Add initial filds to the builder

pkg/types/omp/bpc.go

@@ -0,0 +1,9 @@
+package omp
+
+type BPC struct {
+	
+}
+
+func (s BPC) Init() {
+
+}

pkg/types/omp/header.go

@@ -0,0 +1,20 @@
+package omp
+
+type Header struct {
+	Data []byte
+}
+
+func (h *Header) Init() {
+	h.Data = []byte(`; OM File Header - Saved 2022/12/29 14:43:16
+; (6.19 :patc (om-make-point 10 10) (om-make-point 50 50) (om-make-point 500 400) "" 183 0 "2022/12/29 14:43:16" "2022/12/29 14:43:16")
+; End File Header
+`)
+}
+
+func (h *Header) GetData() []byte {
+	return h.Data
+}
+
+func (h *Header) DataToString() string {
+	return string(h.Data)
+}

pkg/types/omp/header_test.go

@@ -0,0 +1,21 @@
+package omp_test
+
+import (
+	"goids/pkg/types/omp"
+	"testing"
+)
+
+const headerExample = `; OM File Header - Saved 2022/12/29 14:43:16
+; (6.19 :patc (om-make-point 10 10) (om-make-point 50 50) (om-make-point 500 400) "" 183 0 "2022/12/29 14:43:16" "2022/12/29 14:43:16")
+; End File Header
+`
+
+func TestAbs(t *testing.T) {
+	header := &omp.Header{}
+	header.Init()
+	str := header.DataToString()
+	if str != headerExample {
+		t.Errorf("Header is wrong\nwant:\n%s \n\ngot \n%s", headerExample, str)
+	}
+
+}

pkg/types/omp/omp.go

@@ -0,0 +1,37 @@
+package omp
+
+import "bytes"
+
+type OMP struct {
+	Header Header
+	Data   Data
+}
+
+func (s OMP) Build() []byte {
+	buff := bytes.NewBufferString("")
+	buff.Write(s.Header.GetData())
+	buff.Write(s.Data.GetIntro())
+	buff.Write(s.Data.GetLibFor())
+	return buff.Bytes()
+}
+
+type Data struct {
+	Intro  []byte
+	LibFor []byte
+}
+
+func (s *Data) GetIntro() []byte {
+	return s.Intro
+}
+
+func (s *Data) SetIntro() {
+	s.Intro = []byte("(in-package :om)")
+}
+
+func (s *Data) GetLibFor() []byte {
+	return s.LibFor
+}
+
+func (s *Data) SetLibFor() {
+	s.LibFor = []byte("(load-lib-for (quote nil))")
+}

pkg/types/omp/omp_test.go

@@ -0,0 +1,23 @@
+package omp_test
+
+import (
+	"goids/pkg/types/omp"
+	"testing"
+)
+
+const ompExample = `; OM File Header - Saved 2022/12/29 14:43:16
+; (6.19 :patc (om-make-point 10 10) (om-make-point 50 50) (om-make-point 500 400) "" 183 0 "2022/12/29 14:43:16" "2022/12/29 14:43:16")
+; End File Header
+(in-package :om)(load-lib-for (quote nil))`
+
+func TestOmpBuilder(t *testing.T) {
+	header := &omp.OMP{}
+	header.Data.SetIntro()
+	header.Data.SetLibFor()
+	header.Header.Init()
+	str := string(header.Build())
+	if str != ompExample {
+		t.Errorf("Header is wrong\nwant:\n%s \n\ngot \n%s", ompExample, str)
+	}
+
+}