Allow accessing same filename differently

pkg/davextra/util.go

@@ -0,0 +1,26 @@
+package davextra
+
+import (
+	"fmt"
+	"path/filepath"
+	"regexp"
+	"strings"
+)
+
+func GetLinkFragment(link string) string {
+	re := regexp.MustCompile(`\w+`)
+	matches := re.FindAllString(link, -1) // Returns all matches
+	var longestMatch string
+	for _, match := range matches {
+		if len(match) > len(longestMatch) {
+			longestMatch = match
+		}
+	}
+	return longestMatch[:4]
+}
+
+func InsertLinkFragment(filename, dupeID string) string {
+	ext := filepath.Ext(filename)
+	name := strings.TrimSuffix(filename, ext)
+	return fmt.Sprintf("%s DMM%s%s", name, dupeID, ext)
+}