//*****************************************************************************
// handling escape sequences
static int escape_process (microrl_t * pThis, char ch)
{
if (ch == '[') {
pThis->escape_seq = _ESC_BRACKET;
return 0;
} else if (pThis->escape_seq == _ESC_BRACKET) {
if (ch == 'A') {
#ifdef _USE_HISTORY
hist_search (pThis, _HIST_UP);
#endif
return 1;
} else if (ch == 'B') {
#ifdef _USE_HISTORY
hist_search (pThis, _HIST_DOWN);
#endif
return 1;
} else if (ch == 'C') {
if (pThis->cursor < pThis->cmdlen) {
terminal_move_cursor (pThis, 1);
pThis->cursor++;
}
return 1;
} else if (ch == 'D') {
if (pThis->cursor > 0) {
terminal_move_cursor (pThis, -1);
pThis->cursor--;
}
return 1;
} else if (ch == '7') {
pThis->escape_seq = _ESC_HOME;
return 0;
} else if (ch == '8') {
pThis->escape_seq = _ESC_END;
return 0;
}
} else if (ch == '~') {
if (pThis->escape_seq == _ESC_HOME) {
terminal_reset_cursor (pThis);
pThis->cursor = 0;
return 1;
} else if (pThis->escape_seq == _ESC_END) {
terminal_move_cursor (pThis, pThis->cmdlen-pThis->cursor);
pThis->cursor = pThis->cmdlen;
return 1;
}
}
/* unknown escape sequence, stop */
return 1;
}
//*****************************************************************************
// print cmdline to screen, replace '\0' to wihitespace
static void terminal_print_line (microrl_t * pThis, int pos, int cursor)
{
pThis->print ("\033[K"); // delete all from cursor to end
char nch [] = {0,0};
for (int i = pos; i < pThis->cmdlen; i++) {
nch [0] = pThis->cmdline [i];
if (nch[0] == '\0')
nch[0] = ' ';
pThis->print (nch);
}
terminal_reset_cursor (pThis);
terminal_move_cursor (pThis, cursor);
}
void microrl_insert_char (microrl_t * pThis, int ch)
{
#ifdef _USE_ESC_SEQ
if (pThis->escape) {
if (escape_process(pThis, ch))
pThis->escape = 0;
} else {
#endif
switch (ch) {
//-----------------------------------------------------
#ifdef _ENDL_CR
case KEY_CR:
new_line_handler(pThis);
break;
case KEY_LF:
break;
#elif defined(_ENDL_CRLF)
case KEY_CR:
pThis->tmpch = KEY_CR;
break;
case KEY_LF:
if (pThis->tmpch == KEY_CR)
new_line_handler(pThis);
break;
#elif defined(_ENDL_LFCR)
case KEY_LF:
pThis->tmpch = KEY_LF;
break;
case KEY_CR:
if (pThis->tmpch == KEY_LF)
new_line_handler(pThis);
break;
#else
case KEY_CR:
break;
case KEY_LF:
new_line_handler(pThis);
break;
#endif
//-----------------------------------------------------
#ifdef _USE_COMPLETE
case KEY_HT:
microrl_get_complite (pThis);
break;
#endif
//-----------------------------------------------------
case KEY_ESC:
#ifdef _USE_ESC_SEQ
pThis->escape = 1;
#endif
break;
//-----------------------------------------------------
case KEY_NAK: // ^U
while (pThis->cursor > 0) {
microrl_backspace (pThis);
}
terminal_print_line (pThis, 0, pThis->cursor);
break;
//-----------------------------------------------------
case KEY_VT: // ^K
pThis->print ("\033[K");
pThis->cmdlen = pThis->cursor;
break;
//-----------------------------------------------------
case KEY_ENQ: // ^E
terminal_move_cursor (pThis, pThis->cmdlen-pThis->cursor);
pThis->cursor = pThis->cmdlen;
break;
//-----------------------------------------------------
case KEY_SOH: // ^A
terminal_reset_cursor (pThis);
pThis->cursor = 0;
break;
//-----------------------------------------------------
case KEY_ACK: // ^F
if (pThis->cursor < pThis->cmdlen) {
terminal_move_cursor (pThis, 1);
pThis->cursor++;
}
break;
//-----------------------------------------------------
case KEY_STX: // ^B
if (pThis->cursor) {
terminal_move_cursor (pThis, -1);
pThis->cursor--;
}
break;
//-----------------------------------------------------
case KEY_DLE: //^P
#ifdef _USE_HISTORY
hist_search (pThis, _HIST_UP);
#endif
break;
//-----------------------------------------------------
case KEY_SO: //^N
#ifdef _USE_HISTORY
hist_search (pThis, _HIST_DOWN);
#endif
break;
//-----------------------------------------------------
case KEY_DEL: // Backspace
case KEY_BS: // ^U
microrl_backspace (pThis);
terminal_print_line (pThis, pThis->cursor, pThis->cursor);
break;
#ifdef _USE_CTLR_C
case KEY_ETX:
if (pThis->sigint != NULL)
pThis->sigint();
break;
#endif
//-----------------------------------------------------
default:
if (((ch == ' ') && (pThis->cmdlen == 0)) || IS_CONTROL_CHAR(ch))
break;
if (microrl_insert_text (pThis, (char*)&ch, 1) && echo)
terminal_print_line (pThis, pThis->cursor-1, pThis->cursor);
break;
}
#ifdef _USE_ESC_SEQ
}
#endif
}
