Use enry language type to detect special languages (go-gitea#11974)

Author: lafriks

modules/git/repo_language_stats.go

@@ -20,20 +20,6 @@ import (
 const fileSizeLimit int64 = 16 * 1024 // 16 KiB
 const bigFileSize int64 = 1024 * 1024 // 1 MiB
 
-// specialLanguages defines list of languages that are excluded from the calculation
-// unless they are the only language present in repository. Only languages which under
-// normal circumstances are not considered to be code should be listed here.
-var specialLanguages = []string{
-	"XML",
-	"JSON",
-	"TOML",
-	"YAML",
-	"INI",
-	"SVG",
-	"Text",
-	"Markdown",
-}
-
 // GetLanguageStats calculates language stats for git repository at specified commit
 func (repo *Repository) GetLanguageStats(commitID string) (map[string]int64, error) {
 	r, err := git.PlainOpen(repo.Path)
@@ -95,8 +81,11 @@ func (repo *Repository) GetLanguageStats(commitID string) (map[string]int64, err
 
 	// filter special languages unless they are the only language
 	if len(sizes) > 1 {
-		for _, language := range specialLanguages {
-			delete(sizes, language)
+		for language := range sizes {
+			langtype := enry.GetLanguageType(language)
+			if langtype != enry.Programming && langtype != enry.Markup {
+				delete(sizes, language)
+			}
 		}
 	}