Add Chinese Traditional IM support, Please kindly help me to inspect the codes, Thanks!
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Song Huang
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1 changed files with 189 additions and 0 deletions
189
src/im.c
189
src/im.c
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@ -61,6 +61,7 @@ enum {
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IM_TIP_KATAKANA,
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IM_TIP_HANGUL,
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IM_TIP_THAI,
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IM_TIP_ZH_TW,
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NUM_IM_TIPS
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};
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@ -83,6 +84,9 @@ static const char* const im_tip_text[NUM_IM_TIPS] =
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// Input Method: Thai mode
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gettext_noop("Thai")
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// Input Method: Traditional Chinese mode
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gettext_noop("ZH_TW")
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};
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@ -704,6 +708,190 @@ static int im_event_c(IM_DATA* im, SDL_keysym ks)
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return 0;
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}
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/**
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* Chinese Traditional IM.
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*
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* @see im_read
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*/
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static int im_event_zh_tw(IM_DATA* im, SDL_keysym ks)
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{
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static const char* lang_file = IMDIR "zh_tw.im";
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enum { SEC_ENGLISH, SEC_ZH_TW, SEC_TOTAL };
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static CHARMAP cm;
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/* Handle event requests */
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switch(im->request) {
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case 0: break;
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case IM_REQ_FREE: /* Free allocated resources */
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charmap_free(&cm);
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/* go onto full reset */
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case IM_REQ_RESET_FULL: /* Full reset */
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cm.section = SEC_ENGLISH;
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im->tip_text = im_tip_text[IM_TIP_ENGLISH];
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/* go onto soft reset */
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case IM_REQ_RESET_SOFT: /* Soft reset */
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im->s[0] = L'\0';
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im->buf[0] = L'\0';
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im->redraw = 0;
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cm.match_count = 0;
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cm.match_is_final = 0;
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cm.match_state = &cm.sections[cm.section];
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cm.match_state_prev = &cm.sections[cm.section];
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break;
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case IM_REQ_INIT: /* Initialization */
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charmap_init(&cm);
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if(charmap_load(&cm, lang_file)) {
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fprintf(stderr, "Unable to load %s, defaulting to im_event_c\n", lang_file);
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im->lang = LANG_DEFAULT;
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return im_event_c(im, ks);
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}
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im_fullreset(im);
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#ifdef DEBUG
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printf("IM: Loaded '%s'\n", lang_file);
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#endif
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break;
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}
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if(im->request != IM_REQ_TRANSLATE) return 0;
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/* Discard redraw characters, so they can be redrawn */
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if((int)wcslen(im->s) < im->redraw) im->redraw = wcslen(im->s);
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wcs_lshift(im->s, (wcslen(im->s) - im->redraw) );
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/* Handle keys */
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switch(ks.sym) {
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/* Keys to ignore */
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case SDLK_NUMLOCK: case SDLK_CAPSLOCK: case SDLK_SCROLLOCK:
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case SDLK_LSHIFT: case SDLK_RSHIFT:
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case SDLK_LCTRL: case SDLK_RCTRL:
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case SDLK_LMETA: case SDLK_RMETA:
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case SDLK_LSUPER: case SDLK_RSUPER:
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case SDLK_MODE: case SDLK_COMPOSE:
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break;
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/* Left-Alt & Right-Alt mapped to mode-switch */
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case SDLK_RALT: case SDLK_LALT:
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cm.section = (++cm.section % SEC_TOTAL); /* Change section */
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im_softreset(im); /* Soft reset */
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/* Set tip text */
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switch(cm.section) {
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case SEC_ENGLISH: im->tip_text = im_tip_text[IM_TIP_ENGLISH]; break;
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case SEC_ZH_TW: im->tip_text = im_tip_text[IM_TIP_ZH_TW]; break;
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}
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break;
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/* Enter finalizes previous redraw */
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case SDLK_RETURN:
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if(im->redraw <= 0) {
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im->s[0] = L'\r';
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im->s[1] = L'\0';
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}
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im->buf[0] = L'\0';
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im->redraw = 0;
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break;
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/* Actual character processing */
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default:
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/* English mode */
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if(cm.section == SEC_ENGLISH) {
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im->s[0] = ks.unicode;
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im->s[1] = L'\0';
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im->buf[0] = L'\0';
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}
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/* Thai mode */
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else {
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wchar_t u = ks.unicode;
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im->s[0] = L'\0'; /* Zero-out output string */
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wcsncat(im->buf, &u, 1); /* Copy new character */
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/* Translate the characters */
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im->redraw = 0;
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while(1) {
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const wchar_t* us = charmap_search(&cm, im->buf);
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#ifdef IM_DEBUG
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wprintf(L" [%8ls] [%8ls] %2d %2d\n", im->s, im->buf, wcslen(im->s), wcslen(im->buf));
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#endif
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/* Match was found? */
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if(us && wcslen(us)) {
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#ifdef IM_DEBUG
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wprintf(L" 1\n");
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#endif
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wcscat(im->s, us);
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/* Final match */
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if(cm.match_is_final) {
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wcs_lshift(im->buf, cm.match_count);
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cm.match_count = 0;
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cm.match_is_final = 0;
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}
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/* May need to be overwritten next time */
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else {
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im->redraw += wcslen(us);
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break;
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}
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}
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/* No match, but more data is in the buffer */
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else if(wcslen(im->buf) > 0) {
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/* If the input character has no state, it's its own state */
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if(cm.match_count == 0) {
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#ifdef IM_DEBUG
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wprintf(L" 2a\n");
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#endif
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wcsncat(im->s, im->buf, 1);
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wcs_lshift(im->buf, 1);
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cm.match_is_final = 0;
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}
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/* If the matched characters didn't consume all, it's own state */
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else if((size_t)cm.match_count != wcslen(im->buf)) {
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#ifdef IM_DEBUG
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wprintf(L" 2b (%2d)\n", cm.match_count);
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#endif
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wcsncat(im->s, im->buf, 1);
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wcs_lshift(im->buf, 1);
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cm.match_is_final = 0;
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}
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/* Otherwise it's just a part of a future input */
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else {
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#ifdef IM_DEBUG
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wprintf(L" 2c (%2d)\n", cm.match_count);
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#endif
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wcscat(im->s, im->buf);
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cm.match_is_final = 0;
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im->redraw += wcslen(im->buf);
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break;
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}
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}
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/* No match and no more data in the buffer */
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else {
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#ifdef IM_DEBUG
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wprintf(L" 3\n");
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#endif
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break;
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}
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/* Is this the end? */
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if(cm.match_is_final) break;
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}
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}
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}
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return im->redraw;
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}
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/**
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* Thai IM.
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@ -1392,6 +1580,7 @@ void im_init(IM_DATA* im, int lang)
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im_event_fns[LANG_JA] = &im_event_ja;
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im_event_fns[LANG_KO] = &im_event_ko;
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im_event_fns[LANG_TH] = &im_event_th;
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im_event_fns[LANG_ZH_TW] = &im_event_zh_tw;
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im_initialized = 1;
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}
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