photoprism/internal/maps/gen.go

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//go:build ignore
// +build ignore
// This generates countries.go by running "go generate"
package main
import (
"encoding/json"
"io/ioutil"
"os"
"strings"
"text/template"
)
type Country struct {
Code string
Name string
}
var countries []Country
func main() {
rawData, err := ioutil.ReadFile("./countries.json")
if err != nil {
panic(err)
}
err = json.Unmarshal(rawData, &countries)
if err != nil {
panic(err)
}
f, err := os.Create("countries.go")
if err != nil {
panic(err)
}
defer f.Close()
for i, v := range countries {
countries[i].Code = strings.ToLower(v.Code)
}
packageTemplate.Execute(f, struct {
Countries []Country
}{
Countries: countries,
})
}
var packageTemplate = template.Must(template.New("").Parse(`// Code generated by go generate; DO NOT EDIT.
package maps
var CountryNames = map[string]string{
{{- range .Countries }}
{{ printf "%q" .Code }}: {{ printf "%q" .Name }},
{{- end }}
}`))