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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,63 @@ | ||
| package countrycode | ||
|
|
||
| import ( | ||
| "strings" | ||
| ) | ||
|
|
||
| type CountryCode struct { | ||
| map2To3 map[string]string | ||
| map3To2 map[string]string | ||
| } | ||
|
|
||
| func New() *CountryCode { | ||
| return &CountryCode{ | ||
| map2To3: make(map[string]string), | ||
| map3To2: make(map[string]string), | ||
| } | ||
| } | ||
|
|
||
| // Load loads country code mapping data | ||
| func (c *CountryCode) Load(data string) { | ||
| toAlpha2 := make(map[string]string) | ||
| toAlpha3 := make(map[string]string) | ||
| for _, line := range strings.Split(data, "\n") { | ||
| if line == "" { | ||
| continue | ||
| } | ||
| fields := strings.Split(line, ",") | ||
| if len(fields) < 2 { | ||
| continue | ||
| } | ||
| alpha2 := strings.TrimSpace(fields[0]) | ||
| alpha3 := strings.TrimSpace(fields[1]) | ||
| toAlpha2[alpha3] = alpha2 | ||
| toAlpha3[alpha2] = alpha3 | ||
| } | ||
|
|
||
| c.map2To3 = toAlpha3 | ||
| c.map3To2 = toAlpha2 | ||
| } | ||
|
|
||
| // ToAlpha3 converts country code alpha2 to alpha3 | ||
| func (c *CountryCode) ToAlpha3(alpha2 string) string { | ||
| return c.map2To3[alpha2] | ||
| } | ||
|
|
||
| // ToAlpha2 converts country code alpha3 to alpha2 | ||
| func (c *CountryCode) ToAlpha2(alpha3 string) string { | ||
| return c.map3To2[alpha3] | ||
| } | ||
|
|
||
| var defaultCountryCode = New() | ||
|
|
||
| func Load(data string) { | ||
| defaultCountryCode.Load(data) | ||
| } | ||
|
|
||
| func ToAlpha3(alpha2 string) string { | ||
| return defaultCountryCode.ToAlpha3(alpha2) | ||
| } | ||
|
|
||
| func ToAlpha2(alpha3 string) string { | ||
| return defaultCountryCode.ToAlpha2(alpha3) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| package countrycode | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| "github.com/stretchr/testify/assert" | ||
| ) | ||
|
|
||
| func TestCountryCode(t *testing.T) { | ||
| Load(` | ||
| AD,AND | ||
| AE,ARE | ||
| AF,AFG | ||
| `) | ||
| assert.Equal(t, "AND", ToAlpha3("AD"), "map AD to AND") | ||
| assert.Equal(t, "AE", ToAlpha2("ARE"), "map ARE to AE") | ||
| } | ||
|
|
||
| func TestCountryCodeToAlpha3(t *testing.T) { | ||
| c := New() | ||
| c.Load(` | ||
| AD,AND | ||
| AE,ARE | ||
| AF,AFG | ||
| `) | ||
| tests := []struct { | ||
| input string | ||
| expected string | ||
| }{ | ||
| {"AD", "AND"}, | ||
| {"AE", "ARE"}, | ||
| {"XX", ""}, | ||
| {"", ""}, | ||
| } | ||
|
|
||
| for _, test := range tests { | ||
| assert.Equal(t, test.expected, c.ToAlpha3(test.input), "map %s to alpha3", test.input) | ||
| } | ||
| } | ||
|
|
||
| func TestCountryCodeToAlpha2(t *testing.T) { | ||
| c := New() | ||
| c.Load(` | ||
| AD,AND | ||
| AE,ARE | ||
| AF,AFG | ||
| `) | ||
| tests := []struct { | ||
| input string | ||
| expected string | ||
| }{ | ||
| {"AND", "AD"}, | ||
| {"ARE", "AE"}, | ||
| {"", ""}, | ||
| } | ||
|
|
||
| for _, test := range tests { | ||
| assert.Equal(t, test.expected, c.ToAlpha2(test.input), "map %s to alpha2", test.input) | ||
| } | ||
| } |
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