66 lines
1.2 KiB
Go
66 lines
1.2 KiB
Go
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package styles
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import (
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"embed"
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"io/fs"
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"sort"
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"github.com/alecthomas/chroma/v2"
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)
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//go:embed *.xml
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var embedded embed.FS
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// Registry of Styles.
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var Registry = func() map[string]*chroma.Style {
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registry := map[string]*chroma.Style{}
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// Register all embedded styles.
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files, err := fs.ReadDir(embedded, ".")
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if err != nil {
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panic(err)
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}
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for _, file := range files {
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if file.IsDir() {
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continue
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}
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r, err := embedded.Open(file.Name())
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if err != nil {
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panic(err)
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}
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style, err := chroma.NewXMLStyle(r)
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if err != nil {
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panic(err)
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}
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registry[style.Name] = style
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_ = r.Close()
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}
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return registry
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}()
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// Fallback style. Reassign to change the default fallback style.
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var Fallback = Registry["swapoff"]
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// Register a chroma.Style.
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func Register(style *chroma.Style) *chroma.Style {
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Registry[style.Name] = style
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return style
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}
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// Names of all available styles.
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func Names() []string {
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out := []string{}
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for name := range Registry {
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out = append(out, name)
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}
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sort.Strings(out)
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return out
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}
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// Get named style, or Fallback.
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func Get(name string) *chroma.Style {
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if style, ok := Registry[name]; ok {
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return style
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}
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return Fallback
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}
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