mirror of https://github.com/tidwall/tile38.git
699 lines
17 KiB
Go
699 lines
17 KiB
Go
package server
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import (
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"bytes"
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"errors"
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"fmt"
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"strconv"
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"strings"
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"time"
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"github.com/iwpnd/sectr"
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"github.com/mmcloughlin/geohash"
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"github.com/tidwall/geojson"
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"github.com/tidwall/geojson/geometry"
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"github.com/tidwall/resp"
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"github.com/tidwall/tile38/internal/bing"
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"github.com/tidwall/tile38/internal/clip"
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"github.com/tidwall/tile38/internal/glob"
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)
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const defaultCircleSteps = 64
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type liveFenceSwitches struct {
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searchScanBaseTokens
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obj geojson.Object
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cmd string
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roam roamSwitches
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}
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type roamSwitches struct {
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on bool
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key string
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id string
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pattern bool
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meters float64
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scan string
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}
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type roamMatch struct {
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id string
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obj geojson.Object
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meters float64
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}
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func (s liveFenceSwitches) Error() string {
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return goingLive
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}
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func (s liveFenceSwitches) Close() {
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for _, whereeval := range s.whereevals {
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whereeval.Close()
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}
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}
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func (s liveFenceSwitches) usingLua() bool {
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return len(s.whereevals) > 0
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}
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func parseRectArea(ltyp string, vs []string) (nvs []string, rect *geojson.Rect, err error) {
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var ok bool
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switch ltyp {
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default:
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err = errNotRectangle
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return
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case "bounds":
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var sminLat, sminLon, smaxlat, smaxlon string
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if vs, sminLat, ok = tokenval(vs); !ok || sminLat == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if vs, sminLon, ok = tokenval(vs); !ok || sminLon == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if vs, smaxlat, ok = tokenval(vs); !ok || smaxlat == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if vs, smaxlon, ok = tokenval(vs); !ok || smaxlon == "" {
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err = errInvalidNumberOfArguments
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return
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}
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var minLat, minLon, maxLat, maxLon float64
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if minLat, err = strconv.ParseFloat(sminLat, 64); err != nil {
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err = errInvalidArgument(sminLat)
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return
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}
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if minLon, err = strconv.ParseFloat(sminLon, 64); err != nil {
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err = errInvalidArgument(sminLon)
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return
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}
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if maxLat, err = strconv.ParseFloat(smaxlat, 64); err != nil {
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err = errInvalidArgument(smaxlat)
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return
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}
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if maxLon, err = strconv.ParseFloat(smaxlon, 64); err != nil {
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err = errInvalidArgument(smaxlon)
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return
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}
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rect = geojson.NewRect(geometry.Rect{
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Min: geometry.Point{X: minLon, Y: minLat},
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Max: geometry.Point{X: maxLon, Y: maxLat},
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})
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case "hash":
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var hash string
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if vs, hash, ok = tokenval(vs); !ok || hash == "" {
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err = errInvalidNumberOfArguments
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return
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}
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box := geohash.BoundingBox(hash)
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rect = geojson.NewRect(geometry.Rect{
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Min: geometry.Point{X: box.MinLng, Y: box.MinLat},
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Max: geometry.Point{X: box.MaxLng, Y: box.MaxLat},
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})
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case "quadkey":
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var key string
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if vs, key, ok = tokenval(vs); !ok || key == "" {
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err = errInvalidNumberOfArguments
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return
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}
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var minLat, minLon, maxLat, maxLon float64
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minLat, minLon, maxLat, maxLon, err = bing.QuadKeyToBounds(key)
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if err != nil {
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err = errInvalidArgument(key)
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return
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}
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rect = geojson.NewRect(geometry.Rect{
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Min: geometry.Point{X: minLon, Y: minLat},
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Max: geometry.Point{X: maxLon, Y: maxLat},
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})
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case "tile":
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var sx, sy, sz string
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if vs, sx, ok = tokenval(vs); !ok || sx == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if vs, sy, ok = tokenval(vs); !ok || sy == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if vs, sz, ok = tokenval(vs); !ok || sz == "" {
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err = errInvalidNumberOfArguments
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return
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}
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var x, y int64
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var z uint64
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if x, err = strconv.ParseInt(sx, 10, 64); err != nil {
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err = errInvalidArgument(sx)
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return
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}
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if y, err = strconv.ParseInt(sy, 10, 64); err != nil {
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err = errInvalidArgument(sy)
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return
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}
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if z, err = strconv.ParseUint(sz, 10, 64); err != nil {
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err = errInvalidArgument(sz)
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return
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}
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var minLat, minLon, maxLat, maxLon float64
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minLat, minLon, maxLat, maxLon = bing.TileXYToBounds(x, y, z)
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rect = geojson.NewRect(geometry.Rect{
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Min: geometry.Point{X: minLon, Y: minLat},
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Max: geometry.Point{X: maxLon, Y: maxLat},
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})
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}
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nvs = vs
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return
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}
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func (server *Server) cmdSearchArgs(
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fromFenceCmd bool, cmd string, vs []string, types []string,
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) (s liveFenceSwitches, err error) {
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var t searchScanBaseTokens
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if fromFenceCmd {
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t.fence = true
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}
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vs, t, err = server.parseSearchScanBaseTokens(cmd, t, vs)
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if err != nil {
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return
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}
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s.searchScanBaseTokens = t
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var typ string
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var ok bool
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if vs, typ, ok = tokenval(vs); !ok || typ == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if s.searchScanBaseTokens.output == outputBounds {
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if cmd == "within" || cmd == "intersects" {
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if _, err := strconv.ParseFloat(typ, 64); err == nil {
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// It's likely that the output was not specified, but rather the search bounds.
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s.searchScanBaseTokens.output = defaultSearchOutput
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vs = append([]string{typ}, vs...)
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typ = "BOUNDS"
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}
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}
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}
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ltyp := strings.ToLower(typ)
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var found bool
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for _, t := range types {
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if ltyp == t {
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found = true
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break
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}
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}
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if !found && s.searchScanBaseTokens.fence && ltyp == "roam" && cmd == "nearby" {
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// allow roaming for nearby fence searches.
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found = true
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}
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if !found {
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err = errInvalidArgument(typ)
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return
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}
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switch ltyp {
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case "point":
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fallthrough
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case "circle":
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if s.clip {
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err = errInvalidArgument("cannot clip with " + ltyp)
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return
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}
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var slat, slon, smeters string
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if vs, slat, ok = tokenval(vs); !ok || slat == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if vs, slon, ok = tokenval(vs); !ok || slon == "" {
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err = errInvalidNumberOfArguments
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return
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}
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var lat, lon, meters float64
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if lat, err = strconv.ParseFloat(slat, 64); err != nil {
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err = errInvalidArgument(slat)
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return
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}
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if lon, err = strconv.ParseFloat(slon, 64); err != nil {
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err = errInvalidArgument(slon)
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return
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}
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// radius is optional for nearby, but mandatory for others
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if cmd == "nearby" {
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if vs, smeters, ok = tokenval(vs); ok && smeters != "" {
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if meters, err = strconv.ParseFloat(smeters, 64); err != nil {
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err = errInvalidArgument(smeters)
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return
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}
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if meters < 0 {
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err = errInvalidArgument(smeters)
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return
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}
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} else {
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meters = -1
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}
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} else {
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if vs, smeters, ok = tokenval(vs); !ok || smeters == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if meters, err = strconv.ParseFloat(smeters, 64); err != nil {
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err = errInvalidArgument(smeters)
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return
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}
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if meters < 0 {
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err = errInvalidArgument(smeters)
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return
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}
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}
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s.obj = geojson.NewCircle(geometry.Point{X: lon, Y: lat}, meters, defaultCircleSteps)
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case "object":
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if s.clip {
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err = errInvalidArgument("cannot clip with object")
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return
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}
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var obj string
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if vs, obj, ok = tokenval(vs); !ok || obj == "" {
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err = errInvalidNumberOfArguments
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return
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}
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s.obj, err = geojson.Parse(obj, &server.geomParseOpts)
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if err != nil {
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return
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}
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case "sector":
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if s.clip {
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err = errInvalidArgument("cannot clip with " + ltyp)
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return
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}
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var slat, slon, smeters, sb1, sb2 string
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if vs, slat, ok = tokenval(vs); !ok || slat == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if vs, slon, ok = tokenval(vs); !ok || slon == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if vs, smeters, ok = tokenval(vs); !ok || smeters == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if vs, sb1, ok = tokenval(vs); !ok || sb1 == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if vs, sb2, ok = tokenval(vs); !ok || sb2 == "" {
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err = errInvalidNumberOfArguments
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return
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}
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var lat, lon, meters, b1, b2 float64
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if lat, err = strconv.ParseFloat(slat, 64); err != nil {
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err = errInvalidArgument(slat)
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return
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}
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if lon, err = strconv.ParseFloat(slon, 64); err != nil {
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err = errInvalidArgument(slon)
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return
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}
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if meters, err = strconv.ParseFloat(smeters, 64); err != nil {
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err = errInvalidArgument(smeters)
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return
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}
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if b1, err = strconv.ParseFloat(sb1, 64); err != nil {
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err = errInvalidArgument(sb1)
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return
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}
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if b2, err = strconv.ParseFloat(sb2, 64); err != nil {
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err = errInvalidArgument(sb2)
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return
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}
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if b1 == b2 {
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err = fmt.Errorf("equal bearings (%s == %s), use CIRCLE instead", sb1, sb2)
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return
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}
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origin := sectr.Point{Lng: lon, Lat: lat}
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sector := sectr.NewSector(origin, meters, b1, b2)
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s.obj, err = geojson.Parse(string(sector.JSON()), &server.geomParseOpts)
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if err != nil {
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return
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}
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case "bounds", "hash", "tile", "quadkey":
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vs, s.obj, err = parseRectArea(ltyp, vs)
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if err != nil {
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return
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}
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case "get":
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if s.clip {
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err = errInvalidArgument("cannot clip with get")
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}
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var key, id string
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if vs, key, ok = tokenval(vs); !ok || key == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if vs, id, ok = tokenval(vs); !ok || id == "" {
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err = errInvalidNumberOfArguments
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return
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}
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col := server.getCol(key)
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if col == nil {
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err = errKeyNotFound
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return
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}
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s.obj, _, _, ok = col.Get(id)
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if !ok {
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err = errIDNotFound
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return
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}
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case "roam":
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s.roam.on = true
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if vs, s.roam.key, ok = tokenval(vs); !ok || s.roam.key == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if vs, s.roam.id, ok = tokenval(vs); !ok || s.roam.id == "" {
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err = errInvalidNumberOfArguments
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return
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}
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s.roam.pattern = glob.IsGlob(s.roam.id)
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var smeters string
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if vs, smeters, ok = tokenval(vs); !ok || smeters == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if s.roam.meters, err = strconv.ParseFloat(smeters, 64); err != nil {
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err = errInvalidArgument(smeters)
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return
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}
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var scan string
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if vs, scan, ok = tokenval(vs); ok {
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if strings.ToLower(scan) != "scan" {
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err = errInvalidArgument(scan)
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return
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}
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if vs, scan, ok = tokenval(vs); !ok || scan == "" {
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err = errInvalidNumberOfArguments
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return
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}
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s.roam.scan = scan
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}
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}
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var clip_rect *geojson.Rect
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var tok, ltok string
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for len(vs) > 0 {
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if vs, tok, ok = tokenval(vs); !ok || tok == "" {
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err = errInvalidNumberOfArguments
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return
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}
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if strings.ToLower(tok) != "clipby" {
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err = errInvalidNumberOfArguments
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return
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}
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if vs, tok, ok = tokenval(vs); !ok || tok == "" {
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err = errInvalidNumberOfArguments
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return
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}
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ltok = strings.ToLower(tok)
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switch ltok {
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case "bounds", "hash", "tile", "quadkey":
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vs, clip_rect, err = parseRectArea(ltok, vs)
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if err == errNotRectangle {
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err = errInvalidArgument("cannot clipby " + ltok)
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return
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}
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if err != nil {
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return
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}
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s.obj = clip.Clip(s.obj, clip_rect, &server.geomIndexOpts)
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default:
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err = errInvalidArgument("cannot clipby " + ltok)
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return
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}
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}
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return
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}
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var nearbyTypes = []string{"point"}
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var withinOrIntersectsTypes = []string{
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"geo", "bounds", "hash", "tile", "quadkey", "get", "object", "circle", "sector"}
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func (server *Server) cmdNearby(msg *Message) (res resp.Value, err error) {
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start := time.Now()
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vs := msg.Args[1:]
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wr := &bytes.Buffer{}
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s, err := server.cmdSearchArgs(false, "nearby", vs, nearbyTypes)
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if s.usingLua() {
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defer s.Close()
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defer func() {
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if r := recover(); r != nil {
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res = NOMessage
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err = errors.New(r.(string))
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return
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}
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}()
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}
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if err != nil {
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return NOMessage, err
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}
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s.cmd = "nearby"
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if s.fence {
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return NOMessage, s
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}
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sw, err := server.newScanWriter(
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wr, msg, s.key, s.output, s.precision, s.glob, false,
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s.cursor, s.limit, s.wheres, s.whereins, s.whereevals, s.nofields)
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if err != nil {
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return NOMessage, err
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}
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if msg.OutputType == JSON {
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wr.WriteString(`{"ok":true`)
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}
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sw.writeHead()
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if sw.col != nil {
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iterStep := func(id string, o geojson.Object, fields []float64, meters float64) bool {
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return sw.writeObject(ScanWriterParams{
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id: id,
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o: o,
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fields: fields,
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distance: meters,
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distOutput: s.distance,
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noLock: true,
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ignoreGlobMatch: true,
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skipTesting: true,
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})
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}
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maxDist := s.obj.(*geojson.Circle).Meters()
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if s.sparse > 0 {
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if maxDist < 0 {
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// error cannot use SPARSE and KNN together
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return NOMessage,
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errors.New("cannot use SPARSE without a point distance")
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}
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// An intersects operation is required for SPARSE
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iter := func(id string, o geojson.Object, fields []float64) bool {
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var meters float64
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if s.distance {
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meters = o.Distance(s.obj)
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}
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return iterStep(id, o, fields, meters)
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}
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sw.col.Intersects(s.obj, s.sparse, sw, msg.Deadline, iter)
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} else {
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iter := func(id string, o geojson.Object, fields []float64, dist float64) bool {
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if maxDist > 0 && dist > maxDist {
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return false
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}
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var meters float64
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if s.distance {
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meters = dist
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}
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return iterStep(id, o, fields, meters)
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}
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sw.col.Nearby(s.obj, sw, msg.Deadline, iter)
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}
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}
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sw.writeFoot()
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if msg.OutputType == JSON {
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wr.WriteString(`,"elapsed":"` + time.Since(start).String() + "\"}")
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return resp.BytesValue(wr.Bytes()), nil
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}
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return sw.respOut, nil
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}
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func (server *Server) cmdWithin(msg *Message) (res resp.Value, err error) {
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return server.cmdWithinOrIntersects("within", msg)
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}
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func (server *Server) cmdIntersects(msg *Message) (res resp.Value, err error) {
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return server.cmdWithinOrIntersects("intersects", msg)
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}
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func (server *Server) cmdWithinOrIntersects(cmd string, msg *Message) (res resp.Value, err error) {
|
|
start := time.Now()
|
|
vs := msg.Args[1:]
|
|
|
|
wr := &bytes.Buffer{}
|
|
s, err := server.cmdSearchArgs(false, cmd, vs, withinOrIntersectsTypes)
|
|
if s.usingLua() {
|
|
defer s.Close()
|
|
defer func() {
|
|
if r := recover(); r != nil {
|
|
res = NOMessage
|
|
err = errors.New(r.(string))
|
|
return
|
|
}
|
|
}()
|
|
}
|
|
if err != nil {
|
|
return NOMessage, err
|
|
}
|
|
s.cmd = cmd
|
|
if s.fence {
|
|
return NOMessage, s
|
|
}
|
|
sw, err := server.newScanWriter(
|
|
wr, msg, s.key, s.output, s.precision, s.glob, false,
|
|
s.cursor, s.limit, s.wheres, s.whereins, s.whereevals, s.nofields)
|
|
if err != nil {
|
|
return NOMessage, err
|
|
}
|
|
if msg.OutputType == JSON {
|
|
wr.WriteString(`{"ok":true`)
|
|
}
|
|
sw.writeHead()
|
|
if sw.col != nil {
|
|
if cmd == "within" {
|
|
sw.col.Within(s.obj, s.sparse, sw, msg.Deadline, func(
|
|
id string, o geojson.Object, fields []float64,
|
|
) bool {
|
|
return sw.writeObject(ScanWriterParams{
|
|
id: id,
|
|
o: o,
|
|
fields: fields,
|
|
noLock: true,
|
|
})
|
|
})
|
|
} else if cmd == "intersects" {
|
|
sw.col.Intersects(s.obj, s.sparse, sw, msg.Deadline, func(
|
|
id string,
|
|
o geojson.Object,
|
|
fields []float64,
|
|
) bool {
|
|
params := ScanWriterParams{
|
|
id: id,
|
|
o: o,
|
|
fields: fields,
|
|
noLock: true,
|
|
}
|
|
if s.clip {
|
|
params.clip = s.obj
|
|
}
|
|
return sw.writeObject(params)
|
|
})
|
|
}
|
|
}
|
|
sw.writeFoot()
|
|
if msg.OutputType == JSON {
|
|
wr.WriteString(`,"elapsed":"` + time.Since(start).String() + "\"}")
|
|
return resp.BytesValue(wr.Bytes()), nil
|
|
}
|
|
return sw.respOut, nil
|
|
}
|
|
|
|
func (server *Server) cmdSeachValuesArgs(vs []string) (
|
|
s liveFenceSwitches, err error,
|
|
) {
|
|
var t searchScanBaseTokens
|
|
vs, t, err = server.parseSearchScanBaseTokens("search", t, vs)
|
|
if err != nil {
|
|
return
|
|
}
|
|
s.searchScanBaseTokens = t
|
|
if len(vs) != 0 {
|
|
err = errInvalidNumberOfArguments
|
|
return
|
|
}
|
|
return
|
|
}
|
|
|
|
func (server *Server) cmdSearch(msg *Message) (res resp.Value, err error) {
|
|
start := time.Now()
|
|
vs := msg.Args[1:]
|
|
|
|
wr := &bytes.Buffer{}
|
|
s, err := server.cmdSeachValuesArgs(vs)
|
|
if s.usingLua() {
|
|
defer s.Close()
|
|
defer func() {
|
|
if r := recover(); r != nil {
|
|
res = NOMessage
|
|
err = errors.New(r.(string))
|
|
return
|
|
}
|
|
}()
|
|
}
|
|
if err != nil {
|
|
return NOMessage, err
|
|
}
|
|
sw, err := server.newScanWriter(
|
|
wr, msg, s.key, s.output, s.precision, s.glob, true,
|
|
s.cursor, s.limit, s.wheres, s.whereins, s.whereevals, s.nofields)
|
|
if err != nil {
|
|
return NOMessage, err
|
|
}
|
|
if msg.OutputType == JSON {
|
|
wr.WriteString(`{"ok":true`)
|
|
}
|
|
sw.writeHead()
|
|
if sw.col != nil {
|
|
if sw.output == outputCount && len(sw.wheres) == 0 && sw.globEverything {
|
|
count := sw.col.Count() - int(s.cursor)
|
|
if count < 0 {
|
|
count = 0
|
|
}
|
|
sw.count = uint64(count)
|
|
} else {
|
|
g := glob.Parse(sw.globPattern, s.desc)
|
|
if g.Limits[0] == "" && g.Limits[1] == "" {
|
|
sw.col.SearchValues(s.desc, sw, msg.Deadline,
|
|
func(id string, o geojson.Object, fields []float64) bool {
|
|
return sw.writeObject(ScanWriterParams{
|
|
id: id,
|
|
o: o,
|
|
fields: fields,
|
|
noLock: true,
|
|
})
|
|
},
|
|
)
|
|
} else {
|
|
// must disable globSingle for string value type matching because
|
|
// globSingle is only for ID matches, not values.
|
|
sw.globSingle = false
|
|
sw.col.SearchValuesRange(g.Limits[0], g.Limits[1], s.desc, sw,
|
|
msg.Deadline,
|
|
func(id string, o geojson.Object, fields []float64) bool {
|
|
return sw.writeObject(ScanWriterParams{
|
|
id: id,
|
|
o: o,
|
|
fields: fields,
|
|
noLock: true,
|
|
})
|
|
},
|
|
)
|
|
}
|
|
}
|
|
}
|
|
sw.writeFoot()
|
|
if msg.OutputType == JSON {
|
|
wr.WriteString(`,"elapsed":"` + time.Since(start).String() + "\"}")
|
|
return resp.BytesValue(wr.Bytes()), nil
|
|
}
|
|
return sw.respOut, nil
|
|
}
|