Merge branch 'master' into master

.gitignore

@@ -1,3 +1,3 @@
 *.zpl
-*.png
+cmd/zplgfa/*.png
 cmd/zplgfa/zplgfa

.travis.yml

@@ -0,0 +1,15 @@
+language: go
+go:
+- 1.11
+env:
+  global:
+  - PATH=$HOME/gopath/bin:$PATH
+  - secure: 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
+install:
+- go get github.com/mattn/goveralls
+- go get github.com/modocache/gover
+- go get -u -t simonwaldherr.de/go/zplgfa/...
+- go get -u -t github.com/simonwaldherr/zplgfa/...
+script:
+- go test -coverprofile=.coverprofile github.com/simonwaldherr/zplgfa/...
+- goveralls -coverprofile=.coverprofile -service=travis-ci -repotoken $COVERALLS_TOKEN

README.md

@@ -1,14 +1,18 @@
 # ZPLGFA Golang Package
 
-[![GoDoc](https://godoc.org/github.com/SimonWaldherr/zplgfa?status.svg)](https://godoc.org/github.com/SimonWaldherr/zplgfa) [![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2FSimonWaldherr%2Fzplgfa.svg?type=shield)](https://app.fossa.io/projects/git%2Bgithub.com%2FSimonWaldherr%2Fzplgfa?ref=badge_shield)
-
+[![GoDoc](https://godoc.org/github.com/SimonWaldherr/zplgfa?status.svg)](https://godoc.org/github.com/SimonWaldherr/zplgfa) 
+[![Build Status](https://travis-ci.org/SimonWaldherr/zplgfa.svg?branch=master)](https://travis-ci.org/SimonWaldherr/zplgfa) 
+[![Coverage Status](https://coveralls.io/repos/github/SimonWaldherr/zplgfa/badge.svg?branch=master)](https://coveralls.io/github/SimonWaldherr/zplgfa?branch=master) 
 [![Go Report Card](https://goreportcard.com/badge/github.com/SimonWaldherr/zplgfa)](https://goreportcard.com/report/github.com/SimonWaldherr/zplgfa) 
 [![codebeat badge](https://codebeat.co/badges/28d795af-6f9b-453a-94c2-4fafb8b5b0d5)](https://codebeat.co/projects/github-com-simonwaldherr-zplgfa-master) 
 [![BCH compliance](https://bettercodehub.com/edge/badge/SimonWaldherr/zplgfa?branch=master)](https://bettercodehub.com/results/SimonWaldherr/zplgfa) 
+[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2FSimonWaldherr%2Fzplgfa.svg?type=shield)](https://app.fossa.io/projects/git%2Bgithub.com%2FSimonWaldherr%2Fzplgfa?ref=badge_shield) 
 [![license](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/SimonWaldherr/zplgfa/master/LICENSE) 
 
 The ZPLGFA Golang package implements some functions to convert PNG, JPEG and GIF files to ZPL compatible ^GF-elements ([Graphic Fields](https://www.zebra.com/us/en/support-downloads/knowledge-articles/gf-graphic-field-zpl-command.html)).
 
+If you need a ready to use application and don't want to hassle around with source code, take a look at the [ZPLGFA CLI Tool](https://github.com/SimonWaldherr/zplgfa/tree/master/cmd/zplgfa) which is based on this package.
+
 ## install
 
 1. [install Golang](https://golang.org/doc/install)

tests/README.md

@@ -0,0 +1,7 @@
+# ZPLGFA Tests
+
+This folder contains some test cases for the ZPLGFA package.  
+The test coverage can be seen at the [coveralls](https://coveralls.io/github/SimonWaldherr/zplgfa?branch=master) project page.  
+
+[![Coverage Status](https://coveralls.io/repos/github/SimonWaldherr/zplgfa/badge.svg?branch=master)](https://coveralls.io/github/SimonWaldherr/zplgfa?branch=master) 
+

zplgfa.go

@@ -89,7 +89,6 @@ func getRepeatCode(repeatCount int, char string) string {
 
 // CompressASCII compresses the ASCII data of a ZPL Graphic Field using RLE
 func CompressASCII(in string) string {
-	in = strings.ToUpper(in)
 	var curChar string
 	var lastChar string
 	var lastCharSince int
@@ -171,7 +170,9 @@ func ConvertToGraphicField(source image.Image, graphicType GraphicType) string {
 				index = 0
 			}
 		}
-		hexstr := hex.EncodeToString(line)
+		
+		hexstr := strings.ToUpper(hex.EncodeToString(line))
+		
 		switch graphicType {
 		case ASCII:
 			GraphicFieldData += fmt.Sprintln(hexstr)
@@ -185,9 +186,6 @@ func ConvertToGraphicField(source image.Image, graphicType GraphicType) string {
 			lastLine = curLine
 		case Binary:
 			GraphicFieldData += fmt.Sprintf("%s", line)
-		default:
-			graphicType = CompressedASCII
-			GraphicFieldData += fmt.Sprintln(CompressASCII(hexstr))
 		}
 	}
 

zplgfa_test.go

@@ -1,11 +1,95 @@
 package zplgfa
 
 import (
+	"encoding/base64"
+	"encoding/json"
+	"image"
+	_ "image/gif"
+	_ "image/jpeg"
+	_ "image/png"
+	"io/ioutil"
+	"log"
+	"os"
+	"strings"
 	"testing"
 )
 
+type zplTest struct {
+	Filename    string `json:"filename"`
+	Zplstring   string `json:"zplstring"`
+	Graphictype string `json:"graphictype"`
+}
+
+var zplTests []zplTest
+
+func init() {
+	jsonstr, _ := ioutil.ReadFile("./tests/tests.json")
+	json.Unmarshal(jsonstr, &zplTests)
+}
+
 func Test_CompressASCII(t *testing.T) {
 	if str := CompressASCII("FFFFFFFF000000"); str != "NFL0" {
 		t.Fatalf("CompressASCII failed")
 	}
 }
+
+func Test_ConvertToZPL(t *testing.T) {
+	var graphicType GraphicType
+	for i, testcase := range zplTests {
+		filename, zplstring, graphictype := testcase.Filename, testcase.Zplstring, testcase.Graphictype
+		// open file
+		file, err := os.Open(filename)
+		if err != nil {
+			log.Printf("Warning: could not open the file \"%s\": %s\n", filename, err)
+			return
+		}
+
+		defer file.Close()
+
+		// load image head information
+		config, format, err := image.DecodeConfig(file)
+		if err != nil {
+			log.Printf("Warning: image not compatible, format: %s, config: %v, error: %s\n", format, config, err)
+		}
+
+		// reset file pointer to the beginning of the file
+		file.Seek(0, 0)
+
+		// load and decode image
+		img, _, err := image.Decode(file)
+		if err != nil {
+			log.Printf("Warning: could not decode the file, %s\n", err)
+			return
+		}
+
+		// flatten image
+		flat := FlattenImage(img)
+
+		// convert image to zpl compatible type
+		switch graphictype {
+		case "ASCII":
+			graphicType = ASCII
+		case "Binary":
+			graphicType = Binary
+		case "CompressedASCII":
+			graphicType = CompressedASCII
+		default:
+			graphicType = CompressedASCII
+		}
+		gfimg := ConvertToZPL(flat, graphicType)
+
+		// remove whitespace - only for the test
+		gfimg = strings.Replace(gfimg, " ", "", -1)
+		gfimg = strings.Replace(gfimg, "\n", "", -1)
+
+		switch graphictype {
+		case "Binary":
+			gfimg = base64.StdEncoding.EncodeToString([]byte(gfimg))
+		}
+
+		if gfimg != zplstring {
+			log.Printf("ConvertToZPL Test for file \"%s\" failed, wanted: \n%s\ngot: \n%s\n", filename, zplstring, gfimg)
+			t.Fatalf("Testcase %d ConvertToZPL failed", i)
+		}
+	}
+}