fix: fix the 'No kcl files' error in api.

pkg/api/kpm_pkg.go

@@ -6,6 +6,7 @@ import (
 
 	"kcl-lang.io/kcl-go/pkg/kcl"
 	"kcl-lang.io/kcl-go/pkg/spec/gpyrpc"
+	"kcl-lang.io/kpm/pkg/errors"
 	pkg "kcl-lang.io/kpm/pkg/package"
 )
 
@@ -119,31 +120,32 @@ func (pkg *KclPackage) GetSchemaTypeMappingWithFilters(fileterFuncs []KclTypeFil
 		if info.IsDir() {
 			fileteredKtypeMap := make(map[string]*KclType)
 			schemaTypeMap, err := kcl.GetSchemaTypeMapping(path, "", "")
-			if err != nil {
+			if err != nil && err.Error() != errors.NoKclFiles.Error() {
 				return err
 			}
 
 			relPath, err := filepath.Rel(pkg.GetPkgHomePath(), path)
 			if err != nil {
 				return err
 			}
-
-			for kName, kType := range schemaTypeMap {
-				kTy := NewKclTypes(kName, relPath, kType)
-				filterPassed := true
-				for _, filterFunc := range fileterFuncs {
-					if !filterFunc(kTy) {
-						filterPassed = false
-						break
+			if schemaTypeMap != nil {
+				for kName, kType := range schemaTypeMap {
+					kTy := NewKclTypes(kName, relPath, kType)
+					filterPassed := true
+					for _, filterFunc := range fileterFuncs {
+						if !filterFunc(kTy) {
+							filterPassed = false
+							break
+						}
+					}
+					if filterPassed {
+						fileteredKtypeMap[kName] = kTy
 					}
 				}
-				if filterPassed {
-					fileteredKtypeMap[kName] = kTy
+				if len(fileteredKtypeMap) > 0 {
+					schemaTypes[relPath] = fileteredKtypeMap
 				}
 			}
-			if len(fileteredKtypeMap) > 0 {
-				schemaTypes[relPath] = fileteredKtypeMap
-			}
 		}
 
 		return nil

pkg/api/kpm_pkg_test.go

@@ -135,3 +135,19 @@ func TestGetSchemaTypeMappingWithFilters(t *testing.T) {
 	assert.Equal(t, schemas[filepath.Join(".")]["SchemaWithSameName"].Name, "SchemaWithSameName")
 	assert.Equal(t, schemas[filepath.Join("sub", "sub1")]["SchemaWithSameName"].RelPath, filepath.Join("sub", "sub1"))
 }
+
+func TestGetSchemaTypeUnderEmptyDir(t *testing.T) {
+	pkg_path := filepath.Join(getTestDir("test_kpm_package"), "no_kcl_files")
+	kcl_pkg_path, err := GetKclPkgPath()
+
+	assert.Equal(t, err, nil)
+	pkg, err := GetKclPackage(pkg_path)
+	assert.Equal(t, err, nil)
+	err = pkg.pkg.ResolveDepsMetadata(kcl_pkg_path, true)
+	assert.Equal(t, err, nil)
+	schemas, err := pkg.GetSchemaTypeMappingNamed("SchemaInMain")
+	assert.Equal(t, err, nil)
+	assert.Equal(t, len(schemas), 1)
+	assert.Equal(t, schemas[filepath.Join(".")]["SchemaInMain"].Type, "schema")
+	assert.Equal(t, schemas[filepath.Join(".")]["SchemaInMain"].SchemaName, "SchemaInMain")
+}

pkg/api/test_data/test_kpm_package/no_kcl_files/kcl.mod

@@ -0,0 +1,5 @@
+[package]
+name = "no_kcl_files"
+edition = "0.0.1"
+version = "0.0.1"
+

pkg/api/test_data/test_kpm_package/no_kcl_files/main.k

@@ -0,0 +1,2 @@
+schema SchemaInMain:
+    msg: str

pkg/errors/errors.go

@@ -52,3 +52,6 @@ var PathIsEmpty = errors.New("path is empty.")
 var InvalidPkg = errors.New("invalid kcl package.")
 var InvalidOciUrl = errors.New("invalid oci url.")
 var UnknownEnv = errors.New("invalid environment variable.")
+
+// No kcl files
+var NoKclFiles = errors.New("No input KCL files")