goctl added

tools/goctl/util/env.go

@@ -0,0 +1,35 @@
+package util
+
+import (
+	"fmt"
+	"os"
+	"path"
+	"strings"
+)
+
+func GetFullPackage(pkg string) (string, error) {
+	dir, err := os.Getwd()
+	if err != nil {
+		return "", err
+	}
+
+	pkgPath := path.Join(dir, pkg)
+	info, err := os.Stat(pkgPath)
+	if err != nil {
+		return "", err
+	}
+
+	if !info.IsDir() {
+		return "", fmt.Errorf("%s is not a directory", pkg)
+	}
+
+	gopath := os.Getenv("GOPATH")
+	parent := path.Join(gopath, "src")
+	pos := strings.Index(pkgPath, parent)
+	if pos < 0 {
+		return "", fmt.Errorf("%s is not a correct package", pkg)
+	}
+
+	// skip slash
+	return pkgPath[len(parent)+1:], nil
+}