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bitmaskmap.go
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bitmaskmap.go
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package bitmask
import (
"encoding/gob"
"fmt"
"io"
"os"
"reflect"
)
// PBFMasks - struct to hold common masks .
type PBFMasks struct {
Nodes *Bitmask
Ways *Bitmask
Relations *Bitmask
WayRefs *Bitmask
RelNodes *Bitmask
RelWays *Bitmask
RelRelation *Bitmask
}
// NewPBFMasks - constructor
func NewPBFMasks() *PBFMasks {
return &PBFMasks{
Nodes: NewBitMask(),
Ways: NewBitMask(),
Relations: NewBitMask(),
WayRefs: NewBitMask(),
RelNodes: NewBitMask(),
RelWays: NewBitMask(),
RelRelation: NewBitMask(),
}
}
// WriteTo - write to destination
func (m *PBFMasks) WriteTo(sink io.Writer) (int64, error) {
encoder := gob.NewEncoder(sink)
err := encoder.Encode(m)
return 0, err
}
// ReadFrom - read from destination
func (m *PBFMasks) ReadFrom(tap io.Reader) (int64, error) {
decoder := gob.NewDecoder(tap)
err := decoder.Decode(m)
return 0, err
}
// WriteToFile - write to disk
func (m *PBFMasks) WriteToFile(path string) error {
file, err := os.Create(path)
if err != nil {
return err
}
if _, err := m.WriteTo(file); err != nil {
return err
}
return nil
}
// ReadFromFile - read from disk
func (m *PBFMasks) ReadFromFile(path string) error {
// bitmask file doesn't exist
if _, err := os.Stat(path); err != nil {
return fmt.Errorf("bitmask file not found: %s", path)
}
file, err := os.Open(path)
if err != nil {
return err
}
if _, err := m.ReadFrom(file); err != nil {
return err
}
return nil
}
// Print -- print debug stats
func (m PBFMasks) Print() {
k := reflect.TypeOf(m)
v := reflect.ValueOf(m)
for i := 0; i < k.NumField(); i++ {
key := k.Field(i).Name
val := v.Field(i).Interface()
fmt.Printf("%s: %v\n", key, (val.(*Bitmask)).Len())
}
}