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//===========================================
// Lumina-DE source code
// Copyright (c) 2015, Ken Moore
// Available under the 3-clause BSD license
// See the LICENSE file for full details
//===========================================
// This is basically a replacement for QProcess, where all process/terminal outputs
// are redirected and not just the standard input/output channels. This allows it
// to be used for terminal-like apps (shells) which directly modify the terminal output
// rather than stick to input/output channels for communication.
//===========================================
// IMPLEMENTATION NOTE
//======================
// The process requires/uses ANSI control codes (\x1B[<something>) for special operations
// such as moving the cursor, erasing characters, etc..
// It is recommended that you pair this class with the graphical "TerminalWidget.h" class
// or some other ANSI-compatible display widget.
//===========================================
#ifndef _LUMINA_DESKTOP_UTILITIES_TERMINAL_TTY_PROCESS_WIDGET_H
#define _LUMINA_DESKTOP_UTILITIES_TERMINAL_TTY_PROCESS_WIDGET_H
#include <QDebug>
#include <QSocketNotifier>
#include <QKeyEvent>
//Standard C library functions for PTY access/setup
#include <stdlib.h>
#include <fcntl.h>
#include <termios.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <signal.h>
class TTYProcess : public QObject{
Q_OBJECT
public:
TTYProcess(QObject *parent = 0);
~TTYProcess();
bool startTTY(QString prog, QStringList args = QStringList(), QString workdir = "~");
void closeTTY();
//Primary read/write functions
void writeTTY(QByteArray output);
QByteArray readTTY();
//Setup the terminal size (characters and pixels)
void setTerminalSize(QSize chars, QSize pixels);
//Status update checks
bool isOpen();
//Functions for handling ANSI escape codes (typically not used by hand)
QByteArray CleanANSI(QByteArray, bool &incomplete);
private:
pid_t childProc;
int ttyfd;
QSocketNotifier *sn;
QByteArray fragBA; //fragment ByteArray
bool starting;
int fixReply; //flag for detecting particular inputs and "fixing" the reply to it as needed
//====================================
// C Library function for setting up the PTY
// Inputs:
// int &fd: (output) file descriptor for the master PTY (positive integer if valid)
// char *prog: program to run
// char **args: program arguments
// Returns:
// -1 for errors, child process PID (positive integer) if successful
//====================================
static pid_t LaunchProcess(int& fd, char *prog, char **child_args);
private slots:
void checkStatus(int);
signals:
void readyRead();
void processClosed();
};
#endif
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