14#include <unicode/ubidi.h>
15#include <unicode/umachine.h>
16#include <unicode/utypes.h>
25using SkUnicodeBidi = std::unique_ptr<UBiDi, SkBidiFactory::BidiCloseCallback>;
30 : fBidi(
std::move(bidi)), fBidiFact(
std::move(fact)) {}
32 Position
getLength()
override {
return fBidiFact->bidi_getLength(fBidi.get()); }
34 Level
getLevelAt(Position
pos)
override {
return fBidiFact->bidi_getLevelAt(fBidi.get(),
pos); }
45 UErrorCode status = U_ZERO_ERROR;
47 if (U_FAILURE(status)) {
55 this->
bidi_setPara(bidi.get(), (
const UChar*)utf16, utf16Units, bidiLevel,
nullptr, &status);
56 if (U_FAILURE(status)) {
60 return std::unique_ptr<SkBidiIterator>(
61 new SkBidiIterator_icu(std::move(bidi),
sk_ref_sp(
this)));
68 if (!SkTFitsIn<int32_t>(utf8Units)) {
69 SkDEBUGF(
"Bidi error: text too long");
76 SkDEBUGF(
"Bidi error: Invalid utf8 input");
79 std::unique_ptr<uint16_t[]> utf16(
new uint16_t[utf16Units]);
89 return val < 0 ? 0xFFFD : val;
95 std::vector<SkUnicode::BidiRegion>* bidiRegions)
const {
100 UErrorCode status = U_ZERO_ERROR;
102 if (U_FAILURE(status)) {
111 bidi.get(), (
const UChar*)utf16.c_str(), utf16.size(), bidiLevel,
nullptr, &status);
112 if (U_FAILURE(status)) {
118 const char* start8 =
utf8;
119 const char* end8 =
utf8 + utf8Units;
131 bidiRegions->emplace_back(0, utf8Units, this->
bidi_getLevelAt(bidi.get(), 0));
135 while (pos16 < end16) {
138 currentLevel =
level;
139 }
else if (
level != currentLevel) {
141 bidiRegions->emplace_back(pos8,
end, currentLevel);
142 currentLevel =
level;
150 bidiRegions->emplace_back(pos8,
end, currentLevel);
sk_sp< T > sk_ref_sp(T *obj)
std::unique_ptr< SkBidiIterator > SkUnicodeBidi
SkDEBUGCODE(SK_SPI) SkThreadID SkGetThreadID()
static SkUnichar utf8_next(const char **ptr, const char *end)
bool ExtractBidi(const char utf8[], int utf8Units, SkUnicode::TextDirection dir, std::vector< SkUnicode::BidiRegion > *bidiRegions) const
virtual void bidi_setPara(UBiDi *bidi, const UChar *text, int32_t length, UBiDiLevel paraLevel, UBiDiLevel *embeddingLevels, UErrorCode *status) const =0
virtual SkBidiIterator::Level bidi_getLevelAt(const UBiDi *bidi, int pos) const =0
virtual SkBidiIterator::Position bidi_getLength(const UBiDi *bidi) const =0
std::unique_ptr< SkBidiIterator > MakeIterator(const uint16_t utf16[], int utf16Units, SkBidiIterator::Direction dir) const
virtual UBiDi * bidi_openSized(int32_t maxLength, int32_t maxRunCount, UErrorCode *pErrorCode) const =0
virtual BidiCloseCallback bidi_close_callback() const =0
virtual UBiDiDirection bidi_getDirection(const UBiDi *bidi) const =0
virtual const char * errorName(UErrorCode status) const =0
virtual Level getLevelAt(Position)=0
virtual Position getLength()=0
static std::u16string convertUtf8ToUtf16(const char *utf8, int utf8Units)
SK_SPI int UTF8ToUTF16(uint16_t dst[], int dstCapacity, const char src[], size_t srcByteLength)
SK_SPI SkUnichar NextUTF8(const char **ptr, const char *end)
SK_SPI size_t ToUTF16(SkUnichar uni, uint16_t utf16[2]=nullptr)
DEF_SWITCHES_START aot vmservice shared library Name of the *so containing AOT compiled Dart assets for launching the service isolate vm snapshot The VM snapshot data that will be memory mapped as read only SnapshotAssetPath must be present isolate snapshot The isolate snapshot data that will be memory mapped as read only SnapshotAssetPath must be present cache dir Path to the cache directory This is different from the persistent_cache_path in embedder which is used for Skia shader cache icu native lib Path to the library file that exports the ICU data vm service The hostname IP address on which the Dart VM Service should be served If not defaults to or::depending on whether ipv6 is specified vm service A custom Dart VM Service port The default is to pick a randomly available open port disable vm Disable the Dart VM Service The Dart VM Service is never available in release mode disable vm service Disable mDNS Dart VM Service publication Bind to the IPv6 localhost address for the Dart VM Service Ignored if vm service host is set endless trace Enable an endless trace buffer The default is a ring buffer This is useful when very old events need to viewed For during application launch Memory usage will continue to grow indefinitely however Start app with an specific route defined on the framework flutter assets dir