// NewGenerator initializes a Generator
func NewGenerator(pkg, target string) (*Generator, error) {
var err error
if pkg == "" || pkg[0] == '.' {
pkg, err = filepath.Abs(filepath.Clean(pkg))
if err != nil {
return nil, err
}
pkg = gogenutil.StripGopath(pkg)
}
p, err := importer.Default().Import(pkg)
if err != nil {
return nil, err
}
obj := p.Scope().Lookup(target)
if obj == nil {
return nil, fmt.Errorf("struct %s missing", target)
}
if _, ok := obj.Type().Underlying().(*types.Struct); !ok {
return nil, fmt.Errorf("%s should be an struct, was %s", target, obj.Type().Underlying())
}
return &Generator{
targetName: target,
pkg: p,
target: obj.Type().Underlying().(*types.Struct),
}, nil
}
func main() {
flag.Parse()
log.SetFlags(0)
iface := flag.Arg(0)
if iface == "" {
log.Fatal("need to specify an interface name")
}
parts := strings.Split(iface, ".")
switch len(parts) {
case 1:
case 2:
if *pkg != "." {
log.Fatalf("unexpected -pkg value (%q), package is already defined in the interface name as %s", *pkg, parts[0])
}
*pkg = parts[0]
iface = parts[1]
default:
log.Fatalf("invalid interface %q", iface)
}
gen, err := automock.NewGenerator(*pkg, iface)
if err != nil {
log.Fatal(err)
}
gen.SetTemplate(template)
if *mockName != "" {
gen.SetName(*mockName)
}
inPkg := *pkg == "." && path.Dir(*out) == "."
gen.SetInternal(inPkg)
if *mockPkg == "" && !inPkg {
p, err := importer.Default().Import(".")
if err != nil {
log.Fatal(err)
}
*mockPkg = p.Name()
}
if *mockPkg != "" {
gen.SetPackage(*mockPkg)
}
w := os.Stdout
if *out == "" {
*out = fmt.Sprintf("%s_test.go", gen.Name())
if p := regexp.MustCompile(".*/").ReplaceAllString(*pkg, ""); !inPkg && p != "" && p != "." {
*out = p + "_" + *out
}
}
if *out != "-" {
*out = strconv.SnakeCase(*out)
log.Printf("Generating mock for %s in %s", iface, *out)
w, err = os.OpenFile(*out, os.O_CREATE|os.O_RDWR|os.O_TRUNC, 0666)
if err != nil {
log.Fatal(err)
}
}
err = gen.Write(w)
switch err := err.(type) {
case automock.GenerationError:
log.Println(err.CodeWithLineNumbers())
log.Fatal(err)
case error:
log.Fatal(err)
}
}