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Try too make new utf-8 code smaller again

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George Waters 2020-08-03 15:09:54 -04:00
parent 41ccbbd4e9
commit 93829e57b2
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GPG Key ID: D993F8B1CC21DB25
1 changed files with 21 additions and 27 deletions
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36
lib/mp-readline/readline.c
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@ -222,34 +222,28 @@ int readline_process_char(int c) {
redraw_step_forward = compl_len;
}
#endif
} else if (32 <= c && c <= 126) {
} else if (32 <= c) {
// 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) {
// Lead code point
vstr_ins_char(rl.line, rl.cursor_pos, c);
rl.utf8_cont_chars = 0;
}else if (UTF8_IS_CONT(c)) {
char lcp = rl.line->buf[rl.cursor_pos];
// Check for valid lead code point
if (lcp >= 0xc0 && lcp < 0xf8) {
uint8_t cont_need = 0;
if (!UTF8_IS_CONT(c)) {
// ASCII or Lead code point
rl.utf8_cont_chars = 0;
lcp = c;
}else {
rl.utf8_cont_chars += 1;
}
if (lcp >= 0xc0 && lcp < 0xf8) {
cont_need = (0xe5 >> ((lcp >> 3) & 0x6)) & 3; // From unicode.c L195
}
vstr_ins_char(rl.line, rl.cursor_pos+rl.utf8_cont_chars, c);
// set redraw parameters if we have the entire character
uint8_t need = (0xe5 >> ((lcp >> 3) & 0x6)) & 3; // From unicode.c L195
if (rl.utf8_cont_chars == need) {
if (rl.utf8_cont_chars == cont_need) {
redraw_from_cursor = true;
redraw_step_forward = rl.utf8_cont_chars+1;
cont_chars = rl.utf8_cont_chars;
}
}
}
}
} else if (rl.escape_seq == ESEQ_ESC) {
switch (c) {
case '[':
@ -274,7 +268,7 @@ 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) {
// Check for continuation characters through the cursor_pos
// Check for continuation characters
cont_chars = count_cont_bytes(rl.line->buf+rl.orig_line_len, rl.line->buf+rl.cursor_pos);
// increase hist num
rl.hist_cur += 1;
@ -292,7 +286,7 @@ down_arrow_key:
#endif
// down arrow
if (rl.hist_cur >= 0) {
// Check for continuation characters through the cursor_pos
// Check for continuation characters
cont_chars = count_cont_bytes(rl.line->buf+rl.orig_line_len, rl.line->buf+rl.cursor_pos);
// decrease hist num
rl.hist_cur -= 1;
@ -390,7 +384,7 @@ delete_key:
// erase old chars
mp_hal_erase_line_from_cursor(last_line_len - rl.cursor_pos);
}
// Check for continuation characters from the new cursor_pos to the EOL
// Check for continuation characters
cont_chars = count_cont_bytes(rl.line->buf+rl.cursor_pos+redraw_step_forward, rl.line->buf+rl.line->len);
// draw new chars
mp_hal_stdout_tx_strn(rl.line->buf + rl.cursor_pos, rl.line->len - rl.cursor_pos);