if program dir is empty, pack the source code

Signed-off-by: onur-ozkan <work@onurozkan.dev>

lpm-builder/pkg/builder/builder.go

@@ -38,6 +38,8 @@ func prepare(templateDir string) BuilderCtx {
 
 	ctx.TemplateFields = template.DeserializeTemplate(ctx.TemplateDir)
 
+	ctx.PkgFilesData = make([]File, 0)
+
 	ctx.System.BuilderVersion = common.BuilderVersion
 	ctx.System.MinSupportedLpmVersion = common.MinSupportedLpmVersion
 

lpm-builder/pkg/builder/pack.go

@@ -2,20 +2,27 @@ package builder
 
 import (
 	"context"
+	"io/ioutil"
 	"os"
 	"path/filepath"
 
 	"github.com/mholt/archiver/v4"
 )
 
 func PackLodFile(rootDir string, destFile string) error {
-	// absolute path -- package level path
 	filesToPack := map[string]string{
 		filepath.Join(rootDir, "meta"):        "meta",
-		filepath.Join(rootDir, "program"):     "program",
 		filepath.Join(rootDir, "scripts"):     "scripts",
 		filepath.Join(rootDir, "system.json"): "system.json",
 	}
+
+	programPath := filepath.Join(rootDir, "program")
+	if content, _ := ioutil.ReadDir(programPath); len(content) != 0 {
+		filesToPack[programPath] = "program"
+    } else {
+		filesToPack[filepath.Join(rootDir, "src") ] = "src"
+	}
+
 	files, err := archiver.FilesFromDisk(nil, filesToPack)
 
 	if err != nil {