/
materiallist.go
59 lines (50 loc) · 1.26 KB
/
materiallist.go
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package fragment
import (
"encoding/binary"
"fmt"
"io"
)
// MaterialList information
type MaterialList struct {
hashIndex uint32
MaterialReferences []uint32
}
func LoadMaterialList(r io.ReadSeeker) (*MaterialList, error) {
m := &MaterialList{}
err := parseMaterialList(r, m)
if err != nil {
return nil, fmt.Errorf("parse MaterialList: %w", err)
}
return m, nil
}
func parseMaterialList(r io.ReadSeeker, m *MaterialList) error {
if m == nil {
return fmt.Errorf("MaterialList is nil")
}
var value uint32
err := binary.Read(r, binary.LittleEndian, &m.hashIndex)
if err != nil {
return fmt.Errorf("read hash index: %w", err)
}
err = binary.Read(r, binary.LittleEndian, &value)
if err != nil {
return fmt.Errorf("read flags: %w", err)
}
//TODO: flags support
var materialCount uint32
err = binary.Read(r, binary.LittleEndian, &materialCount)
if err != nil {
return fmt.Errorf("read materialCount: %w", err)
}
for i := uint32(0); i < materialCount; i++ {
err = binary.Read(r, binary.LittleEndian, &value)
if err != nil {
return fmt.Errorf("read %d materialReference: %w", i, err)
}
m.MaterialReferences = append(m.MaterialReferences, value)
}
return nil
}
func (m *MaterialList) FragmentType() string {
return "Material List"
}