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Simplifications when decoding blocks from database to save some memory allocations.

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This commit is contained in:
Sascha L. Teichmann
2015-06-21 22:47:06 +02:00
parent 5c239a7b60
commit 2d00eb9567
2 changed files with 11 additions and 14 deletions
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20
common/block.go
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@ -77,29 +77,31 @@ func NewDecodedBlock(data []byte, colors *Colors) (db *DecodedBlock, err error)
offset = 4
}
buf := NewposBuf(data[offset:])
buf := posBuf{Data: data[offset:]}
var zr io.ReadCloser
if zr, err = zlib.NewReader(buf); err != nil {
if zr, err = zlib.NewReader(&buf); err != nil {
return
}
var mapContent []byte
mapContent, err = ioutil.ReadAll(zr)
mapContent := make([]byte, uncompressedLen)
var k int
k, err = io.ReadFull(zr, mapContent)
zr.Close()
if err != nil {
return
}
if uncompressedLen != len(mapContent) {
if k != uncompressedLen {
err = ErrMapContentSizeMismatch
return
}
offset += buf.Pos
offset += buf.Pos + 4
buf.Pos = 0
buf.Data = data[offset:]
if zr, err = zlib.NewReader(buf); err != nil {
if zr, err = zlib.NewReader(&buf); err != nil {
return
}
@ -204,10 +206,6 @@ func (db *DecodedBlock) Content(x, y, z int) (content int32, found bool) {
return
}
func NewposBuf(data []byte) *posBuf {
return &posBuf{Data: data}
}
func (pb *posBuf) Read(p []byte) (int, error) {
pl := len(p)
ml := len(pb.Data)