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