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common.go
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/
common.go
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package transform
import (
"bytes"
"compress/zlib"
"encoding/binary"
"io"
"github.com/SnareChops/aseprite-loader/ase"
"github.com/SnareChops/aseprite-loader/trace"
)
func transformString(in io.Reader, out io.Writer) (data ase.String, err error) {
trace.Log("transformString")
err = binary.Read(in, binary.LittleEndian, &data.Length)
if err != nil {
return
}
if data.Length > 0 {
value := make([]byte, data.Length)
in.Read(value)
data.Value = string(value)
}
err = write(out, data)
return
}
func transformBytes[T int8 | int16 | int32 | int64 | int | uint8 | uint16 | uint32 | uint64 | uint](in io.Reader, out io.Writer, length T) (data []byte, err error) {
trace.Log("transformBytes")
data = make([]byte, length)
_, err = in.Read(data)
if err != nil {
return
}
err = write(out, data)
return
}
func decompress(compressed []byte) (data []byte, err error) {
trace.Log("decompress")
reader := bytes.NewReader(compressed)
var zr io.ReadCloser
zr, err = zlib.NewReader(reader)
if err != nil {
return
}
defer zr.Close()
data, err = io.ReadAll(zr)
return
}