Newer
Older
Screen::Screen() {
*cmd_buffer_ = 0;
cmd_buf_off_ = 0;
cmd_win_off_ = 0;
cmd_history_off_ = 0;
}
// load history file
msg_load(O.history_file);
// Init ncurses
initscr();
// register end stop ncurses before exit
atexit((void (*)(void)) endwin);
// Set good parameters
cbreak();
keypad(stdscr, TRUE);
// refresh parameters (needed by ncurses)
// Check screen size
if (LINES < 6 || COLS < 3) {
std::cerr << "Screen is too small." << std::endl;
exit(ERR_SCREENSZ);
}
if ((size_t) LINES > O.history_size)
O.history_size = LINES;
noecho();
clear();
refresh();
// msg window
if (msg_)
delwin(msg_);
msg_ = newwin(LINES - 3, COLS, 0, 0);
msg_draw();
// cmd window
if (cmd_)
delwin(cmd_);
cmd_ = newwin(3, COLS, LINES - 3, 0);
cmd_draw();
}
void Screen::login() {
char *buf;
int size;
const char *smsg;
clear();
box(stdscr, 0,0);
move(1, 1);
// ask login
if (O.login.empty()) {
smsg = "Login: ";
size = COLS - 2 - strlen(smsg);
buf = new char[size + 1];
echo();
printw(smsg);
refresh();
getnstr(buf, size);
buf[size] = 0;
O.login = buf;
delete [] buf;
move(2,1);
}
// ask password
smsg = "Password: ";
size = COLS - 2 - strlen(smsg);
buf = new char[size + 1];
printw(smsg);
noecho();
refresh();
getnstr(buf, size);
buf[size] = 0;
O.login = buf;
delete [] buf;
//nominal screen nom
create_windows();
// --------------------------- KEY UP ------------------------------------
memcpy(cmd_history_buffer_, cmd_buffer_, MAX_LINE_SIZE);
strncpy(cmd_buffer_, msg_get(cmd_history_off_++).c_str(), MAX_LINE_SIZE);
cmd_buffer_[MAX_LINE_SIZE - 1] = 0;
cmd_buf_off_ = strlen(cmd_buffer_);
// --------------------------- KEY DOWN ----------------------------------
case KEY_DOWN:
if (cmd_history_off_ == 0)
break;
--cmd_history_off_;
if (cmd_history_off_ == 0)
memcpy(cmd_buffer_, cmd_history_buffer_, MAX_LINE_SIZE);
strncpy(cmd_buffer_, msg_get(cmd_history_off_ - 1).c_str(), MAX_LINE_SIZE);
cmd_buffer_[MAX_LINE_SIZE - 1] = 0;
cmd_buf_off_ = strlen(cmd_buffer_);
// --------------------------- KEY LEFT ----------------------------------
// --------------------------- KEY RIGHT ---------------------------------
if ((size_t) cmd_buf_off_ < strlen(cmd_buffer_))
++cmd_buf_off_;
// --------------------------- KEY HOME ----------------------------------
// --------------------------- KEY END -----------------------------------
case KEY_END:
cmd_buf_off_ = strlen(cmd_buffer_);
// --------------------------- KEY RETURN --------------------------------
// print to msg
msg_print(cmd_buffer_);
// print result
cmd_draw();
// --------------------------- KEY BACKSPACE------------------------------
if (del_char(cmd_buffer_, cmd_buf_off_ - 1, MAX_LINE_SIZE))
--cmd_buf_off_;
cmd_draw();
// --------------------------- KEY DELETE --------------------------------
del_char(cmd_buffer_, cmd_buf_off_, MAX_LINE_SIZE);
// --------------------------- KEY RESIZE --------------------------------
case KEY_RESIZE:
create_windows();
// --------------------------- KEY EOF -----------------------------------
// -------------------------ALL OTHERS KEYS ------------------------------
if (add_char(key, cmd_buffer_, cmd_buf_off_, MAX_LINE_SIZE))
// clean and redraw the cmd box
werase(cmd_);
box(cmd_, 0, 0);
wmove(cmd_, 1, 1);
if (cmd_buf_off_ + 1 > (size_t) COLS - 2 + cmd_win_off_)
cmd_win_off_ = cmd_buf_off_ + 1 - (COLS - 2) ;
else if (cmd_buf_off_ < cmd_win_off_)
cmd_win_off_ = cmd_buf_off_;
size_t minsize = (MAX_LINE_SIZE < COLS - 2) ? MAX_LINE_SIZE : COLS - 2;
strncpy(print_buf, cmd_buffer_ + cmd_win_off_, minsize);
print_buf[minsize - 1] = 0;
// print print buffer
wattron(cmd_, A_BOLD);
wprintw(cmd_, "%s", print_buf);
wattroff(cmd_, A_BOLD);
// move cursor to right pos
wmove(cmd_, 1, 1 + cmd_buf_off_ - cmd_win_off_);
void Screen::msg_draw() {
werase(msg_);
box(msg_, 0, 0);
wrefresh(msg_);
}
/*!
** Add a char in a buffer
**
** @param c char to add
** @param offset where add in the buffer
*/
bool Screen::add_char(char c, char *string, ssize_t offset, size_t buf_len) {
// check if add one char is in range
if (len + 1 > buf_len - 1)
return false;
// check if offset is good
if (offset >= (ssize_t) buf_len - 1 || offset < 0)
// move one char every char
for (ssize_t i = len; i >= offset; --i)
string[i + 1] = string[i];
string[offset] = c;
bool Screen::del_char(char *string, ssize_t offset, size_t buf_len) {
assert(string);
size_t len = strlen(string);
// check if del one char is possible
if (len == 0)
// check if offset is good
if (offset >= (ssize_t) buf_len - 1 || offset < 0)
// move one char every char
for (; string[offset] != 0; ++offset)
string[offset] = string[offset + 1];
void Screen::msg_add(const string &s) {
assert(strchr(s.c_str(), '\n') == 0);
if (s.empty())
return;
if (msg_table_.size() >= O.history_size)
msg_table_.resize(O.history_size);
msg_table_.push_front(s);
const string &Screen::msg_get(size_t i) const {
assert(i < msg_table_.size());
t_lines::const_iterator it;
size_t pos;
static string empty;
for (pos = 0, it = msg_table_.begin();
it != msg_table_.end();
++pos, ++it)
if (pos == i)
return *it;
return empty;
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
size_t Screen::msg_size() const {
return msg_table_.size();
}
void Screen::msg_print(const string &s) {
msg_add(s);
msg_draw();
}
void Screen::msg_load(const string &filename) {
ifstream fs;
t_lines::const_iterator it;
char buf[MAX_LINE_SIZE];
fs.open(filename.c_str(), ifstream::in);
if (!fs.is_open())
return;
while (!fs.eof()) {
if (fs.fail())
throw Error(ERR_FILE, "Unable to load history");
fs.getline(buf, MAX_LINE_SIZE);
msg_add(buf);
}
fs.close();
}
void Screen::msg_save(const string &filename) const {
ofstream fs;
t_lines::const_reverse_iterator rit;
fs.open(filename.c_str(), ostream::out | ostream::trunc);
if (!fs.is_open())
throw Error(ERR_FILE, "Unable to open history file");
for (rit = msg_table_.rbegin(); rit != msg_table_.rend(); ++rit) {
fs.write((*rit).c_str(), (*rit).length());
fs.put('\n');
if (fs.fail())
throw Error(ERR_FILE, "Unable to save history");
}
fs.close();
}
Screen &operator<< (Screen &scr, const string &s) {
scr.msg_print(s);