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See the 18*cdf0e10cSrcweir * GNU Lesser General Public License version 3 for more details 19*cdf0e10cSrcweir * (a copy is included in the LICENSE file that accompanied this code). 20*cdf0e10cSrcweir * 21*cdf0e10cSrcweir * You should have received a copy of the GNU Lesser General Public License 22*cdf0e10cSrcweir * version 3 along with OpenOffice.org. If not, see 23*cdf0e10cSrcweir * <http://www.openoffice.org/license.html> 24*cdf0e10cSrcweir * for a copy of the LGPLv3 License. 25*cdf0e10cSrcweir * 26*cdf0e10cSrcweir ************************************************************************/ 27*cdf0e10cSrcweir 28*cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove 29*cdf0e10cSrcweir #include "precompiled_i18npool.hxx" 30*cdf0e10cSrcweir #include <assert.h> 31*cdf0e10cSrcweir #include <textconversion.hxx> 32*cdf0e10cSrcweir #include <com/sun/star/i18n/TextConversionType.hpp> 33*cdf0e10cSrcweir #include <com/sun/star/i18n/TextConversionOption.hpp> 34*cdf0e10cSrcweir #include <com/sun/star/linguistic2/ConversionDirection.hpp> 35*cdf0e10cSrcweir #include <com/sun/star/linguistic2/ConversionDictionaryType.hpp> 36*cdf0e10cSrcweir #include <rtl/ustrbuf.hxx> 37*cdf0e10cSrcweir #include <i18nutil/x_rtl_ustring.h> 38*cdf0e10cSrcweir #include <unicode/uchar.h> 39*cdf0e10cSrcweir 40*cdf0e10cSrcweir using namespace com::sun::star::lang; 41*cdf0e10cSrcweir using namespace com::sun::star::i18n; 42*cdf0e10cSrcweir using namespace com::sun::star::linguistic2; 43*cdf0e10cSrcweir using namespace com::sun::star::uno; 44*cdf0e10cSrcweir using namespace rtl; 45*cdf0e10cSrcweir 46*cdf0e10cSrcweir namespace com { namespace sun { namespace star { namespace i18n { 47*cdf0e10cSrcweir 48*cdf0e10cSrcweir #define SCRIPT_OTHERS 0 49*cdf0e10cSrcweir #define SCRIPT_HANJA 1 50*cdf0e10cSrcweir #define SCRIPT_HANGUL 2 51*cdf0e10cSrcweir 52*cdf0e10cSrcweir TextConversion_ko::TextConversion_ko( const Reference < XMultiServiceFactory >& xMSF ) 53*cdf0e10cSrcweir { 54*cdf0e10cSrcweir Reference < XInterface > xI; 55*cdf0e10cSrcweir 56*cdf0e10cSrcweir xI = xMSF->createInstance( 57*cdf0e10cSrcweir OUString::createFromAscii("com.sun.star.i18n.ConversionDictionary_ko")); 58*cdf0e10cSrcweir 59*cdf0e10cSrcweir if ( xI.is() ) 60*cdf0e10cSrcweir xI->queryInterface( getCppuType((const Reference< XConversionDictionary>*)0) ) >>= xCD; 61*cdf0e10cSrcweir 62*cdf0e10cSrcweir xI = xMSF->createInstance( 63*cdf0e10cSrcweir OUString::createFromAscii( "com.sun.star.linguistic2.ConversionDictionaryList" )); 64*cdf0e10cSrcweir 65*cdf0e10cSrcweir if ( xI.is() ) 66*cdf0e10cSrcweir xI->queryInterface( getCppuType((const Reference< XConversionDictionaryList>*)0) ) >>= xCDL; 67*cdf0e10cSrcweir 68*cdf0e10cSrcweir maxLeftLength = maxRightLength = 1; 69*cdf0e10cSrcweir 70*cdf0e10cSrcweir // get maximum length of word in dictionary 71*cdf0e10cSrcweir if (xCDL.is()) { 72*cdf0e10cSrcweir Locale loc(OUString::createFromAscii("ko"), 73*cdf0e10cSrcweir OUString::createFromAscii("KR"), 74*cdf0e10cSrcweir OUString()); 75*cdf0e10cSrcweir maxLeftLength = xCDL->queryMaxCharCount(loc, 76*cdf0e10cSrcweir ConversionDictionaryType::HANGUL_HANJA, 77*cdf0e10cSrcweir ConversionDirection_FROM_LEFT); 78*cdf0e10cSrcweir maxRightLength = xCDL->queryMaxCharCount(loc, 79*cdf0e10cSrcweir ConversionDictionaryType::HANGUL_HANJA, 80*cdf0e10cSrcweir ConversionDirection_FROM_RIGHT); 81*cdf0e10cSrcweir if (xCD.is()) { 82*cdf0e10cSrcweir sal_Int32 tmp = xCD->getMaxCharCount(ConversionDirection_FROM_LEFT); 83*cdf0e10cSrcweir if (tmp > maxLeftLength) 84*cdf0e10cSrcweir maxLeftLength = tmp; 85*cdf0e10cSrcweir tmp = xCD->getMaxCharCount(ConversionDirection_FROM_RIGHT); 86*cdf0e10cSrcweir if (tmp > maxRightLength) 87*cdf0e10cSrcweir maxRightLength = tmp; 88*cdf0e10cSrcweir } 89*cdf0e10cSrcweir } else if (xCD.is()) { 90*cdf0e10cSrcweir maxLeftLength = xCD->getMaxCharCount(ConversionDirection_FROM_LEFT); 91*cdf0e10cSrcweir maxRightLength = xCD->getMaxCharCount(ConversionDirection_FROM_RIGHT); 92*cdf0e10cSrcweir } 93*cdf0e10cSrcweir 94*cdf0e10cSrcweir implementationName = "com.sun.star.i18n.TextConversion_ko"; 95*cdf0e10cSrcweir } 96*cdf0e10cSrcweir 97*cdf0e10cSrcweir sal_Int16 SAL_CALL checkScriptType(sal_Unicode c) 98*cdf0e10cSrcweir { 99*cdf0e10cSrcweir typedef struct { 100*cdf0e10cSrcweir UBlockCode from; 101*cdf0e10cSrcweir UBlockCode to; 102*cdf0e10cSrcweir sal_Int16 script; 103*cdf0e10cSrcweir } UBlock2Script; 104*cdf0e10cSrcweir 105*cdf0e10cSrcweir static UBlock2Script scriptList[] = { 106*cdf0e10cSrcweir {UBLOCK_HANGUL_JAMO, UBLOCK_HANGUL_JAMO, SCRIPT_HANGUL}, 107*cdf0e10cSrcweir {UBLOCK_CJK_RADICALS_SUPPLEMENT, UBLOCK_BOPOMOFO, SCRIPT_HANJA}, 108*cdf0e10cSrcweir {UBLOCK_HANGUL_COMPATIBILITY_JAMO, UBLOCK_HANGUL_COMPATIBILITY_JAMO, SCRIPT_HANGUL}, 109*cdf0e10cSrcweir {UBLOCK_KANBUN, UBLOCK_YI_RADICALS, SCRIPT_HANJA}, 110*cdf0e10cSrcweir {UBLOCK_HANGUL_SYLLABLES, UBLOCK_HANGUL_SYLLABLES, SCRIPT_HANGUL}, 111*cdf0e10cSrcweir {UBLOCK_CJK_COMPATIBILITY_IDEOGRAPHS, UBLOCK_CJK_COMPATIBILITY_IDEOGRAPHS, SCRIPT_HANJA}, 112*cdf0e10cSrcweir {UBLOCK_COMBINING_HALF_MARKS, UBLOCK_SMALL_FORM_VARIANTS, SCRIPT_HANJA}, 113*cdf0e10cSrcweir {UBLOCK_HALFWIDTH_AND_FULLWIDTH_FORMS, UBLOCK_HALFWIDTH_AND_FULLWIDTH_FORMS, SCRIPT_HANJA}, 114*cdf0e10cSrcweir }; 115*cdf0e10cSrcweir 116*cdf0e10cSrcweir #define scriptListCount sizeof (scriptList) / sizeof (UBlock2Script) 117*cdf0e10cSrcweir 118*cdf0e10cSrcweir UBlockCode block=ublock_getCode((sal_uInt32) c); 119*cdf0e10cSrcweir sal_uInt16 i; 120*cdf0e10cSrcweir for ( i = 0; i < scriptListCount; i++) { 121*cdf0e10cSrcweir if (block <= scriptList[i].to) break; 122*cdf0e10cSrcweir } 123*cdf0e10cSrcweir return (i < scriptListCount && block >= scriptList[i].from) ? scriptList[i].script : SCRIPT_OTHERS; 124*cdf0e10cSrcweir } 125*cdf0e10cSrcweir 126*cdf0e10cSrcweir Sequence< OUString > SAL_CALL 127*cdf0e10cSrcweir TextConversion_ko::getCharConversions(const OUString& aText, sal_Int32 nStartPos, sal_Int32 nLength, sal_Bool toHanja) 128*cdf0e10cSrcweir { 129*cdf0e10cSrcweir sal_Unicode ch; 130*cdf0e10cSrcweir Sequence< OUString > output; 131*cdf0e10cSrcweir const sal_Unicode* (*getHangul2HanjaData)() = (const sal_Unicode* (*)())getFunctionBySymbol("getHangul2HanjaData"); 132*cdf0e10cSrcweir const Hangul_Index* (*getHangul2HanjaIndex)() = (const Hangul_Index* (*)()) getFunctionBySymbol("getHangul2HanjaIndex"); 133*cdf0e10cSrcweir sal_Int16 (*getHangul2HanjaIndexCount)() = (sal_Int16 (*)()) getFunctionBySymbol("getHangul2HanjaIndexCount"); 134*cdf0e10cSrcweir const sal_uInt16* (*getHanja2HangulIndex)() = (const sal_uInt16* (*)()) getFunctionBySymbol("getHanja2HangulIndex"); 135*cdf0e10cSrcweir const sal_Unicode* (*getHanja2HangulData)() = (const sal_Unicode* (*)()) getFunctionBySymbol("getHanja2HangulData"); 136*cdf0e10cSrcweir if (toHanja && getHangul2HanjaIndex && getHangul2HanjaIndexCount && getHangul2HanjaData) { 137*cdf0e10cSrcweir ch = aText[nStartPos]; 138*cdf0e10cSrcweir const Hangul_Index *Hangul_ko = getHangul2HanjaIndex(); 139*cdf0e10cSrcweir sal_Int16 top = getHangul2HanjaIndexCount(); 140*cdf0e10cSrcweir --top; 141*cdf0e10cSrcweir sal_Int16 bottom = 0; 142*cdf0e10cSrcweir 143*cdf0e10cSrcweir while (bottom <= top) { 144*cdf0e10cSrcweir sal_Int16 current = (top + bottom) / 2; 145*cdf0e10cSrcweir sal_Unicode current_ch = Hangul_ko[current].code; 146*cdf0e10cSrcweir if (ch < current_ch) 147*cdf0e10cSrcweir top = current - 1; 148*cdf0e10cSrcweir else if (ch > current_ch) 149*cdf0e10cSrcweir bottom = current + 1; 150*cdf0e10cSrcweir else { 151*cdf0e10cSrcweir const sal_Unicode *ptr = getHangul2HanjaData() + Hangul_ko[current].address; 152*cdf0e10cSrcweir sal_Int16 count = Hangul_ko[current].count; 153*cdf0e10cSrcweir output.realloc(count); 154*cdf0e10cSrcweir for (sal_Int16 i = 0; i < count; i++) 155*cdf0e10cSrcweir output[i] = OUString(ptr + i, 1); 156*cdf0e10cSrcweir break; 157*cdf0e10cSrcweir } 158*cdf0e10cSrcweir } 159*cdf0e10cSrcweir } else if (! toHanja && getHanja2HangulIndex && getHanja2HangulData) { 160*cdf0e10cSrcweir rtl_uString * newStr = x_rtl_uString_new_WithLength( nLength ); // defined in x_rtl_ustring.h 161*cdf0e10cSrcweir sal_Int32 count = 0; 162*cdf0e10cSrcweir while (count < nLength) { 163*cdf0e10cSrcweir ch = aText[nStartPos + count]; 164*cdf0e10cSrcweir sal_Unicode address = getHanja2HangulIndex()[ch>>8]; 165*cdf0e10cSrcweir if (address != 0xFFFF) 166*cdf0e10cSrcweir address = getHanja2HangulData()[address + (ch & 0xFF)]; 167*cdf0e10cSrcweir 168*cdf0e10cSrcweir if (address != 0xFFFF) 169*cdf0e10cSrcweir newStr->buffer[count++] = address; 170*cdf0e10cSrcweir else 171*cdf0e10cSrcweir break; 172*cdf0e10cSrcweir } 173*cdf0e10cSrcweir if (count > 0) { 174*cdf0e10cSrcweir output.realloc(1); 175*cdf0e10cSrcweir output[0] = OUString( newStr->buffer, count); 176*cdf0e10cSrcweir } 177*cdf0e10cSrcweir } 178*cdf0e10cSrcweir return output; 179*cdf0e10cSrcweir } 180*cdf0e10cSrcweir 181*cdf0e10cSrcweir static Sequence< OUString >& operator += (Sequence< OUString > &rSeq1, Sequence< OUString > &rSeq2 ) 182*cdf0e10cSrcweir { 183*cdf0e10cSrcweir if (! rSeq1.hasElements() && rSeq2.hasElements()) 184*cdf0e10cSrcweir rSeq1 = rSeq2; 185*cdf0e10cSrcweir else if (rSeq2.hasElements()) { 186*cdf0e10cSrcweir sal_Int32 i, j, k, l; 187*cdf0e10cSrcweir k = l = rSeq1.getLength(); 188*cdf0e10cSrcweir rSeq1.realloc(l + rSeq2.getLength()); 189*cdf0e10cSrcweir 190*cdf0e10cSrcweir for (i = 0; i < rSeq2.getLength(); i++) { 191*cdf0e10cSrcweir for (j = 0; j < l; j++) 192*cdf0e10cSrcweir if (rSeq1[j] == rSeq2[i]) 193*cdf0e10cSrcweir break; 194*cdf0e10cSrcweir if (j == l) 195*cdf0e10cSrcweir rSeq1[k++] = rSeq2[i]; 196*cdf0e10cSrcweir } 197*cdf0e10cSrcweir if (rSeq1.getLength() > k) 198*cdf0e10cSrcweir rSeq1.realloc(k); 199*cdf0e10cSrcweir } 200*cdf0e10cSrcweir return rSeq1; 201*cdf0e10cSrcweir } 202*cdf0e10cSrcweir 203*cdf0e10cSrcweir TextConversionResult SAL_CALL 204*cdf0e10cSrcweir TextConversion_ko::getConversions( const OUString& aText, sal_Int32 nStartPos, sal_Int32 nLength, 205*cdf0e10cSrcweir const Locale& aLocale, sal_Int16 nConversionType, sal_Int32 nConversionOptions) 206*cdf0e10cSrcweir throw( RuntimeException, IllegalArgumentException, NoSupportException ) 207*cdf0e10cSrcweir { 208*cdf0e10cSrcweir TextConversionResult result; 209*cdf0e10cSrcweir Sequence <OUString> candidates; 210*cdf0e10cSrcweir result.Boundary.startPos = result.Boundary.endPos = 0; 211*cdf0e10cSrcweir 212*cdf0e10cSrcweir // do conversion only when there are right conversion type and dictionary services. 213*cdf0e10cSrcweir if (nConversionType == TextConversionType::TO_HANGUL || 214*cdf0e10cSrcweir nConversionType == TextConversionType::TO_HANJA) { 215*cdf0e10cSrcweir sal_Int32 start, end, length = aText.getLength() - nStartPos; 216*cdf0e10cSrcweir 217*cdf0e10cSrcweir if (length < 0 || nStartPos < 0) 218*cdf0e10cSrcweir length = 0; 219*cdf0e10cSrcweir else if (length > nLength) 220*cdf0e10cSrcweir length = nLength; 221*cdf0e10cSrcweir 222*cdf0e10cSrcweir sal_Int16 scriptType = SCRIPT_OTHERS; 223*cdf0e10cSrcweir sal_Int32 len = 1; 224*cdf0e10cSrcweir sal_Bool toHanja = (nConversionType == TextConversionType::TO_HANJA); 225*cdf0e10cSrcweir // FROM_LEFT: Hangul -> Hanja 226*cdf0e10cSrcweir // FROM_RIGHT: Hanja -> Hangul 227*cdf0e10cSrcweir ConversionDirection eDirection = toHanja ? ConversionDirection_FROM_LEFT : ConversionDirection_FROM_RIGHT; 228*cdf0e10cSrcweir sal_Int32 maxLength = toHanja ? maxLeftLength : maxRightLength; 229*cdf0e10cSrcweir if (maxLength == 0) maxLength = 1; 230*cdf0e10cSrcweir 231*cdf0e10cSrcweir // search for a max length of convertible text 232*cdf0e10cSrcweir for (start = 0, end = 0; start < length; start++) { 233*cdf0e10cSrcweir if (end <= start) { 234*cdf0e10cSrcweir scriptType = checkScriptType(aText[nStartPos + start]); 235*cdf0e10cSrcweir if (nConversionType == TextConversionType::TO_HANJA) { 236*cdf0e10cSrcweir if (scriptType != SCRIPT_HANGUL) // skip non-Hangul characters 237*cdf0e10cSrcweir continue; 238*cdf0e10cSrcweir } else { 239*cdf0e10cSrcweir if (scriptType != SCRIPT_HANJA) // skip non-Hanja characters 240*cdf0e10cSrcweir continue; 241*cdf0e10cSrcweir } 242*cdf0e10cSrcweir end = start + 1; 243*cdf0e10cSrcweir } 244*cdf0e10cSrcweir if (nConversionOptions & TextConversionOption::CHARACTER_BY_CHARACTER) { 245*cdf0e10cSrcweir result.Candidates = getCharConversions(aText, nStartPos + start, len, toHanja); // char2char conversion 246*cdf0e10cSrcweir } else { 247*cdf0e10cSrcweir for (; end < length && end - start < maxLength; end++) 248*cdf0e10cSrcweir if (checkScriptType(aText[nStartPos + end]) != scriptType) 249*cdf0e10cSrcweir break; 250*cdf0e10cSrcweir 251*cdf0e10cSrcweir for (len = end - start; len > 0; len--) { 252*cdf0e10cSrcweir if (len > 1) { 253*cdf0e10cSrcweir try { 254*cdf0e10cSrcweir if (xCDL.is()) 255*cdf0e10cSrcweir result.Candidates = xCDL->queryConversions(aText, start + nStartPos, len, 256*cdf0e10cSrcweir aLocale, ConversionDictionaryType::HANGUL_HANJA, eDirection, nConversionOptions); // user dictionary 257*cdf0e10cSrcweir } 258*cdf0e10cSrcweir catch ( NoSupportException & ) { 259*cdf0e10cSrcweir // clear reference (when there is no user dictionary) in order 260*cdf0e10cSrcweir // to not always have to catch this exception again 261*cdf0e10cSrcweir // in further calls. (save time) 262*cdf0e10cSrcweir xCDL = 0; 263*cdf0e10cSrcweir } 264*cdf0e10cSrcweir catch (...) { 265*cdf0e10cSrcweir // catch all other exceptions to allow 266*cdf0e10cSrcweir // querying the system dictionary in the next line 267*cdf0e10cSrcweir } 268*cdf0e10cSrcweir if (xCD.is() && toHanja) { // System dictionary would not do Hanja_to_Hangul conversion. 269*cdf0e10cSrcweir candidates = xCD->getConversions(aText, start + nStartPos, len, eDirection, nConversionOptions); 270*cdf0e10cSrcweir result.Candidates += candidates; 271*cdf0e10cSrcweir } 272*cdf0e10cSrcweir } else if (! toHanja) { // do whole word character 2 character conversion for Hanja to Hangul conversion 273*cdf0e10cSrcweir result.Candidates = getCharConversions(aText, nStartPos + start, length - start, toHanja); 274*cdf0e10cSrcweir if (result.Candidates.hasElements()) 275*cdf0e10cSrcweir len = result.Candidates[0].getLength(); 276*cdf0e10cSrcweir } 277*cdf0e10cSrcweir if (result.Candidates.hasElements()) 278*cdf0e10cSrcweir break; 279*cdf0e10cSrcweir } 280*cdf0e10cSrcweir } 281*cdf0e10cSrcweir // found match 282*cdf0e10cSrcweir if (result.Candidates.hasElements()) { 283*cdf0e10cSrcweir result.Boundary.startPos = start + nStartPos;; 284*cdf0e10cSrcweir result.Boundary.endPos = start + len + nStartPos; 285*cdf0e10cSrcweir return result; 286*cdf0e10cSrcweir } 287*cdf0e10cSrcweir } 288*cdf0e10cSrcweir } else 289*cdf0e10cSrcweir throw NoSupportException(); // Conversion type is not supported in this service. 290*cdf0e10cSrcweir return result; 291*cdf0e10cSrcweir } 292*cdf0e10cSrcweir 293*cdf0e10cSrcweir OUString SAL_CALL 294*cdf0e10cSrcweir TextConversion_ko::getConversion( const OUString& aText, sal_Int32 nStartPos, sal_Int32 nLength, 295*cdf0e10cSrcweir const Locale& aLocale, sal_Int16 nConversionType, sal_Int32 nConversionOptions) 296*cdf0e10cSrcweir throw( RuntimeException, IllegalArgumentException, NoSupportException ) 297*cdf0e10cSrcweir { 298*cdf0e10cSrcweir sal_Int32 length = aText.getLength() - nStartPos; 299*cdf0e10cSrcweir 300*cdf0e10cSrcweir if (length <= 0 || nStartPos < 0) 301*cdf0e10cSrcweir return OUString(); 302*cdf0e10cSrcweir else if (length > nLength) 303*cdf0e10cSrcweir length = nLength; 304*cdf0e10cSrcweir 305*cdf0e10cSrcweir OUStringBuffer aBuf(length + 1); 306*cdf0e10cSrcweir TextConversionResult result; 307*cdf0e10cSrcweir const sal_Unicode *str = aText.getStr(); 308*cdf0e10cSrcweir 309*cdf0e10cSrcweir for (sal_Int32 start = nStartPos; length + nStartPos > start; start = result.Boundary.endPos) { 310*cdf0e10cSrcweir 311*cdf0e10cSrcweir result = getConversions(aText, start, length + nStartPos - start, aLocale, nConversionType, nConversionOptions); 312*cdf0e10cSrcweir 313*cdf0e10cSrcweir if (result.Boundary.endPos > 0) { 314*cdf0e10cSrcweir if (result.Boundary.startPos > start) 315*cdf0e10cSrcweir aBuf.append(str + start, result.Boundary.startPos - start); // append skip portion 316*cdf0e10cSrcweir aBuf.append(result.Candidates[0]); // append converted portion 317*cdf0e10cSrcweir } else { 318*cdf0e10cSrcweir if (length + nStartPos > start) 319*cdf0e10cSrcweir aBuf.append(str + start, length + nStartPos - start); // append last portion 320*cdf0e10cSrcweir break; 321*cdf0e10cSrcweir } 322*cdf0e10cSrcweir } 323*cdf0e10cSrcweir 324*cdf0e10cSrcweir return aBuf.makeStringAndClear(); 325*cdf0e10cSrcweir } 326*cdf0e10cSrcweir 327*cdf0e10cSrcweir OUString SAL_CALL 328*cdf0e10cSrcweir TextConversion_ko::getConversionWithOffset( const OUString& aText, sal_Int32 nStartPos, sal_Int32 nLength, 329*cdf0e10cSrcweir const Locale& rLocale, sal_Int16 nConversionType, sal_Int32 nConversionOptions, Sequence<sal_Int32>& offset) 330*cdf0e10cSrcweir throw( RuntimeException, IllegalArgumentException, NoSupportException ) 331*cdf0e10cSrcweir { 332*cdf0e10cSrcweir offset.realloc(0); 333*cdf0e10cSrcweir return getConversion(aText, nStartPos, nLength, rLocale, nConversionType, nConversionOptions); 334*cdf0e10cSrcweir } 335*cdf0e10cSrcweir 336*cdf0e10cSrcweir sal_Bool SAL_CALL 337*cdf0e10cSrcweir TextConversion_ko::interactiveConversion( const Locale& /*rLocale*/, sal_Int16 /*nTextConversionType*/, sal_Int32 /*nTextConversionOptions*/ ) 338*cdf0e10cSrcweir throw( RuntimeException, IllegalArgumentException, NoSupportException ) 339*cdf0e10cSrcweir { 340*cdf0e10cSrcweir return sal_True; 341*cdf0e10cSrcweir } 342*cdf0e10cSrcweir 343*cdf0e10cSrcweir } } } } 344