Golang Barcode QR Code Reader

This project serves as a Golang wrapper for the Dynamsoft Barcode Reader C++ SDK. With this module, you can efficiently read various types of barcodes and symbols, including QR Codes (and Micro QR Codes), Data Matrix, PDF417 (and Micro PDF417), Aztec Code, MaxiCode (modes 2-5), and DotCode from images and PDF files.

Prerequisites

• Go
• Dynamsoft Barcode Reader v9.x trial license.

Supported Platforms

• Windows
• Linux
• macOS

Test the Module

# Windows
.\run_windows_test.ps1

# Linux
./run_linux_test.sh

## mac
chmod +x run_mac_test.sh
sudo ./run_mac_test.sh

How to Use the Go Module

1. Download the Go module:

   go get github.com/yushulx/goBarcodeQrSDK

2. Import the package in your Go file:

   import (
   	"github.com/yushulx/goBarcodeQrSDK"
   )

3. Specify the dynamic library path at runtime before running Go apps.

   • Windows

      $originalPath = $env:PATH
     
      # Get the GOPATH
      $GOPATH = $(go env GOPATH)
     
      # Find the path to the shared libraries
      $PACKAGE_PATH = Get-ChildItem -Path "$GOPATH\pkg\mod\github.com\yushulx" -Directory | Sort-Object LastWriteTime -Descending | Select-Object -First 1 -ExpandProperty FullName
      Write-Host "PACKAGE_PATH set to $PACKAGE_PATH"
      $LIBRARY_PATH = "$PACKAGE_PATH\lib\windows"
     
      Write-Host "LIBRARY_PATH set to $LIBRARY_PATH"
      # Update PATH to include the assembly path
      $env:PATH = "$LIBRARY_PATH;" + $env:PATH
      # Write-Host "PATH set to $($env:PATH)"
     
      # Run your Go application
      go run test.go test.png
     
      $env:PATH = $originalPath

   • Linux

      #!/bin/bash
     
      # Save the original PATH
      originalPath=$LD_LIBRARY_PATH
     
      # Get the GOPATH
      GOPATH=$(go env GOPATH)
     
      # Find the path to the shared libraries
      PACKAGE_PATH=$(find "$GOPATH/pkg/mod/github.com/yushulx" -mindepth 1 -maxdepth 1 -type d | sort -r | head -n 1)
      echo "PACKAGE_PATH set to $PACKAGE_PATH"
      LIBRARY_PATH="$PACKAGE_PATH/lib/linux"
     
      echo "LIBRARY_PATH set to $LIBRARY_PATH"
     
      export LD_LIBRARY_PATH="$LIBRARY_PATH:$originalPath"
     
      # Run your Go application
      go run test.go test.png
     
      # Restore the original PATH
      export LD_LIBRARY_PATH=$originalPath

   • macOS

      #!/bin/bash
     
      # Save the original PATH
      originalPath=$LD_LIBRARY_PATH
     
      # Get the GOPATH
      GOPATH=$(go env GOPATH)
     
      # Find the path to the shared libraries
      PACKAGE_PATH=$(find "$GOPATH/pkg/mod/github.com/yushulx" -mindepth 1 -maxdepth 1 -type d | sort -r | head -n 1)
      echo "PACKAGE_PATH set to $PACKAGE_PATH"
      RPATH="$PACKAGE_PATH/lib/mac"
     
      echo "LIBRARY_PATH set to $LIBRARY_PATH"
     
      TARGET="testapp"
     
      go build -o $TARGET
     
      if ! otool -l $TARGET | grep -q $RPATH; then
      	echo "Adding rpath $RPATH to $TARGET"
      	install_name_tool -add_rpath $RPATH $TARGET
      else
      	echo "RPATH $RPATH already exists in $TARGET"
      fi
     
      ./$TARGET test.png
     
      rm ./$TARGET

Parameter Configuration

https://www.dynamsoft.com/barcode-reader/docs/core/parameters/structure-and-interfaces-of-parameters.html

Quick Start

Set the license key within the InitLicense() function, and replace the image-file with the path of the image file you wish to decode.

package main

import (
	"fmt"
	"time"

	"github.com/yushulx/goBarcodeQrSDK"
)

func main() {
	ret, _ := goBarcodeQrSDK.InitLicense("LICENSE-KEY")
	if ret != 0 {
		fmt.Printf(`initLicense("") = %d`, ret)
	}
	obj := goBarcodeQrSDK.CreateBarcodeReader()
	obj.SetParameters("{\"ImageParameter\":{\"BarcodeFormatIds\":[\"BF_ONED\",\"BF_PDF417\",\"BF_QR_CODE\",\"BF_DATAMATRIX\"],\"BarcodeFormatIds_2\":null,\"Name\":\"sts\",\"RegionDefinitionNameArray\":[\"region0\"]},\"RegionDefinition\":{\"Bottom\":100,\"Left\":0,\"MeasuredByPercentage\":1,\"Name\":\"region0\",\"Right\":100,\"Top\":0}}")
	startTime := time.Now()
	code, barcodes := obj.DecodeFile("image-file")
	elapsed := time.Since(startTime)
	fmt.Println("DecodeFile() time cost: ", elapsed)

	if code != 0 {
		fmt.Printf(`DecodeFile() = %d`, code)
	}

	for i := 0; i < len(barcodes); i++ {
		barcode := barcodes[i]
		fmt.Println(barcode.Text)
		fmt.Println(barcode.Format)
		fmt.Println(barcode.X1)
		fmt.Println(barcode.Y1)
		fmt.Println(barcode.X2)
		fmt.Println(barcode.Y2)
		fmt.Println(barcode.X3)
		fmt.Println(barcode.Y3)
		fmt.Println(barcode.X4)
		fmt.Println(barcode.Y4)
	}
}

Example

• Command-line
• Web

Docker Build

• Build and run barcode QR code reader in Docker:

  docker build -t golang-barcode-qr-reader .
  docker run -it --rm golang-barcode-qr-reader

• Read barcode and QR code from a local image file:

  docker run -it --rm -v <image-folder>:/app golang-barcode-qr-reader reader /app/<image-file> <license-key> <template-file>

Docker Usage

https://hub.docker.com/repository/docker/yushulx/golang-barcode-qr-reader

docker run -it --rm -v <image-folder>:/app yushulx/golang-barcode-qr-reader:latest reader /app/<image-file> <license-key> <template-file>