1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <locale> 11 12 // wbuffer_convert<Codecvt, Elem, Tr> 13 14 // int_type overflow(int_type c = traits::eof()); 15 16 // This test is not entirely portable 17 18 #include <locale> 19 #include <codecvt> 20 #include <fstream> 21 #include <cassert> 22 23 struct test_buf 24 : public std::wbuffer_convert<std::codecvt_utf8<wchar_t> > 25 { 26 typedef std::wbuffer_convert<std::codecvt_utf8<wchar_t> > base; 27 typedef base::char_type char_type; 28 typedef base::int_type int_type; 29 typedef base::traits_type traits_type; 30 31 explicit test_buf(std::streambuf* sb) : base(sb) {} 32 33 char_type* pbase() const {return base::pbase();} 34 char_type* pptr() const {return base::pptr();} 35 char_type* epptr() const {return base::epptr();} 36 void gbump(int n) {base::gbump(n);} 37 38 virtual int_type overflow(int_type c = traits_type::eof()) {return base::overflow(c);} 39 }; 40 41 int main() 42 { 43 { 44 std::ofstream bs("overflow.dat"); 45 test_buf f(bs.rdbuf()); 46 assert(f.pbase() == 0); 47 assert(f.pptr() == 0); 48 assert(f.epptr() == 0); 49 assert(f.overflow(L'a') == L'a'); 50 assert(f.pbase() != 0); 51 assert(f.pptr() == f.pbase()); 52 assert(f.epptr() - f.pbase() == 4095); 53 } 54 { 55 std::ifstream bs("overflow.dat"); 56 test_buf f(bs.rdbuf()); 57 assert(f.sgetc() == L'a'); 58 } 59 std::remove("overflow.dat"); 60 { 61 std::ofstream bs("overflow.dat"); 62 test_buf f(bs.rdbuf()); 63 f.pubsetbuf(0, 0); 64 assert(f.pbase() == 0); 65 assert(f.pptr() == 0); 66 assert(f.epptr() == 0); 67 assert(f.overflow('a') == 'a'); 68 assert(f.pbase() == 0); 69 assert(f.pptr() == 0); 70 assert(f.epptr() == 0); 71 } 72 { 73 std::ifstream bs("overflow.dat"); 74 test_buf f(bs.rdbuf()); 75 assert(f.sgetc() == L'a'); 76 } 77 std::remove("overflow.dat"); 78 { 79 std::ofstream bs("overflow.dat"); 80 test_buf f(bs.rdbuf()); 81 assert(f.sputc(0x4E51) == 0x4E51); 82 assert(f.sputc(0x4E52) == 0x4E52); 83 assert(f.sputc(0x4E53) == 0x4E53); 84 } 85 { 86 std::ifstream f("overflow.dat"); 87 assert(f.is_open()); 88 assert(f.get() == 0xE4); 89 assert(f.get() == 0xB9); 90 assert(f.get() == 0x91); 91 assert(f.get() == 0xE4); 92 assert(f.get() == 0xB9); 93 assert(f.get() == 0x92); 94 assert(f.get() == 0xE4); 95 assert(f.get() == 0xB9); 96 assert(f.get() == 0x93); 97 assert(f.get() == -1); 98 } 99 std::remove("overflow.dat"); 100 } 101
