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types.go
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types.go
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package nbtreader
import (
"fmt"
"io"
"strings"
)
type TagType byte
const (
Tag_End TagType = iota
Tag_Byte
Tag_Short
Tag_Int
Tag_Long
Tag_Float
Tag_Double
Tag_Byte_Array
Tag_String
Tag_List
Tag_Compound
Tag_Int_Array
Tag_Long_Array
)
func (t TagType) String() string {
switch t {
case Tag_End:
return "End of Compound"
case Tag_Byte:
return "Byte (int8)"
case Tag_Short:
return "Short (int16)"
case Tag_Int:
return "Int (int32)"
case Tag_Long:
return "Long (int64)"
case Tag_Float:
return "Float (float32)"
case Tag_Double:
return "Double (float64)"
case Tag_Byte_Array:
return "ByteArray ([]int8)"
case Tag_String:
return "String"
case Tag_List:
return "List"
case Tag_Compound:
return "Start of Compound"
case Tag_Int_Array:
return "IntArray ([]int32)"
case Tag_Long_Array:
return "LongArray ([]int64)"
default:
return fmt.Sprintf("*Unknown Type %d*", t)
}
}
func popType(r io.Reader) (TagType, error) {
var ttype [1]byte
if _, err := r.Read(ttype[:]); err != nil {
return 0x00, fmt.Errorf("pop type: %v", err)
}
t := TagType(ttype[0])
return t, nil
}
type NbtTag interface {
String() string
Type() TagType
parse(io.Reader) (NbtTag, error)
compose() []byte
}
var indention int = 0
func indent() string {
return "\n" + strings.Repeat(" ", indention)
}
func indentIncr() {
indention = indention + 1
}
func indentDecr() {
indention = indention - 1
}
type Byte byte
func (t Byte) String() string {
return fmt.Sprintf("%db", t)
}
func (t Byte) Type() TagType {
return Tag_Byte
}
type Short int16
func (t Short) String() string {
return fmt.Sprintf("%ds", t)
}
func (t Short) Type() TagType {
return Tag_Short
}
type Int int32
func (t Int) String() string {
return fmt.Sprintf("%d", t)
}
func (t Int) Type() TagType {
return Tag_Int
}
type Long int64
func (t Long) String() string {
return fmt.Sprintf("%dl", t)
}
func (t Long) Type() TagType {
return Tag_Long
}
type Float float32
func (t Float) String() string {
return fmt.Sprintf("%gf", t)
}
func (t Float) Type() TagType {
return Tag_Float
}
type Double float64
func (t Double) String() string {
return fmt.Sprintf("%gd", t)
}
func (t Double) Type() TagType {
return Tag_Double
}
type ByteArray []Byte
func (t ByteArray) String() string {
var itemsString string
for i, item := range t {
if i == 0 {
itemsString = fmt.Sprint(item)
} else {
itemsString = itemsString + ", " + fmt.Sprint(item)
}
}
return fmt.Sprintf("[B; %s]", itemsString)
}
func (t ByteArray) Type() TagType {
return Tag_Byte_Array
}
type String string
func (t String) String() string {
return "\"" + string(t) + "\""
}
func (t String) Type() TagType {
return Tag_String
}
func (t String) Len() Short {
return Short(len(t))
}
type List []NbtTag
func (t List) String() string {
var entriesString string
for i, entry := range t {
if i == 0 {
entriesString = entry.String()
} else {
entriesString = entriesString + ", " + entry.String()
}
}
return fmt.Sprintf("[%s]", entriesString)
}
func (t List) Type() TagType {
return Tag_List
}
type Compound map[String]NbtTag
func (t Compound) String() string {
var childsString string
i := 0
for key, child := range t {
if i == 0 {
indentIncr()
} else {
childsString = childsString + ","
}
childsString += fmt.Sprintf("%s%s: %s", indent(), string(key), child.String())
if i == len(t)-1 {
indentDecr()
childsString = childsString + indent()
}
i++
}
return fmt.Sprintf("{%s}", childsString)
}
func (t Compound) Type() TagType {
return Tag_Compound
}
type IntArray []Int
func (t IntArray) String() string {
var itemsString string
for i, item := range t {
if i == 0 {
itemsString = fmt.Sprint(item)
} else {
itemsString = itemsString + ", " + fmt.Sprint(item)
}
}
return fmt.Sprintf("[I; %s]", itemsString)
}
func (t IntArray) Type() TagType {
return Tag_Int_Array
}
type LongArray []Long
func (t LongArray) String() string {
var itemsString string
for i, item := range t {
if i == 0 {
itemsString = fmt.Sprint(item)
} else {
itemsString = itemsString + ", " + fmt.Sprint(item)
}
}
return fmt.Sprintf("[L; %s]", itemsString)
}
func (t LongArray) Type() TagType {
return Tag_Long_Array
}