120 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <locale>10 11// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX26_REMOVED_CODECVT -D_LIBCPP_ENABLE_CXX26_REMOVED_WSTRING_CONVERT12 13// wbuffer_convert<Codecvt, Elem, Tr>14 15// int_type overflow(int_type c = traits::eof());16 17// This test is not entirely portable18 19// XFAIL: no-wide-characters20 21#include <locale>22#include <cassert>23#include <codecvt>24#include <fstream>25#include <sstream>26 27#include "test_macros.h"28 29struct test_buf30 : public std::wbuffer_convert<std::codecvt_utf8<wchar_t> >31{32 typedef std::wbuffer_convert<std::codecvt_utf8<wchar_t> > base;33 typedef base::char_type char_type;34 typedef base::int_type int_type;35 typedef base::traits_type traits_type;36 37 explicit test_buf(std::streambuf* sb) : base(sb) {}38 39 char_type* pbase() const {return base::pbase();}40 char_type* pptr() const {return base::pptr();}41 char_type* epptr() const {return base::epptr();}42 void gbump(int n) {base::gbump(n);}43 44 virtual int_type overflow(int_type c = traits_type::eof()) {return base::overflow(c);}45};46 47int main(int, char**)48{49 {50 std::string s;51 {52 std::ostringstream out;53 test_buf f(out.rdbuf());54 assert(f.pbase() == 0);55 assert(f.pptr() == 0);56 assert(f.epptr() == 0);57 assert(f.overflow(L'a') == L'a');58 assert(f.pbase() != 0);59 assert(f.pptr() == f.pbase());60 assert(f.epptr() - f.pbase() == 4095);61 s = out.str();62 }63 {64 std::istringstream in(s);65 test_buf f(in.rdbuf());66 assert(f.sgetc() == L'a');67 }68 }69 {70 std::string s;71 {72 std::ostringstream out;73 test_buf f(out.rdbuf());74 f.pubsetbuf(0, 0);75 assert(f.pbase() == 0);76 assert(f.pptr() == 0);77 assert(f.epptr() == 0);78 assert(f.overflow('a') == 'a');79 assert(f.pbase() == 0);80 assert(f.pptr() == 0);81 assert(f.epptr() == 0);82 s = out.str();83 }84 {85 std::istringstream in(s);86 test_buf f(in.rdbuf());87 assert(f.sgetc() == L'a');88 }89 }90 // TODO: Move this to std::stringstream once https://llvm.org/PR59083 has been resolved91#ifndef TEST_HAS_NO_FILESYSTEM92 {93 {94 std::ofstream bs("overflow.dat");95 test_buf f(bs.rdbuf());96 assert(f.sputc(0x4E51) == 0x4E51);97 assert(f.sputc(0x4E52) == 0x4E52);98 assert(f.sputc(0x4E53) == 0x4E53);99 }100 {101 std::ifstream f("overflow.dat");102 assert(f.is_open());103 assert(f.get() == 0xE4);104 assert(f.get() == 0xB9);105 assert(f.get() == 0x91);106 assert(f.get() == 0xE4);107 assert(f.get() == 0xB9);108 assert(f.get() == 0x92);109 assert(f.get() == 0xE4);110 assert(f.get() == 0xB9);111 assert(f.get() == 0x93);112 assert(f.get() == -1);113 }114 std::remove("overflow.dat");115 }116#endif // TEST_HAS_NO_FILESYSTEM117 118 return 0;119}120