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utils.go
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/
utils.go
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package core
import (
"io/ioutil"
"net"
"os"
)
func createDir(path string) error {
exists, err := pathExists(path)
if err != nil {
return err
}
if !exists {
err := os.Mkdir(path, os.ModePerm)
if err != nil {
return err
}
}
return nil
}
func pathExists(path string) (bool, error) {
_, err := os.Stat(path)
if err == nil {
return true, nil
}
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
func readFile(filepath string) ([]byte, error) {
f, err := os.Open(filepath)
if err != nil {
return nil, err
}
defer f.Close()
b, err := ioutil.ReadAll(f)
if err != nil {
return nil, err
}
return b, nil
}
func writeFile(filepath string, data []byte) error {
if err := ioutil.WriteFile(filepath, data, 0777); err != nil {
return nil
}
return nil
}
func getOutboundIP() (string, error) {
conn, err := net.Dial("udp", "8.8.8.8:80")
if err != nil {
return "", err
}
defer conn.Close()
localAddr := conn.LocalAddr().(*net.UDPAddr)
return localAddr.IP.String(), nil
}
func capitalize(str string) string {
var upperStr string
vv := []rune(str)
for i := 0; i < len(vv); i++ {
if i == 0 {
if vv[i] >= 97 && vv[i] <= 122 {
vv[i] -= 32
upperStr += string(vv[i])
} else {
return str
}
} else {
upperStr += string(vv[i])
}
}
return upperStr
}