| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // XFAIL: with_system_cxx_lib=macosx10.13 |
| // XFAIL: with_system_cxx_lib=macosx10.12 |
| // XFAIL: with_system_cxx_lib=macosx10.11 |
| // XFAIL: with_system_cxx_lib=macosx10.10 |
| // XFAIL: with_system_cxx_lib=macosx10.9 |
| // XFAIL: with_system_cxx_lib=macosx10.8 |
| // XFAIL: with_system_cxx_lib=macosx10.7 |
| |
| // <istream> |
| |
| // basic_istream<charT,traits>& getline(char_type* s, streamsize n); |
| |
| #include <istream> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| template <class CharT> |
| struct testbuf |
| : public std::basic_streambuf<CharT> |
| { |
| typedef std::basic_string<CharT> string_type; |
| typedef std::basic_streambuf<CharT> base; |
| private: |
| string_type str_; |
| public: |
| |
| testbuf() {} |
| testbuf(const string_type& str) |
| : str_(str) |
| { |
| base::setg(const_cast<CharT*>(str_.data()), |
| const_cast<CharT*>(str_.data()), |
| const_cast<CharT*>(str_.data()) + str_.size()); |
| } |
| |
| CharT* eback() const {return base::eback();} |
| CharT* gptr() const {return base::gptr();} |
| CharT* egptr() const {return base::egptr();} |
| }; |
| |
| int main() |
| { |
| { |
| testbuf<char> sb(" \n \n "); |
| std::istream is(&sb); |
| char s[5]; |
| is.getline(s, 5); |
| assert(!is.eof()); |
| assert(!is.fail()); |
| assert(std::string(s) == " "); |
| assert(is.gcount() == 3); |
| is.getline(s, 5); |
| assert(!is.eof()); |
| assert(!is.fail()); |
| assert(std::string(s) == " "); |
| assert(is.gcount() == 5); |
| is.getline(s, 5); |
| assert( is.eof()); |
| assert(!is.fail()); |
| assert(std::string(s) == " "); |
| assert(is.gcount() == 1); |
| // Check that even in error case the buffer is properly 0-terminated. |
| is.getline(s, 5); |
| assert( is.eof()); |
| assert( is.fail()); |
| assert(std::string(s) == ""); |
| assert(is.gcount() == 0); |
| } |
| #ifndef TEST_HAS_NO_EXCEPTIONS |
| { |
| testbuf<char> sb(" "); |
| std::istream is(&sb); |
| char s[5] = "test"; |
| is.exceptions(std::istream::eofbit | std::istream::badbit); |
| try |
| { |
| is.getline(s, 5); |
| assert(false); |
| } |
| catch (std::ios_base::failure&) |
| { |
| } |
| assert( is.eof()); |
| assert( is.fail()); |
| assert(std::string(s) == " "); |
| assert(is.gcount() == 1); |
| } |
| #endif |
| { |
| testbuf<wchar_t> sb(L" \n \n "); |
| std::wistream is(&sb); |
| wchar_t s[5]; |
| is.getline(s, 5); |
| assert(!is.eof()); |
| assert(!is.fail()); |
| assert(std::wstring(s) == L" "); |
| assert(is.gcount() == 3); |
| is.getline(s, 5); |
| assert(!is.eof()); |
| assert(!is.fail()); |
| assert(std::wstring(s) == L" "); |
| assert(is.gcount() == 5); |
| is.getline(s, 5); |
| assert( is.eof()); |
| assert(!is.fail()); |
| assert(std::wstring(s) == L" "); |
| assert(is.gcount() == 1); |
| // Check that even in error case the buffer is properly 0-terminated. |
| is.getline(s, 5); |
| assert( is.eof()); |
| assert( is.fail()); |
| assert(std::wstring(s) == L""); |
| assert(is.gcount() == 0); |
| } |
| #ifndef TEST_HAS_NO_EXCEPTIONS |
| { |
| testbuf<wchar_t> sb(L" "); |
| std::wistream is(&sb); |
| wchar_t s[5] = L"test"; |
| is.exceptions(std::wistream::eofbit | std::wistream::badbit); |
| try |
| { |
| is.getline(s, 5); |
| assert(false); |
| } |
| catch (std::ios_base::failure&) |
| { |
| } |
| assert( is.eof()); |
| assert( is.fail()); |
| assert(std::wstring(s) == L" "); |
| assert(is.gcount() == 1); |
| } |
| #endif |
| } |