void TextSearchIndex::splitSearchResult(const std::string& result,
std::string& text,
ObjectFileRef& ref) const
{
// Get the index that marks the end of the
// the text and where the FileOffset begins
// Each result has only one offset that occupies
// the last offsetSizeBytes bytes of the string, and
// the offset is in MSB left to right
FileOffset offset=0;
FileOffset add=0;
size_t idx=result.size()-1;
for(size_t i=0; i < offsetSizeBytes; i++) {
add = (unsigned char)(result[idx]);
offset |= (add << (i*8));
idx--;
}
// Immediately preceding the FileOffset is
// a single byte that denotes offset type
RefType reftype=static_cast<RefType>((unsigned char)(result[idx]));
ref.Set(offset,reftype);
text=result.substr(0,idx);
}
bool FileScanner::Read(ObjectFileRef& ref)
{
uint8_t typeByte;
FileOffset fileOffset;
if (!(Read(typeByte) &&
ReadFileOffset(fileOffset))) {
return false;
}
ref.Set(fileOffset,(RefType)typeByte);
return true;
}
bool LocationIndex::Read(FileScanner& scanner,
ObjectFileRef& object) const
{
uint8_t type;
FileOffset fileOffset;
if (!scanner.Read(type)) {
return false;
}
switch (type) {
case refNode:
if (!scanner.ReadFileOffset(fileOffset,
bytesForNodeFileOffset)) {
return false;
}
break;
case refArea:
if (!scanner.ReadFileOffset(fileOffset,
bytesForAreaFileOffset)) {
return false;
}
break;
case refWay:
if (!scanner.ReadFileOffset(fileOffset,
bytesForWayFileOffset)) {
return false;
}
break;
default:
return false;
}
object.Set(fileOffset,
(RefType)type);
return true;
}