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main.go
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main.go
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package main
import (
"encoding/json"
"fmt"
"os"
. "github.com/pruthvirajsinh/symflux"
. "github.com/pruthvirajsinh/symflux/recon"
"github.com/pruthvirajsinh/symflux/recon/leveldb"
)
func die(err error) {
panic(err)
}
func walk(tree PrefixTree) {
fmt.Println("[")
var nodes []PrefixNode
root, err := tree.Root()
if err != nil {
die(err)
}
nodes = append(nodes, root)
first := true
for len(nodes) > 0 {
if first {
first = false
} else {
fmt.Println(",")
}
node := nodes[len(nodes)-1]
nodes = nodes[:len(nodes)-1]
visit(node)
if !node.IsLeaf() {
nodes = append(node.Children(), nodes...)
}
}
fmt.Println("]")
}
func visit(node PrefixNode) {
render := struct {
SValues []*Zp
NumElements int
Key string
Leaf bool
Fingerprints []string
Children []string
}{
node.SValues(),
node.Size(),
node.Key().String(),
node.IsLeaf(),
[]string{},
[]string{},
}
if node.IsLeaf() {
for _, element := range node.Elements() {
render.Fingerprints = append(render.Fingerprints, fmt.Sprintf("%x", element.Bytes()))
}
}
for _, child := range node.Children() {
render.Children = append(render.Children, child.Key().String())
}
out, err := json.MarshalIndent(render, "", "\t")
if err != nil {
die(err)
}
os.Stdout.Write(out)
os.Stdout.Write([]byte("\n"))
}
func main() {
var dbDir string
if len(os.Args) < 2 {
fmt.Println("Usage: <leveldb path>")
os.Exit(1)
}
dbDir = os.Args[1]
settings := leveldb.DefaultSettings()
settings.Set("symflux.recon.leveldb.path", dbDir)
ptree, err := leveldb.New(settings)
if err != nil {
die(err)
}
err = ptree.Create()
if err != nil {
die(err)
}
walk(ptree)
}