bool QuickIndexImpl::Init( const tstring &path, size_t file_number, size_t entry_size, bool read_only )
{
if (0 == entry_size) {
return false;
}
bool exist = false;
index_file_path_ = path;//MakePathRegular(path);
// Write to a temp file
index_file_path_temp_ = index_file_path_ + _T(".temp");
if (!IsFileExist(index_file_path_)) {
if (read_only) {
return false;
}
if (IsFileExist(index_file_path_temp_.c_str())) {
::DeleteFile(index_file_path_temp_.c_str());
}
DWORD access = GENERIC_READ | GENERIC_WRITE | DELETE;
HANDLE file = CreateFile(index_file_path_temp_.c_str(), access, NULL, NULL,
CREATE_ALWAYS, FILE_FLAG_OVERLAPPED, NULL);
if (INVALID_HANDLE_VALUE == file) {
return false;
}
CloseHandle(file);
header_ = (QuickIndexHeader*)index_file_.Init(index_file_path_temp_, sizeof(QuickIndexHeader));
index_file_modify_ = true;
}
else {
exist = true;
if (GetFileSize(index_file_path_.c_str()) > 0) {
header_ = (QuickIndexHeader*)index_file_.Init(index_file_path_, 0);
}
else {
header_ = (QuickIndexHeader*)index_file_.Init(index_file_path_, sizeof(QuickIndexHeader));
}
}
if (NULL == header_) {
return false;
}
if (!exist) {
if (!GenerateHeader(file_number, entry_size)) {
return false;
}
if (!GrowIndexFile()) {
return false;
}
}
if (!IsHeaderValid()) {
return false;
}
return true;
}
bool EdiDocument::IsValid(bool doLog) const {
bool result = IsHeaderValid(doLog);
if (result || doLog) {
for ( size_t row = 0; row < GetNumberRows(); row++ ) {
for ( size_t col = 0; col < GetColCount(); col++ ) {
if ( !IsValidValue(row, col, doLog) ) {
if ( !doLog ) {
return false;
} else {
result = false;
}
}
}
}
}
return result;
};