Method getFileDataByChunks

Source/3rdParty/Zip/ZipUtils.cpp:255–282

}

bool ZipFile::getFileDataByChunks(const std::string& fileName, const std::function<bool(unsigned char*, int)>& handler) {
	BLOCK_START {
		BREAK_IF(!_file);
		BREAK_IF(fileName.empty());
		auto archive = &_file->archive;
		std::string searchName = getSearchName(fileName);
		auto it = _file->fileList.find(searchName);
		BREAK_IF(it == _file->fileList.end());
		auto zipIter = mz_zip_reader_extract_file_iter_new(archive, it->second.name.c_str(), 0);
		uint8_t buf[DORA_COPY_BUFFER_SIZE];
		size_t nSize = 0, total = 0;
		do {
			nSize = mz_zip_reader_extract_iter_read(zipIter, buf, DORA_COPY_BUFFER_SIZE);
			if (nSize > 0) {
				if (handler(buf, nSize)) {
					return false;
				}
			}
			total += nSize;
		} while (nSize != 0);
		mz_zip_reader_extract_iter_free(zipIter);
		if (total == 0 || total == (int)it->second.size) {
			return true;
		} else {
			Error("ZipUtils: the file size is wrong: \"{}\".", fileName);
			return false;
		}
	}
	BLOCK_END
	return false;
}