables) files"
 name = "gtfs-structures"
-version = "0.39.0"
+version = "0.39.1"
 authors = ["Tristram Gräbener <[email protected]>", "Antoine Desbordes <[email protected]>"]
 repository = "https://github.com/rust-transit/gtfs-structure"
 license = "MIT"

src/gtfs_reader.rs

@@ -353,7 +353,10 @@ impl RawGtfsReader {
                 source: e,
                 line_in_error: None,
             })?
-            .clone();
+            .clone()
+            .into_iter()
+            .map(|x| x.trim())
+            .collect::<csv::StringRecord>();
 
         // Pre-allocate a StringRecord for performance reasons
         let mut rec = csv::StringRecord::new();

src/tests.rs

@@ -437,6 +437,20 @@ fn read_only_required_fields() {
     )
 }
 
+#[test]
+fn metra_gtfs() {
+    let gtfs = Gtfs::from_path("fixtures/zips/metra.zip");
+
+    match &gtfs {
+        Err(err) => {
+            eprintln!("{:#?}", err);
+        }
+        _ => {}
+    }
+
+    assert!(gtfs.is_ok());
+}
+
 #[test]
 fn sorted_shapes() {
     let gtfs = Gtfs::from_path("fixtures/basic").expect("impossible to read gtfs");