Expand the path for a specified style file

utils/utils.go

@@ -1,6 +1,11 @@
 package utils
 
-import "regexp"
+import (
+	"os"
+	"regexp"
+
+	"github.com/mitchellh/go-homedir"
+)
 
 func RemoveFrontmatter(content []byte) []byte {
 	if frontmatterBoundaries := detectFrontmatter(content); frontmatterBoundaries[0] == 0 {
@@ -17,3 +22,12 @@ func detectFrontmatter(c []byte) []int {
 	}
 	return []int{-1, -1}
 }
+
+// Expands tilde and all environment variables from the given path.
+func ExpandPath(path string) string {
+	s, err := homedir.Expand(path)
+	if err == nil {
+		return os.ExpandEnv(s)
+	}
+	return os.ExpandEnv(path)
+}