static bool
hangul_buffer_backspace(HangulBuffer *buffer)
{
if (buffer->index >= 0) {
ucschar ch = hangul_buffer_pop(buffer);
if (ch == 0)
return false;
if (buffer->index >= 0) {
if (hangul_is_choseong(ch)) {
ch = hangul_buffer_peek(buffer);
buffer->choseong = hangul_is_choseong(ch) ? ch : 0;
return true;
} else if (hangul_is_jungseong(ch)) {
ch = hangul_buffer_peek(buffer);
buffer->jungseong = hangul_is_jungseong(ch) ? ch : 0;
return true;
} else if (hangul_is_jongseong(ch)) {
ch = hangul_buffer_peek(buffer);
buffer->jongseong = hangul_is_jongseong(ch) ? ch : 0;
return true;
}
} else {
buffer->choseong = 0;
buffer->jungseong = 0;
buffer->jongseong = 0;
return true;
}
}
return false;
}
static ucschar
hangul_ic_combine(HangulInputContext* hic, ucschar first, ucschar second)
{
if (!hic->option_combi_on_double_stroke) {
if (hangul_keyboard_get_type(hic->keyboard) == HANGUL_KEYBOARD_TYPE_JAMO) {
/* 옛한글은 아래 규칙을 적용하지 않아야 입력가능한 글자가 있으므로
* 적용하지 않는다. */
if (first == second &&
hangul_is_jamo_conjoinable(first)) {
return 0;
}
}
}
ucschar combined = 0;
combined = hangul_keyboard_combine(hic->keyboard, 0, first, second);
if (!hic->option_non_choseong_combi) {
if (hangul_is_choseong(first) && hangul_is_choseong(second) &&
hangul_is_jongseong(combined)) {
return 0;
}
}
return combined;
}
static void
hangul_buffer_push(HangulBuffer *buffer, ucschar ch)
{
if (hangul_is_choseong(ch)) {
buffer->choseong = ch;
} else if (hangul_is_jungseong(ch)) {
buffer->jungseong = ch;
} else if (hangul_is_jongseong(ch)) {
buffer->jongseong = ch;
} else {
}
buffer->stack[++buffer->index] = ch;
}
static inline bool
hangul_ic_push(HangulInputContext *hic, ucschar c)
{
ucschar buf[64] = { 0, };
if (hic->on_transition != NULL) {
ucschar cho, jung, jong;
if (hangul_is_choseong(c)) {
cho = c;
jung = hic->buffer.jungseong;
jong = hic->buffer.jongseong;
} else if (hangul_is_jungseong(c)) {
cho = hic->buffer.choseong;
jung = c;
jong = hic->buffer.jongseong;
} else if (hangul_is_jongseong(c)) {
cho = hic->buffer.choseong;
jung = hic->buffer.jungseong;
jong = c;
} else {
hangul_ic_flush_internal(hic);
return false;
}
hangul_jaso_to_string(cho, jung, jong, buf, N_ELEMENTS(buf));
if (!hic->on_transition(hic, c, buf, hic->on_transition_data)) {
hangul_ic_flush_internal(hic);
return false;
}
} else {
if (!hangul_is_jamo(c)) {
hangul_ic_flush_internal(hic);
return false;
}
}
hangul_buffer_push(&hic->buffer, c);
return true;
}
static bool
hangul_ic_process_romaja(HangulInputContext *hic, int ascii, ucschar ch)
{
ucschar jong;
ucschar combined;
if (!hangul_is_jamo(ch) && ch > 0) {
hangul_ic_save_commit_string(hic);
hangul_ic_append_commit_string(hic, ch);
return true;
}
if (isupper(ascii)) {
hangul_ic_save_commit_string(hic);
}
if (hic->buffer.jongseong) {
if (ascii == 'x' || ascii == 'X') {
ch = 0x110c;
hangul_ic_save_commit_string(hic);
if (!hangul_ic_push(hic, ch)) {
return false;
}
} else if (hangul_is_choseong(ch) || hangul_is_jongseong(ch)) {
if (hangul_is_jongseong(ch))
jong = ch;
else
jong = hangul_choseong_to_jongseong(ch);
combined = hangul_combination_combine(hic->combination,
hic->buffer.jongseong, jong);
if (hangul_is_jongseong(combined)) {
if (!hangul_ic_push(hic, combined)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
hangul_ic_save_commit_string(hic);
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else if (hangul_is_jungseong(ch)) {
if (hic->buffer.jongseong == 0x11bc) {
hangul_ic_save_commit_string(hic);
hic->buffer.choseong = 0x110b;
hangul_ic_push(hic, ch);
} else {
ucschar pop, peek;
pop = hangul_ic_pop(hic);
peek = hangul_ic_peek(hic);
if (hangul_is_jungseong(peek)) {
if (pop == 0x11aa) {
hic->buffer.jongseong = 0x11a8;
} else {
hic->buffer.jongseong = 0;
}
hangul_ic_save_commit_string(hic);
hangul_ic_push(hic, hangul_jongseong_to_choseong(pop));
if (!hangul_ic_push(hic, ch)) {
return false;
}
} else {
ucschar choseong = 0, jongseong = 0;
hangul_jongseong_dicompose(hic->buffer.jongseong,
&jongseong, &choseong);
hic->buffer.jongseong = jongseong;
hangul_ic_save_commit_string(hic);
hangul_ic_push(hic, choseong);
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
}
} else {
goto flush;
}
} else if (hic->buffer.jungseong) {
if (hangul_is_choseong(ch)) {
if (hic->buffer.choseong) {
jong = hangul_choseong_to_jongseong(ch);
if (hangul_is_jongseong(jong)) {
if (!hangul_ic_push(hic, jong)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
hangul_ic_save_commit_string(hic);
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
if (!hangul_ic_push(hic, ch)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
}
} else if (hangul_is_jungseong(ch)) {
combined = hangul_combination_combine(hic->combination,
hic->buffer.jungseong, ch);
if (hangul_is_jungseong(combined)) {
if (!hangul_ic_push(hic, combined)) {
return false;
}
} else {
hangul_ic_save_commit_string(hic);
hic->buffer.choseong = 0x110b;
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else if (hangul_is_jongseong(ch)) {
if (!hangul_ic_push(hic, ch)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
goto flush;
}
} else if (hic->buffer.choseong) {
if (hangul_is_choseong(ch)) {
combined = hangul_combination_combine(hic->combination,
hic->buffer.choseong, ch);
if (combined == 0) {
hic->buffer.jungseong = 0x1173;
hangul_ic_flush_internal(hic);
if (!hangul_ic_push(hic, ch)) {
return false;
}
} else {
if (!hangul_ic_push(hic, combined)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
}
} else if (hangul_is_jongseong(ch)) {
hic->buffer.jungseong = 0x1173;
hangul_ic_save_commit_string(hic);
if (ascii == 'x' || ascii == 'X')
ch = 0x110c;
if (!hangul_ic_push(hic, ch)) {
return false;
}
} else {
if (!hangul_ic_push(hic, ch)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
}
} else {
if (ascii == 'x' || ascii == 'X') {
ch = 0x110c;
}
if (!hangul_ic_push(hic, ch)) {
return false;
} else {
if (hic->buffer.choseong == 0 && hic->buffer.jungseong != 0)
hic->buffer.choseong = 0x110b;
}
}
hangul_ic_save_preedit_string(hic);
return true;
flush:
hangul_ic_flush_internal(hic);
return false;
}
static bool
hangul_ic_process_jaso(HangulInputContext *hic, ucschar ch)
{
if (hangul_is_choseong(ch)) {
if (hic->buffer.choseong == 0) {
if (!hangul_ic_push(hic, ch)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
ucschar choseong = 0;
if (hangul_is_choseong(hangul_ic_peek(hic))) {
choseong = hangul_combination_combine(hic->combination,
hic->buffer.choseong, ch);
}
if (choseong) {
if (!hangul_ic_push(hic, choseong)) {
if (!hangul_ic_push(hic, choseong)) {
return false;
}
}
} else {
hangul_ic_save_commit_string(hic);
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
}
} else if (hangul_is_jungseong(ch)) {
if (hic->buffer.jungseong == 0) {
if (!hangul_ic_push(hic, ch)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
ucschar jungseong = 0;
if (hangul_is_jungseong(hangul_ic_peek(hic))) {
jungseong = hangul_combination_combine(hic->combination,
hic->buffer.jungseong, ch);
}
if (jungseong) {
if (!hangul_ic_push(hic, jungseong)) {
if (!hangul_ic_push(hic, jungseong)) {
return false;
}
}
} else {
hangul_ic_save_commit_string(hic);
if (!hangul_ic_push(hic, ch)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
}
}
} else if (hangul_is_jongseong(ch)) {
if (hic->buffer.jongseong == 0) {
if (!hangul_ic_push(hic, ch)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
ucschar jongseong = 0;
if (hangul_is_jongseong(hangul_ic_peek(hic))) {
jongseong = hangul_combination_combine(hic->combination,
hic->buffer.jongseong, ch);
}
if (jongseong) {
if (!hangul_ic_push(hic, jongseong)) {
if (!hangul_ic_push(hic, jongseong)) {
return false;
}
}
} else {
hangul_ic_save_commit_string(hic);
if (!hangul_ic_push(hic, ch)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
}
}
} else if (ch > 0) {
hangul_ic_save_commit_string(hic);
hangul_ic_append_commit_string(hic, ch);
} else {
hangul_ic_save_commit_string(hic);
return false;
}
hangul_ic_save_preedit_string(hic);
return true;
}
static bool
hangul_ic_process_jamo(HangulInputContext *hic, ucschar ch)
{
ucschar jong;
ucschar combined;
if (!hangul_is_jamo(ch) && ch > 0) {
hangul_ic_save_commit_string(hic);
hangul_ic_append_commit_string(hic, ch);
return true;
}
if (hic->buffer.jongseong) {
if (hangul_is_choseong(ch)) {
jong = hangul_choseong_to_jongseong(ch);
combined = hangul_combination_combine(hic->combination,
hic->buffer.jongseong, jong);
if (hangul_is_jongseong(combined)) {
if (!hangul_ic_push(hic, combined)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
hangul_ic_save_commit_string(hic);
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else if (hangul_is_jungseong(ch)) {
ucschar pop, peek;
pop = hangul_ic_pop(hic);
peek = hangul_ic_peek(hic);
if (hangul_is_jungseong(peek)) {
hic->buffer.jongseong = 0;
hangul_ic_save_commit_string(hic);
hangul_ic_push(hic, hangul_jongseong_to_choseong(pop));
if (!hangul_ic_push(hic, ch)) {
return false;
}
} else {
ucschar choseong = 0, jongseong = 0;
hangul_jongseong_dicompose(hic->buffer.jongseong,
&jongseong, &choseong);
hic->buffer.jongseong = jongseong;
hangul_ic_save_commit_string(hic);
hangul_ic_push(hic, choseong);
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
goto flush;
}
} else if (hic->buffer.jungseong) {
if (hangul_is_choseong(ch)) {
if (hic->buffer.choseong) {
jong = hangul_choseong_to_jongseong(ch);
if (hangul_is_jongseong(jong)) {
if (!hangul_ic_push(hic, jong)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
hangul_ic_save_commit_string(hic);
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
if (!hangul_ic_push(hic, ch)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
}
} else if (hangul_is_jungseong(ch)) {
combined = hangul_combination_combine(hic->combination,
hic->buffer.jungseong, ch);
if (hangul_is_jungseong(combined)) {
if (!hangul_ic_push(hic, combined)) {
return false;
}
} else {
hangul_ic_save_commit_string(hic);
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
goto flush;
}
} else if (hic->buffer.choseong) {
if (hangul_is_choseong(ch)) {
combined = hangul_combination_combine(hic->combination,
hic->buffer.choseong, ch);
if (!hangul_ic_push(hic, combined)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
if (!hangul_ic_push(hic, ch)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
}
} else {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
hangul_ic_save_preedit_string(hic);
return true;
flush:
hangul_ic_flush_internal(hic);
return false;
}
static bool
hangul_ic_process_jamo(HangulInputContext *hic, ucschar ch)
{
ucschar jong;
ucschar combined;
if (!hangul_is_jamo(ch) && ch > 0) {
hangul_ic_save_commit_string(hic);
hangul_ic_append_commit_string(hic, ch);
return true;
}
if (hic->buffer.jongseong) {
if (hangul_is_choseong(ch)) {
jong = hangul_ic_choseong_to_jongseong(hic, ch);
combined = hangul_ic_combine(hic, hic->buffer.jongseong, jong);
if (hangul_is_jongseong(combined)) {
if (!hangul_ic_push(hic, combined)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
hangul_ic_save_commit_string(hic);
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else if (hangul_is_jungseong(ch)) {
ucschar pop, peek;
pop = hangul_ic_pop(hic);
peek = hangul_ic_peek(hic);
if (hangul_is_jongseong(peek)) {
ucschar choseong = hangul_jongseong_get_diff(peek,
hic->buffer.jongseong);
if (choseong == 0) {
hangul_ic_save_commit_string(hic);
if (!hangul_ic_push(hic, ch)) {
return false;
}
} else {
hic->buffer.jongseong = peek;
hangul_ic_save_commit_string(hic);
hangul_ic_push(hic, choseong);
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
hic->buffer.jongseong = 0;
hangul_ic_save_commit_string(hic);
hangul_ic_push(hic, hangul_jongseong_to_choseong(pop));
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
goto flush;
}
} else if (hic->buffer.jungseong) {
if (hangul_is_choseong(ch)) {
if (hic->buffer.choseong) {
jong = hangul_ic_choseong_to_jongseong(hic, ch);
if (hangul_is_jongseong(jong)) {
if (!hangul_ic_push(hic, jong)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
hangul_ic_save_commit_string(hic);
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
if (hic->option_auto_reorder) {
/* kr 처럼 자모가 역순인 경우 처리 */
if (!hangul_ic_push(hic, ch)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
hangul_ic_save_commit_string(hic);
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
}
} else if (hangul_is_jungseong(ch)) {
combined = hangul_ic_combine(hic, hic->buffer.jungseong, ch);
if (hangul_is_jungseong(combined)) {
if (!hangul_ic_push(hic, combined)) {
return false;
}
} else {
hangul_ic_save_commit_string(hic);
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
goto flush;
}
} else if (hic->buffer.choseong) {
if (hangul_is_choseong(ch)) {
combined = hangul_ic_combine(hic, hic->buffer.choseong, ch);
/* 초성을 입력한 combine 함수에서 종성이 나오게 된다면
* 이전 초성도 종성으로 바꿔 주는 편이 나머지 처리에 편리하다.
* 이 기능은 MS IME 호환기능으로 ㄳ을 입력하는데 사용한다. */
if (hangul_is_jongseong(combined)) {
hic->buffer.choseong = 0;
ucschar pop = hangul_ic_pop(hic);
ucschar jong = hangul_choseong_to_jongseong(pop);
hangul_ic_push(hic, jong);
}
if (!hangul_ic_push(hic, combined)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
} else {
if (!hangul_ic_push(hic, ch)) {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
}
} else {
if (!hangul_ic_push(hic, ch)) {
return false;
}
}
hangul_ic_save_preedit_string(hic);
return true;
flush:
hangul_ic_flush_internal(hic);
return false;
}