Exclude libraries with a missing .h file from lib list

Author: MatteoPologruto

Diff for: commands/lib/list.go

@@ -135,6 +135,9 @@ func listLibraries(lm *librariesmanager.LibrariesManager, updatable bool, all bo
 			if updatable && available == nil {
 				continue
 			}
+			if !containsDotH(lib) {
+				continue
+			}
 			res = append(res, &installedLib{
 				Library:   lib,
 				Available: available,
@@ -143,3 +146,27 @@ func listLibraries(lm *librariesmanager.LibrariesManager, updatable bool, all bo
 	}
 	return res
 }
+
+// containsDotH returns true if the directory contains either a "library.properties"
+// or a ".h" file. Returns false otherwise
+func containsDotH(lib *libraries.Library) bool {
+	if lib.InstallDir.Join("library.properties").Exist() {
+		return true
+	}
+	src := lib.InstallDir.Join("src")
+	rootContent, _ := lib.InstallDir.ReadDir()
+	for _, file := range rootContent {
+		if file.HasSuffix(".h") {
+			return true
+		}
+	}
+	if src.Exist() {
+		srcContent, _ := src.ReadDir()
+		for _, file := range srcContent {
+			if file.HasSuffix(".h") {
+				return true
+			}
+		}
+	}
+	return false
+}