Greg Pomerantz
92d22cf0cd
- gen_icons.go: reads SVG files, generates icons.go with go:embed - icons.go: generated file with embedded SVG strings - Supports cut, copy, paste icons (search, conflict, wrapOn/Off to be added)
105 lines
1.9 KiB
Go
105 lines
1.9 KiB
Go
//go:build ignore
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//go:generate go run gen_icons.go
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// gen_icons reads SVG files and generates icons/embedded.go with go:embed directives.
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// Run: go generate ./icons
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// To regenerate: cd icons && go run gen_icons.go
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package main
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import (
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"bytes"
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"fmt"
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"go/format"
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"io/fs"
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"os"
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"path/filepath"
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"sort"
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"strings"
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"text/template"
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)
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const output = "icons.go"
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var iconTemplate = template.Must(template.New("").Parse(`// Code generated by gen_icons.go; DO NOT EDIT.
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package icons
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import (
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_ "embed"
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)
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//go:embed {{.Embeds}}
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var svgFS embed.FS
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{{range $name, $files := .Icons}}
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// {{$name}}SVG contains the {{$name}} icon SVG source.
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var {{$name}}SVG = ` + "`" + `{{.}}` + "`" + `
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{{end}}
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`))
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type iconData struct {
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Embeds string
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Icons map[string]string
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}
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func main() {
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icons := make(map[string]string)
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var embeds []string
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err := filepath.WalkDir(".", func(path string, d fs.DirEntry, err error) error {
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if err != nil {
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return err
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}
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if d.IsDir() {
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return nil
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}
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if !strings.HasSuffix(path, ".svg") {
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return nil
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}
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data, err := os.ReadFile(path)
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if err != nil {
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return err
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}
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name := strings.TrimSuffix(filepath.Base(path), ".svg")
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icons[name] = string(data)
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embeds = append(embeds, filepath.Base(path))
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return nil
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})
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if err != nil {
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fmt.Fprintf(os.Stderr, "error: %v\n", err)
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os.Exit(1)
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}
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// Sort embeds for deterministic output
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sort.Strings(embeds)
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data := iconData{
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Embeds: strings.Join(embeds, " "),
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Icons: icons,
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}
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var buf bytes.Buffer
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if err := iconTemplate.Execute(&buf, data); err != nil {
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fmt.Fprintf(os.Stderr, "template error: %v\n", err)
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os.Exit(1)
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}
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src, err := format.Source(buf.Bytes())
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if err != nil {
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fmt.Fprintf(os.Stderr, "format error: %v\n", err)
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os.Exit(1)
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}
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if err := os.WriteFile(output, src, 0644); err != nil {
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fmt.Fprintf(os.Stderr, "write error: %v\n", err)
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os.Exit(1)
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}
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fmt.Println("generated icons.go")
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}
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