diff options
| -rw-r--r-- | lib/mp-readline/readline.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/lib/mp-readline/readline.c b/lib/mp-readline/readline.c index 1334eb91d9..7f63fd2d8e 100644 --- a/lib/mp-readline/readline.c +++ b/lib/mp-readline/readline.c @@ -60,7 +60,14 @@ STATIC char *str_dup_maybe(const char *str) { return s2; } -STATIC void move_cursor_back(uint pos) { +// By default assume terminal which implements VT100 commands... +#ifndef MICROPY_HAL_HAS_VT100 +#define MICROPY_HAL_HAS_VT100 (1) +#endif + +// ...and provide the implementation using them +#if MICROPY_HAL_HAS_VT100 +STATIC void mp_hal_move_cursor_back(uint pos) { if (pos <= 4) { // fast path for most common case of 1 step back mp_hal_stdout_tx_strn("\b\b\b\b", pos); @@ -75,9 +82,10 @@ STATIC void move_cursor_back(uint pos) { } } -STATIC void erase_line_from_cursor(void) { +STATIC void mp_hal_erase_line_from_cursor(void) { mp_hal_stdout_tx_strn("\x1b[K", 3); } +#endif typedef struct _readline_t { vstr_t *line; @@ -257,19 +265,19 @@ end_key: // redraw command prompt, efficiently if (redraw_step_back > 0) { - move_cursor_back(redraw_step_back); + mp_hal_move_cursor_back(redraw_step_back); rl.cursor_pos -= redraw_step_back; } if (redraw_from_cursor) { if (rl.line->len < last_line_len) { // erase old chars // (number of chars to erase: last_line_len - rl.cursor_pos) - erase_line_from_cursor(); + mp_hal_erase_line_from_cursor(); } // draw new chars mp_hal_stdout_tx_strn(rl.line->buf + rl.cursor_pos, rl.line->len - rl.cursor_pos); // move cursor forward if needed (already moved forward by length of line, so move it back) - move_cursor_back(rl.line->len - (rl.cursor_pos + redraw_step_forward)); + mp_hal_move_cursor_back(rl.line->len - (rl.cursor_pos + redraw_step_forward)); rl.cursor_pos += redraw_step_forward; } else if (redraw_step_forward > 0) { // draw over old chars to move cursor forwards |