| | | 1 | | using System; |
| | | 2 | | using OsmSharp; |
| | | 3 | | using OsmSharp.Streams.Filters; |
| | | 4 | | |
| | | 5 | | namespace Itinero.IO.Osm.Streams; |
| | | 6 | | |
| | | 7 | | /// <summary> |
| | | 8 | | /// An OSM tags preprocessor. |
| | | 9 | | /// </summary> |
| | | 10 | | internal class OsmGeoTagsPreprocessor : OsmStreamFilter |
| | | 11 | | { |
| | | 12 | | private readonly Func<OsmGeo, bool> _action; |
| | | 13 | | |
| | | 14 | | private OsmGeo? _current; |
| | | 15 | | |
| | 21 | 16 | | public OsmGeoTagsPreprocessor(Func<OsmGeo, bool> action) |
| | 21 | 17 | | { |
| | 21 | 18 | | _action = action; |
| | 21 | 19 | | } |
| | | 20 | | |
| | | 21 | | public override bool MoveNext(bool ignoreNodes, bool ignoreWays, bool ignoreRelations) |
| | 589277 | 22 | | { |
| | 589277 | 23 | | _current = null; |
| | | 24 | | |
| | 728693 | 25 | | while (true) |
| | 728693 | 26 | | { |
| | 728735 | 27 | | if (!this.Source.MoveNext(ignoreNodes, ignoreWays, ignoreRelations)) return false; |
| | | 28 | | |
| | 728651 | 29 | | var current = this.Source.Current(); |
| | 868067 | 30 | | if (!_action(current)) continue; |
| | | 31 | | |
| | 589235 | 32 | | _current = current; |
| | 589235 | 33 | | break; |
| | | 34 | | } |
| | | 35 | | |
| | 589235 | 36 | | return true; |
| | 589277 | 37 | | } |
| | | 38 | | |
| | | 39 | | public override OsmGeo Current() |
| | 589235 | 40 | | { |
| | 589235 | 41 | | if (_current == null) |
| | 0 | 42 | | throw new InvalidOperationException( |
| | 0 | 43 | | $"Current is null, do {nameof(MoveNext)} first."); |
| | | 44 | | |
| | 589235 | 45 | | return _current; |
| | 589235 | 46 | | } |
| | | 47 | | |
| | | 48 | | public override void Reset() |
| | 21 | 49 | | { |
| | 21 | 50 | | this.Source.Reset(); |
| | 21 | 51 | | } |
| | | 52 | | |
| | 0 | 53 | | public override bool CanReset => this.Source.CanReset; |
| | | 54 | | } |