1 files changed, 20 insertions, 1 deletions
diff --git a/src/libslic3r/miniz_extension.hpp b/src/libslic3r/miniz_extension.hpp
index 8d0967cbc..006226bf2 100644
--- a/src/libslic3r/miniz_extension.hpp
+++ b/src/libslic3r/miniz_extension.hpp
@@ -11,6 +11,25 @@ bool open_zip_writer(mz_zip_archive *zip, const std::string &fname_utf8);
 bool close_zip_reader(mz_zip_archive *zip);
 bool close_zip_writer(mz_zip_archive *zip);
 
-}
+class MZ_Archive {
+public:
+    mz_zip_archive arch;
+    
+    MZ_Archive();
+    
+    static std::string get_errorstr(mz_zip_error mz_err);
+    
+    std::string get_errorstr() const
+    {
+        return get_errorstr(arch.m_last_error) + "!";
+    }
+
+    bool is_alive() const
+    {
+        return arch.m_zip_mode != MZ_ZIP_MODE_WRITING_HAS_BEEN_FINALIZED;
+    }
+};
+
+} // namespace Slic3r
 
 #endif // MINIZ_EXTENSION_HPP