From 54fa0d34add7f890694b46c04130a3b8584416f5 Mon Sep 17 00:00:00 2001
From: Fred Boniface <fred@fjla.uk>
Date: Mon, 4 Sep 2023 12:05:16 +0100
Subject: [PATCH] Add Code39

---
 generation/code39.go   | 18 ++++++++++++++++++
 generation/generate.go |  2 ++
 generation/types.go    |  1 +
 validation/rules.go    | 14 +++++++-------
 4 files changed, 28 insertions(+), 7 deletions(-)
 create mode 100644 generation/code39.go

diff --git a/generation/code39.go b/generation/code39.go
new file mode 100644
index 0000000..1f92b57
--- /dev/null
+++ b/generation/code39.go
@@ -0,0 +1,18 @@
+package generation
+
+import (
+	"fmt"
+
+	"github.com/boombuler/barcode"
+	"github.com/boombuler/barcode/code39"
+)
+
+func generateCode39(parameters Parameters) (barcode.Barcode, error) {
+	GeneratedBarcode, err := code39.Encode(parameters.Content, true, true)
+	if err != nil {
+		fmt.Println("Error creating Barcode", err)
+	}
+
+	strippedBarcode := GeneratedBarcode.(barcode.Barcode)
+	return strippedBarcode, err
+}
diff --git a/generation/generate.go b/generation/generate.go
index 3fd8cc8..2e6c9f6 100644
--- a/generation/generate.go
+++ b/generation/generate.go
@@ -29,6 +29,8 @@ func Generate(parameters Parameters) (barcode.Barcode, error) {
 		barcode_content, err = generate2of5Interleaved(parameters)
 	case TwoOfFive:
 		barcode_content, err = generate2of5(parameters)
+	case Code39:
+		barcode_content, err = generateCode39(parameters)
 	default:
 		fmt.Println("Unsupported barcode type: ", parameters.Format)
 	}
diff --git a/generation/types.go b/generation/types.go
index d72a83a..577e3aa 100644
--- a/generation/types.go
+++ b/generation/types.go
@@ -12,6 +12,7 @@ const (
 	PDF417               BarcodeType = "pdf417"
 	TwoOfFive            BarcodeType = "2of5"
 	TwoOfFiveInterleaved BarcodeType = "2of5interleaved"
+	Code39               BarcodeType = "code39"
 )
 
 type ECCLevel int
diff --git a/validation/rules.go b/validation/rules.go
index 4879cdc..0289b89 100644
--- a/validation/rules.go
+++ b/validation/rules.go
@@ -41,13 +41,13 @@ var FormatRules = map[string]rule{
 		divisible: 1,
 	},
 
-	/*	"code39": {
-			minLength: 1,
-			maxLength: 80,
-			charset:   *CODE39,
-			divisible: 1,
-		},
-	*/
+	"code39": {
+		minLength: 1,
+		maxLength: 80,
+		charset:   *ASCII,
+		divisible: 1,
+	},
+
 	"code93": {
 		minLength: 1,
 		maxLength: 80,