diff options
Diffstat (limited to 'vcl/source/fontsubset/xlat.cxx')
| -rw-r--r-- | vcl/source/fontsubset/xlat.cxx | 247 |
1 files changed, 140 insertions, 107 deletions
diff --git a/vcl/source/fontsubset/xlat.cxx b/vcl/source/fontsubset/xlat.cxx index 27b2f517f4a1..c4699ec5a81a 100644 --- a/vcl/source/fontsubset/xlat.cxx +++ b/vcl/source/fontsubset/xlat.cxx @@ -25,163 +25,196 @@ * ************************************************************************/ -/* - * - * Data translation from Unicode to MS encodings - * If the host system provides this functionality - * this file should be rewritten to use it and - * the large translation arrays should be removed - * - * Author: Alexander Gelfenbain - * - */ +#include "rtl/textcvt.h" +#include <tools/debug.hxx> -#include "xlat.hxx" +namespace { // anonymous namespace -namespace vcl -{ +// ==================================================================== -// TODO: use generic encoding converters and get rid of the include files below -#include "u2big5.inc" -#include "u2johab.inc" -#include "u2prc.inc" -#include "u2shiftjis.inc" -#include "u2wansung.inc" +#define MAX_CVT_SELECT 6 -#define MISSING_CODE 0 +class ConverterCache +{ +public: + explicit ConverterCache( void ); + ~ConverterCache( void ); + sal_uInt16 convertOne( int nSelect, sal_Unicode ); + void convertStr( int nSelect, const sal_Unicode* pSrc, sal_uInt16* pDst, int nCount ); +protected: + void ensureConverter( int nSelect ); +private: + rtl_UnicodeToTextConverter maConverterCache[ MAX_CVT_SELECT+1 ]; + rtl_UnicodeToTextContext maContexts[ MAX_CVT_SELECT+1 ]; +}; + +// ==================================================================== + +ConverterCache::ConverterCache( void) +{ + for( int i = 0; i <= MAX_CVT_SELECT; ++i) + { + maConverterCache[i] = NULL; + maContexts[i] = NULL; + } +} -static sal_uInt16 xlat(sal_uInt16pair p[], sal_uInt32 n, sal_uInt16 src) +// -------------------------------------------------------------------- + +ConverterCache::~ConverterCache( void) { - int l = 0, r = n - 1, i; - sal_uInt16 t, res = MISSING_CODE; + for( int i = 0; i <= MAX_CVT_SELECT; ++i) + { + if( !maContexts[i] ) + continue; + rtl_destroyUnicodeToTextContext( maConverterCache[i], maContexts[i] ); + rtl_destroyUnicodeToTextConverter( maConverterCache[i] ); + } +} - do { - i = (l + r) >> 1; - t = p[i].s; - if (src >= t) l = i + 1; - if (src <= t) r = i - 1; - } while (l <= r); +// -------------------------------------------------------------------- - if (l - r == 2) { - res = p[l-1].d; +void ConverterCache::ensureConverter( int nSelect ) +{ + // DBG_ASSERT( (2<=nSelect) && (nSelect<=MAX_CVT_SELECT)), "invalid XLAT.Converter requested" ); + rtl_UnicodeToTextContext aContext = maContexts[ nSelect ]; + if( !aContext ) + { + rtl_TextEncoding eRecodeFrom = RTL_TEXTENCODING_UNICODE; + switch( nSelect ) + { + default: nSelect = 1; // fall through to unicode recoding + case 1: eRecodeFrom = RTL_TEXTENCODING_UNICODE; break; + case 2: eRecodeFrom = RTL_TEXTENCODING_SHIFT_JIS; break; + case 3: eRecodeFrom = RTL_TEXTENCODING_GB_2312; break; + case 4: eRecodeFrom = RTL_TEXTENCODING_BIG5; break; + case 5: eRecodeFrom = RTL_TEXTENCODING_MS_949; break; + case 6: eRecodeFrom = RTL_TEXTENCODING_MS_1361; break; + } + rtl_UnicodeToTextConverter aRecodeConverter = rtl_createUnicodeToTextConverter( eRecodeFrom ); + maConverterCache[ nSelect ] = aRecodeConverter; + + aContext = rtl_createUnicodeToTextContext( aRecodeConverter ); + maContexts[ nSelect ] = aContext; } - return res; + rtl_resetUnicodeToTextContext( maConverterCache[ nSelect ], aContext ); +} + +// -------------------------------------------------------------------- + +sal_uInt16 ConverterCache::convertOne( int nSelect, sal_Unicode aChar ) +{ + ensureConverter( nSelect ); + + sal_Unicode aUCS2Char = aChar; + sal_Char aTempArray[8]; + sal_Size nTempSize; + sal_uInt32 nCvtInfo; + + // TODO: use direct unicode->mbcs converter should there ever be one + int nCodeLen = rtl_convertUnicodeToText( + maConverterCache[ nSelect ], maContexts[ nSelect ], + &aUCS2Char, 1, aTempArray, sizeof(aTempArray), + RTL_UNICODETOTEXT_FLAGS_UNDEFINED_0 + | RTL_UNICODETOTEXT_FLAGS_INVALID_0, + &nCvtInfo, &nTempSize ); + + sal_uInt16 aCode = aTempArray[0]; + for( int i = 1; i < nCodeLen; ++i ) + aCode = (aCode << 8) + (aTempArray[i] & 0xFF); + return aCode; +} + +// -------------------------------------------------------------------- + +void ConverterCache::convertStr( int nSelect, const sal_Unicode* pSrc, sal_uInt16* pDst, int nCount ) +{ + ensureConverter( nSelect ); + + for( int n = 0; n < nCount; ++n ) + { + sal_Unicode aUCS2Char = pSrc[n]; + + sal_Char aTempArray[8]; + sal_Size nTempSize; + sal_uInt32 nCvtInfo; + + // assume that non-unicode-fonts do not support codepoints >U+FFFF + // TODO: use direct unicode->mbcs converter should there ever be one + int nCodeLen = rtl_convertUnicodeToText( + maConverterCache[ nSelect ], maContexts[ nSelect ], + &aUCS2Char, 1, aTempArray, sizeof(aTempArray), + RTL_UNICODETOTEXT_FLAGS_UNDEFINED_0 + | RTL_UNICODETOTEXT_FLAGS_INVALID_0, + &nCvtInfo, &nTempSize ); + + sal_uInt16 aCode = aTempArray[0]; + for( int i = 1; i < nCodeLen; ++i ) + aCode = (aCode << 8) + (aTempArray[i] & 0xFF); + pDst[n] = aCode; + } } +} // anonymous namespace + +// ==================================================================== + +#include "xlat.hxx" + +namespace vcl +{ + +static ConverterCache aCC; + sal_uInt16 TranslateChar12(sal_uInt16 src) { - return xlat(xlat_1_2, sizeof(xlat_1_2) / sizeof(xlat_1_2[0]), src); + return aCC.convertOne( 2, src); } sal_uInt16 TranslateChar13(sal_uInt16 src) { - return xlat(xlat_1_3, sizeof(xlat_1_3) / sizeof(xlat_1_3[0]), src); + return aCC.convertOne( 3, src); } sal_uInt16 TranslateChar14(sal_uInt16 src) { - return xlat(xlat_1_4, sizeof(xlat_1_4) / sizeof(xlat_1_4[0]), src); + return aCC.convertOne( 4, src); } sal_uInt16 TranslateChar15(sal_uInt16 src) { - return xlat(xlat_1_5, sizeof(xlat_1_5) / sizeof(xlat_1_5[0]), src); + return aCC.convertOne( 5, src); } sal_uInt16 TranslateChar16(sal_uInt16 src) { - return xlat(xlat_1_6, sizeof(xlat_1_6) / sizeof(xlat_1_5[0]), src); + return aCC.convertOne( 6, src); } void TranslateString12(sal_uInt16 *src, sal_uInt16 *dst, sal_uInt32 n) { - sal_uInt32 i; - sal_uInt16 lastS, lastD; - - if (n == 0) return; - - lastD = dst[0] = xlat(xlat_1_2, sizeof(xlat_1_2) / sizeof(xlat_1_2[0]), lastS = src[0]); - - for (i=1; i < n; i++) { - if (src[i] == lastS) { - dst[i] = lastD; - } else { - lastD = dst[i] = xlat(xlat_1_2, sizeof(xlat_1_2) / sizeof(xlat_1_2[0]), lastS = src[i]); - } - } + aCC.convertStr( 2, src, dst, n); } void TranslateString13(sal_uInt16 *src, sal_uInt16 *dst, sal_uInt32 n) { - sal_uInt32 i; - sal_uInt16 lastS, lastD; - - if (n == 0) return; - - lastD = dst[0] = xlat(xlat_1_3, sizeof(xlat_1_3) / sizeof(xlat_1_3[0]), lastS = src[0]); - - for (i=1; i < n; i++) { - if (src[i] == lastS) { - dst[i] = lastD; - } else { - lastD = dst[i] = xlat(xlat_1_3, sizeof(xlat_1_3) / sizeof(xlat_1_3[0]), lastS = src[i]); - } - } + aCC.convertStr( 3, src, dst, n); } void TranslateString14(sal_uInt16 *src, sal_uInt16 *dst, sal_uInt32 n) { - sal_uInt32 i; - sal_uInt16 lastS, lastD; - - if (n == 0) return; - - lastD = dst[0] = xlat(xlat_1_4, sizeof(xlat_1_4) / sizeof(xlat_1_4[0]), lastS = src[0]); - - for (i=1; i < n; i++) { - if (src[i] == lastS) { - dst[i] = lastD; - } else { - lastD = dst[i] = xlat(xlat_1_4, sizeof(xlat_1_4) / sizeof(xlat_1_4[0]), lastS = src[i]); - } - } + aCC.convertStr( 4, src, dst, n); } void TranslateString15(sal_uInt16 *src, sal_uInt16 *dst, sal_uInt32 n) { - sal_uInt32 i; - sal_uInt16 lastS, lastD; - - if (n == 0) return; - - lastD = dst[0] = xlat(xlat_1_5, sizeof(xlat_1_5) / sizeof(xlat_1_5[0]), lastS = src[0]); - - for (i=1; i < n; i++) { - if (src[i] == lastS) { - dst[i] = lastD; - } else { - lastD = dst[i] = xlat(xlat_1_5, sizeof(xlat_1_5) / sizeof(xlat_1_5[0]), lastS = src[i]); - } - } + aCC.convertStr( 5, src, dst, n); } void TranslateString16(sal_uInt16 *src, sal_uInt16 *dst, sal_uInt32 n) { - sal_uInt32 i; - sal_uInt16 lastS, lastD; - - if (n == 0) return; - - lastD = dst[0] = xlat(xlat_1_6, sizeof(xlat_1_6) / sizeof(xlat_1_6[0]), lastS = src[0]); - - for (i=1; i < n; i++) { - if (src[i] == lastS) { - dst[i] = lastD; - } else { - lastD = dst[i] = xlat(xlat_1_6, sizeof(xlat_1_6) / sizeof(xlat_1_6[0]), lastS = src[i]); - } - } + aCC.convertStr( 6, src, dst, n); } } // namespace vcl |