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9847cab8d3
This adjusts the Windows console to switch the codepage to UTF-8. This is important as the default codepage (CP437) does not allow for UTF-8 output, but expects ASCII. However, strings in Swift are assumed to be UTF-8, which means that there is now a conversion mismatch. Because the console mode persists beyond the duration of the application as it is state local to the console and not the C runtime, we should restore the state of the console before termination. We do this by registering a termination handler via `atexit`. This means that an abnormal termination (e.g. via `fatalError`) will irrevocably alter the state of the console (interestingly enough, `chcp` will still report the original console codepage even though the console will internally be set to UTF-8). Fixes: SR-13807
78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
//===--- LibcShims.cpp ----------------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2018 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#if defined(__APPLE__)
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#define _REENTRANT
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#include <math.h>
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#endif
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#if defined(_WIN32) && !defined(__CYGWIN__)
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#include <io.h>
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#define WIN32_LEAN_AND_MEAN
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#include <Windows.h>
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#endif
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#include <stdio.h>
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#include <sys/types.h>
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#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)) || defined(__wasi__)
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#include <unistd.h>
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#endif
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#include <type_traits>
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#include "../SwiftShims/LibcShims.h"
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#if defined(_WIN32)
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static void __attribute__((__constructor__))
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_swift_stdlib_configure_console_mode(void) {
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static UINT uiPrevConsoleCP = GetConsoleOutputCP();
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atexit([]() { SetConsoleOutputCP(uiPrevConsoleCP); });
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SetConsoleOutputCP(CP_UTF8);
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}
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#endif
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SWIFT_RUNTIME_STDLIB_INTERNAL
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__swift_size_t _swift_stdlib_fwrite_stdout(const void *ptr,
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__swift_size_t size,
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__swift_size_t nitems) {
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return fwrite(ptr, size, nitems, stdout);
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}
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SWIFT_RUNTIME_STDLIB_SPI
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__swift_ssize_t
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_swift_stdlib_read(int fd, void *buf, __swift_size_t nbyte) {
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#if defined(_WIN32)
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return _read(fd, buf, nbyte);
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#else
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return read(fd, buf, nbyte);
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#endif
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}
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SWIFT_RUNTIME_STDLIB_SPI
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__swift_ssize_t
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_swift_stdlib_write(int fd, const void *buf, __swift_size_t nbyte) {
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#if defined(_WIN32)
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return _write(fd, buf, nbyte);
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#else
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return write(fd, buf, nbyte);
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#endif
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}
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SWIFT_RUNTIME_STDLIB_SPI
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int _swift_stdlib_close(int fd) {
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#if defined(_WIN32)
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return _close(fd);
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#else
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return close(fd);
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#endif
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}
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