111 lines
2.5 KiB
Go
111 lines
2.5 KiB
Go
package mapping
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import (
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"imposm3/element"
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)
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func (m *Mapping) PointMatcher() *TagMatcher {
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mappings := make(TagTables)
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m.mappings("point", mappings)
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filters := m.ElementFilters()
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return &TagMatcher{mappings, m.tables("point"), filters}
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}
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func (m *Mapping) LineStringMatcher() *TagMatcher {
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mappings := make(TagTables)
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m.mappings("linestring", mappings)
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filters := m.ElementFilters()
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return &TagMatcher{mappings, m.tables("linestring"), filters}
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}
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func (m *Mapping) PolygonMatcher() *TagMatcher {
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mappings := make(TagTables)
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m.mappings("polygon", mappings)
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filters := m.ElementFilters()
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return &TagMatcher{mappings, m.tables("polygon"), filters}
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}
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type TagMatcher struct {
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mappings TagTables
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tables map[string]*TableFields
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filters map[string][]ElementFilter
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}
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type Match struct {
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Key string
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Value string
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Table DestTable
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tableFields *TableFields
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}
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func (m *Match) Row(elem *element.OSMElem) []interface{} {
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return m.tableFields.MakeRow(elem, *m)
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}
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func (tagMatcher *TagMatcher) Match(tags *element.Tags) []Match {
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tables := make(map[DestTable]Match)
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for k, v := range *tags {
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values, ok := tagMatcher.mappings[Key(k)]
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if ok {
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if tbls, ok := values["__any__"]; ok {
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for _, t := range tbls {
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tables[t] = Match{k, v, t, tagMatcher.tables[t.Name]}
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}
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}
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if tbls, ok := values[Value(v)]; ok {
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for _, t := range tbls {
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tables[t] = Match{k, v, t, tagMatcher.tables[t.Name]}
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}
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}
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}
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}
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var matches []Match
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for t, match := range tables {
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filters, ok := tagMatcher.filters[t.Name]
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filteredOut := false
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if ok {
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for _, filter := range filters {
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if !filter(tags) {
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filteredOut = true
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break
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}
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}
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}
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if !filteredOut {
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matches = append(matches, match)
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}
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}
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return matches
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}
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// SelectRelationPolygons returns a slice of all members that are already
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// imported with a relation with tags.
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func SelectRelationPolygons(polygonTagMatcher *TagMatcher, tags element.Tags, members []element.Member) []element.Member {
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relMatches := polygonTagMatcher.Match(&tags)
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result := []element.Member{}
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for _, m := range members {
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if m.Type != element.WAY {
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continue
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}
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memberMatches := polygonTagMatcher.Match(&m.Way.Tags)
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if matchEquals(relMatches, memberMatches) {
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result = append(result, m)
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}
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}
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return result
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}
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func matchEquals(matchesA, matchesB []Match) bool {
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for _, matchA := range matchesA {
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for _, matchB := range matchesB {
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if matchA.Key == matchB.Key &&
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matchA.Value == matchB.Value &&
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matchA.Table == matchB.Table {
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return true
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}
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}
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}
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return false
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}
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