Method GetFileLocation

pkg/index/index.go:1495–1535

(ctx context.Context, fileRef blob.Ref)

}

func (x *Index) GetFileLocation(ctx context.Context, fileRef blob.Ref) (camtypes.Location, error) {
	if x.corpus != nil {
		lat, long, ok := x.corpus.FileLatLong(fileRef)
		if !ok {
			return camtypes.Location{}, os.ErrNotExist
		}
		// TODO(mpl): Brad says to move this check lower, in corpus func and/or when building corpus from index rows.
		if math.IsNaN(long) || math.IsNaN(lat) {
			return camtypes.Location{}, fmt.Errorf("latitude or longitude in corpus for %v is NaN. Reindex to fix it", fileRef)
		}
		return camtypes.Location{Latitude: lat, Longitude: long}, nil
	}
	fi, err := x.GetFileInfo(ctx, fileRef)
	if err != nil {
		return camtypes.Location{}, err
	}
	it := x.queryPrefixString(keyEXIFGPS.Key(fi.WholeRef.String()))
	defer closeIterator(it, &err)
	if !it.Next() {
		return camtypes.Location{}, os.ErrNotExist
	}

	var lat, long float64
	key, v := it.Key(), it.Value()
	pipe := strings.Index(v, "|")
	if pipe < 0 {
		return camtypes.Location{}, fmt.Errorf("index: bogus key %q = %q", key, v)
	}
	lat, err = strconv.ParseFloat(v[:pipe], 64)
	if err != nil {
		return camtypes.Location{}, fmt.Errorf("index: bogus value at position 0 in key %q = %q", key, v)
	}
	long, err = strconv.ParseFloat(v[pipe+1:], 64)
	if err != nil {
		return camtypes.Location{}, fmt.Errorf("index: bogus value at position 1 in key %q = %q", key, v)
	}
	if math.IsNaN(long) || math.IsNaN(lat) {
		return camtypes.Location{}, fmt.Errorf("latitude or longitude in index for %v is NaN. Reindex to fix it", fileRef)
	}
	return camtypes.Location{Latitude: lat, Longitude: long}, nil
}

func (x *Index) EdgesTo(ref blob.Ref, opts *camtypes.EdgesToOpts) (edges []*camtypes.Edge, err error) {
	it := x.queryPrefix(keyEdgeBackward, ref)