dec-decode/dec-decode.go

70 lines
1.5 KiB
Go

package main
import (
"fmt"
"io"
"os"
"path"
"strings"
flags "github.com/jessevdk/go-flags"
)
var opts struct {
Suffix string `short:"s" long:"suffix" description:"add a suffix to the output file"`
Verbose bool `short:"v" long:"verbose" description:"show lots more information than is probably necessary"`
Positional struct {
Files []string `description:"list of files to decode" required:"true"`
} `positional-args:"true" required:"true"`
}
func main() {
_, err := flags.Parse(&opts)
if err != nil {
os.Exit(1)
}
for _, filePath := range opts.Positional.Files {
fin, err := os.Open(filePath)
errorExit(err)
defer fin.Close()
fileName := path.Base(filePath)
var outPath string
if path.Ext(fileName) == ".dec" {
outPath = path.Join(".", strings.TrimRight(fileName, ".dec"))
} else {
outPath = path.Join(".", fileName+".iso")
}
if opts.Suffix != "" {
if !strings.HasPrefix(opts.Suffix, ".") {
outPath += "."
}
outPath += opts.Suffix
}
signature := readSignature(fin)
_, err = fin.Seek(0, io.SeekStart)
errorExit(err)
switch signature {
case "GCML":
case "GCMM":
decodeGameCube(fin, outPath)
case "WII5":
decodeWii(fin, outPath, 0x1182800) //18360320
case "WII9":
decodeWii(fin, outPath, 0x1FB5000) //33247232
default:
fmt.Printf("Unknown filetype: %s when checking file %s\n", signature, fileName)
}
}
}
func readSignature(r io.Reader) string {
buffer := make([]byte, 4)
_, err := io.ReadFull(r, buffer)
errorExit(err)
return string(buffer)
}