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 // <fstream> 11 12 // basic_filebuf<charT,traits>* open(const char* s, ios_base::openmode mode); 13 14 #include <fstream> 15 #include <cassert> 16 17 int main() 18 { 19 char temp[L_tmpnam]; 20 tmpnam(temp); 21 { 22 std::filebuf f; 23 assert(f.open(temp, std::ios_base::out) != 0); 24 assert(f.is_open()); 25 assert(f.sputn("123", 3) == 3); 26 } 27 { 28 std::filebuf f; 29 assert(f.open(temp, std::ios_base::in) != 0); 30 assert(f.is_open()); 31 assert(f.sbumpc() == '1'); 32 assert(f.sbumpc() == '2'); 33 assert(f.sbumpc() == '3'); 34 } 35 remove(temp); 36 { 37 std::wfilebuf f; 38 assert(f.open(temp, std::ios_base::out) != 0); 39 assert(f.is_open()); 40 assert(f.sputn(L"123", 3) == 3); 41 } 42 { 43 std::wfilebuf f; 44 assert(f.open(temp, std::ios_base::in) != 0); 45 assert(f.is_open()); 46 assert(f.sbumpc() == L'1'); 47 assert(f.sbumpc() == L'2'); 48 assert(f.sbumpc() == L'3'); 49 } 50 remove(temp); 51 } 52
