Repo created

libs/platform/mwm_version.cpp

@@ -0,0 +1,74 @@
+#include "mwm_version.hpp"
+
+#include "coding/files_container.hpp"
+#include "coding/varint.hpp"
+#include "coding/writer.hpp"
+
+#include "base/gmtime.hpp"
+#include "base/string_utils.hpp"
+#include "base/timer.hpp"
+
+#include "defines.hpp"
+
+#include <sstream>
+
+namespace version
+{
+namespace
+{
+char const MWM_PROLOG[] = "MWM";
+}
+
+MwmVersion MwmVersion::Read(FilesContainerR const & container)
+{
+  ModelReaderPtr versionReader = container.GetReader(VERSION_FILE_TAG);
+  ReaderSource<ModelReaderPtr> src(versionReader);
+
+  size_t const prologSize = ARRAY_SIZE(MWM_PROLOG);
+  char prolog[prologSize];
+  src.Read(prolog, prologSize);
+
+  if (strcmp(prolog, MWM_PROLOG) != 0)
+    MYTHROW(CorruptedMwmFile, ());
+
+  MwmVersion version;
+  version.m_format = static_cast<Format>(ReadVarUint<uint32_t>(src));
+  version.m_secondsSinceEpoch = ReadVarUint<uint32_t>(src);
+  return version;
+}
+
+uint32_t MwmVersion::GetVersion() const
+{
+  auto const tm = base::GmTime(base::SecondsSinceEpochToTimeT(m_secondsSinceEpoch));
+  return base::GenerateYYMMDD(tm.tm_year, tm.tm_mon, tm.tm_mday);
+}
+
+std::string DebugPrint(Format f)
+{
+  return "v" + strings::to_string(static_cast<uint32_t>(f) + 1);
+}
+
+std::string DebugPrint(MwmVersion const & mwmVersion)
+{
+  std::stringstream s;
+  s << "MwmVersion "
+    << "{ m_format: " << DebugPrint(mwmVersion.GetFormat())
+    << ", m_secondsSinceEpoch: " << mwmVersion.GetSecondsSinceEpoch() << " }";
+  return s.str();
+}
+
+void WriteVersion(Writer & w, uint64_t secondsSinceEpoch)
+{
+  w.Write(MWM_PROLOG, ARRAY_SIZE(MWM_PROLOG));
+
+  // write inner data version
+  WriteVarUint(w, static_cast<uint32_t>(Format::lastFormat));
+  WriteVarUint(w, secondsSinceEpoch);
+}
+
+uint32_t ReadVersionDate(ModelReaderPtr const & reader)
+{
+  return MwmVersion::Read(FilesContainerR(reader)).GetVersion();
+}
+
+}  // namespace version