forked from MTSR/mapserver
50 lines
892 B
Go
50 lines
892 B
Go
package mapblockparser
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import (
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"bytes"
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"compress/zlib"
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"errors"
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"io"
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"strconv"
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)
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//TODO: mapdata struct with accessors
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func parseMapdata(mapblock *MapBlock, data []byte) (int, error) {
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r := bytes.NewReader(data)
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cr := new(CountedReader)
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cr.Reader = r
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z, err := zlib.NewReader(cr)
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if err != nil {
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return 0, err
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}
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defer z.Close()
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buf := new(bytes.Buffer)
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io.Copy(buf, z)
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if buf.Len() != 16384 {
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return 0, errors.New("Mapdata length invalid: " + strconv.Itoa(buf.Len()))
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}
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rawdata := buf.Bytes()
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mapd := MapData{
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ContentId: make([]int, 4096),
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Param1: make([]int, 4096),
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Param2: make([]int, 4096),
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}
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mapblock.Mapdata = &mapd
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for i := 0; i < 4096; i++ {
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mapd.ContentId[i] = readU16(rawdata, i*2)
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mapd.Param1[i] = readU8(rawdata, (i*2)+2)
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mapd.Param2[i] = readU8(rawdata, (i*2)+3) //TODO: last item has wrong value
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}
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return cr.Count, nil
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}
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