44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
package common
|
|
|
|
// Misc utils
|
|
|
|
import (
|
|
"os"
|
|
"path/filepath"
|
|
"regexp"
|
|
)
|
|
|
|
var usernameRegex *regexp.Regexp = regexp.MustCompile(`^[0-9a-zA-Z_-]*[a-zA-Z0-9]+[0-9a-zA-Z_-]*$`)
|
|
|
|
const InvalidNameError string = `Invalid name.<br />Name must be between 3 and 36 characters in length; contain only numbers, letters, underscores or dashes; and contain at least one number or letter.<br />Names cannot contain spaces.`
|
|
|
|
// IsValidName checks that name is within the correct ranges, follows the regex defined
|
|
// and is not a valid color name
|
|
func IsValidName(name string) bool {
|
|
return 3 <= len(name) && len(name) <= 36 &&
|
|
usernameRegex.MatchString(name)
|
|
}
|
|
|
|
// Return the absolut directory containing the MovieNight binary
|
|
func RunPath() string {
|
|
ex, er := os.Executable()
|
|
if er != nil {
|
|
panic(er)
|
|
}
|
|
return filepath.Dir(ex)
|
|
}
|
|
|
|
func Substr(input string, start int, length int) string {
|
|
asRunes := []rune(input)
|
|
|
|
if start >= len(asRunes) {
|
|
return ""
|
|
}
|
|
|
|
if start+length > len(asRunes) {
|
|
length = len(asRunes) - start
|
|
}
|
|
|
|
return string(asRunes[start : start+length])
|
|
}
|