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Diffstat (limited to 'lldb/source/Host/common/Terminal.cpp')
| -rw-r--r-- | lldb/source/Host/common/Terminal.cpp | 299 |
1 files changed, 0 insertions, 299 deletions
diff --git a/lldb/source/Host/common/Terminal.cpp b/lldb/source/Host/common/Terminal.cpp deleted file mode 100644 index 61cedb7b298e..000000000000 --- a/lldb/source/Host/common/Terminal.cpp +++ /dev/null @@ -1,299 +0,0 @@ -//===-- Terminal.cpp --------------------------------------------*- C++ -*-===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// - -#include "lldb/Host/Terminal.h" -#include "lldb/Host/Config.h" - -#include <fcntl.h> -#include <unistd.h> -#include <signal.h> - -#ifdef LLDB_CONFIG_TERMIOS_SUPPORTED -#include <termios.h> -#endif - - -using namespace lldb_private; - -bool -Terminal::IsATerminal () const -{ - return m_fd >= 0 && ::isatty (m_fd); -} - - -bool -Terminal::SetEcho (bool enabled) -{ - if (FileDescriptorIsValid()) - { -#ifdef LLDB_CONFIG_TERMIOS_SUPPORTED - if (IsATerminal ()) - { - struct termios fd_termios; - if (::tcgetattr(m_fd, &fd_termios) == 0) - { - bool set_corectly = false; - if (enabled) - { - if (fd_termios.c_lflag & ECHO) - set_corectly = true; - else - fd_termios.c_lflag |= ECHO; - } - else - { - if (fd_termios.c_lflag & ECHO) - fd_termios.c_lflag &= ~ECHO; - else - set_corectly = true; - } - - if (set_corectly) - return true; - return ::tcsetattr (m_fd, TCSANOW, &fd_termios) == 0; - } - } -#endif // #ifdef LLDB_CONFIG_TERMIOS_SUPPORTED - } - return false; -} - -bool -Terminal::SetCanonical (bool enabled) -{ - if (FileDescriptorIsValid()) - { -#ifdef LLDB_CONFIG_TERMIOS_SUPPORTED - if (IsATerminal ()) - { - struct termios fd_termios; - if (::tcgetattr(m_fd, &fd_termios) == 0) - { - bool set_corectly = false; - if (enabled) - { - if (fd_termios.c_lflag & ICANON) - set_corectly = true; - else - fd_termios.c_lflag |= ICANON; - } - else - { - if (fd_termios.c_lflag & ICANON) - fd_termios.c_lflag &= ~ICANON; - else - set_corectly = true; - } - - if (set_corectly) - return true; - return ::tcsetattr (m_fd, TCSANOW, &fd_termios) == 0; - } - } -#endif // #ifdef LLDB_CONFIG_TERMIOS_SUPPORTED - } - return false; -} - -//---------------------------------------------------------------------- -// Default constructor -//---------------------------------------------------------------------- -TerminalState::TerminalState() : - m_tty(), - m_tflags(-1), - m_termios_ap(), - m_process_group(-1) -{ -} - -//---------------------------------------------------------------------- -// Destructor -//---------------------------------------------------------------------- -TerminalState::~TerminalState() -{ -} - -//---------------------------------------------------------------------- -// Save the current state of the TTY for the file descriptor "fd" -// and if "save_process_group" is true, attempt to save the process -// group info for the TTY. -//---------------------------------------------------------------------- -bool -TerminalState::Save (int fd, bool save_process_group) -{ - m_tty.SetFileDescriptor(fd); - if (m_tty.IsATerminal()) - { - m_tflags = ::fcntl (fd, F_GETFL, 0); -#ifdef LLDB_CONFIG_TERMIOS_SUPPORTED - if (m_termios_ap.get() == NULL) - m_termios_ap.reset (new struct termios); - int err = ::tcgetattr (fd, m_termios_ap.get()); - if (err != 0) - m_termios_ap.reset(); -#endif // #ifdef LLDB_CONFIG_TERMIOS_SUPPORTED - if (save_process_group) - m_process_group = ::tcgetpgrp (0); - else - m_process_group = -1; - } - else - { - m_tty.Clear(); - m_tflags = -1; - m_termios_ap.reset(); - m_process_group = -1; - } - return IsValid(); -} - -//---------------------------------------------------------------------- -// Restore the state of the TTY using the cached values from a -// previous call to Save(). -//---------------------------------------------------------------------- -bool -TerminalState::Restore () const -{ - int result = 0; - if (IsValid()) - { - const int fd = m_tty.GetFileDescriptor(); - if (TFlagsIsValid()) - result = fcntl (fd, F_SETFL, m_tflags); - -#ifdef LLDB_CONFIG_TERMIOS_SUPPORTED - if (TTYStateIsValid()) - result = tcsetattr (fd, TCSANOW, m_termios_ap.get()); -#endif // #ifdef LLDB_CONFIG_TERMIOS_SUPPORTED - - if (ProcessGroupIsValid()) - { - // Save the original signal handler. - void (*saved_sigttou_callback) (int) = NULL; - saved_sigttou_callback = (void (*)(int)) signal (SIGTTOU, SIG_IGN); - // Set the process group - result = tcsetpgrp (fd, m_process_group); - // Restore the original signal handler. - signal (SIGTTOU, saved_sigttou_callback); - } - return true; - } - return false; -} - - - - -//---------------------------------------------------------------------- -// Returns true if this object has valid saved TTY state settings -// that can be used to restore a previous state. -//---------------------------------------------------------------------- -bool -TerminalState::IsValid() const -{ - return m_tty.FileDescriptorIsValid () && (TFlagsIsValid() || TTYStateIsValid()); -} - -//---------------------------------------------------------------------- -// Returns true if m_tflags is valid -//---------------------------------------------------------------------- -bool -TerminalState::TFlagsIsValid() const -{ - return m_tflags != -1; -} - -//---------------------------------------------------------------------- -// Returns true if m_ttystate is valid -//---------------------------------------------------------------------- -bool -TerminalState::TTYStateIsValid() const -{ - return m_termios_ap.get() != 0; -} - -//---------------------------------------------------------------------- -// Returns true if m_process_group is valid -//---------------------------------------------------------------------- -bool -TerminalState::ProcessGroupIsValid() const -{ - return m_process_group != -1; -} - -//------------------------------------------------------------------ -// Constructor -//------------------------------------------------------------------ -TerminalStateSwitcher::TerminalStateSwitcher () : - m_currentState(UINT32_MAX) -{ -} - -//------------------------------------------------------------------ -// Destructor -//------------------------------------------------------------------ -TerminalStateSwitcher::~TerminalStateSwitcher () -{ -} - -//------------------------------------------------------------------ -// Returns the number of states that this switcher contains -//------------------------------------------------------------------ -uint32_t -TerminalStateSwitcher::GetNumberOfStates() const -{ - return sizeof(m_ttystates)/sizeof(TerminalState); -} - -//------------------------------------------------------------------ -// Restore the state at index "idx". -// -// Returns true if the restore was successful, false otherwise. -//------------------------------------------------------------------ -bool -TerminalStateSwitcher::Restore (uint32_t idx) const -{ - const uint32_t num_states = GetNumberOfStates(); - if (idx >= num_states) - return false; - - // See if we already are in this state? - if (m_currentState < num_states && (idx == m_currentState) && m_ttystates[idx].IsValid()) - return true; - - // Set the state to match the index passed in and only update the - // current state if there are no errors. - if (m_ttystates[idx].Restore()) - { - m_currentState = idx; - return true; - } - - // We failed to set the state. The tty state was invalid or not - // initialized. - return false; -} - -//------------------------------------------------------------------ -// Save the state at index "idx" for file descriptor "fd" and -// save the process group if requested. -// -// Returns true if the restore was successful, false otherwise. -//------------------------------------------------------------------ -bool -TerminalStateSwitcher::Save (uint32_t idx, int fd, bool save_process_group) -{ - const uint32_t num_states = GetNumberOfStates(); - if (idx < num_states) - return m_ttystates[idx].Save(fd, save_process_group); - return false; -} - - |