frostfs-node/pkg/util/locode/record.go
Pavel Karpy f99a0498da [] util: Add details to errors
Make error messages more descriptive when parsing LOCODE from string errors
appear.

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
2022-05-20 10:53:27 +03:00

83 lines
2 KiB
Go

package locode
import (
"errors"
"fmt"
"strings"
)
// LOCODE represents code from UN/LOCODE coding scheme.
type LOCODE [2]string
// Record represents a single record of the UN/LOCODE table.
type Record struct {
// Change Indicator.
Ch string
// Combination of a 2-character country code and a 3-character location code.
LOCODE LOCODE
// Name of the locations which has been allocated a UN/LOCODE.
Name string
// Names of the locations which have been allocated a UN/LOCODE without diacritic signs.
NameWoDiacritics string
// ISO 1-3 character alphabetic and/or numeric code for the administrative division of the country concerned.
SubDiv string
// 8-digit function classifier code for the location.
Function string
// Status of the entry by a 2-character code.
Status string
// Last date when the location was updated/entered.
Date string
// The IATA code for the location if different from location code in column LOCODE.
IATA string
// Geographical coordinates (latitude/longitude) of the location, if there is any.
Coordinates string
// Some general remarks regarding the UN/LOCODE in question.
Remarks string
}
// ErrInvalidString is the error of incorrect string format of the LOCODE.
var ErrInvalidString = errors.New("invalid string format in UN/Locode")
// FromString parses string and returns LOCODE.
//
// If string has incorrect format, ErrInvalidString returns.
func FromString(s string) (*LOCODE, error) {
const (
locationSeparator = " "
locodePartsNumber = 2
)
words := strings.Split(s, locationSeparator)
if ln := len(words); ln != locodePartsNumber {
return nil, fmt.Errorf(
"incorrect locode: it must consist of %d codes separated with a witespase, got: %d",
locodePartsNumber,
ln,
)
}
l := new(LOCODE)
copy(l[:], words)
return l, nil
}
// CountryCode returns a string representation of country code.
func (l *LOCODE) CountryCode() string {
return l[0]
}
// LocationCode returns a string representation of location code.
func (l *LOCODE) LocationCode() string {
return l[1]
}