ups

package module

v0.1.5 Latest Latest Go to latest Published: Jul 27, 2021 License: MIT Imports: 28 Imported by: 0

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Repository

github.com/SimonWaldherr/ups

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Open Source Insights

README ¶

UPS - Uncommon Printing System

a simple printing system for labels

I wrote the Uncommon Printing System a long time ago to replace a proprietary printing system called NiceWatch by NiceLabel. Don't get me wrong, Nice Label Designer is still the best WYSIWYG Label Editor on Earth, but NiceWatch is slow and unstable. The UPS is programmed to support Label Templates designed with NiceLabel Designer and print them on ZPL compatible printers.

This repository contains a refactored version of UPS. It only contains general purpose features, features like:

handling invalid XML-Files from SAP systems
reload missing data in XML-Files from SAP systems
save log-data to a BI (business intelligence) system
transfer material master data to a sub-system
load printer data from a SAP database table

are not included.

I use UPS in a customized version to print up to 10000 labels daily. UPS can also do a lot more with ease, but in the current case of application it is not needed. You can even run UPS on a Raspberry Pi.

Currently I only print on Zebra ZM400, Zebra ZT410, Zebra QL 420 (plus) and Zebra QLn 420, but I plan to extend the UPS to support non ZPL printers as well.

Test it

to test the application you can simply follow these steps:

go get simonwaldherr.de/go/ups/cmd/ups
ups &
nc -l 9100 > zpl &
cat xmlreq.xml | nc localhost 30000
kill -9 $(pidof ups)

Why

Why what? Why I wrote the application? Because I did not want to bother anymore with an unstable proprietary software! I wasted several hours a week managing the NiceWatch system and keeping it running. I had much better things to do and that's why I wrote UPS.

Why I made some choices the way I made them? Mostly there is also a reasonable cause - you want an example? There is a function called cdatafy which adds CDATA-sections to the XML-string. You may ask why on earth someone would need such a function. Because many SAP developers don't know anything about XML in general and XML marshalling in specific, so they just concatenate strings and as result they create invalid XMLs. It seems like the favorite word of most SAP consultants is standard, but when it comes to actual W3C, WHATWG, IETF, ISO, … standards, they do not care.

But

If you only need a tool to print images on a Label-printer you can use this tool:

Is it any good?

Yes

License

MIT

Documentation ¶

Index ¶

Variables
func HttpPostRequest(url, msgbody string) (string, error)
func InitHTTP()
func InitTelnet()
func LogInit(infoHandle io.Writer, warningHandle io.Writer, errorHandle io.Writer)
func ParseLabels(labeldir string) ([]string, map[string]string)
func PrintMessages()
func PrinterType(str string) string
type Connections
- func (hub *Connections) Init()
type Device
type Devices
- func CreateDeviceMap() *Devices
- func LoadPrinter(filename string) *Devices
- func (devices *Devices) Set(Mandant, Name, IP, Port, Info string, DPI int, PeelOff bool)
type Head
type LogMsg
type Variables
- func ParseDocumentXML(xmlString string) Variables

Constants ¶

This section is empty.

Variables ¶

View Source

var (
	Info    *log.Logger
	Warning *log.Logger
	Error   *log.Logger
)

View Source

var Hub = &Connections{
	clients:      make(map[chan LogMsg]bool),
	addClient:    make(chan (chan LogMsg)),
	removeClient: make(chan (chan LogMsg)),
	messages:     make(chan LogMsg),
}

View Source

var Labels []string

View Source

var Ltemplate = make(map[string]string)

Functions ¶

func HttpPostRequest ¶

func HttpPostRequest(url, msgbody string) (string, error)

func InitHTTP ¶

func InitHTTP()

func InitTelnet ¶

func InitTelnet()

func LogInit ¶

func LogInit(
	infoHandle io.Writer,
	warningHandle io.Writer,
	errorHandle io.Writer)

func ParseLabels ¶

func ParseLabels(labeldir string) ([]string, map[string]string)

func PrintMessages ¶

func PrintMessages()

func PrinterType ¶

func PrinterType(str string) string

Types ¶

type Connections ¶

type Connections struct {
	// contains filtered or unexported fields
}

func (*Connections) Init ¶

func (hub *Connections) Init()

type Device ¶

type Device struct {
	Mandt string
	Name  string
	IP    string
	Port  string
	Info  string
	DPI   int
	Peel  bool
}

type Devices ¶

type Devices struct {
	Devs map[string]*Device
}

var Printer *Devices

func CreateDeviceMap ¶

func CreateDeviceMap() *Devices

func LoadPrinter ¶

func LoadPrinter(filename string) *Devices

func (*Devices) Set ¶

func (devices *Devices) Set(Mandant, Name, IP, Port, Info string, DPI int, PeelOff bool)

type Head ¶

type Head struct {
	Label   string
	Printer string
	Count   string
}

type LogMsg ¶

type LogMsg struct {
	Date    string
	Str     string
	Msgtype string
	Dst     string
	Ip      string
	Label   string
	Weight  string
}

type Variables ¶

type Variables struct {
	Head Head
	Data classAccessesMap `xml:"Data"`
}

func ParseDocumentXML ¶

func ParseDocumentXML(xmlString string) Variables

Source Files ¶

View all Source files

Directories ¶

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