func main() {
ro := &opt.ReadOptions{}
//wo := &opt.WriteOptions{}
opts := &opt.Options{}
ldb, err := leveldb.OpenFile(dbpath, opts)
fmt.Println("started db from ", dbpath)
if err != nil {
fmt.Printf("db open failed %v\n", err)
return
}
elice := make([]*tst, 0, 10)
//var fromkey [] byte = []byte{byte(2)} // Table Name (4 bytes)
//var tokey [] byte = []byte{byte(51)} // Table Name (4 bytes)
iter := ldb.NewIterator(&util.Range{Start: nil, Limit: nil}, ro)
for iter.Next() {
key := iter.Key()
fmt.Printf("key: %v\n", common.EncodeBinary(&key))
// fmt.Println(" value:%v", iter.Value())
buf := iter.Value()
var buf2 []byte
buf2 = buf
fmt.Printf("value: ")
// fmt.Println(spew.Sdump(iter.Value()))
spew.Dump(buf2)
t := new(tst)
//t.key = binary.BigEndian.Uint32(key[:4])
//buf := bytes.NewBuffer(key)
//binary.Read(buf, binary.BigEndian, &t.key)
//fmt.Println("t.key:%v", t.key)
elice = append(elice, t)
}
fmt.Printf("len(elice):%v", len(elice))
fmt.Printf("completed\n")
ldb.Close()
}
// This example demonstrates how to use Dump to dump variables to stdout.
func ExampleDump() {
// The following package level declarations are assumed for this example:
/*
type Flag int
const (
flagOne Flag = iota
flagTwo
)
var flagStrings = map[Flag]string{
flagOne: "flagOne",
flagTwo: "flagTwo",
}
func (f Flag) String() string {
if s, ok := flagStrings[f]; ok {
return s
}
return fmt.Sprintf("Unknown flag (%d)", int(f))
}
type Bar struct {
data uintptr
}
type Foo struct {
unexportedField Bar
ExportedField map[interface{}]interface{}
}
*/
// Setup some sample data structures for the example.
bar := Bar{uintptr(0)}
s1 := Foo{bar, map[interface{}]interface{}{"one": true}}
f := Flag(5)
b := []byte{
0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20,
0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28,
0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30,
0x31, 0x32,
}
// Dump!
spew.Dump(s1, f, b)
// Output:
// (spew_test.Foo) {
// unexportedField: (spew_test.Bar) {
// data: (uintptr) <nil>
// },
// ExportedField: (map[interface {}]interface {}) (len=1) {
// (string) (len=3) "one": (bool) true
// }
// }
// (spew_test.Flag) Unknown flag (5)
// ([]uint8) (len=34 cap=34) {
// 00000000 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 |............... |
// 00000010 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 |!"#$%&'()*+,-./0|
// 00000020 31 32 |12|
// }
//
}