Implemented lists

Render.go

@@ -14,6 +14,7 @@ type renderer struct {
 	out            strings.Builder
 	paragraphLevel int
 	quoteLevel     int
+	listLevel      int
 }
 
 // Render creates HTML from the supplied markdown text.
@@ -26,7 +27,7 @@ func Render(markdown string) string {
 
 	for {
 		if i > len(markdown) {
-			r.closeParagraphs()
+			r.closeAll()
 
 			for range r.quoteLevel {
 				r.out.WriteString("</blockquote>")
@@ -72,8 +73,14 @@ func (r *renderer) processLine(line string) {
 
 	r.quoteLevel = newQuoteLevel
 
-	if strings.HasPrefix(line, "#") {
-		r.closeParagraphs()
+	if len(line) == 0 {
+		r.closeAll()
+		return
+	}
+
+	switch line[0] {
+	case '#':
+		r.closeAll()
 		space := strings.IndexByte(line, ' ')
 
 		if space > 0 && space <= 6 {
@@ -83,10 +90,19 @@ func (r *renderer) processLine(line string) {
 		}
 
 		return
-	}
 
-	if len(line) == 0 {
+	case '-', '*':
 		r.closeParagraphs()
+		line = strings.TrimSpace(line[1:])
+
+		if r.listLevel == 0 {
+			r.out.WriteString("<ul>")
+			r.listLevel++
+		}
+
+		r.out.WriteString("<li>")
+		r.writeText(line)
+		r.out.WriteString("</li>")
 		return
 	}
 
@@ -101,6 +117,12 @@ func (r *renderer) processLine(line string) {
 	r.writeText(line)
 }
 
+// closeAll closes all open tags.
+func (r *renderer) closeAll() {
+	r.closeLists()
+	r.closeParagraphs()
+}
+
 // closeParagraphs closes open paragraphs.
 func (r *renderer) closeParagraphs() {
 	for range r.paragraphLevel {
@@ -110,6 +132,15 @@ func (r *renderer) closeParagraphs() {
 	r.paragraphLevel = 0
 }
 
+// closeLists closes open lists.
+func (r *renderer) closeLists() {
+	for range r.listLevel {
+		r.out.WriteString("</ul>")
+	}
+
+	r.listLevel = 0
+}
+
 // writeText converts inline markdown to HTML.
 func (r *renderer) writeText(markdown string) {
 	var (
@@ -170,6 +201,7 @@ func (r *renderer) writeText(markdown string) {
 	}
 }
 
+// sanitizeURL makes a URL safe to use as the value for a `href` attribute.
 func sanitizeURL(linkURL string) string {
 	linkURL = strings.TrimSpace(linkURL)