05266bd8ac
* Improve Pages workflow and redesign site with accessible sidebar navigation * README clean up * Use Makefile website target in Pages deploy workflow
72 lines
1.7 KiB
Markdown
72 lines
1.7 KiB
Markdown
package builder
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import (
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"bytes"
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"fmt"
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"os"
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"strings"
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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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// Build converts a Markdown file to HTML using a template.
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// The template must contain a placeholder element that will be replaced with the rendered content.
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func Build(markdownPath, templatePath, outputPath string) error {
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md, err := os.ReadFile(markdownPath)
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if err != nil {
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return fmt.Errorf("read markdown: %w", err)
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}
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tmpl, err := os.ReadFile(templatePath)
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if err != nil {
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return fmt.Errorf("read template: %w", err)
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}
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// Convert markdown to HTML
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gm := goldmark.New(
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goldmark.WithExtensions(extension.GFM),
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goldmark.WithParserOptions(parser.WithAutoHeadingID()),
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goldmark.WithRendererOptions(html.WithUnsafe()),
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)
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var buf bytes.Buffer
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if err := gm.Convert(md, &buf); err != nil {
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return fmt.Errorf("convert markdown: %w", err)
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}
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// Inject into template — support both placeholder formats
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output := string(tmpl)
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replacements := []struct {
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old string
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new string
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}{
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{
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old: `<div id="md"></div>`,
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new: `<div id="md">` + buf.String() + `</div>`,
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},
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{
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old: `<section id="md" class="main-content"></section>`,
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new: `<section id="md" class="main-content">` + buf.String() + `</section>`,
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},
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}
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replaced := false
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for _, r := range replacements {
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if strings.Contains(output, r.old) {
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output = strings.Replace(output, r.old, r.new, 1)
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replaced = true
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break
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}
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}
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if !replaced {
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return fmt.Errorf("template missing supported markdown placeholder")
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}
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if err := os.WriteFile(outputPath, []byte(output), 0o644); err != nil {
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return fmt.Errorf("write output: %w", err)
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}
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return nil
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}
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