byreqz/go-etcher
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add note about input/target being a blockdev or file

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This commit is contained in:
Nils 2022-01-16 02:56:10 +01:00
parent 4f6b025642
commit 03290ddc09
Signed by: byreqz
GPG Key ID: 396A62D7D436749E
1 changed files with 35 additions and 2 deletions
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37
main.go
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@ -132,6 +132,11 @@ func main() {
s.Suffix = " ] Getting file details"
s.Start()
statinput, err := os.Stat(input)
if err != nil {
s.Stop()
fmt.Println("\r[", color.RedString("✘"), "] Getting file details ")
log.Fatal(err)
}
statdevice, err := os.Stat(device)
if err != nil {
s.Stop()
@ -146,18 +151,34 @@ func main() {
s.Suffix = " ] Opening files"
s.Start()
image, err := os.Open(input)
if err != nil {
s.Stop()
fmt.Println("\r[", color.RedString("✘"), "] Opening files ")
log.Fatal(err)
}
var inputsize int64
var inputisblock bool
if statinput.Size() != 0 {
inputsize = statinput.Size()
inputisblock = false
} else {
inputsize, err = image.Seek(0, io.SeekEnd)
inputisblock = true
}
target, err := os.OpenFile(device, os.O_RDWR, 0660)
if err != nil {
s.Stop()
fmt.Println("\r[", color.RedString("✘"), "] Opening files ")
log.Fatal(err)
}
var targetsize int64
var targetisblock bool
if statdevice.Size() != 0 {
targetsize = statdevice.Size()
targetisblock = false
} else {
targetsize, err = target.Seek(0, io.SeekEnd)
targetisblock = true
}
if err != nil {
s.Stop()
@ -169,8 +190,20 @@ func main() {
}
inputmb := fmt.Sprint("[", inputsize / 1024 / 1024, "MB]")
devicemb := fmt.Sprint("[", targetsize / 1024 / 1024, "MB]")
fmt.Println("[", color.BlueString("i"), "] Input device/file: " + input, inputmb)
fmt.Println("[", color.BlueString("i"), "] Output device/file: " + device, devicemb)
var inputblock string
var targetblock string
if inputisblock == true {
inputblock = "[Blockdevice]"
} else {
inputblock = "[File]"
}
if targetisblock == true {
targetblock = "[Blockdevice]"
} else {
targetblock = "[File]"
}
fmt.Println("[", color.BlueString("i"), "] Input device/file: " + input, inputmb, inputblock)
fmt.Println("[", color.BlueString("i"), "] Output device/file: " + device, devicemb, targetblock)
if statinput.Size() > statdevice.Size() {
fmt.Println("[", color.RedString("w"), "]", color.RedString(" Warning:"), "Input file seems to be bigger than the destination!")
}