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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <fstream>
// basic_filebuf<charT,traits>* open(const char* s, ios_base::openmode mode);
// XFAIL: LIBCXX-AIX-FIXME
#include <fstream>
#include <cassert>
#include "test_macros.h"
#include "platform_support.h"
int main(int, char**)
{
std::string temp = get_temp_file_name();
{
std::filebuf f;
assert(f.open(temp.c_str(), std::ios_base::out) != 0);
assert(f.is_open());
assert(f.sputn("123", 3) == 3);
}
{
std::filebuf f;
assert(f.open(temp.c_str(), std::ios_base::in) != 0);
assert(f.is_open());
assert(f.sbumpc() == '1');
assert(f.sbumpc() == '2');
assert(f.sbumpc() == '3');
}
std::remove(temp.c_str());
#ifndef TEST_HAS_NO_WIDE_CHARACTERS
{
std::wfilebuf f;
assert(f.open(temp.c_str(), std::ios_base::out) != 0);
assert(f.is_open());
assert(f.sputn(L"123", 3) == 3);
}
{
std::wfilebuf f;
assert(f.open(temp.c_str(), std::ios_base::in) != 0);
assert(f.is_open());
assert(f.sbumpc() == L'1');
assert(f.sbumpc() == L'2');
assert(f.sbumpc() == L'3');
}
std::remove(temp.c_str());
#endif
#if TEST_STD_VER >= 23
// Test all the noreplace flag combinations
{
std::ios_base::openmode modes[] = {
std::ios_base::out | std::ios_base::noreplace,
std::ios_base::out | std::ios_base::trunc | std::ios_base::noreplace,
std::ios_base::in | std::ios_base::out | std::ios_base::trunc | std::ios_base::noreplace,
std::ios_base::out | std::ios_base::noreplace | std::ios_base::binary,
std::ios_base::out | std::ios_base::trunc | std::ios_base::noreplace | std::ios_base::binary,
std::ios_base::in | std::ios_base::out | std::ios_base::trunc | std::ios_base::noreplace |
std::ios_base::binary,
};
for (auto mode : modes) {
std::string tmp = get_temp_file_name(); // also creates the file
{
std::filebuf f;
f.open(tmp.c_str(), mode);
assert(!f.is_open()); // since it already exists
}
{
std::remove(tmp.c_str());
std::filebuf f;
f.open(tmp.c_str(), mode);
assert(f.is_open()); // since it doesn't exist
}
}
# ifndef TEST_HAS_NO_WIDE_CHARACTERS
for (auto mode : modes) {
std::string tmp = get_temp_file_name(); // also creates the file
{
std::wfilebuf f;
f.open(tmp.c_str(), mode);
assert(!f.is_open()); // since it already exists
}
{
std::remove(tmp.c_str());
std::wfilebuf f;
f.open(tmp.c_str(), mode);
assert(f.is_open()); // since it doesn't exist
}
}
# endif
}
#endif // TEST_STD_VER >= 23
return 0;
}
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