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chewingio.c
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chewingio.c
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/**
* chewingio.c
*
* Copyright (c) 1999, 2000, 2001
* Lu-chuan Kung and Kang-pen Chen.
* All rights reserved.
*
* Copyright (c) 2004-2008, 2010-2014
* libchewing Core Team. See ChangeLog for details.
*
* See the file "COPYING" for information on usage and redistribution
* of this file.
*/
/**
* @file chewingio.c
* @brief Implement basic I/O routines for Chewing manipulation.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <assert.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <stdio.h>
#include "chewing-utf8-util.h"
#include "global.h"
#include "bopomofo-private.h"
#include "chewingutil.h"
#include "userphrase-private.h"
#include "choice-private.h"
#include "dict-private.h"
#include "tree-private.h"
#include "pinyin-private.h"
#include "private.h"
#include "chewingio.h"
#include "mod_aux.h"
#include "global-private.h"
#include "plat_path.h"
#include "chewing-private.h"
#include "key2pho-private.h"
#if WITH_SQLITE3
# include "chewing-sql.h"
#else
# include "hash-private.h"
#endif
const char *const kb_type_str[] = {
"KB_DEFAULT",
"KB_HSU",
"KB_IBM",
"KB_GIN_YIEH",
"KB_ET",
"KB_ET26",
"KB_DVORAK",
"KB_DVORAK_HSU",
"KB_DACHEN_CP26",
"KB_HANYU_PINYIN",
"KB_THL_PINYIN",
"KB_MPS2_PINYIN"
};
const char *const DICT_FILES[] = {
DICT_FILE,
PHONE_TREE_FILE,
NULL,
};
const char *const SYMBOL_TABLE_FILES[] = {
SYMBOL_TABLE_FILE,
NULL,
};
const char *const EASY_SYMBOL_FILES[] = {
SOFTKBD_TABLE_FILE,
NULL,
};
const char *const PINYIN_FILES[] = {
PINYIN_TAB_NAME,
NULL,
};
CHEWING_API int chewing_KBStr2Num(const char str[])
{
int i;
STATIC_ASSERT(KB_TYPE_NUM == ARRAY_SIZE(kb_type_str));
for (i = 0; i < KB_TYPE_NUM; i++) {
if (!strcmp(str, kb_type_str[i]))
return i;
}
return KB_DEFAULT;
}
static void chooseCandidate(ChewingContext *ctx, int toSelect, int key_buf_cursor)
{
ChewingData *pgdata = ctx->data;
if (toSelect) {
if (!pgdata->bSelect) {
ChoiceInitAvail(pgdata);
} else {
if (ChoiceHasNextAvail(pgdata))
ChoiceNextAvail(pgdata);
else /* rollover */
ChoiceFirstAvail(pgdata);
}
} else if (pgdata->symbolKeyBuf[key_buf_cursor]) {
/* Open Symbol Choice List */
if (pgdata->choiceInfo.isSymbol == WORD_CHOICE) {
OpenSymbolChoice(pgdata);
}
/**
* If these's only one candidate list available, ChoiceFirstAvail
* will re-open the list, namely turn back to the firt page.
* However, it doesn't work for symbols, therefore we
* set the page number to 0 directly.
*/
else if (pgdata->bSelect) {
pgdata->choiceInfo.pageNo = 0;
}
} else {
/*
* The cursor position is not word, nor symbol. The only
* possible case is that user just uses ` to open symbol
* selection. In this case, when chooseCandidate is called,
* libchewing needs to reset pageNo to 0 to do rollover.
*/
if (pgdata->bSelect) {
pgdata->choiceInfo.pageNo = 0;
}
}
}
static void NullLogger(void *data UNUSED, int level UNUSED, const char *fmt UNUSED, ...)
{
}
static ChewingData *allocate_ChewingData(void (*logger) (void *data, int level, const char *fmt, ...), void *loggerdata)
{
static const int DEFAULT_SELKEY[] = { '1', '2', '3', '4', '5', '6', '7', '8', '9', '0' };
ChewingData *data = ALC(ChewingData, 1);
if (data) {
data->config.candPerPage = MAX_SELKEY;
data->config.maxChiSymbolLen = MAX_CHI_SYMBOL_LEN;
data->logger = logger;
data->loggerData = loggerdata;
memcpy(data->config.selKey, DEFAULT_SELKEY, sizeof(data->config.selKey));
}
return data;
}
CHEWING_API ChewingContext *chewing_new2(const char *syspath,
const char *userpath,
void (*logger) (void *data, int level, const char *fmt, ...), void *loggerdata)
{
ChewingContext *ctx;
ChewingData *pgdata;
int ret;
char search_path[PATH_MAX];
char path[PATH_MAX];
char *userphrase_path = NULL;
if (!logger)
logger = NullLogger;
ctx = ALC(ChewingContext, 1);
if (!ctx)
goto error;
ctx->output = ALC(ChewingOutput, 1);
if (!ctx->output)
goto error;
pgdata = allocate_ChewingData(logger, loggerdata);
if (!pgdata)
goto error;
ctx->data = pgdata;
LOG_API("syspath = %d, userpath = %d", syspath, userpath);
chewing_Reset(ctx);
if (syspath) {
strncpy(search_path, syspath, sizeof(search_path));
} else {
ret = get_search_path(search_path, sizeof(search_path));
if (ret) {
LOG_ERROR("get_search_path returns %d", ret);
goto error;
}
}
LOG_VERBOSE("search_path is %s", search_path);
ret = find_path_by_files(search_path, DICT_FILES, path, sizeof(path));
if (ret) {
LOG_ERROR("find_path_by_files returns %d", ret);
goto error;
}
ret = InitDict(ctx->data, path);
if (ret) {
LOG_ERROR("InitDict returns %d", ret);
goto error;
}
ret = InitTree(ctx->data, path);
if (ret) {
LOG_ERROR("InitTree returns %d", ret);
goto error;
}
if (userpath) {
userphrase_path = strdup(userpath);
} else {
userphrase_path = GetDefaultUserPhrasePath(ctx->data);
}
if (!userphrase_path) {
LOG_ERROR("GetUserPhraseStoregePath returns %#p", path);
goto error;
}
ret = InitUserphrase(ctx->data, userphrase_path);
free(userphrase_path);
if (ret) {
LOG_ERROR("InitSql returns %d", ret);
goto error;
}
ctx->cand_no = 0;
ret = find_path_by_files(search_path, SYMBOL_TABLE_FILES, path, sizeof(path));
if (ret) {
LOG_ERROR("find_path_by_files returns %d", ret);
goto error;
}
ret = InitSymbolTable(ctx->data, path);
if (ret) {
LOG_ERROR("InitSymbolTable returns %d", ret);
goto error;
}
ret = find_path_by_files(search_path, EASY_SYMBOL_FILES, path, sizeof(path));
if (ret) {
LOG_ERROR("find_path_by_files returns %d", ret);
goto error;
}
ret = InitEasySymbolInput(ctx->data, path);
if (ret) {
LOG_ERROR("InitEasySymbolInput returns %d", ret);
goto error;
}
ret = find_path_by_files(search_path, PINYIN_FILES, path, sizeof(path));
if (ret) {
LOG_ERROR("find_path_by_files returns %d", ret);
goto error;
}
ret = InitPinyin(ctx->data, path);
if (!ret) {
LOG_ERROR("InitPinyin returns %d", ret);
goto error;
}
return ctx;
error:
chewing_delete(ctx);
return NULL;
}
CHEWING_API ChewingContext *chewing_new()
{
return chewing_new2(NULL, NULL, NULL, NULL);
}
CHEWING_API int chewing_Reset(ChewingContext *ctx)
{
ChewingData *pgdata;
ChewingStaticData static_data;
ChewingConfigData old_config;
void (*logger) (void *data, int level, const char *fmt, ...);
void *loggerData;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
LOG_API("");
/* Backup old config and restore it after clearing pgdata structure. */
old_config = pgdata->config;
static_data = pgdata->static_data;
logger = pgdata->logger;
loggerData = pgdata->loggerData;
memset(pgdata, 0, sizeof(ChewingData));
pgdata->config = old_config;
pgdata->static_data = static_data;
pgdata->logger = logger;
pgdata->loggerData = loggerData;
/* bopomofoData */
memset(&(pgdata->bopomofoData), 0, sizeof(BopomofoData));
/* choiceInfo */
memset(&(pgdata->choiceInfo), 0, sizeof(ChoiceInfo));
pgdata->chiSymbolCursor = 0;
pgdata->chiSymbolBufLen = 0;
pgdata->nPhoneSeq = 0;
memset(pgdata->bUserArrCnnct, 0, sizeof(int) * (MAX_PHONE_SEQ_LEN + 1));
memset(pgdata->bUserArrBrkpt, 0, sizeof(int) * (MAX_PHONE_SEQ_LEN + 1));
pgdata->bChiSym = CHINESE_MODE;
pgdata->bFullShape = HALFSHAPE_MODE;
pgdata->bSelect = 0;
pgdata->nSelect = 0;
pgdata->PointStart = -1;
pgdata->PointEnd = 0;
pgdata->phrOut.nNumCut = 0;
return 0;
}
CHEWING_API int chewing_set_KBType(ChewingContext *ctx, int kbtype)
{
ChewingData *pgdata;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
LOG_API("kbtype = %d", kbtype);
if (kbtype < KB_TYPE_NUM && kbtype >= 0) {
ctx->data->bopomofoData.kbtype = kbtype;
return 0;
} else {
ctx->data->bopomofoData.kbtype = KB_DEFAULT;
return -1;
}
}
CHEWING_API int chewing_get_KBType(const ChewingContext *ctx)
{
const ChewingData *pgdata;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
LOG_API("kbtype = %d", ctx->data->bopomofoData.kbtype);
return ctx->data->bopomofoData.kbtype;
}
CHEWING_API char *chewing_get_KBString(const ChewingContext *ctx)
{
const ChewingData *pgdata;
if (!ctx) {
return strdup("");
}
pgdata = ctx->data;
LOG_API("KBString = %s", kb_type_str[ctx->data->bopomofoData.kbtype]);
return strdup(kb_type_str[ctx->data->bopomofoData.kbtype]);
}
CHEWING_API void chewing_delete(ChewingContext *ctx)
{
if (ctx) {
if (ctx->data) {
TerminatePinyin(ctx->data);
TerminateEasySymbolTable(ctx->data);
TerminateSymbolTable(ctx->data);
TerminateUserphrase(ctx->data);
TerminateTree(ctx->data);
TerminateDict(ctx->data);
free(ctx->data);
}
if (ctx->output)
free(ctx->output);
free(ctx);
}
return;
}
CHEWING_API void chewing_free(void *p)
{
free(p);
}
CHEWING_API void chewing_set_candPerPage(ChewingContext *ctx, int n)
{
ChewingData *pgdata;
if (!ctx) {
return;
}
pgdata = ctx->data;
LOG_API("n = %d", n);
if (MIN_SELKEY <= n && n <= MAX_SELKEY)
ctx->data->config.candPerPage = n;
}
CHEWING_API int chewing_get_candPerPage(const ChewingContext *ctx)
{
const ChewingData *pgdata;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
LOG_API("candPerPage = %d", ctx->data->config.candPerPage);
return ctx->data->config.candPerPage;
}
CHEWING_API void chewing_set_maxChiSymbolLen(ChewingContext *ctx, int n)
{
ChewingData *pgdata;
if (!ctx) {
return;
}
pgdata = ctx->data;
LOG_API("n = %d", n);
if (MIN_CHI_SYMBOL_LEN <= n && n <= MAX_CHI_SYMBOL_LEN)
ctx->data->config.maxChiSymbolLen = n;
}
CHEWING_API int chewing_get_maxChiSymbolLen(const ChewingContext *ctx)
{
const ChewingData *pgdata;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
LOG_API("maxChiSymbolLen = %d", ctx->data->config.maxChiSymbolLen);
return ctx->data->config.maxChiSymbolLen;
}
CHEWING_API void chewing_set_selKey(ChewingContext *ctx, const int *selkeys, int len)
{
ChewingData *pgdata;
if (!ctx) {
return;
}
pgdata = ctx->data;
LOG_API("");
if (!selkeys) {
return;
}
if (MIN_SELKEY <= len && len <= MAX_SELKEY) {
memset(ctx->data->config.selKey, 0, sizeof(ctx->data->config.selKey));
memcpy(ctx->data->config.selKey, selkeys, sizeof(*selkeys) * len);
}
}
CHEWING_API int *chewing_get_selKey(const ChewingContext *ctx)
{
const ChewingData *pgdata;
int *selkeys;
if (!ctx) {
return NULL;
}
pgdata = ctx->data;
LOG_API("");
selkeys = ALC(int, MAX_SELKEY);
if (selkeys) {
memcpy(selkeys, ctx->data->config.selKey, sizeof(*selkeys) * MAX_SELKEY);
}
return selkeys;
}
CHEWING_API void chewing_set_addPhraseDirection(ChewingContext *ctx, int direction)
{
ChewingData *pgdata;
if (!ctx) {
return;
}
pgdata = ctx->data;
LOG_API("direction = %d", direction);
if (direction == 0 || direction == 1)
ctx->data->config.bAddPhraseForward = direction;
}
CHEWING_API int chewing_get_addPhraseDirection(const ChewingContext *ctx)
{
const ChewingData *pgdata;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
LOG_API("bAddPhraseForward = %d", ctx->data->config.bAddPhraseForward);
return ctx->data->config.bAddPhraseForward;
}
CHEWING_API void chewing_set_spaceAsSelection(ChewingContext *ctx, int mode)
{
ChewingData *pgdata;
if (!ctx) {
return;
}
pgdata = ctx->data;
LOG_API("mode = %d", mode);
if (mode == 0 || mode == 1)
ctx->data->config.bSpaceAsSelection = mode;
}
CHEWING_API int chewing_get_spaceAsSelection(const ChewingContext *ctx)
{
const ChewingData *pgdata;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
LOG_API("bSpaceAsSelection = %d", ctx->data->config.bSpaceAsSelection);
return ctx->data->config.bSpaceAsSelection;
}
CHEWING_API void chewing_set_escCleanAllBuf(ChewingContext *ctx, int mode)
{
ChewingData *pgdata;
if (!ctx) {
return;
}
pgdata = ctx->data;
LOG_API("mode = %d", mode);
if (mode == 0 || mode == 1)
ctx->data->config.bEscCleanAllBuf = mode;
}
CHEWING_API int chewing_get_escCleanAllBuf(const ChewingContext *ctx)
{
const ChewingData *pgdata;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
LOG_API("bEscCleanAllBuf = %d", ctx->data->config.bEscCleanAllBuf);
return ctx->data->config.bEscCleanAllBuf;
}
CHEWING_API void chewing_set_autoShiftCur(ChewingContext *ctx, int mode)
{
ChewingData *pgdata;
if (!ctx) {
return;
}
pgdata = ctx->data;
LOG_API("mode = %d", mode);
if (mode == 0 || mode == 1)
ctx->data->config.bAutoShiftCur = mode;
}
CHEWING_API int chewing_get_autoShiftCur(const ChewingContext *ctx)
{
const ChewingData *pgdata;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
LOG_API("bAutoShiftCur = %d", ctx->data->config.bAutoShiftCur);
return ctx->data->config.bAutoShiftCur;
}
CHEWING_API void chewing_set_easySymbolInput(ChewingContext *ctx, int mode)
{
ChewingData *pgdata;
if (!ctx) {
return;
}
pgdata = ctx->data;
LOG_API("mode = %d", mode);
if (mode == 0 || mode == 1)
ctx->data->config.bEasySymbolInput = mode;
}
CHEWING_API int chewing_get_easySymbolInput(const ChewingContext *ctx)
{
const ChewingData *pgdata;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
LOG_API("bEasySymbolInput = %d", ctx->data->config.bEasySymbolInput);
return ctx->data->config.bEasySymbolInput;
}
CHEWING_API void chewing_set_phraseChoiceRearward(ChewingContext *ctx, int mode)
{
ChewingData *pgdata;
if (!ctx) {
return;
}
pgdata = ctx->data;
LOG_API("mode = %d", mode);
if (mode == 0 || mode == 1)
ctx->data->config.bPhraseChoiceRearward = mode;
}
CHEWING_API int chewing_get_phraseChoiceRearward(const ChewingContext *ctx)
{
const ChewingData *pgdata;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
LOG_API("bPhraseChoiceRearward = %d", ctx->data->config.bPhraseChoiceRearward);
return ctx->data->config.bPhraseChoiceRearward;
}
CHEWING_API void chewing_set_ChiEngMode(ChewingContext *ctx, int mode)
{
ChewingData *pgdata;
if (!ctx) {
return;
}
pgdata = ctx->data;
LOG_API("mode = %d", mode);
if (mode == CHINESE_MODE || mode == SYMBOL_MODE) {
// remove all data inside buffer as switching mode.
BopomofoRemoveAll(&(ctx->data->bopomofoData));
MakeOutputWithRtn(ctx->output, ctx->data, KEYSTROKE_ABSORB);
ctx->data->bChiSym = mode;
}
}
CHEWING_API int chewing_get_ChiEngMode(const ChewingContext *ctx)
{
const ChewingData *pgdata;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
LOG_API("bChiSym = %d", ctx->data->bChiSym);
return ctx->data->bChiSym;
}
CHEWING_API void chewing_set_ShapeMode(ChewingContext *ctx, int mode)
{
ChewingData *pgdata;
if (!ctx) {
return;
}
pgdata = ctx->data;
LOG_API("mode = %d", mode);
if (mode == HALFSHAPE_MODE || mode == FULLSHAPE_MODE)
ctx->data->bFullShape = mode;
}
CHEWING_API int chewing_get_ShapeMode(const ChewingContext *ctx)
{
const ChewingData *pgdata;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
LOG_API("ctx->data->bFullShape = %d", ctx->data->bFullShape);
return ctx->data->bFullShape;
}
static void CheckAndResetRange(ChewingData *pgdata)
{
if (pgdata->PointStart > -1) {
pgdata->PointStart = -1;
pgdata->PointEnd = 0;
}
}
static int SelectCandidate(ChewingData *pgdata, int num)
{
assert(pgdata);
assert(pgdata->choiceInfo.pageNo >= 0);
if (0 <= num && num < pgdata->choiceInfo.nTotalChoice) {
if (pgdata->choiceInfo.isSymbol != WORD_CHOICE) {
SymbolChoice(pgdata, num);
} else {
/* change the select interval & selectStr & nSelect */
AddSelect(pgdata, num);
/* second, call choice module */
ChoiceSelect(pgdata, num);
/* automatically shift the cursor to next phrase */
if (pgdata->config.bAutoShiftCur != 0 &&
/* if cursor at end of string, do not shift the cursor. */
pgdata->chiSymbolCursor < pgdata->chiSymbolBufLen) {
if (pgdata->config.bPhraseChoiceRearward) {
++pgdata->chiSymbolCursor;
} else {
pgdata->chiSymbolCursor += pgdata->availInfo.avail[pgdata->availInfo.currentAvail].len;
}
}
}
return 0;
}
return -1;
}
static void DoSelect(ChewingData *pgdata, int num)
{
assert(pgdata->choiceInfo.pageNo >= 0);
if (num >= 0) {
num += pgdata->choiceInfo.pageNo * pgdata->choiceInfo.nChoicePerPage;
SelectCandidate(pgdata, num);
}
}
CHEWING_API int chewing_handle_Space(ChewingContext *ctx)
{
ChewingData *pgdata;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
LOG_API("");
/*
* Use chewing_handle_Default( ctx, ' ' ) to handle space when:
* - "space as selection" mode is disable
* - mode is not CHINESE_MODE
* - has incompleted bopomofo (space is needed to complete it)
*/
if (!pgdata->config.bSpaceAsSelection || pgdata->bChiSym != CHINESE_MODE || BopomofoIsEntering(&ctx->data->bopomofoData)) {
return chewing_handle_Default(ctx, ' ');
}
CheckAndResetRange(pgdata);
/*
* space = right when the follogin conditions are true
* 1. In select mode
* 2. The candidate page is not last page
*
* Otherwise, space = down
*/
if (pgdata->bSelect && ctx->output->pci->pageNo < ctx->output->pci->nPage - 1) {
return chewing_handle_Right(ctx);
} else {
return chewing_handle_Down(ctx);
}
return 0;
}
CHEWING_API int chewing_handle_Esc(ChewingContext *ctx)
{
ChewingData *pgdata;
ChewingOutput *pgo;
int keystrokeRtn = KEYSTROKE_ABSORB;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
pgo = ctx->output;
LOG_API("");
CheckAndResetRange(pgdata);
if (!ChewingIsEntering(pgdata)) {
keystrokeRtn = KEYSTROKE_IGNORE;
} else if (pgdata->bSelect) {
ChoiceEndChoice(pgdata);
} else if (BopomofoIsEntering(&(pgdata->bopomofoData))) {
BopomofoRemoveAll(&(pgdata->bopomofoData));
} else if (pgdata->config.bEscCleanAllBuf) {
CleanAllBuf(pgdata);
pgo->commitBufLen = pgdata->chiSymbolBufLen;
}
MakeOutputWithRtn(pgo, pgdata, keystrokeRtn);
return 0;
}
CHEWING_API int chewing_handle_Enter(ChewingContext *ctx)
{
ChewingData *pgdata;
ChewingOutput *pgo;
int nCommitStr;
int keystrokeRtn = KEYSTROKE_ABSORB;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
pgo = ctx->output;
LOG_API("");
nCommitStr = pgdata->chiSymbolBufLen;
if (!ChewingIsEntering(pgdata)) {
keystrokeRtn = KEYSTROKE_IGNORE;
} else if (pgdata->bSelect) {
keystrokeRtn = KEYSTROKE_ABSORB | KEYSTROKE_BELL;
} else if (pgdata->PointStart > -1) {
int buf = pgdata->chiSymbolCursor;
int key;
if (pgdata->PointEnd > 1) {
if (!pgdata->config.bAddPhraseForward) {
pgdata->chiSymbolCursor = pgdata->PointStart;
key = '0' + pgdata->PointEnd;
} else {
pgdata->chiSymbolCursor = pgdata->PointStart + pgdata->PointEnd;
key = '0' + pgdata->PointEnd;
}
chewing_handle_CtrlNum(ctx, key);
pgdata->chiSymbolCursor = buf;
} else if (pgdata->PointEnd < 1) {
if (pgdata->config.bAddPhraseForward)
pgdata->chiSymbolCursor = buf - pgdata->PointEnd;
key = '0' - pgdata->PointEnd;
chewing_handle_CtrlNum(ctx, key);
pgdata->chiSymbolCursor = buf;
}
pgdata->PointStart = -1;
pgdata->PointEnd = 0;
} else {
keystrokeRtn = KEYSTROKE_COMMIT;
WriteChiSymbolToCommitBuf(pgdata, pgo, nCommitStr);
AutoLearnPhrase(pgdata);
CleanAllBuf(pgdata);
pgo->commitBufLen = nCommitStr;
}
MakeOutputWithRtn(pgo, pgdata, keystrokeRtn);
return 0;
}
CHEWING_API int chewing_handle_Del(ChewingContext *ctx)
{
ChewingData *pgdata;
ChewingOutput *pgo;
int keystrokeRtn = KEYSTROKE_ABSORB;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
pgo = ctx->output;
LOG_API("");
CheckAndResetRange(pgdata);
if (!ChewingIsEntering(pgdata)) {
keystrokeRtn = KEYSTROKE_IGNORE;
}
if (!pgdata->bSelect) {
if (!BopomofoIsEntering(&(pgdata->bopomofoData)) && pgdata->chiSymbolCursor < pgdata->chiSymbolBufLen) {
ChewingKillChar(pgdata, pgdata->chiSymbolCursor, NONDECREASE_CURSOR);
}
CallPhrasing(pgdata, 0);
}
MakeOutputWithRtn(pgo, pgdata, keystrokeRtn);
return 0;
}
CHEWING_API int chewing_handle_Backspace(ChewingContext *ctx)
{
ChewingData *pgdata;
ChewingOutput *pgo;
int keystrokeRtn = KEYSTROKE_ABSORB;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
pgo = ctx->output;
LOG_API("");
pgdata = ctx->data;
pgo = ctx->output;
CheckAndResetRange(pgdata);
if (!ChewingIsEntering(pgdata)) {
keystrokeRtn = KEYSTROKE_IGNORE;
}
if (!pgdata->bSelect) {
if (BopomofoIsEntering(&(pgdata->bopomofoData))) {
BopomofoRemoveLast(&(pgdata->bopomofoData));
} else if (pgdata->chiSymbolCursor > 0) {
ChewingKillChar(pgdata, pgdata->chiSymbolCursor - 1, DECREASE_CURSOR);
}
CallPhrasing(pgdata, 0);
} else if (pgdata->bSelect) {
chewing_cand_close(ctx);
}
MakeOutputWithRtn(pgo, pgdata, keystrokeRtn);
return 0;
}
CHEWING_API int chewing_handle_Up(ChewingContext *ctx)
{
ChewingData *pgdata;
ChewingOutput *pgo;
int keystrokeRtn = KEYSTROKE_ABSORB;
int key_buf_cursor;
if (!ctx) {
return -1;
}
pgdata = ctx->data;
pgo = ctx->output;
LOG_API("");