f4c1258d56
Some embedded platforms do not wish to support the C library functionality for handling wchar_t because they have no use for it. It makes sense for libc++ to work properly on those platforms, so this commit adds a carve-out of functionality for wchar_t. Unfortunately, unlike some other carve-outs (e.g. random device), this patch touches several parts of the library. However, despite the wide impact of this patch, I still think it is important to support this configuration since it makes it much simpler to port libc++ to some embedded platforms. Differential Revision: https://reviews.llvm.org/D111265
81 lines
2.2 KiB
C++
81 lines
2.2 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// REQUIRES: locale.en_US.UTF-8
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// <iomanip>
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// template <class charT> T9 get_time(struct tm* tmb, const charT* fmt);
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#include <iomanip>
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#include <istream>
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#include <cassert>
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#include "test_macros.h"
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#include "platform_support.h" // locale name macros
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template <class CharT>
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struct testbuf
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: public std::basic_streambuf<CharT>
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{
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typedef std::basic_string<CharT> string_type;
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typedef std::basic_streambuf<CharT> base;
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private:
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string_type str_;
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public:
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testbuf() {}
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testbuf(const string_type& str)
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: str_(str)
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{
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base::setg(const_cast<CharT*>(str_.data()),
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const_cast<CharT*>(str_.data()),
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const_cast<CharT*>(str_.data()) + str_.size());
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}
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};
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int main(int, char**)
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{
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{
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testbuf<char> sb(" Sat Dec 31 23:55:59 2061");
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std::istream is(&sb);
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is.imbue(std::locale(LOCALE_en_US_UTF_8));
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std::tm t = {};
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is >> std::get_time(&t, "%a %b %d %H:%M:%S %Y");
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assert(t.tm_sec == 59);
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assert(t.tm_min == 55);
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assert(t.tm_hour == 23);
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assert(t.tm_mday == 31);
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assert(t.tm_mon == 11);
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assert(t.tm_year == 161);
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assert(t.tm_wday == 6);
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assert(is.eof());
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assert(!is.fail());
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}
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#ifndef TEST_HAS_NO_WIDE_CHARACTERS
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{
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testbuf<wchar_t> sb(L" Sat Dec 31 23:55:59 2061");
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std::wistream is(&sb);
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is.imbue(std::locale(LOCALE_en_US_UTF_8));
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std::tm t = {};
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is >> std::get_time(&t, L"%a %b %d %H:%M:%S %Y");
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assert(t.tm_sec == 59);
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assert(t.tm_min == 55);
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assert(t.tm_hour == 23);
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assert(t.tm_mday == 31);
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assert(t.tm_mon == 11);
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assert(t.tm_year == 161);
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assert(t.tm_wday == 6);
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assert(is.eof());
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assert(!is.fail());
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}
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#endif
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return 0;
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}
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