/
gen.go
96 lines (81 loc) 路 1.35 KB
/
gen.go
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//go:generate go run .
package main
import (
"bytes"
"encoding/json"
"go/format"
"io"
"net/http"
"os"
"strings"
"text/template"
)
const output = "../colors_gen.go"
const t = `// Code generated by ./gen/gen.go; DO NOT EDIT.
package color
var Cols = []Color{
{{- range . }}
{
ID: {{ .ColorId }},
Hex: "{{ .HexString | ToUpper }}",
R: {{ .Rgb.R }},
G: {{ .Rgb.G }},
B: {{ .Rgb.B }},
},
{{- end }}
}
`
type color struct {
ColorId int
HexString string
Rgb struct {
R int
G int
B int
}
Hsl struct {
H float64
S int
L int
}
Name string
}
var funcMap = template.FuncMap{
"ToUpper": strings.ToUpper,
}
func generate(cols []*color) error {
tpl, err := template.New("").Funcs(funcMap).Parse(t)
if err != nil {
return err
}
var buf bytes.Buffer
if err := tpl.Execute(&buf, cols); err != nil {
return err
}
src, err := format.Source(buf.Bytes())
if err != nil {
return err
}
return os.WriteFile(output, src, 0666)
}
func run() error {
res, err := http.Get("https://www.ditig.com/downloads/256-colors.json")
if err != nil {
return err
}
defer res.Body.Close()
body, err := io.ReadAll(res.Body)
if err != nil {
return err
}
cols := make([]*color, 0)
if err := json.Unmarshal(body, &cols); err != nil {
return err
}
return generate(cols)
}
func main() {
if err := run(); err != nil {
panic(err)
}
}