Add posts.ExtractTitle func

posts/parse.go

@@ -0,0 +1,19 @@
+package posts
+
+import (
+	"strings"
+)
+
+func ExtractTitle(content string) (title string, body string) {
+	if hashIndex := strings.Index(content, "# "); hashIndex == 0 {
+		eol := strings.IndexRune(content, '\n')
+		// First line should start with # and end with \n
+		if eol != -1 {
+			body = strings.TrimLeft(content[eol:], " \t\n\r")
+			title = content[len("# "):eol]
+			return
+		}
+	}
+	body = content
+	return
+}