/
write.go
183 lines (167 loc) · 3.45 KB
/
write.go
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package chunk
import (
"errors"
"fmt"
"regexp"
"strconv"
"strings"
"github.com/Tnze/go-mc/nbt"
"github.com/Tnze/go-mc/save/region"
"github.com/stretchr/objx"
)
func WriteChunk(d Region[[]Entities]) error {
rg, err := region.Open(d.FilePath)
if err != nil {
return fmt.Errorf("WriteChunk: %w", err)
}
defer rg.Close()
for _, v := range d.Chunk {
if !rg.ExistSector(v.X, v.Z) {
return fmt.Errorf("WriteChunk: %w", ErrNotExistSector{
X: v.X,
Z: v.Z,
FilePath: d.FilePath,
})
}
b, err := rg.ReadSector(v.X, v.Z)
if err != nil {
return fmt.Errorf("WriteChunk: %w", err)
}
b, err = mcDecompress(b)
if err != nil {
return fmt.Errorf("WriteChunk: %w", err)
}
var a map[string]any
err = nbt.Unmarshal(b, &a)
if err != nil {
return fmt.Errorf("WriteChunk: %w", err)
}
err = merge(&a, v.Data)
if err != nil {
return fmt.Errorf("WriteChunk: %w", err)
}
bb, err := nbt.Marshal(a)
if err != nil {
return fmt.Errorf("WriteChunk: %w", err)
}
bb, err = mcEncompress(bb)
if err != nil {
return fmt.Errorf("WriteChunk: %w", err)
}
err = rg.WriteSector(v.X, v.Z, bb)
if err != nil {
return fmt.Errorf("WriteChunk: %w", err)
}
}
return nil
}
var reg = regexp.MustCompile(`\[(\d*)\]$`)
func merge(dst *map[string]any, src []Entities) error {
m := objx.New(*dst)
for _, v := range src {
al, ok := m.Get(v.Root).Data().([]any)
if !ok {
return fmt.Errorf("merge: %w", ErrNotSlice)
}
for i, vv := range al {
if !anyEqEntities(vv, v) {
continue
}
tm, ok := vv.(map[string]any)
if !ok {
return fmt.Errorf("merge: %w", ErrNotMap)
}
err := mergeMap(&tm, v.PATH)
if err != nil {
return fmt.Errorf("merge: %w", err)
}
al[i] = tm
}
m.Set(v.Root, al)
}
*dst = (map[string]any)(m)
return nil
}
func mergeMap(dst *map[string]any, src map[string]string) error {
m := objx.New(*dst)
for k, v := range src {
if strings.HasSuffix(k, "]") {
sl := reg.FindStringSubmatch(k)
i, err := strconv.Atoi(sl[1])
if err != nil {
return fmt.Errorf("mergeMap: %w", err)
}
nk := reg.ReplaceAllString(k, "")
data := m.Get(nk).Data()
err = setList(data, i, v)
if err != nil {
return fmt.Errorf("mergeMap: %w", err)
}
m = m.Set(nk, data)
continue
}
m = m.Set(k, v)
}
*dst = (map[string]any)(m)
return nil
}
func setList(data any, index int, v any) error {
l, ok := data.([]any)
if !ok {
return fmt.Errorf("setList: %w", ErrNotSlice)
}
if index > len(l) {
return fmt.Errorf("setList: %w", ErrOutRange)
}
l[index] = v
return nil
}
var ErrOutRange = errors.New("超过数组范围")
type ErrNotExistSector struct {
X int
Z int
FilePath string
}
func (e ErrNotExistSector) Error() string {
return fmt.Sprintf("没在 %v 中找到 %v %v", e.FilePath, e.X, e.Z)
}
var ErrNotMap = errors.New("not map")
func anyEqEntities(a any, e Entities) bool {
iseq := false
m, ok := a.(map[string]any)
if !ok {
return false
}
if v, ok := m["x"]; ok {
x, ok := v.(int32)
if !ok {
return false
}
iseq = e.POS[0] == int(x)
}
if v, ok := m["y"]; ok && iseq {
y, ok := v.(int32)
if !ok {
return false
}
iseq = e.POS[1] == int(y)
}
if v, ok := m["z"]; ok && iseq {
z, ok := v.(int32)
if !ok {
return false
}
iseq = e.POS[2] == int(z)
}
if iseq {
return iseq
}
if e.UUID != "" {
uuid, err := getUUIDformap(m)
if err != nil {
panic(err)
}
return uuid == e.UUID
}
return false
}