Working an ALPM (ArchLinux Package Manager) library for Go

main.go

package alpm

// #cgo LDFLAGS: -lalpm
// #include <alpm.h>
import "C"

//import "fmt"
import "errors"

type ALPM struct {
	Root string
	DBPath string
	// private stuff
	handle *C.alpm_handle_t
}

func CreateALPM(root, dbpath string) ALPM {
	return ALPM{root, dbpath, nil}
}

func (alpm *ALPM) Initialize() error {
	var result C.alpm_errno_t
	alpm.handle = C.alpm_initialize(C.CString(alpm.Root), C.CString(alpm.DBPath), &result)

	if (result != 0) {
		return errors.New(C.GoString(C.alpm_strerror(result)))
	}

	return nil
}

func (alpm *ALPM) Release() error {
	n, err := C.alpm_release(alpm.handle)

	// reset handle
	alpm.handle = nil;

	if (n != 0) {
		return errors.New("Couldn't release handle")
	}

	if (err != nil) {
		return err
	}

	return nil
}

func (alpm *ALPM) GetLocalDb() DB {
	db := C.alpm_get_localdb(alpm.handle)
	return DB{db}
}