| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| #include "platform/globals.h" |
| #if defined(DART_HOST_OS_ANDROID) |
| |
| #include "bin/stdio.h" |
| |
| #include <errno.h> // NOLINT |
| #include <sys/ioctl.h> // NOLINT |
| #include <termios.h> // NOLINT |
| |
| #include "bin/fdutils.h" |
| #include "platform/signal_blocker.h" |
| |
| namespace dart { |
| namespace bin { |
| |
| bool Stdin::ReadByte(intptr_t fd, int* byte) { |
| unsigned char b; |
| ssize_t s = TEMP_FAILURE_RETRY(read(fd, &b, 1)); |
| if (s < 0) { |
| return false; |
| } |
| *byte = (s == 0) ? -1 : b; |
| return true; |
| } |
| |
| bool Stdin::GetEchoMode(intptr_t fd, bool* enabled) { |
| struct termios term; |
| int status = NO_RETRY_EXPECTED(tcgetattr(fd, &term)); |
| if (status != 0) { |
| return false; |
| } |
| *enabled = ((term.c_lflag & ECHO) != 0); |
| return true; |
| } |
| |
| bool Stdin::SetEchoMode(intptr_t fd, bool enabled) { |
| struct termios term; |
| int status = NO_RETRY_EXPECTED(tcgetattr(fd, &term)); |
| if (status != 0) { |
| return false; |
| } |
| if (enabled) { |
| term.c_lflag |= (ECHO | ECHONL); |
| } else { |
| term.c_lflag &= ~(ECHO | ECHONL); |
| } |
| status = NO_RETRY_EXPECTED(tcsetattr(fd, TCSANOW, &term)); |
| return (status == 0); |
| } |
| |
| bool Stdin::GetLineMode(intptr_t fd, bool* enabled) { |
| struct termios term; |
| int status = NO_RETRY_EXPECTED(tcgetattr(fd, &term)); |
| if (status != 0) { |
| return false; |
| } |
| *enabled = ((term.c_lflag & ICANON) != 0); |
| return true; |
| } |
| |
| bool Stdin::SetLineMode(intptr_t fd, bool enabled) { |
| struct termios term; |
| int status = NO_RETRY_EXPECTED(tcgetattr(fd, &term)); |
| if (status != 0) { |
| return false; |
| } |
| if (enabled) { |
| term.c_lflag |= ICANON; |
| } else { |
| term.c_lflag &= ~(ICANON); |
| } |
| status = NO_RETRY_EXPECTED(tcsetattr(fd, TCSANOW, &term)); |
| return (status == 0); |
| } |
| |
| static bool TermIsKnownToSupportAnsi() { |
| const char* term = getenv("TERM"); |
| if (term == NULL) { |
| return false; |
| } |
| |
| return strstr(term, "xterm") != NULL || strstr(term, "screen") != NULL || |
| strstr(term, "rxvt") != NULL; |
| } |
| |
| bool Stdin::AnsiSupported(intptr_t fd, bool* supported) { |
| *supported = isatty(fd) && TermIsKnownToSupportAnsi(); |
| return true; |
| } |
| |
| bool Stdout::GetTerminalSize(intptr_t fd, int size[2]) { |
| struct winsize w; |
| int status = NO_RETRY_EXPECTED(ioctl(fd, TIOCGWINSZ, &w)); |
| if ((status == 0) && ((w.ws_col != 0) || (w.ws_row != 0))) { |
| size[0] = w.ws_col; |
| size[1] = w.ws_row; |
| return true; |
| } |
| return false; |
| } |
| |
| bool Stdout::AnsiSupported(intptr_t fd, bool* supported) { |
| *supported = isatty(fd) && TermIsKnownToSupportAnsi(); |
| return true; |
| } |
| |
| } // namespace bin |
| } // namespace dart |
| |
| #endif // defined(DART_HOST_OS_ANDROID) |