barcode

Documentation

Overview

Funciones para generar códigos de barras 1D en formato SVG.

Se han seguido las mismas reglas de generación que usan las impresoras ESC/POS en el comando GS k, consultar https://download4.epson.biz/sec_pubs/pos/reference_en/escpos/gs_lk.html

Index

• func GetBarcodeBARS(code string, kind KIND) (bars, hri string, err error)
• func GetBarcodeSVG(code string, kind KIND, w, h float64, color string, hri HRI, inline bool) (string, error)
• type HRI
• type KIND

Examples

• GetBarcodeBARS
• GetBarcodeSVG

Functions

func GetBarcodeBARS

func GetBarcodeBARS(code string, kind KIND) (bars, hri string, err error)

Genera la secuencia de módulos de las barras de código:

• code: código a representar
• kind: tipo de código de barras

Example

package main

import (
	"fmt"

	"github.com/horus-es/go-util/v2/barcode"
)

func main() {
	bars, hri, _ := barcode.GetBarcodeBARS("123456", barcode.C128X)
	fmt.Printf("%s: %s\n", hri, bars)
}

Output:

123456: 2112321122321311233311211321312331112

func GetBarcodeSVG

func GetBarcodeSVG(code string, kind KIND, w, h float64, color string, hri HRI, inline bool) (string, error)

Genera un documento SVG:

• code: código a representar
• kind: tipo de código de barras
• w: ancho del módulo
• h: altura del código, incluye texto HRI
• hri: posición del texto HRI
• inline: suprime cabeceras SVG para embeber en HTML

Example

package main

import (
	"fmt"

	"github.com/horus-es/go-util/v2/barcode"
)

func main() {
	svg, _ := barcode.GetBarcodeSVG("123456", barcode.C128X, 2, 100, "#000", barcode.Below, false)
	fmt.Print(svg)

}

Output:

<?xml version="1.0" standalone="no" ?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg width="156.00000" height="116.00000" version="1.1" xmlns="http://www.w3.org/2000/svg">
	<g fill="#000" stroke="none">
		<rect x="10.00000" y="0.00000" width="4.00000" height="100.00000" />
		<rect x="16.00000" y="0.00000" width="2.00000" height="100.00000" />
		<rect x="22.00000" y="0.00000" width="6.00000" height="100.00000" />
		<rect x="32.00000" y="0.00000" width="2.00000" height="100.00000" />
		<rect x="36.00000" y="0.00000" width="4.00000" height="100.00000" />
		<rect x="44.00000" y="0.00000" width="6.00000" height="100.00000" />
		<rect x="54.00000" y="0.00000" width="2.00000" height="100.00000" />
		<rect x="62.00000" y="0.00000" width="2.00000" height="100.00000" />
		<rect x="66.00000" y="0.00000" width="4.00000" height="100.00000" />
		<rect x="76.00000" y="0.00000" width="6.00000" height="100.00000" />
		<rect x="88.00000" y="0.00000" width="2.00000" height="100.00000" />
		<rect x="92.00000" y="0.00000" width="4.00000" height="100.00000" />
		<rect x="98.00000" y="0.00000" width="2.00000" height="100.00000" />
		<rect x="106.00000" y="0.00000" width="4.00000" height="100.00000" />
		<rect x="112.00000" y="0.00000" width="6.00000" height="100.00000" />
		<rect x="120.00000" y="0.00000" width="4.00000" height="100.00000" />
		<rect x="130.00000" y="0.00000" width="6.00000" height="100.00000" />
		<rect x="138.00000" y="0.00000" width="2.00000" height="100.00000" />
		<rect x="142.00000" y="0.00000" width="4.00000" height="100.00000" />
	<text x="78.00000" text-anchor="middle" dominant-baseline="hanging" y="102.00000" fill="#000" font-size="15px">123456</text>
	</g>
</svg>

Types

type HRI

type HRI int

const (
	None  HRI = 0
	Above HRI = 1
	Below HRI = 2
	Both  HRI = 3
)

type KIND

type KIND int

const (
	C39     KIND = 1  // Code39
	C93     KIND = 2  // Code93
	I25     KIND = 3  // Interleaved 2/5
	C128    KIND = 4  // Code128 con secuencias esc/pos
	C128X   KIND = 5  // Code128 automático
	EAN13   KIND = 6  // EAN-13
	EAN8    KIND = 7  // EAN-8
	UPCA    KIND = 8  // UPC-A
	UPCE    KIND = 9  // UPC-E
	CODABAR KIND = 10 // CODABAR
)