80 lines
2.0 KiB
Go
80 lines
2.0 KiB
Go
package lexers
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import (
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"embed"
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"io/fs"
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"github.com/alecthomas/chroma/v2"
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)
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//go:embed embedded
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var embedded embed.FS
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// GlobalLexerRegistry is the global LexerRegistry of Lexers.
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var GlobalLexerRegistry = func() *chroma.LexerRegistry {
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reg := chroma.NewLexerRegistry()
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// index(reg)
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paths, err := fs.Glob(embedded, "embedded/*.xml")
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if err != nil {
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panic(err)
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}
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for _, path := range paths {
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reg.Register(chroma.MustNewXMLLexer(embedded, path))
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}
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return reg
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}()
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// Names of all lexers, optionally including aliases.
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func Names(withAliases bool) []string {
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return GlobalLexerRegistry.Names(withAliases)
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}
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// Get a Lexer by name, alias or file extension.
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//
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// Note that this if there isn't an exact match on name or alias, this will
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// call Match(), so it is not efficient.
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func Get(name string) chroma.Lexer {
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return GlobalLexerRegistry.Get(name)
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}
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// MatchMimeType attempts to find a lexer for the given MIME type.
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func MatchMimeType(mimeType string) chroma.Lexer {
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return GlobalLexerRegistry.MatchMimeType(mimeType)
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}
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// Match returns the first lexer matching filename.
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//
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// Note that this iterates over all file patterns in all lexers, so it's not
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// particularly efficient.
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func Match(filename string) chroma.Lexer {
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return GlobalLexerRegistry.Match(filename)
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}
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// Register a Lexer with the global registry.
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func Register(lexer chroma.Lexer) chroma.Lexer {
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return GlobalLexerRegistry.Register(lexer)
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}
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// Analyse text content and return the "best" lexer..
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func Analyse(text string) chroma.Lexer {
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return GlobalLexerRegistry.Analyse(text)
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}
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// PlaintextRules is used for the fallback lexer as well as the explicit
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// plaintext lexer.
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func PlaintextRules() chroma.Rules {
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return chroma.Rules{
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"root": []chroma.Rule{
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{`.+`, chroma.Text, nil},
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{`\n`, chroma.Text, nil},
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},
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}
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}
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// Fallback lexer if no other is found.
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var Fallback chroma.Lexer = chroma.MustNewLexer(&chroma.Config{
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Name: "fallback",
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Filenames: []string{"*"},
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Priority: -1,
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}, PlaintextRules)
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