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gpx-rs/src/engine/command/pattern/copy.rs

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+use crate::{File, Track, TrackSegment, Waypoint};
+
+// The trackpoints of a segment are shared chunks, so copying elements is cheap.
+
+/// A copy of the segment, with a new id.
+pub fn copy_segment(segment: &TrackSegment) -> TrackSegment {
+    let mut copy = segment.clone();
+    copy.id = Default::default();
+    copy
+}
+
+/// A copy of the track and of its segments, with new ids.
+pub fn copy_track(track: &Track) -> Track {
+    Track {
+        id: Default::default(),
+        trkseg: track.trkseg.iter().map(copy_segment).collect(),
+        ..track.clone()
+    }
+}
+
+/// A copy of the file and of its tracks and segments, with new ids.
+pub fn copy_file(file: &File) -> File {
+    File {
+        id: Default::default(),
+        trk: file.trk.iter().map(copy_track).collect(),
+        ..file.clone()
+    }
+}
+
+/// A copy of the waypoint, with a new id.
+pub fn copy_waypoint(waypoint: &Waypoint) -> Waypoint {
+    let mut copy = waypoint.clone();
+    copy.id = Default::default();
+    copy
+}