77 lines
2.1 KiB
Go
77 lines
2.1 KiB
Go
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// Package markdown renders Markdown documents to HTML with the "goldmark"
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// processor. Note that unlike other static site generators, Markdown processing
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// does not automatically parse frontmatter; you will need to use the "frontmatter"
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// plugin to extract any metadata which may be present in your source content.
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package markdown
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import (
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"bytes"
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"path"
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"strings"
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"git.foosoft.net/alex/goldsmith"
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"git.foosoft.net/alex/goldsmith/filters/wildcard"
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"github.com/yuin/goldmark"
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"github.com/yuin/goldmark/extension"
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"github.com/yuin/goldmark/parser"
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"github.com/yuin/goldmark/renderer/html"
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)
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// Markdown chainable context.
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type Markdown struct {
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md goldmark.Markdown
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}
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// New creates a new instance of the Markdown plugin.
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func New() *Markdown {
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return NewWithGoldmark(
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goldmark.New(
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goldmark.WithExtensions(extension.GFM, extension.Typographer),
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goldmark.WithParserOptions(parser.WithAutoHeadingID()),
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goldmark.WithRendererOptions(html.WithUnsafe()),
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),
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)
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}
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// New creates a new instance of the Markdown plugin with user-provided goldmark instance.
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func NewWithGoldmark(md goldmark.Markdown) *Markdown {
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return &Markdown{md}
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}
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func (*Markdown) Name() string {
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return "markdown"
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}
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func (self *Markdown) Initialize(context *goldsmith.Context) error {
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context.Filter(wildcard.New("**/*.md", "**/*.markdown"))
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return nil
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}
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func (self *Markdown) Process(context *goldsmith.Context, inputFile *goldsmith.File) error {
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outputPath := strings.TrimSuffix(inputFile.Path(), path.Ext(inputFile.Path())) + ".html"
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if outputFile := context.RetrieveCachedFile(outputPath, inputFile); outputFile != nil {
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outputFile.CopyProps(inputFile)
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context.DispatchFile(outputFile)
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return nil
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}
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var dataIn bytes.Buffer
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if _, err := dataIn.ReadFrom(inputFile); err != nil {
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return err
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}
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var dataOut bytes.Buffer
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if err := self.md.Convert(dataIn.Bytes(), &dataOut); err != nil {
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return err
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}
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outputFile, err := context.CreateFileFromReader(outputPath, &dataOut)
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if err != nil {
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return err
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}
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outputFile.CopyProps(inputFile)
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context.DispatchAndCacheFile(outputFile, inputFile)
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return nil
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}
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