Function WriteZip

source/common/utility/writezip.cpp:185–241

}

bool WriteZip(const char* filename, const FCompressedBuffer* content, size_t contentcount)
{
	// try to determine local time
	struct tm *ltime;
	time_t ttime;
	ttime = time(nullptr);
	ltime = localtime(&ttime);
	auto dostime = time_to_dos(ltime);

	TArray<int> positions;

	auto f = FileWriter::Open(filename);
	if (f != nullptr)
	{
		for (size_t i = 0; i < contentcount; i++)
		{
			int pos = AppendToZip(f, content[i], dostime);
			if (pos == -1)
			{
				delete f;
				RemoveFile(filename);
				return false;
			}
			positions.Push(pos);
		}

		int dirofs = (int)f->Tell();
		for (size_t i = 0; i < contentcount; i++)
		{
			if (AppendCentralDirectory(f, content[i], dostime, positions[i]) < 0)
			{
				delete f;
				RemoveFile(filename);
				return false;
			}
		}

		// Write the directory terminator.
		FZipEndOfCentralDirectory dirend;
		dirend.Magic = ZIP_ENDOFDIR;
		dirend.DiskNumber = 0;
		dirend.FirstDisk = 0;
		dirend.NumEntriesOnAllDisks = dirend.NumEntries = LittleShort((uint16_t)contentcount);
		dirend.DirectoryOffset = LittleLong((unsigned)dirofs);
		dirend.DirectorySize = LittleLong((uint32_t)(f->Tell() - dirofs));
		dirend.ZipCommentLength = 0;
		if (f->Write(&dirend, sizeof(dirend)) != sizeof(dirend))
		{
			delete f;
			RemoveFile(filename);
			return false;
		}
		delete f;
		return true;
	}
	return false;
}