mirror of
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b68351fbc3
TEST=build Change-Id: Ie3be570c274b0275a995a0f54b5e6ccdfc77ccd3 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/292287 Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Brian Quinlan <bquinlan@google.com>
140 lines
3.3 KiB
C++
140 lines
3.3 KiB
C++
// Copyright (c) 2013, 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(DART_HOST_OS_MACOS)
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#include "bin/stdio.h"
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#include <errno.h> // NOLINT
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#include <sys/ioctl.h> // NOLINT
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#include <termios.h> // NOLINT
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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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bool Stdin::ReadByte(intptr_t fd, int* byte) {
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unsigned char b;
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ssize_t s = TEMP_FAILURE_RETRY(read(fd, &b, 1));
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if (s < 0) {
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return false;
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}
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*byte = (s == 0) ? -1 : b;
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return true;
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}
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bool Stdin::GetEchoMode(intptr_t fd, bool* enabled) {
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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 false;
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}
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*enabled = ((term.c_lflag & ECHO) != 0);
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return true;
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}
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bool Stdin::SetEchoMode(intptr_t fd, bool enabled) {
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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 false;
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}
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if (enabled) {
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term.c_lflag |= ECHO;
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} else {
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term.c_lflag &= ~(ECHO);
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}
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status = NO_RETRY_EXPECTED(tcsetattr(fd, TCSANOW, &term));
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return (status == 0);
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}
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bool Stdin::GetEchoNewlineMode(intptr_t fd, bool* enabled) {
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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 false;
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}
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*enabled = ((term.c_lflag & ECHONL) != 0);
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return true;
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}
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bool Stdin::SetEchoNewlineMode(intptr_t fd, bool enabled) {
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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 false;
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}
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if (enabled) {
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term.c_lflag |= ECHONL;
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} else {
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term.c_lflag &= ~(ECHONL);
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}
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status = NO_RETRY_EXPECTED(tcsetattr(fd, TCSANOW, &term));
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return (status == 0);
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}
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bool Stdin::GetLineMode(intptr_t fd, bool* enabled) {
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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 false;
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}
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*enabled = ((term.c_lflag & ICANON) != 0);
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return true;
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}
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bool Stdin::SetLineMode(intptr_t fd, bool enabled) {
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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 false;
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}
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if (enabled) {
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term.c_lflag |= ICANON;
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} else {
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term.c_lflag &= ~(ICANON);
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}
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status = NO_RETRY_EXPECTED(tcsetattr(fd, TCSANOW, &term));
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return (status == 0);
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}
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static bool TermIsKnownToSupportAnsi() {
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const char* term = getenv("TERM");
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if (term == nullptr) {
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return false;
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}
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return strstr(term, "xterm") != nullptr ||
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strstr(term, "screen") != nullptr || strstr(term, "rxvt") != nullptr;
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}
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bool Stdin::AnsiSupported(intptr_t fd, bool* supported) {
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*supported = isatty(fd) && TermIsKnownToSupportAnsi();
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return true;
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}
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bool Stdout::GetTerminalSize(intptr_t fd, int size[2]) {
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struct winsize w;
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int status = NO_RETRY_EXPECTED(ioctl(fd, TIOCGWINSZ, &w));
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if ((status == 0) && ((w.ws_col != 0) || (w.ws_row != 0))) {
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size[0] = w.ws_col;
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size[1] = w.ws_row;
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return true;
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}
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return false;
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}
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bool Stdout::AnsiSupported(intptr_t fd, bool* supported) {
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*supported = isatty(fd) && TermIsKnownToSupportAnsi();
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return true;
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}
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} // namespace bin
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} // namespace dart
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#endif // defined(DART_HOST_OS_MACOS)
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