diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/mp-readline/readline.c | 89 |
1 files changed, 86 insertions, 3 deletions
diff --git a/lib/mp-readline/readline.c b/lib/mp-readline/readline.c index 432413d50..95a810e83 100644 --- a/lib/mp-readline/readline.c +++ b/lib/mp-readline/readline.c @@ -100,6 +100,7 @@ STATIC readline_t rl; int readline_process_char(int c) { size_t last_line_len = rl.line->len; + int cont_chars = 0; int redraw_step_back = 0; bool redraw_from_cursor = false; int redraw_step_forward = 0; @@ -178,6 +179,13 @@ int readline_process_char(int c) { int nspace = 1; #endif + // Check if we have moved into a UTF-8 continuation byte + while (UTF8_IS_CONT(rl.line->buf[rl.cursor_pos-nspace]) && + rl.cursor_pos-nspace > rl.orig_line_len) { + nspace++; + cont_chars++; + } + // do the backspace vstr_cut_out_bytes(rl.line, rl.cursor_pos - nspace, nspace); // set redraw parameters @@ -206,12 +214,37 @@ int readline_process_char(int c) { redraw_step_forward = compl_len; } #endif - } else if (32 <= c ) { + } else if (32 <= c && c <= 126) { // printable character vstr_ins_char(rl.line, rl.cursor_pos, c); // set redraw parameters redraw_from_cursor = true; redraw_step_forward = 1; + }else if (c >= 128) { + // utf-8 character + if (c >= 0xc0 && c < 0xf8) { + // First Code Point + vstr_ins_char(rl.line, rl.cursor_pos, c); + }else if (UTF8_IS_CONT(c)) { + char fcp = rl.line->buf[rl.cursor_pos]; + if (fcp >= 0xc0 && fcp < 0xf8) { + int need = (0xe5 >> ((fcp >> 3) & 0x6)) & 3; // From unicode.c L195 + cont_chars++; + while (UTF8_IS_CONT(rl.line->buf[rl.cursor_pos+cont_chars]) && + rl.cursor_pos+cont_chars < rl.line->len && cont_chars < need) { + cont_chars++; + } + vstr_ins_char(rl.line, rl.cursor_pos+cont_chars, c); + if (cont_chars == need) { + redraw_from_cursor = true; + redraw_step_forward = cont_chars+1; + } + }else{ + //ignore, for now (invalid first code point) + } + }else { + // ignore, invalid + } } } else if (rl.escape_seq == ESEQ_ESC) { switch (c) { @@ -237,6 +270,12 @@ up_arrow_key: #endif // up arrow if (rl.hist_cur + 1 < (int)READLINE_HIST_SIZE && MP_STATE_PORT(readline_hist)[rl.hist_cur + 1] != NULL) { + for (char *ch = rl.line->buf+rl.cursor_pos-1; ch > rl.line->buf+rl.orig_line_len; ch--) { + // printf("char: %d\n", ch); + if (UTF8_IS_CONT(*ch)) { + cont_chars++; + } + } // increase hist num rl.hist_cur += 1; // set line to history @@ -253,6 +292,12 @@ down_arrow_key: #endif // down arrow if (rl.hist_cur >= 0) { + for (char *ch = rl.line->buf+rl.cursor_pos-1; ch > rl.line->buf+rl.orig_line_len; ch--) { + // printf("char: %d\n", ch); + if (UTF8_IS_CONT(*ch)) { + cont_chars++; + } + } // decrease hist num rl.hist_cur -= 1; // set line to history @@ -272,6 +317,12 @@ right_arrow_key: // right arrow if (rl.cursor_pos < rl.line->len) { redraw_step_forward = 1; + // Check if we have moved into a UTF-8 continuation byte + while (UTF8_IS_CONT(rl.line->buf[rl.cursor_pos+redraw_step_forward]) && + rl.cursor_pos+redraw_step_forward < rl.line->len) { + redraw_step_forward++; + cont_chars++; + } } } else if (c == 'D') { #if MICROPY_REPL_EMACS_KEYS @@ -280,6 +331,12 @@ left_arrow_key: // left arrow if (rl.cursor_pos > rl.orig_line_len) { redraw_step_back = 1; + // Check if we have moved into a UTF-8 continuation byte + while (UTF8_IS_CONT(rl.line->buf[rl.cursor_pos-redraw_step_back]) && + rl.cursor_pos-redraw_step_back > rl.orig_line_len) { + redraw_step_back++; + cont_chars++; + } } } else if (c == 'H') { // home @@ -295,9 +352,21 @@ left_arrow_key: if (c == '~') { if (rl.escape_seq_buf[0] == '1' || rl.escape_seq_buf[0] == '7') { home_key: + for (char *ch = rl.line->buf+rl.cursor_pos-1; ch > rl.line->buf+rl.orig_line_len; ch--) { + // printf("char: %d\n", ch); + if (UTF8_IS_CONT(*ch)) { + cont_chars++; + } + } redraw_step_back = rl.cursor_pos - rl.orig_line_len; } else if (rl.escape_seq_buf[0] == '4' || rl.escape_seq_buf[0] == '8') { end_key: + for (char *ch = rl.line->buf+rl.cursor_pos-1; ch > rl.line->buf+rl.orig_line_len; ch--) { + // printf("char: %d\n", ch); + if (UTF8_IS_CONT(*ch)) { + cont_chars++; + } + } redraw_step_forward = rl.line->len - rl.cursor_pos; } else if (rl.escape_seq_buf[0] == '3') { // delete @@ -331,7 +400,7 @@ delete_key: // redraw command prompt, efficiently if (redraw_step_back > 0) { - mp_hal_move_cursor_back(redraw_step_back); + mp_hal_move_cursor_back(redraw_step_back-cont_chars); rl.cursor_pos -= redraw_step_back; } if (redraw_from_cursor) { @@ -339,10 +408,24 @@ delete_key: // erase old chars mp_hal_erase_line_from_cursor(last_line_len - rl.cursor_pos); } + // Check if we have moved into a UTF-8 continuation byte + // while (rl.cursor_pos+redraw_step_forward < rl.line->len && + // UTF8_IS_CONT(rl.line->buf[rl.cursor_pos]) && rl.cursor_pos > 0) { + // rl.cursor_pos--; + // redraw_step_forward++; + // } + + cont_chars = 0; + for (char *ch = rl.line->buf+rl.cursor_pos+redraw_step_forward; ch < rl.line->buf+rl.line->len; ch++) { + // printf("char: %d\n", ch); + if (UTF8_IS_CONT(*ch)) { + cont_chars++; + } + } // 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) - mp_hal_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) - cont_chars); rl.cursor_pos += redraw_step_forward; } else if (redraw_step_forward > 0) { // draw over old chars to move cursor forwards |