string_file.hpp 2.4 KB

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  1. // filesystem/string_file.hpp --------------------------------------------------------//
  2. // Copyright Beman Dawes 2015
  3. // Distributed under the Boost Software License, Version 1.0.
  4. // See http://www.boost.org/LICENSE_1_0.txt
  5. // Library home page: http://www.boost.org/libs/filesystem
  6. #ifndef BOOST_FILESYSTEM_STRING_FILE_HPP
  7. #define BOOST_FILESYSTEM_STRING_FILE_HPP
  8. #include <boost/filesystem/config.hpp>
  9. #if !defined(BOOST_FILESYSTEM_DEPRECATED) && !defined(BOOST_FILESYSTEM_ALLOW_DEPRECATED)
  10. #include <boost/config/header_deprecated.hpp>
  11. BOOST_HEADER_DEPRECATED("your own implementation")
  12. #endif
  13. #if !defined(BOOST_FILESYSTEM_NO_DEPRECATED)
  14. #include <cstddef>
  15. #include <limits>
  16. #include <string>
  17. #include <ios>
  18. #include <stdexcept>
  19. #include <boost/cstdint.hpp>
  20. #include <boost/filesystem/path.hpp>
  21. #include <boost/filesystem/fstream.hpp>
  22. #include <boost/filesystem/operations.hpp>
  23. #include <boost/filesystem/detail/header.hpp> // must be the last #include
  24. namespace boost {
  25. namespace filesystem {
  26. BOOST_FILESYSTEM_DETAIL_DEPRECATED("Use file IO streams instead")
  27. inline void save_string_file(path const& p, std::string const& str)
  28. {
  29. filesystem::ofstream file;
  30. file.exceptions(std::ios_base::failbit | std::ios_base::badbit);
  31. file.open(p, std::ios_base::binary);
  32. const std::size_t sz = str.size();
  33. if (BOOST_UNLIKELY(sz > static_cast< boost::uintmax_t >((std::numeric_limits< std::streamsize >::max)())))
  34. BOOST_FILESYSTEM_THROW(std::length_error("String size exceeds max write size"));
  35. file.write(str.c_str(), static_cast< std::streamsize >(sz));
  36. }
  37. BOOST_FILESYSTEM_DETAIL_DEPRECATED("Use file IO streams instead")
  38. inline void load_string_file(path const& p, std::string& str)
  39. {
  40. filesystem::ifstream file;
  41. file.exceptions(std::ios_base::failbit | std::ios_base::badbit);
  42. file.open(p, std::ios_base::binary);
  43. const boost::uintmax_t sz = filesystem::file_size(p);
  44. if (BOOST_UNLIKELY(sz > static_cast< boost::uintmax_t >((std::numeric_limits< std::streamsize >::max)())))
  45. BOOST_FILESYSTEM_THROW(std::length_error("File size exceeds max read size"));
  46. str.resize(static_cast< std::size_t >(sz), '\0');
  47. if (sz > 0u)
  48. file.read(&str[0], static_cast< std::streamsize >(sz));
  49. }
  50. } // namespace filesystem
  51. } // namespace boost
  52. #include <boost/filesystem/detail/footer.hpp>
  53. #endif // !defined(BOOST_FILESYSTEM_NO_DEPRECATED)
  54. #endif // BOOST_FILESYSTEM_STRING_FILE_HPP