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valid.go
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valid.go
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package valid
import (
"database/sql"
"regexp"
"strconv"
"strings"
"time"
"unicode/utf8"
"github.com/lib/pq"
)
const (
EmailPattern = "^[a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\\.[a-zA-Z0-9-.]+$"
)
var (
EmailRegEx = regexp.MustCompile(EmailPattern)
)
func IsNull(s string) bool {
return len(s) == 0
}
func IsNullString(s sql.NullString) bool {
return !s.Valid || IsNull(s.String)
}
func IsEmail(s string) bool {
return EmailRegEx.MatchString(s)
}
func IsInt(s string) (int, bool) {
value, err := strconv.Atoi(s)
if err != nil {
return 0, false
}
return value, true
}
func IsIntBetween(s string, min int, max int) (int, bool) {
value, err := strconv.Atoi(s)
if err == nil {
if value >= min && value <= max {
return value, true
}
}
return 0, false
}
func IsLength(s string, min int, max int) bool {
length := utf8.RuneCountInString(s)
if length >= min && length <= max {
return true
}
return false
}
func IsTimezone(zone string) bool {
return !IsNull(zone) && strings.Contains(zone, "/")
}
func ToNullString(s string) sql.NullString {
return sql.NullString{String: s, Valid: s != ""}
}
func ToNullTime(t time.Time) pq.NullTime {
return pq.NullTime{Time: t, Valid: !t.IsZero()}
}
func ToNullFloat64(f float64) sql.NullFloat64 {
return sql.NullFloat64{Float64: f, Valid: f != 0.0}
}