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dat.go
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dat.go
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package dat
import (
_ "embed"
"encoding/xml"
"io"
"os"
"strings"
)
//go:embed roms.dat.xml
var embeddedDatFile []byte
type DatFile struct {
Name string `xml:"header>name"`
Version string `xml:"header>version"`
Roms []Rom `xml:"game>rom"`
}
type Rom struct {
Name string `xml:"name,attr"`
Size int `xml:"size,attr"`
Serial string `xml:"serial,attr"`
CRC32 string `xml:"crc32,attr"`
MD5 string `xml:"md5,attr"`
SHA1 string `xml:"sha1,attr"`
Status string `xml:"status"`
}
func ReadFromIncluded() (df DatFile, err error) {
df, err = Read(embeddedDatFile)
if err != nil {
return df, err
}
return df, nil
}
// Read a DatFile from an XML datfile on disk
func ReadFromFile(path string) (df DatFile, err error) {
f, err := os.Open(path)
if err != nil {
return df, err
}
defer f.Close()
bytes, err := io.ReadAll(f)
if err != nil {
return df, err
}
return Read(bytes)
}
// Read a DatFile from bytes of XML data
func Read(xmlbytes []byte) (df DatFile, err error) {
if err := xml.Unmarshal(xmlbytes, &df); err != nil {
return df, err
}
return df, nil
}
// Find entries based on a serial, such as NSME or CZLP
func (df *DatFile) FindBySerial(serial string) (results []Rom) {
for _, rom := range df.Roms {
if strings.EqualFold(rom.Serial, serial) {
results = append(results, rom)
}
}
return results
}