Ben Konyi
3c8d3b6870
Change-Id: Ic7cbc690f490e0127387d9a23866ea7eddbc84cf Reviewed-on: https://dart-review.googlesource.com/45746 Commit-Queue: Ben Konyi <bkonyi@google.com> Reviewed-by: Zach Anderson <zra@google.com>
93 lines
2.5 KiB
C++
93 lines
2.5 KiB
C++
// Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "platform/globals.h"
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#if defined(HOST_OS_LINUX) || defined(HOST_OS_MACOS) || \
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defined(HOST_OS_ANDROID) || defined(HOST_OS_FUCHSIA)
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#include "bin/console.h"
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#include <errno.h>
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#include <sys/ioctl.h>
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#include <termios.h>
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#include "bin/fdutils.h"
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#include "platform/signal_blocker.h"
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namespace dart {
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namespace bin {
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class PosixConsole {
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public:
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static const tcflag_t kInvalidFlag = -1;
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static void Initialize() {
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SaveMode(STDOUT_FILENO, &stdout_initial_c_lflag_);
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SaveMode(STDERR_FILENO, &stderr_initial_c_lflag_);
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SaveMode(STDIN_FILENO, &stdin_initial_c_lflag_);
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}
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static void Cleanup() {
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RestoreMode(STDOUT_FILENO, stdout_initial_c_lflag_);
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RestoreMode(STDERR_FILENO, stderr_initial_c_lflag_);
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RestoreMode(STDIN_FILENO, stdin_initial_c_lflag_);
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ClearLFlags();
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}
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private:
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static tcflag_t stdout_initial_c_lflag_;
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static tcflag_t stderr_initial_c_lflag_;
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static tcflag_t stdin_initial_c_lflag_;
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static void ClearLFlags() {
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stdout_initial_c_lflag_ = kInvalidFlag;
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stderr_initial_c_lflag_ = kInvalidFlag;
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stdin_initial_c_lflag_ = kInvalidFlag;
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}
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static void SaveMode(intptr_t fd, tcflag_t* flag) {
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ASSERT(flag != NULL);
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struct termios term;
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int status = NO_RETRY_EXPECTED(tcgetattr(fd, &term));
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if (status != 0) {
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return;
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}
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*flag = term.c_lflag;
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}
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static void RestoreMode(intptr_t fd, tcflag_t flag) {
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if (flag == kInvalidFlag) {
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return;
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}
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struct termios term;
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int status = NO_RETRY_EXPECTED(tcgetattr(fd, &term));
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if (status != 0) {
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return;
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}
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term.c_lflag = flag;
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NO_RETRY_EXPECTED(tcsetattr(fd, TCSANOW, &term));
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}
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DISALLOW_ALLOCATION();
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DISALLOW_IMPLICIT_CONSTRUCTORS(PosixConsole);
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};
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tcflag_t PosixConsole::stdout_initial_c_lflag_ = PosixConsole::kInvalidFlag;
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tcflag_t PosixConsole::stderr_initial_c_lflag_ = PosixConsole::kInvalidFlag;
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tcflag_t PosixConsole::stdin_initial_c_lflag_ = PosixConsole::kInvalidFlag;
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void Console::SaveConfig() {
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PosixConsole::Initialize();
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}
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void Console::RestoreConfig() {
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PosixConsole::Cleanup();
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}
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} // namespace bin
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} // namespace dart
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#endif // defined(HOST_OS_LINUX) || defined(HOST_OS_MACOS) || \
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// defined(HOST_OS_ANDROID) || defined(HOST_OS_FUCHSIA)
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