refactor: simpler frontmatter parser (replace regexp with bytes pkg)

1 files changed, 8 insertions, 6 deletions

diff --git a/internal/frontmatter/parser.go b/internal/frontmatter/parser.go
index 6062113..942760c 100644
--- a/internal/frontmatter/parser.go
+++ b/internal/frontmatter/parser.go
@@ -1,8 +1,8 @@
 package frontmatter
 
 import (
+	"bytes"
 	"fmt"
-	"regexp"
 	"time"
 
 	"gopkg.in/yaml.v3"
@@ -22,15 +22,17 @@ type Metadata struct {
 }
 
 func ParseFrontmatter(content []byte) (metadata *Metadata, markdown []byte, err error) {
-	frontmatterRegex := regexp.MustCompile(`^---\s*\r?\n([\s\S]*?)\r?\n---\s*\r?\n([\s\S]*)$`)
-	matches := frontmatterRegex.FindSubmatch(content)
+	if !bytes.HasPrefix(content, []byte("---\n")) {
+		return nil, content, nil
+	}
 
-	if len(matches) != 3 {
+	end := bytes.Index(content[4:], []byte("\n---\n"))
+	if end == -1 {
 		return nil, content, nil
 	}
 
-	yamlContent := matches[1]
-	markdownContent := matches[2]
+	yamlContent := content[4 : end+4]
+	markdownContent := content[end+9:]
 
 	metadata = &Metadata{}
 	if err := yaml.Unmarshal([]byte(yamlContent), &metadata); err != nil {