wxZip 사용

다 좋은데.. 스펙을 충실히 따라서 2GB인지 4GB인지 이상된 .zip 파일을 못풀어줌.

zlib + minizip 은 대용량 가능 (http://www.winimage.com/zLibDll/minizip.html).

// 압축 풀기

void uncompress(const wxString& zip_path) {

wxFileInputStream in(zip_path);

if (!in) {

//Error("can't open stream : " + zip_path.ToStdString());

return;

}

wxZipInputStream zip(in);

unique_ptr<wxZipEntry> entry;

while (entry.reset(zip.GetNextEntry()), entry.get() != NULL) {

wxString file_path = wxFileName(zip_path).GetPath(wxPATH_GET_SEPARATOR) + entry->GetName();

if (entry->IsDir()) {

wxFileName::Mkdir(file_path, entry->GetMode(), wxPATH_MKDIR_FULL);

continue;

}

zip.OpenEntry(*entry);

if (!zip.CanRead()) {

//Error("can't read zip entry : " + entry->GetInternalName().ToStdString());

continue;

}

wxFile file(file_path, wxFile::write);

if (!file.IsOpened()) {

//Error("can't open file(write mode) : " + file_path.ToStdString());

continue;

}

while (!zip.Eof()) {

vector<BYTE> buffer(8192, 0x00);

zip.Read(&buffer.at(0), buffer.size());

size_t bytes = zip.LastRead();

if (bytes > 0) {

file.Write(&buffer.at(0), bytes);

}

}

}

}

// 압축해재시 크기

UINT64 uncompressedSize(vector<wxString>& files) {

UINT64 size = 0;

wxFileInputStream in(*it);

if (!in) {

//Error("can't open file : " + it->ToStdString());

continue;

}

wxZipInputStream zip(in);

unique_ptr<wxZipEntry> entry;

wxZipEntry* ent = zip.GetNextEntry();

while (entry.reset(zip.GetNextEntry()), entry.get() != NULL) {

size += entry->GetSize();

}

return size;

}