346 lines
8.1 KiB
C++
346 lines
8.1 KiB
C++
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#include "il2cpp-config.h"
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#if IL2CPP_TARGET_POSIX && !IL2CPP_USE_PLATFORM_SPECIFIC_CONSOLE
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#include "os/Console.h"
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#include "os/File.h"
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#include <stdlib.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdio.h>
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#include <termios.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <sys/types.h>
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namespace il2cpp
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{
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namespace os
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{
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namespace Console
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{
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#if !RUNTIME_TINY
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static bool setupComplete = false;
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static int32_t s_terminalSize;
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static struct termios s_initialAttr;
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static struct termios s_il2cppAttr;
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static std::string s_keypadXmit;
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static std::string s_teardown;
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static struct sigaction s_saveSigcont, s_saveSigint, s_saveSigwinch;
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static int32_t GetTerminalSize()
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{
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struct winsize ws;
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if (ioctl(STDIN_FILENO, TIOCGWINSZ, &ws) == 0)
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return (ws.ws_col << 16) | ws.ws_row;
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return -1;
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}
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static bool SetProperty(int32_t property, bool value)
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{
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struct termios attr;
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bool callset = false;
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bool check;
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if (tcgetattr(STDIN_FILENO, &attr) == -1)
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return false;
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check = (attr.c_lflag & property) != 0;
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if ((value || check) && !(value && check))
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{
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callset = true;
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if (value)
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attr.c_lflag |= property;
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else
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attr.c_lflag &= ~property;
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}
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if (!callset)
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return true;
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if (tcsetattr(STDIN_FILENO, TCSANOW, &attr) == -1)
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return true;
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s_il2cppAttr = attr;
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return true;
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}
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static void SetControlChars(uint8_t* control_chars, const uint8_t *cc)
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{
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// The index into the array comes from corlib/System/ControlCharacters.cs
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#ifdef VINTR
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control_chars[0] = cc[VINTR];
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#endif
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#ifdef VQUIT
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control_chars[1] = cc[VQUIT];
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#endif
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#ifdef VERASE
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control_chars[2] = cc[VERASE];
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#endif
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#ifdef VKILL
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control_chars[3] = cc[VKILL];
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#endif
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#ifdef VEOF
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control_chars[4] = cc[VEOF];
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#endif
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#ifdef VTIME
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control_chars[5] = cc[VTIME];
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#endif
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#ifdef VMIN
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control_chars[6] = cc[VMIN];
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#endif
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#ifdef VSWTC
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control_chars[7] = cc[VSWTC];
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#endif
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#ifdef VSTART
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control_chars[8] = cc[VSTART];
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#endif
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#ifdef VSTOP
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control_chars[9] = cc[VSTOP];
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#endif
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#ifdef VSUSP
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control_chars[10] = cc[VSUSP];
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#endif
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#ifdef VEOL
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control_chars[11] = cc[VEOL];
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#endif
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#ifdef VREPRINT
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control_chars[12] = cc[VREPRINT];
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#endif
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#ifdef VDISCARD
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control_chars[13] = cc[VDISCARD];
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#endif
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#ifdef VWERASE
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control_chars[14] = cc[VWERASE];
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#endif
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#ifdef VLNEXT
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control_chars[15] = cc[VLNEXT];
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#endif
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#ifdef VEOL2
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control_chars[16] = cc[VEOL2];
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#endif
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}
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static void CallDoConsoleCancelEvent()
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{
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// TODO: Call Console.cancel_handler delegate from another thread.
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}
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static void SigintHandler(int signo)
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{
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static bool insideSigint = false;
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if (insideSigint)
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return;
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insideSigint = true;
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CallDoConsoleCancelEvent();
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insideSigint = false;
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}
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static void SigcontHandler(int signo, siginfo_t *the_siginfo, void *data)
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{
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// Ignore error, there is not much we can do in the sigcont handler.
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tcsetattr(STDIN_FILENO, TCSANOW, &s_il2cppAttr);
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if (!s_keypadXmit.empty())
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write(STDOUT_FILENO, s_keypadXmit.c_str(), s_keypadXmit.length());
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// Call previous handler
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if (s_saveSigcont.sa_sigaction != NULL &&
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s_saveSigcont.sa_sigaction != (void*)SIG_DFL &&
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s_saveSigcont.sa_sigaction != (void*)SIG_IGN)
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(*s_saveSigcont.sa_sigaction)(signo, the_siginfo, data);
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}
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static void SigwinchHandler(int signo, siginfo_t *the_siginfo, void *data)
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{
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const int32_t size = GetTerminalSize();
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if (size != -1)
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s_terminalSize = size;
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// Call previous handler
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if (s_saveSigwinch.sa_sigaction != NULL &&
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s_saveSigwinch.sa_sigaction != (void*)SIG_DFL &&
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s_saveSigwinch.sa_sigaction != (void*)SIG_IGN)
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(*s_saveSigwinch.sa_sigaction)(signo, the_siginfo, data);
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}
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static void ConsoleSetupSignalHandler()
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{
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struct sigaction sigcont, sigint, sigwinch;
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memset(&sigcont, 0, sizeof(struct sigaction));
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memset(&sigint, 0, sizeof(struct sigaction));
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memset(&sigwinch, 0, sizeof(struct sigaction));
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// Continuing
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sigcont.sa_sigaction = SigcontHandler;
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sigcont.sa_flags = SA_SIGINFO;
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sigemptyset(&sigcont.sa_mask);
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sigaction(SIGCONT, &sigcont, &s_saveSigcont);
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// Interrupt handler
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sigint.sa_handler = SigintHandler;
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sigint.sa_flags = 0;
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sigemptyset(&sigint.sa_mask);
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sigaction(SIGINT, &sigint, &s_saveSigint);
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// Window size changed
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sigwinch.sa_sigaction = SigwinchHandler;
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sigwinch.sa_flags = SA_SIGINFO;
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sigemptyset(&sigwinch.sa_mask);
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sigaction(SIGWINCH, &sigwinch, &s_saveSigwinch);
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}
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// Exists in Mono, but is unused.
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static void ConsoleRestoreSignalHandlers()
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{
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sigaction(SIGCONT, &s_saveSigcont, NULL);
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sigaction(SIGINT, &s_saveSigint, NULL);
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sigaction(SIGWINCH, &s_saveSigwinch, NULL);
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}
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int32_t InternalKeyAvailable(int32_t ms_timeout)
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{
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fd_set rfds;
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struct timeval tv;
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struct timeval *tvptr;
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div_t divvy;
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int32_t ret, nbytes;
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do
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{
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FD_ZERO(&rfds);
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FD_SET(STDIN_FILENO, &rfds);
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if (ms_timeout >= 0)
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{
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divvy = div(ms_timeout, 1000);
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tv.tv_sec = divvy.quot;
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tv.tv_usec = divvy.rem;
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tvptr = &tv;
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}
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else
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{
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tvptr = NULL;
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}
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ret = select(STDIN_FILENO + 1, &rfds, NULL, NULL, tvptr);
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}
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while (ret == -1 && errno == EINTR);
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if (ret > 0)
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{
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nbytes = 0;
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ret = ioctl(STDIN_FILENO, FIONREAD, &nbytes);
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if (ret >= 0)
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ret = nbytes;
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}
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return (ret > 0) ? ret : 0;
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}
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bool SetBreak(bool wantBreak)
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{
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return SetProperty(IGNBRK, !wantBreak);
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}
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bool SetEcho(bool wantEcho)
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{
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return SetProperty(ECHO, wantEcho);
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}
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static void TtyShutdown()
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{
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if (!setupComplete)
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return;
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if (!s_teardown.empty())
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write(STDOUT_FILENO, s_teardown.c_str(), s_teardown.length());
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tcflush(STDIN_FILENO, TCIFLUSH);
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tcsetattr(STDIN_FILENO, TCSANOW, &s_initialAttr);
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SetProperty(ECHO, true);
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setupComplete = false;
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}
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bool TtySetup(const std::string& keypadXmit, const std::string& teardown, uint8_t* control_characters, int32_t** size)
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{
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s_terminalSize = GetTerminalSize();
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if (s_terminalSize == -1)
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{
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int32_t cols = 0, rows = 0;
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const char *colsValue = getenv("COLUMNS");
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if (colsValue != NULL)
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cols = atoi(colsValue);
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const char *linesValue = getenv("LINES");
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if (linesValue != NULL)
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rows = atoi(linesValue);
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if (cols != 0 && rows != 0)
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s_terminalSize = (cols << 16) | rows;
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else
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s_terminalSize = -1;
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}
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*size = &s_terminalSize;
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if (tcgetattr(STDIN_FILENO, &s_initialAttr) == -1)
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return false;
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s_il2cppAttr = s_initialAttr;
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s_il2cppAttr.c_lflag &= ~(ICANON);
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s_il2cppAttr.c_iflag &= ~(IXON | IXOFF);
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s_il2cppAttr.c_cc[VMIN] = 1;
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s_il2cppAttr.c_cc[VTIME] = 0;
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if (tcsetattr(STDIN_FILENO, TCSANOW, &s_il2cppAttr) == -1)
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return false;
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s_keypadXmit = keypadXmit;
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SetControlChars(control_characters, s_il2cppAttr.c_cc);
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if (setupComplete)
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return true;
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ConsoleSetupSignalHandler();
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setupComplete = true;
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s_teardown = teardown;
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atexit(TtyShutdown);
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return true;
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}
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#endif
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const char* NewLine()
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{
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return "\n";
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}
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}
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}
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}
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#endif
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