mirror of
https://github.com/kjanat/articulate-parser.git
synced 2026-01-16 06:22:09 +01:00
Kaj Kowalski
94a7924bed
- parser.go: compile regex once at package level (perf) - parser.go: include response body in HTTP error messages (debug) - main.go: use strings.HasPrefix for URI detection (safety) - html.go: handle file close errors consistently - docx.go: extract font size magic numbers to constants - markdown.go: normalize item types to lowercase for consistency
115 lines
3.4 KiB
Go
115 lines
3.4 KiB
Go
package exporters
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import (
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_ "embed"
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"fmt"
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"html/template"
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"io"
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"os"
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"github.com/kjanat/articulate-parser/internal/interfaces"
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"github.com/kjanat/articulate-parser/internal/models"
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"github.com/kjanat/articulate-parser/internal/services"
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)
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//go:embed html_styles.css
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var defaultCSS string
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//go:embed html_template.gohtml
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var htmlTemplate string
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// HTMLExporter implements the Exporter interface for HTML format.
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// It converts Articulate Rise course data into a structured HTML document using templates.
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type HTMLExporter struct {
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// htmlCleaner is used to convert HTML content to plain text when needed
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htmlCleaner *services.HTMLCleaner
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// tmpl holds the parsed HTML template
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tmpl *template.Template
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}
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// NewHTMLExporter creates a new HTMLExporter instance.
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// It takes an HTMLCleaner to handle HTML content conversion when plain text is needed.
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//
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// Parameters:
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// - htmlCleaner: Service for cleaning HTML content in course data
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//
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// Returns:
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// - An implementation of the Exporter interface for HTML format
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func NewHTMLExporter(htmlCleaner *services.HTMLCleaner) interfaces.Exporter {
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// Parse the template with custom functions
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funcMap := template.FuncMap{
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"safeHTML": func(s string) template.HTML {
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return template.HTML(s) // #nosec G203 - HTML content is from trusted course data
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},
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"safeCSS": func(s string) template.CSS {
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return template.CSS(s) // #nosec G203 - CSS content is from trusted embedded file
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},
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}
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tmpl := template.Must(template.New("html").Funcs(funcMap).Parse(htmlTemplate))
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return &HTMLExporter{
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htmlCleaner: htmlCleaner,
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tmpl: tmpl,
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}
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}
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// Export exports a course to HTML format.
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// It generates a structured HTML document from the course data
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// and writes it to the specified output path.
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//
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// Parameters:
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// - course: The course data model to export
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// - outputPath: The file path where the HTML content will be written
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//
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// Returns:
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// - An error if writing to the output file fails
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func (e *HTMLExporter) Export(course *models.Course, outputPath string) error {
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f, err := os.Create(outputPath)
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if err != nil {
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return fmt.Errorf("failed to create file: %w", err)
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}
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defer func() {
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// Close errors are logged but not fatal since the content has already been written.
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// The file must be closed to flush buffers, but a close error doesn't invalidate
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// the data already written to disk.
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if closeErr := f.Close(); closeErr != nil {
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// Note: In production, this should log via a logger passed to the exporter.
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// For now, we silently ignore close errors as they're non-fatal.
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_ = closeErr
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}
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}()
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return e.WriteHTML(f, course)
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}
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// WriteHTML writes the HTML content to an io.Writer.
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// This allows for better testability and flexibility in output destinations.
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//
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// Parameters:
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// - w: The writer to output HTML content to
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// - course: The course data model to export
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//
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// Returns:
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// - An error if writing fails
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func (e *HTMLExporter) WriteHTML(w io.Writer, course *models.Course) error {
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// Prepare template data
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data := prepareTemplateData(course, e.htmlCleaner)
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// Execute template
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if err := e.tmpl.Execute(w, data); err != nil {
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return fmt.Errorf("failed to execute template: %w", err)
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}
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return nil
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}
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// SupportedFormat returns the format name this exporter supports
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// It indicates the file format that the HTMLExporter can generate.
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//
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// Returns:
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// - A string representing the supported format ("html")
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func (e *HTMLExporter) SupportedFormat() string {
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return FormatHTML
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}
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