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#include "uchewing.h"
#include <imf/widget.h>
#include <stdlib.h>
#include <stdint.h>
#include <sstream>
#include <iostream>
#include <string>
#include <iconv.h>
#include <string.h>
using namespace std;
static int selKey_define[ 11 ] = {'1','2','3','4','5','6','7','8','9','0',0}; /* Default */
vector<uint32_t> _str_to_utf32( char* input, const char* enc ){
vector<uint32_t> result;
size_t inbuf_len = strlen( input );
size_t outbuf_len = 256;
char output[outbuf_len];
char* inbuf = (char*)input;
char* outbuf = (char*)output;
size_t inbytesleft = sizeof(char) * inbuf_len;
size_t outbytesleft = sizeof(char) * outbuf_len;
iconv_t conv_codec = iconv_open( "UTF-32", enc );
iconv( conv_codec, &inbuf, &inbytesleft, &outbuf, &outbytesleft );
iconv_close( conv_codec );
// 計算字數, 一個 UTF-32 的字有 4 bytes.
int count = ( outbuf_len - outbytesleft ) / 4;
// The first byte of UTF-32 word( == output[0]) is byte-order header, so to ignore it!
for( int i=1; i< count; i++) {
result.push_back( ((uint32_t*)output)[i] );
}
return result;
}
char* _utf32_to_str( vector<uint32_t> input, const char* enc ){
size_t inbuf_len = input.size()*4;
size_t outbuf_len = inbuf_len / 4 * 8;
char tmp[inbuf_len];
char output[outbuf_len];
for( int i=0; i< input.size(); i++ ){
((uint32_t*)tmp)[i] = input[i];
}
char* inbuf = (char*)tmp;
char* outbuf = (char*)output;
size_t inbytesleft = inbuf_len;
size_t outbytesleft = outbuf_len;
iconv_t conv_codec = iconv_open( enc, "UTF-32" );
iconv( conv_codec, &inbuf, &inbytesleft, &outbuf, &outbytesleft );
iconv_close( conv_codec );
output[outbuf_len-outbytesleft]=0;
string result( output );
return const_cast<char*>(result.c_str() );
}
Imf* UcimfChewingHandler::_instance = 0;
Imf* UcimfChewingHandler::getInstance()
{
if( _instance == 0 )
_instance = new UcimfChewingHandler;
return _instance;
}
UcimfChewingHandler::UcimfChewingHandler()
{
/* Initialize libchewing */
/* for the sake of testing, we should not change existing hash data */
char *prefix = const_cast<char*>(CHEWING_DATA_PREFIX);
chewing_Init( prefix, NULL );
/* Request handle to ChewingContext */
ctx = chewing_new();
/* Set keyboard type */
chewing_set_KBType( ctx, chewing_KBStr2Num( const_cast<char*>("KB_DEFAULT") ) );
/* Fill configuration values */
chewing_set_candPerPage( ctx, 9 );
chewing_set_maxChiSymbolLen( ctx, 16 );
chewing_set_addPhraseDirection( ctx, 1 );
chewing_set_selKey( ctx, selKey_define, 10 );
chewing_set_spaceAsSelection( ctx, 1 );
chewing_set_autoShiftCur( ctx, 1 );
chewing_set_phraseChoiceRearward( ctx, 1 );
}
UcimfChewingHandler::~UcimfChewingHandler()
{
/* Free Chewing IM handle */
chewing_delete( ctx );
/* Termate Chewing services */
chewing_Terminate();
}
string UcimfChewingHandler::commit_buf="";
void UcimfChewingHandler::refresh()
{
Status *stts = Status::getInstance();
stts->set_imf_status( const_cast<char*>("Chewing"), const_cast<char*>("新酷音"), const_cast<char*>(""));
}
string UcimfChewingHandler::process_input( const string& buf )
{
string result("");
int buf_len = buf.size();
if( buf_len == 1 ) {
switch( buf[0] ){
case 9: chewing_handle_Tab( ctx ); break;
case 13: chewing_handle_Enter( ctx ); break;
case 27: chewing_handle_Esc( ctx ); break;
case 32: chewing_handle_Space( ctx ); break;
case 126: chewing_handle_Del( ctx ); break;
case 127: chewing_handle_Backspace( ctx ); break;
default: {
chewing_handle_Default( ctx, buf[0] );
break;
}
}
}
else if( buf_len == 3 && buf[0]==27 && buf[1]==91 ) {
switch( buf[2] )
{
case 65: chewing_handle_Up( ctx ); break;
case 66: chewing_handle_Down( ctx ); break;
case 67: chewing_handle_Right( ctx ); break;
case 68: chewing_handle_Left( ctx ); break;
default:
break;
}
}
else if( buf_len == 4 && buf[0]==27 && buf[1]==91 && buf[4]==126 ) {
switch( buf[3] )
{
case 49: chewing_handle_Home( ctx ); break;
case 52: chewing_handle_End( ctx ); break;
case 53: break; // PAGE_UP
case 54: break; // PAGE_DOWN
default:
break;
}
}
else {
; // do nothing
}
int *prdt_count;
string s; stringstream prdt_pre(s);
char *prdt_text = chewing_zuin_String( ctx, prdt_count);
char *prdt_text2 = chewing_buffer_String( ctx );
vector<uint32_t> utf32_prdt_text = _str_to_utf32( prdt_text, "UTF-8" );
vector<uint32_t> utf32_prdt_text2 = _str_to_utf32( prdt_text2,"UTF-8" );
// 取得虛擬遊標的位置
int cursor = chewing_cursor_Current( ctx );
// 計算斷詞的區間
chewing_interval_Enumerate( ctx );
while ( chewing_interval_hasNext( ctx ) ) {
IntervalType it;
chewing_interval_Get( ctx, &it );
prdt_pre << "[" ;
for( int i=it.from; i<it.to; i++ ){
if( cursor == i ){
prdt_pre << "." ;
}
if( i >=0 && i < utf32_prdt_text2.size() ){
vector<uint32_t> utf32_word;
utf32_word.push_back( utf32_prdt_text2[i] );
prdt_pre << _utf32_to_str( utf32_word, "UTF-8" );
}
//prdt_pre << it.from << "-" << it.to ;
if( i+1 == cursor && cursor == utf32_prdt_text2.size() ){
prdt_pre << "." ;
}
}
prdt_pre << "]" ;
}
Preedit *prdt = Preedit::getInstance();
prdt->clear();
prdt->append( const_cast<char*>(prdt_pre.str().c_str()) );
prdt->append( prdt_text );
prdt->render();
LookupChoice *lkc = LookupChoice::getInstance();
lkc->clear();
{
int i = 1;
int currentPageNo;
char str[ 20 ];
char *cand_string;
chewing_cand_Enumerate( ctx );
while ( chewing_cand_hasNext( ctx ) ) {
if ( i > chewing_cand_ChoicePerPage( ctx ) ) {
break;
}
cand_string = chewing_cand_String( ctx );
string s2; stringstream lkc_pre(s2);
lkc_pre << i << ". " ;
lkc->append_next( const_cast<char*>(lkc_pre.str().c_str()) );
lkc->append( cand_string );
free( cand_string );
i++;
}
}
lkc->render();
if ( chewing_commit_Check( ctx ) ) {
char *s;
s = chewing_commit_String( ctx );
commit_buf = s;
free( s );
}
if( commit_buf.size() > 0 )
{
result = commit_buf;
commit_buf.clear();
}
return result;
}
Imf* createImf() {
return UcimfChewingHandler::getInstance();
}
void destroyImf( Imf* imf ){
delete imf;
}
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