Zachary Anderson
74071c0738
fixes #31530 Change-Id: Ic88408b39cbba8aaac6c59356381161a2db3c2b0 Reviewed-on: https://dart-review.googlesource.com/26321 Commit-Queue: Zach Anderson <zra@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com>
112 lines
2.6 KiB
C++
112 lines
2.6 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(HOST_OS_LINUX)
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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(int* byte) {
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const int c = NO_RETRY_EXPECTED(fgetc(stdin));
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if ((c == EOF) && (ferror(stdin) != 0)) {
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return false;
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}
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*byte = (c == EOF) ? -1 : c;
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return true;
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}
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bool Stdin::GetEchoMode(bool* enabled) {
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struct termios term;
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int status = NO_RETRY_EXPECTED(tcgetattr(STDIN_FILENO, &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(bool enabled) {
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struct termios term;
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int status = NO_RETRY_EXPECTED(tcgetattr(STDIN_FILENO, &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 | ECHONL);
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} else {
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term.c_lflag &= ~(ECHO | ECHONL);
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}
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status = NO_RETRY_EXPECTED(tcsetattr(STDIN_FILENO, TCSANOW, &term));
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return (status == 0);
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}
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bool Stdin::GetLineMode(bool* enabled) {
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struct termios term;
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int status = NO_RETRY_EXPECTED(tcgetattr(STDIN_FILENO, &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(bool enabled) {
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struct termios term;
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int status = NO_RETRY_EXPECTED(tcgetattr(STDIN_FILENO, &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(STDIN_FILENO, TCSANOW, &term));
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return (status == 0);
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}
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static bool TermHasXTerm() {
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const char* term = getenv("TERM");
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if (term == NULL) {
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return false;
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}
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return strstr(term, "xterm") != NULL;
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}
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bool Stdin::AnsiSupported(bool* supported) {
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*supported = isatty(STDIN_FILENO) && TermHasXTerm();
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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) && TermHasXTerm();
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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(HOST_OS_LINUX)
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