7 files changed, 108 insertions, 26 deletions
diff --git a/vendor/github.com/boombuler/barcode/.gitignore b/vendor/github.com/boombuler/barcode/.gitignore
new file mode 100644
index 0000000000..1d74e21965
--- /dev/null
+++ b/vendor/github.com/boombuler/barcode/.gitignore
@@ -0,0 +1 @@
+.vscode/
diff --git a/vendor/github.com/boombuler/barcode/README.md b/vendor/github.com/boombuler/barcode/README.md
index 85c34d6390..2a988db399 100644
--- a/vendor/github.com/boombuler/barcode/README.md
+++ b/vendor/github.com/boombuler/barcode/README.md
@@ -1,18 +1,53 @@
-##Introduction##
+[![Join the chat at https://gitter.im/golang-barcode/Lobby](https://badges.gitter.im/golang-barcode/Lobby.svg)](https://gitter.im/golang-barcode/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+
+## Introduction ##
+
 This is a package for GO which can be used to create different types of barcodes.
 
-##Supported Barcode Types##
+## Supported Barcode Types ##
+* 2 of 5
 * Aztec Code
 * Codabar
 * Code 128
 * Code 39
-* EAN 8
-* EAN 13
+* Code 93
 * Datamatrix
-* QR Codes
-* 2 of 5
+* EAN 13
+* EAN 8
+* PDF 417
+* QR Code
+
+## Example ##
+
+This is a simple example on how to create a QR-Code and write it to a png-file
+```go
+package main
+
+import (
+	"image/png"
+	"os"
+
+	"github.com/boombuler/barcode"
+	"github.com/boombuler/barcode/qr"
+)
+
+func main() {
+	// Create the barcode
+	qrCode, _ := qr.Encode("Hello World", qr.M, qr.Auto)
+
+	// Scale the barcode to 200x200 pixels
+	qrCode, _ = barcode.Scale(qrCode, 200, 200)
+
+	// create the output file
+	file, _ := os.Create("qrcode.png")
+	defer file.Close()
+
+	// encode the barcode as png
+	png.Encode(file, qrCode)
+}
+```
 
-##Documentation##
+## Documentation ##
 See [GoDoc](https://godoc.org/github.com/boombuler/barcode)
 
 To create a barcode use the Encode function from one of the subpackages.
diff --git a/vendor/github.com/boombuler/barcode/barcode.go b/vendor/github.com/boombuler/barcode/barcode.go
index 7e147f22f4..25f4a693db 100644
--- a/vendor/github.com/boombuler/barcode/barcode.go
+++ b/vendor/github.com/boombuler/barcode/barcode.go
@@ -2,6 +2,21 @@ package barcode
 
 import "image"
 
+const (
+	TypeAztec           = "Aztec"
+	TypeCodabar         = "Codabar"
+	TypeCode128         = "Code 128"
+	TypeCode39          = "Code 39"
+	TypeCode93          = "Code 93"
+	TypeDataMatrix      = "DataMatrix"
+	TypeEAN8            = "EAN 8"
+	TypeEAN13           = "EAN 13"
+	TypePDF             = "PDF417"
+	TypeQR              = "QR Code"
+	Type2of5            = "2 of 5"
+	Type2of5Interleaved = "2 of 5 (interleaved)"
+)
+
 // Contains some meta information about a barcode
 type Metadata struct {
 	// the name of the barcode kind
@@ -17,5 +32,11 @@ type Barcode interface {
 	Metadata() Metadata
 	// the data that was encoded in this barcode
 	Content() string
+}
+
+// Additional interface that some barcodes might implement to provide
+// the value of its checksum.
+type BarcodeIntCS interface {
+	Barcode
 	CheckSum() int
 }
diff --git a/vendor/github.com/boombuler/barcode/go.mod b/vendor/github.com/boombuler/barcode/go.mod
new file mode 100644
index 0000000000..ed53593b92
--- /dev/null
+++ b/vendor/github.com/boombuler/barcode/go.mod
@@ -0,0 +1 @@
+module github.com/boombuler/barcode
diff --git a/vendor/github.com/boombuler/barcode/qr/qrcode.go b/vendor/github.com/boombuler/barcode/qr/qrcode.go
index ab123ce8fc..13607604bb 100644
--- a/vendor/github.com/boombuler/barcode/qr/qrcode.go
+++ b/vendor/github.com/boombuler/barcode/qr/qrcode.go
@@ -20,7 +20,7 @@ func (qr *qrcode) Content() string {
 }
 
 func (qr *qrcode) Metadata() barcode.Metadata {
-	return barcode.Metadata{"QR Code", 2}
+	return barcode.Metadata{barcode.TypeQR, 2}
 }
 
 func (qr *qrcode) ColorModel() color.Model {
@@ -46,10 +46,6 @@ func (qr *qrcode) Set(x, y int, val bool) {
 	qr.data.SetBit(x*qr.dimension+y, val)
 }
 
-func (qr *qrcode) CheckSum() int {
-	return 0
-}
-
 func (qr *qrcode) calcPenalty() uint {
 	return qr.calcPenaltyRule1() + qr.calcPenaltyRule2() + qr.calcPenaltyRule3() + qr.calcPenaltyRule4()
 }
diff --git a/vendor/github.com/boombuler/barcode/scaledbarcode.go b/vendor/github.com/boombuler/barcode/scaledbarcode.go
index c59c9fe7b7..152b180174 100644
--- a/vendor/github.com/boombuler/barcode/scaledbarcode.go
+++ b/vendor/github.com/boombuler/barcode/scaledbarcode.go
@@ -16,6 +16,10 @@ type scaledBarcode struct {
 	rect        image.Rectangle
 }
 
+type intCSscaledBC struct {
+	scaledBarcode
+}
+
 func (bc *scaledBarcode) Content() string {
 	return bc.wrapped.Content()
 }
@@ -36,8 +40,11 @@ func (bc *scaledBarcode) At(x, y int) color.Color {
 	return bc.wrapperFunc(x, y)
 }
 
-func (bc *scaledBarcode) CheckSum() int {
-	return bc.wrapped.CheckSum()
+func (bc *intCSscaledBC) CheckSum() int {
+	if cs, ok := bc.wrapped.(BarcodeIntCS); ok {
+		return cs.CheckSum()
+	}
+	return 0
 }
 
 // Scale returns a resized barcode with the given width and height.
@@ -52,6 +59,19 @@ func Scale(bc Barcode, width, height int) (Barcode, error) {
 	return nil, errors.New("unsupported barcode format")
 }
 
+func newScaledBC(wrapped Barcode, wrapperFunc wrapFunc, rect image.Rectangle) Barcode {
+	result := &scaledBarcode{
+		wrapped:     wrapped,
+		wrapperFunc: wrapperFunc,
+		rect:        rect,
+	}
+
+	if _, ok := wrapped.(BarcodeIntCS); ok {
+		return &intCSscaledBC{*result}
+	}
+	return result
+}
+
 func scale2DCode(bc Barcode, width, height int) (Barcode, error) {
 	orgBounds := bc.Bounds()
 	orgWidth := orgBounds.Max.X - orgBounds.Min.X
@@ -59,7 +79,7 @@ func scale2DCode(bc Barcode, width, height int) (Barcode, error) {
 
 	factor := int(math.Min(float64(width)/float64(orgWidth), float64(height)/float64(orgHeight)))
 	if factor <= 0 {
-		return nil, fmt.Errorf("can not scale barcode to an image smaller then %dx%d", orgWidth, orgHeight)
+		return nil, fmt.Errorf("can not scale barcode to an image smaller than %dx%d", orgWidth, orgHeight)
 	}
 
 	offsetX := (width - (orgWidth * factor)) / 2
@@ -77,11 +97,11 @@ func scale2DCode(bc Barcode, width, height int) (Barcode, error) {
 		return bc.At(x, y)
 	}
 
-	return &scaledBarcode{
+	return newScaledBC(
 		bc,
 		wrap,
 		image.Rect(0, 0, width, height),
-	}, nil
+	), nil
 }
 
 func scale1DCode(bc Barcode, width, height int) (Barcode, error) {
@@ -90,7 +110,7 @@ func scale1DCode(bc Barcode, width, height int) (Barcode, error) {
 	factor := int(float64(width) / float64(orgWidth))
 
 	if factor <= 0 {
-		return nil, fmt.Errorf("can not scale barcode to an image smaller then %dx1", orgWidth)
+		return nil, fmt.Errorf("can not scale barcode to an image smaller than %dx1", orgWidth)
 	}
 	offsetX := (width - (orgWidth * factor)) / 2
 
@@ -106,10 +126,9 @@ func scale1DCode(bc Barcode, width, height int) (Barcode, error) {
 		return bc.At(x, 0)
 	}
 
-	return &scaledBarcode{
+	return newScaledBC(
 		bc,
 		wrap,
 		image.Rect(0, 0, width, height),
-	}, nil
-
+	), nil
 }
diff --git a/vendor/github.com/boombuler/barcode/utils/base1dcode.go b/vendor/github.com/boombuler/barcode/utils/base1dcode.go
index 22a2e30205..a335c0c741 100644
--- a/vendor/github.com/boombuler/barcode/utils/base1dcode.go
+++ b/vendor/github.com/boombuler/barcode/utils/base1dcode.go
@@ -10,8 +10,12 @@ import (
 
 type base1DCode struct {
 	*BitList
-	kind     string
-	content  string
+	kind    string
+	content string
+}
+
+type base1DCodeIntCS struct {
+	base1DCode
 	checksum int
 }
 
@@ -38,11 +42,16 @@ func (c *base1DCode) At(x, y int) color.Color {
 	return color.White
 }
 
-func (c *base1DCode) CheckSum() int {
+func (c *base1DCodeIntCS) CheckSum() int {
 	return c.checksum
 }
 
+// New1DCodeIntCheckSum creates a new 1D barcode where the bars are represented by the bits in the bars BitList
+func New1DCodeIntCheckSum(codeKind, content string, bars *BitList, checksum int) barcode.BarcodeIntCS {
+	return &base1DCodeIntCS{base1DCode{bars, codeKind, content}, checksum}
+}
+
 // New1DCode creates a new 1D barcode where the bars are represented by the bits in the bars BitList
-func New1DCode(codeKind, content string, bars *BitList, checksum int) barcode.Barcode {
-	return &base1DCode{bars, codeKind, content, checksum}
+func New1DCode(codeKind, content string, bars *BitList) barcode.Barcode {
+	return &base1DCode{bars, codeKind, content}
 }