/
string.go
51 lines (42 loc) · 1.08 KB
/
string.go
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package utils
import (
"bufio"
"fmt"
"math/rand"
"os"
"time"
)
const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
var seededRand *rand.Rand = rand.New(
rand.NewSource(time.Now().UnixNano()))
//RandomString get random string with length
func RandomString(length int) string {
b := make([]byte, length)
for i := range b {
b[i] = charset[seededRand.Intn(len(charset))]
}
return string(b)
}
//WriteContentToFile write to file
func WriteContentToFile(content []string, path string) error {
file, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0666)
if err != nil {
return fmt.Errorf("Failed creating file: %s", err)
}
datawriter := bufio.NewWriter(file)
for _, data := range content {
_, err = datawriter.WriteString(data + "\n")
if err != nil {
return fmt.Errorf("Failed to write to file %s", err.Error())
}
}
err = datawriter.Flush()
if err != nil {
return fmt.Errorf("Failed to flush file %s", err.Error())
}
err = file.Close()
if err != nil {
return fmt.Errorf("Failed to close file %s", err.Error())
}
return nil
}