teach mdproc hugo to parse out title

mdproc/hugo.go

@@ -2,6 +2,7 @@ package mdproc
 
 import (
 	"bytes"
+	"fmt"
 	"regexp"
 
 	"github.com/n0x1m/md2gmi/pipe"
@@ -11,12 +12,19 @@ func RemoveFrontMatter(in chan pipe.StreamItem) chan pipe.StreamItem {
 	out := make(chan pipe.StreamItem)
 
 	go func() {
+		// delete the entire front matter
 		re := regexp.MustCompile(`---.*---`)
+		// but parse out the title as we want to reinject it
+		re2 := regexp.MustCompile(`title:[ "]*([a-zA-Z0-9 :!@#$%^&*)(]+)["]*`)
 
 		for b := range in {
 			data := b.Payload()
 			for _, match := range re.FindAllSubmatch(data, -1) {
 				data = bytes.Replace(data, match[0], []byte(""), 1)
+				for _, title := range re2.FindAllSubmatch(match[0], 1) {
+					// prefix title
+					data = append([]byte(fmt.Sprintf("# %s\n\n", title[1])), data...)
+				}
 			}
 			out <- pipe.NewItem(b.Index(), append(bytes.TrimSpace(data), '\n'))
 		}