Method UnzipFile

libs/coding/zip_reader.cpp:106–138

static

// static
void ZipFileReader::UnzipFile(std::string const & zipContainer, std::string const & fileInZip, Delegate & delegate)
{
  auto zip = unzip::Open(zipContainer);
  if (!zip)
    MYTHROW(OpenZipException, ("Can't get zip file handle", zipContainer));
  SCOPE_GUARD(zipGuard, std::bind(&unzip::Close, zip));

  if (unzip::Code::Ok != unzip::GoToFile(zip, fileInZip))
    MYTHROW(LocateZipException, ("Can't locate file inside zip", fileInZip));

  if (unzip::Code::Ok != unzip::OpenCurrentFile(zip))
    MYTHROW(LocateZipException, ("Can't open file inside zip", fileInZip));
  SCOPE_GUARD(currentFileGuard, std::bind(&unzip::CloseCurrentFile, zip));

  unzip::FileInfo fileInfo;
  if (unzip::Code::Ok != unzip::GetCurrentFileInfo(zip, fileInfo))
    MYTHROW(LocateZipException, ("Can't get uncompressed file size inside zip", fileInZip));

  std::array<char, unzip::kFileBufferSize> buf;
  int readBytes = 0;

  delegate.OnStarted();
  do
  {
    readBytes = unzip::ReadCurrentFile(zip, buf);
    if (readBytes < 0)
      MYTHROW(InvalidZipException, ("Error", readBytes, "while unzipping", fileInZip, "from", zipContainer));

    delegate.OnBlockUnzipped(static_cast<size_t>(readBytes), buf.data());
  }
  while (readBytes != 0);
  delegate.OnCompleted();
}

// static
void ZipFileReader::UnzipFile(std::string const & zipContainer, std::string const & fileInZip,