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DefineSprite.go
117 lines (89 loc) · 1.91 KB
/
DefineSprite.go
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package swf
import (
"fmt"
"io"
)
type DefineSprite struct {
Tag *Uint16
Extended *Uint32
ID *Uint16
NumFrames *Uint16
}
func (v *DefineSprite) TagCode() TagCode {
return DefineSpriteTagCode
}
func (v *DefineSprite) String() string {
if v == nil {
return "<nil>"
}
return fmt.Sprintf("DefineSprite{ID: %d, NumFrames: %d}", v.ID.Value, v.NumFrames.Value)
}
func (v *DefineSprite) Bytes() []byte {
if v == nil {
return nil
}
var data []byte
if v.Tag != nil {
data = append(data, v.Tag.Bytes()...)
}
if v.Extended != nil {
data = append(data, v.Extended.Bytes()...)
}
if v.ID != nil {
data = append(data, v.ID.Bytes()...)
}
if v.NumFrames != nil {
data = append(data, v.NumFrames.Bytes()...)
}
return data
}
func (v *DefineSprite) Serialize() ([]byte, error) {
if v == nil {
return nil, fmt.Errorf("cannot serialize because DefineSprite is nil")
}
var data []byte
tagData, err := v.Tag.Serialize()
if err != nil {
return nil, err
}
extendedData, err := v.Extended.Serialize()
if err != nil {
return nil, err
}
idData, err := v.ID.Serialize()
if err != nil {
return nil, err
}
numFramesData, err := v.NumFrames.Serialize()
if err != nil {
return nil, err
}
data = append(data, tagData...)
data = append(data, extendedData...)
data = append(data, idData...)
data = append(data, numFramesData...)
return data, nil
}
func ParseDefineSprite(src io.Reader, tag *Uint16, extended *Uint32) (*DefineSprite, error) {
if tag == nil {
return nil, fmt.Errorf("cannot parse because tag is nil")
}
if extended == nil {
return nil, fmt.Errorf("cannot parse because extended is nil")
}
id, err := ReadUint16(src)
if err != nil {
return nil, err
}
numFrames, err := ReadUint16(src)
if err != nil {
return nil, err
}
result := &DefineSprite{
Tag: tag,
Extended: extended,
ID: id,
NumFrames: numFrames,
}
return result, nil
}