Add struct tags flag

strmangle/strmangle.go

@@ -487,3 +487,35 @@ func ContainsAny(a []string, finds ...string) bool {
 
 	return false
 }
+
+// GenerateTags converts a slice of tag strings into tags that
+// can be passed onto the end of a struct, for example:
+// tags: ["xml", "db"] convert to: xml:"column_name" db:"column_name"
+func GenerateTags(tags []string, columnName string) string {
+	buf := GetBuffer()
+	defer PutBuffer(buf)
+
+	for _, tag := range tags {
+		buf.WriteString(tag)
+		buf.WriteString(`:"`)
+		buf.WriteString(columnName)
+		buf.WriteString(`" `)
+	}
+
+	return buf.String()
+}
+
+// GenerateIgnoreTags converts a slice of tag strings into
+// ignore tags that can be passed onto the end of a struct, for example:
+// tags: ["xml", "db"] convert to: xml:"-" db:"-"
+func GenerateIgnoreTags(tags []string) string {
+	buf := GetBuffer()
+	defer PutBuffer(buf)
+
+	for _, tag := range tags {
+		buf.WriteString(tag)
+		buf.WriteString(`:"-" `)
+	}
+
+	return buf.String()
+}

strmangle/strmangle_test.go

@@ -426,3 +426,41 @@ func TestContainsAny(t *testing.T) {
 		t.Errorf("Should not return true")
 	}
 }
+
+func TestGenerateTags(t *testing.T) {
+	tags := GenerateTags([]string{}, "col_name")
+	if tags != "" {
+		t.Errorf("Expected empty string, got %s", tags)
+	}
+
+	tags = GenerateTags([]string{"xml"}, "col_name")
+	exp := `xml:"col_name" `
+	if tags != exp {
+		t.Errorf("expected %s, got %s", exp, tags)
+	}
+
+	tags = GenerateTags([]string{"xml", "db"}, "col_name")
+	exp = `xml:"col_name" db:"col_name" `
+	if tags != exp {
+		t.Errorf("expected %s, got %s", exp, tags)
+	}
+}
+
+func TestGenerateIgnoreTags(t *testing.T) {
+	tags := GenerateIgnoreTags([]string{})
+	if tags != "" {
+		t.Errorf("Expected empty string, got %s", tags)
+	}
+
+	tags = GenerateIgnoreTags([]string{"xml"})
+	exp := `xml:"-" `
+	if tags != exp {
+		t.Errorf("expected %s, got %s", exp, tags)
+	}
+
+	tags = GenerateIgnoreTags([]string{"xml", "db"})
+	exp = `xml:"-" db:"-" `
+	if tags != exp {
+		t.Errorf("expected %s, got %s", exp, tags)
+	}
+}