in platform/cc/interop.cc [1056:1070]
size_t skija::UtfIndicesConverter::from16To8(uint32_t i16) {
if (i16 >= fPos16) {
// if new i16 >= last fPos16, continue from where we started
} else {
fPtr8 = fStart8;
fPos16 = 0;
}
while (fPtr8 < fEnd8 && fPos16 < i16) {
SkUnichar u = SkUTF::NextUTF8(&fPtr8, fEnd8);
fPos16 += (uint32_t) SkUTF::ToUTF16(u);
}
return fPtr8 - fStart8;
}