WIP editor

Can only read the password no safe for edit

environment/lin_editor.cpp

@@ -0,0 +1,89 @@
+#include <stdlib.h>
+#include <sys/ioctl.h>
+#include <termios.h>
+#include <unistd.h>
+
+#include "environment.hpp"
+
+#ifndef STDOUT_FILENO
+#define STDOUT_FILENO 1
+#endif
+#ifndef STDIN_FILENO
+#define STDIN_FILENO 0
+#endif
+
+int getWindowSize(int *rows, int *cols)
+{
+  struct winsize ws;
+
+  // Getting window size thanks to ioctl into the given
+  // winsize struct.
+  if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) == -1 || ws.ws_col == 0)
+  {
+    return -1;
+  }
+  else
+  {
+    *cols = ws.ws_col;
+    *rows = ws.ws_row;
+    return 0;
+  }
+}
+
+static struct termios orig_termios;
+
+static void disableRawMode()
+{
+  tcsetattr(STDIN_FILENO, TCSAFLUSH, &orig_termios);
+}
+
+int enableRawMode(void)
+{
+  // Save original terminal state into orig_termios.
+  if (tcgetattr(STDIN_FILENO, &orig_termios) == -1)
+    return 1;
+  // At exit, restore the original state.
+  atexit(disableRawMode);
+
+  // Modify the original state to enter in raw mode.
+  struct termios raw = orig_termios;
+  // This disables Ctrl-M, Ctrl-S and Ctrl-Q commands.
+  // (BRKINT, INPCK and ISTRIP are not estrictly mandatory,
+  // but it is recommended to turn them off in case any
+  // system needs it).
+  raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
+  // Turning off all output processing (\r\n).
+  raw.c_oflag &= ~(OPOST);
+  // Setting character size to 8 bits per byte (it should be
+  // like that on most systems, but whatever).
+  raw.c_cflag |= (CS8);
+  // Using NOT operator on ECHO | ICANON | IEXTEN | ISIG and
+  // then bitwise-AND them with flags field in order to
+  // force c_lflag 4th bit to become 0. This disables
+  // chars being printed (ECHO) and let us turn off
+  // canonical mode in order to read input byte-by-byte
+  // instead of line-by-line (ICANON), ISIG disables
+  // Ctrl-C command and IEXTEN the Ctrl-V one.
+  raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
+  // read() function now returns as soon as there is any
+  // input to be read.
+  raw.c_cc[VMIN] = 0;
+  // Forcing read() function to return every 1/10 of a
+  // second if there is nothing to read.
+  raw.c_cc[VTIME] = 1;
+
+  // consoleBufferOpen();
+
+  if (tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw) == -1)
+    return 1;
+
+  return 0;
+}
+int writeTerm(const char *buf, int length)
+{
+  return write(STDOUT_FILENO, buf, length);
+}
+int readTerm(char *buf, int length)
+{
+  return read(STDIN_FILENO, buf, length);
+}