diff options
Diffstat (limited to 'src/3rdparty/harfbuzz/src/harfbuzz-indic.cpp')
| -rw-r--r-- | src/3rdparty/harfbuzz/src/harfbuzz-indic.cpp | 117 |
1 files changed, 69 insertions, 48 deletions
diff --git a/src/3rdparty/harfbuzz/src/harfbuzz-indic.cpp b/src/3rdparty/harfbuzz/src/harfbuzz-indic.cpp index 7104d2af2c..48f4f908a8 100644 --- a/src/3rdparty/harfbuzz/src/harfbuzz-indic.cpp +++ b/src/3rdparty/harfbuzz/src/harfbuzz-indic.cpp @@ -419,7 +419,7 @@ static const unsigned char indicForms[0xe00-0x900] = { Matra, Halant, Invalid, Invalid, Invalid, Invalid, Invalid, Invalid, - Invalid, Invalid, Invalid, LengthMark, + Invalid, Invalid, Invalid, Matra, Invalid, Invalid, Invalid, Invalid, Invalid, Invalid, Invalid, Invalid, @@ -1050,62 +1050,59 @@ static const IndicOrdering * const indic_order[] = { // vowel matras that have to be split into two parts. static const unsigned short split_matras[] = { - // matra, split1, split2 + // matra, split1, split2, split3 // bengalis - 0x9cb, 0x9c7, 0x9be, - 0x9cc, 0x9c7, 0x9d7, + 0x9cb, 0x9c7, 0x9be, 0x0, + 0x9cc, 0x9c7, 0x9d7, 0x0, // oriya - 0xb48, 0xb47, 0xb56, - 0xb4b, 0xb47, 0xb3e, - 0xb4c, 0xb47, 0xb57, + 0xb48, 0xb47, 0xb56, 0x0, + 0xb4b, 0xb47, 0xb3e, 0x0, + 0xb4c, 0xb47, 0xb57, 0x0, // tamil - 0xbca, 0xbc6, 0xbbe, - 0xbcb, 0xbc7, 0xbbe, - 0xbcc, 0xbc6, 0xbd7, + 0xbca, 0xbc6, 0xbbe, 0x0, + 0xbcb, 0xbc7, 0xbbe, 0x0, + 0xbcc, 0xbc6, 0xbd7, 0x0, // telugu - 0xc48, 0xc46, 0xc56, + 0xc48, 0xc46, 0xc56, 0x0, // kannada - 0xcc0, 0xcbf, 0xcd5, - 0xcc7, 0xcc6, 0xcd5, - 0xcc8, 0xcc6, 0xcd6, - 0xcca, 0xcc6, 0xcc2, - 0xccb, 0xcca, 0xcd5, + 0xcc0, 0xcbf, 0xcd5, 0x0, + 0xcc7, 0xcc6, 0xcd5, 0x0, + 0xcc8, 0xcc6, 0xcd6, 0x0, + 0xcca, 0xcc6, 0xcc2, 0x0, + 0xccb, 0xcc6, 0xcc2, 0xcd5, // malayalam - 0xd4a, 0xd46, 0xd3e, - 0xd4b, 0xd47, 0xd3e, - 0xd4c, 0xd46, 0xd57, + 0xd4a, 0xd46, 0xd3e, 0x0, + 0xd4b, 0xd47, 0xd3e, 0x0, + 0xd4c, 0xd46, 0xd57, 0x0, // sinhala - 0xdda, 0xdd9, 0xdca, - 0xddc, 0xdd9, 0xdcf, - 0xddd, 0xddc, 0xdca, - 0xdde, 0xdd9, 0xddf, + 0xdda, 0xdd9, 0xdca, 0x0, + 0xddc, 0xdd9, 0xdcf, 0x0, + 0xddd, 0xdd9, 0xdcf, 0xdca, + 0xdde, 0xdd9, 0xddf, 0x0, 0xffff }; -static inline void splitMatra(unsigned short *reordered, int matra, int &len, int &base) +static inline void splitMatra(unsigned short *reordered, int matra, int &len) { unsigned short matra_uc = reordered[matra]; //qDebug("matra=%d, reordered[matra]=%x", matra, reordered[matra]); const unsigned short *split = split_matras; while (split[0] < matra_uc) - split += 3; + split += 4; assert(*split == matra_uc); ++split; - if (indic_position(*split) == Pre) { - reordered[matra] = split[1]; - memmove(reordered + 1, reordered, len*sizeof(unsigned short)); - reordered[0] = split[0]; - base++; - } else { - memmove(reordered + matra + 1, reordered + matra, (len-matra)*sizeof(unsigned short)); - reordered[matra] = split[0]; - reordered[matra+1] = split[1]; - } - len++; + int added_chars = split[2] == 0x0 ? 1 : 2; + + memmove(reordered + matra + added_chars, reordered + matra, (len-matra)*sizeof(unsigned short)); + reordered[matra] = split[0]; + reordered[matra+1] = split[1]; + if(added_chars == 2) + reordered[matra+2] = split[2]; + len += added_chars; } #ifndef NO_OPENTYPE @@ -1130,12 +1127,23 @@ static const HB_OpenTypeFeature indic_features[] = { // #define INDIC_DEBUG #ifdef INDIC_DEBUG -#define IDEBUG qDebug +#define IDEBUG hb_debug +#include <stdarg.h> + +static void hb_debug(const char *msg, ...) +{ + va_list ap; + va_start(ap, msg); // use variable arg list + vfprintf(stderr, msg, ap); + va_end(ap); + fprintf(stderr, "\n"); +} + #else #define IDEBUG if(0) printf #endif -#ifdef INDIC_DEBUG +#if 0 //def INDIC_DEBUG static QString propertiesToString(int properties) { QString res; @@ -1386,12 +1394,12 @@ static bool indic_shape_syllable(HB_Bool openType, HB_ShaperItem *item, bool inv // to be at the beginning of the syllable, so we just move // them there now. if (matra_position == Split) { - splitMatra(uc, matra, len, base); + splitMatra(uc, matra, len); // Handle three-part matras (0xccb in Kannada) matra_position = indic_position(uc[matra]); - if (matra_position == Split) - splitMatra(uc, matra, len, base); - } else if (matra_position == Pre) { + } + + if (matra_position == Pre) { unsigned short m = uc[matra]; while (matra--) uc[matra+1] = uc[matra]; @@ -1609,11 +1617,11 @@ static bool indic_shape_syllable(HB_Bool openType, HB_ShaperItem *item, bool inv // halant always applies #ifdef INDIC_DEBUG - { - IDEBUG("OT properties:"); - for (int i = 0; i < len; ++i) - qDebug(" i: %s", ::propertiesToString(properties[i]).toLatin1().data()); - } +// { +// IDEBUG("OT properties:"); +// for (int i = 0; i < len; ++i) +// qDebug(" i: %s", ::propertiesToString(properties[i]).toLatin1().data()); +// } #endif // initialize @@ -1731,6 +1739,11 @@ static int indic_nextSyllableBoundary(HB_Script script, const HB_UChar16 *s, int if (script == HB_Script_Bengali && pos == 1 && (uc[0] == 0x0985 || uc[0] == 0x098f)) break; + // Sinhala uses the Halant as a component of certain matras. Allow these, but keep the state on Matra. + if (script == HB_Script_Sinhala && state == Matra) { + ++pos; + continue; + } goto finish; case Nukta: if (state == Consonant) @@ -1741,12 +1754,16 @@ static int indic_nextSyllableBoundary(HB_Script script, const HB_UChar16 *s, int break; // fall through case VowelMark: - if (state == Matra || state == IndependentVowel) + if (state == Matra || state == LengthMark || state == IndependentVowel) break; // fall through case Matra: if (state == Consonant || state == Nukta) break; + if (state == Matra) { + // ### needs proper testing for correct two/three part matras + break; + } // ### not sure if this is correct. If it is, does it apply only to Bengali or should // it work for all Indic languages? // the combination Independent_A + Vowel Sign AA is allowed. @@ -1762,6 +1779,10 @@ static int indic_nextSyllableBoundary(HB_Script script, const HB_UChar16 *s, int goto finish; case LengthMark: + if (state == Matra) { + // ### needs proper testing for correct two/three part matras + break; + } case IndependentVowel: case Invalid: case Other: |