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main.go
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main.go
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package main
import (
"log"
"os"
"strconv"
"github.com/clefever/gocrcforcer"
)
func main() {
// Handle arguments
if len(os.Args) != 4 {
log.Fatalln("Usage:", os.Args[0], "FileName ByteOffset NewCrc32Value")
}
// Parse and check file offset argument
offset, err := strconv.ParseInt(os.Args[2], 10, 64)
if err != nil {
log.Fatalln("Error: Invalid byte offset")
}
// Parse and check new CRC argument
if len(os.Args[3]) != 8 {
log.Fatalln("Error: Invalid new CRC-32 value")
}
newcrc, err := strconv.ParseUint(os.Args[3], 16, 32)
if err != nil {
log.Fatalln("Error: Invalid new CRC-32 value")
}
// Process the file
err = gocrcforcer.ModifyFileCrc32(os.Args[1], offset, uint32(newcrc), true)
if err != nil {
log.Fatalln(err.Error())
}
}