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GO-1322 Introduce constants

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kirillston 2023-04-25 18:17:59 +02:00 • committed by Mikhail Iudin
parent 445367a76f
commit 27a18f4081
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1 changed files with 11 additions and 4 deletions
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15
cmd/logdecode/main.go
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@ -11,14 +11,21 @@ import (
"os"
)
const (
argsLenWithFile = 2
fileArgNumber = 1
stdinSizeOnLinux = 4092
bufferSize = 1024
)
func main() {
var (
err error
reader io.Reader
file = os.Stdin
)
if len(os.Args) == 2 {
if file, err = os.Open(os.Args[1]); err != nil {
if len(os.Args) == argsLenWithFile {
if file, err = os.Open(os.Args[fileArgNumber]); err != nil {
fmt.Println("Error opening file:", err)
return
}
@ -33,7 +40,7 @@ func main() {
if err != nil {
fmt.Println("Error decoding base64:", err)
// On some OS stdin is limited with 4092 bytes
if errors.Is(err, base64.CorruptInputError(4092)) {
if errors.Is(err, base64.CorruptInputError(stdinSizeOnLinux)) {
fmt.Println("Try to pass base64 in a file. Filename should be the argument of the program")
}
return
@ -49,7 +56,7 @@ func main() {
}
result := ""
buf := make([]byte, 1024)
buf := make([]byte, bufferSize)
for {
n, err := reader.Read(buf)
result += string(buf[:n])