mirror of https://github.com/cheat/cheat.git
45 lines
891 B
Go
45 lines
891 B
Go
// Package quick provides simple, no-configuration source code highlighting.
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package quick
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import (
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"io"
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"github.com/alecthomas/chroma"
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"github.com/alecthomas/chroma/formatters"
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"github.com/alecthomas/chroma/lexers"
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"github.com/alecthomas/chroma/styles"
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)
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// Highlight some text.
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//
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// Lexer, formatter and style may be empty, in which case a best-effort is made.
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func Highlight(w io.Writer, source, lexer, formatter, style string) error {
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// Determine lexer.
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l := lexers.Get(lexer)
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if l == nil {
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l = lexers.Analyse(source)
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}
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if l == nil {
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l = lexers.Fallback
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}
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l = chroma.Coalesce(l)
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// Determine formatter.
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f := formatters.Get(formatter)
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if f == nil {
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f = formatters.Fallback
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}
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// Determine style.
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s := styles.Get(style)
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if s == nil {
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s = styles.Fallback
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}
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it, err := l.Tokenise(nil, source)
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if err != nil {
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return err
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}
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return f.Format(w, s, it)
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}
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