This project demonstrates how to create a Go (golang) package from a C++ class using SWIG.
This code was originally for a blog post here: http://zacg.github.io/blog/2013/06/06/calling-c-plus-plus-code-from-go-with-swig/, but the instructions refer to earlier versions of Go (before 1.5) and SWIG (before 3.0).
#####Getting Started
cd $GOPATH
go get github.com/zacg/simplelib
cd $GOPATH/src/github.com/zacg/simplelib
go install -x
go test -v
#####Generating simplelib.go and simplelib_wrap.cxx
These files are needed by simplelib_test.go. You need to do this each time the dependent *.h or *.cpp files change.
swig -go -cgo -c++ -intgosize 64 simplelib.i
To clean up the auto-generated files:
\rm -f simplelib.go simplelib_wrap.cxx #####Example Application Code that uses simplelib.go and simplelib_wrap.cxx
You an also look at the unit tests in simplelib_test.go.
package main
import (
"fmt""github.com/zacg/simplelib"
)
funcmain() {
simpleClass:=simplelib.NewSimpleClass()
result:=simpleClass.Hello()
fmt.Println(result)
strings:=simplelib.NewStringVector()
simpleClass.HelloString(strings)
variint64fori=0; i<strings.Size(); i++ {
fmt.Println(strings.Get(int(i)))
}
bytes:=simplelib.NewByteVector()
simpleClass.HelloBytes(bytes)
fori=0; i<bytes.Size(); i++ {
fmt.Printf("%c", bytes.Get(int(i)))
}
fmt.Println("")
}