C++ ZipFile类代码示例

ssize_t processJarFiles(Bundle* bundle, ZipFile* zip)
{
    status_t err;
    ssize_t count = 0;
    const android::Vector<const char*>& jars = bundle->getJarFiles();

    size_t N = jars.size();
    for (size_t i=0; i<N; i++) {
        ZipFile jar;
        err = jar.open(jars[i], ZipFile::kOpenReadOnly);
        if (err != 0) {
            fprintf(stderr, "ERROR: unable to open '%s' as a zip file: %d\n",
                jars[i], err);
            return err;
        }
        err += processJarFile(&jar, zip);
        if (err < 0) {
            fprintf(stderr, "ERROR: unable to process '%s'\n", jars[i]);
            return err;
        }
        count += err;
    }

    return count;
}

Handle<Value> ZipFile::New(const Arguments& args)
{
    if (!args.IsConstructCall())
        return ThrowException(String::New("Cannot call constructor as function, you need to use 'new' keyword"));

    if (args.Length() != 1 || !args[0]->IsString())
        return ThrowException(Exception::TypeError(
          String::New("first argument must be a path to a zipfile")));

    std::string input_file = TOSTR(args[0]);
    struct zip *za;
    int err;
    char errstr[1024];
    if ((za=zip_open(input_file.c_str(), ZIP_CREATE, &err)) == NULL) {
        zip_error_to_str(errstr, sizeof(errstr), err, errno);
        std::stringstream s;
        s << "cannot open file: " << input_file << " error: " << errstr << "\n";
        return ThrowException(Exception::Error(
            String::New(s.str().c_str())));
    }

    ZipFile* zf = new ZipFile(input_file);

    zf->archive = za;
    zf->GetNames();
    zf->Wrap(args.This());
    return args.This();

}

unsigned char* getFileDataFromZip(const char* zipFile, const char* fileName, ssize_t* size)
{
	if (nullptr == zipFile || nullptr == fileName || nullptr == size)
		return nullptr;

	Data zipData = FileUtils::getInstance()->getDataFromFile(zipFile);
	if (zipData.isNull())
		return nullptr;

	ZipFile * zip = ZipFile::createWithBuffer(zipData.getBytes(), zipData.getSize());
	if (nullptr == zip)
		return nullptr;

	*size = 0;
	unsigned char * data = zip->getFileData(fileName, size);
	delete zip;
	if (nullptr == data || size <= 0)
	{
		*size = 0;
		free(data);
		return nullptr;
	}

	return data;
}

// Creates new zip file object for given zip file name, then opens zip file
ZipFile* ZipFile::Open(String* FileName)
{
	ZipFile* zipFile = new ZipFile();

	zipFile->FileName = FileName;
	zipFile->Open();

	return zipFile;
}

// Updates specified files in zip
void ZipFile::Update(String* FileSpec, UpdateOption UpdateWhen, Boolean AddNewFiles, Boolean RecurseSubdirectories, PathInclusion AddPathMethod)
{
	// If destination zip file doesn't exist, we just perform an Add
	if (!File::Exists(fileName))
	{
		if (AddNewFiles) Add(FileSpec, RecurseSubdirectories, AddPathMethod);
		return;
	}

	char* pszPassword = NULL;
	ZipFile* tempZipFile;
	OpenFileForUnzip();

	// Just wrapping in a try/catch/finally to make sure unmanaged code allocations always get released and temp zip file gets removed
	try
	{
		// Create temporary zip file to hold update results
		tempZipFile = CreateTempZipFile();

		// Get ANSI password, if one was provided
		if (password)
			if (password->get_Length())
				pszPassword = StringToCharBuffer(password);

		String* fileSpec = Path::GetFileName(FileSpec);
		String* rootPath = JustPath(FileSpec, fileSpec);

		UpdateFilesInZip(tempZipFile, fileSpec, rootPath, rootPath->get_Length(), UpdateWhen, AddNewFiles, RecurseSubdirectories, AddPathMethod, pszPassword);

		// Now make the temp file the new zip file
		Close();
		tempZipFile->Close();
		File::Delete(fileName);
		File::Move(tempZipFile->fileName, fileName);
	}
	catch (CompressionException* ex)		
	{
		// We just rethrow any errors back to user
		throw ex;
	}
	catch (Exception* ex)
	{
		throw ex;
	}
	__finally
	{
		if (pszPassword)
			free(pszPassword);

		// If everything went well, temp zip will no longer exist, but just in case we tidy up and delete the temp file...
		DeleteTempZipFile(tempZipFile);
	}

	// We'll reload the file list after update if requested...
	if (autoRefresh) Refresh();
}

    Result unzip (const MemoryBlock& data)
    {
        setStatusMessage ("Installing...");

        File unzipTarget;
        bool isUsingTempFolder = false;

        {
            MemoryInputStream input (data, false);
            ZipFile zip (input);

            if (zip.getNumEntries() == 0)
                return Result::fail ("The downloaded file wasn't a valid JUCE file!");

            unzipTarget = targetFolder;

            if (unzipTarget.exists())
            {
                isUsingTempFolder = true;
                unzipTarget = targetFolder.getNonexistentSibling();

                if (! unzipTarget.createDirectory())
                    return Result::fail ("Couldn't create a folder to unzip the new version!");
            }

            Result r (zip.uncompressTo (unzipTarget));

            if (r.failed())
            {
                if (isUsingTempFolder)
                    unzipTarget.deleteRecursively();

                return r;
            }
        }

        if (isUsingTempFolder)
        {
            File oldFolder (targetFolder.getSiblingFile (targetFolder.getFileNameWithoutExtension() + "_old")
                                        .getNonexistentSibling());

            if (! targetFolder.moveFileTo (oldFolder))
            {
                unzipTarget.deleteRecursively();
                return Result::fail ("Could not remove the existing folder!");
            }

            if (! unzipTarget.moveFileTo (targetFolder))
            {
                unzipTarget.deleteRecursively();
                return Result::fail ("Could not overwrite the existing folder!");
            }
        }

        return Result::ok();
    }

/*
 * The directory hierarchy looks like this:
 * "outputDir" and "assetRoot" are existing directories.
 *
 * On success, "bundle->numPackages" will be the number of Zip packages
 * we created.
 */
status_t writeAPK(Bundle* bundle, int fd, const sp<OutputSet>& outputSet, bool isOverlay)
{
    #if BENCHMARK
    fprintf(stdout, "BENCHMARK: Starting APK Bundling \n");
    long startAPKTime = clock();
    #endif /* BENCHMARK */

    status_t result = NO_ERROR;
    ZipFile* zip = NULL;

    status_t status;
    zip = new ZipFile;
    status = zip->openfd(fd, ZipFile::kOpenReadWrite);
    if (status != NO_ERROR) {
        fprintf(stderr, "ERROR: unable to open file as Zip file for writing\n");
        result = PERMISSION_DENIED;
        goto bail;
    }

    result = writeAPK(bundle, zip, "file_descriptor", outputSet, isOverlay);

    if (result != NO_ERROR) {
        fprintf(stderr, "ERROR: Writing apk failed\n");
        goto bail;
    }

    /* anything here? */
    if (zip->getNumEntries() == 0) {
        if (bundle->getVerbose()) {
            printf("Archive is empty -- removing\n");
        }
        delete zip;        // close the file so we can remove it in Win32
        zip = NULL;
        close(fd);
    }

    assert(result == NO_ERROR);

bail:
    delete zip;        // must close before remove in Win32
    close(fd);
    if (result != NO_ERROR) {
        if (bundle->getVerbose()) {
            printf("Removing archive due to earlier failures\n");
        }
    }

    if (result == NO_ERROR && bundle->getVerbose())
        printf("Done!\n");

    #if BENCHMARK
    fprintf(stdout, "BENCHMARK: End APK Bundling. Time Elapsed: %f ms \n",(clock() - startAPKTime)/1000.0);
    #endif /* BENCHMARK */
    return result;
}

bool TextureHandler::Load (const char *zip) 
{
	FILE *f = fopen (zip, "rb");

	if (f) {
		ZipFile *zf = new ZipFile;
		if (zf->Init (f) == RET_FAIL) {
			logger.Trace (NL_Error, "Failed to load zip archive %s\n", zip);
			fclose (f);
			return false;
		}

		const char *imgExt[]={ "bmp", "jpg", "tga", "png", "dds", "pcx", "pic", "gif", "ico", 0 };

		// Add the zip entries to the texture set
		for (int a=0;a<zf->GetNumFiles ();a++)
		{
			char tempFile[64];
			zf->GetFilename (a, tempFile, sizeof(tempFile));

			char *ext=FixTextureName (tempFile);
			if (ext)
			{
				int x=0;
				for (x=0;imgExt[x];x++)
					if (!strcmp(imgExt[x],ext)) break;

				if (!imgExt[x])
					continue;

				if (textures.find(tempFile) != textures.end())
					continue;

				TexRef ref;
				ref.zip = zips.size();
				ref.index = a;
				ref.texture = LoadTexture (zf,a, tempFile);

				if(textures.find(tempFile)!=textures.end())
					logger.Trace(NL_Debug,"Texture %s already loaded\n", tempFile);

				TexRef &tr = textures[tempFile];
				tr.texture = ref.texture;
				tr.index = a;;
				tr.zip = zips.size();
			}
		}

		fclose (f);

		zips.push_back (zf);
	}

	return false;
}

int main(int argc, char** argv) {
    ZipFile *zipfile;
        zipfile=new ZipFile("啊.zip");
        zipfile->open();
qDebug()<<zipfile->readFileList();
qDebug()<<zipfile->readFile(zipfile->readFileList().at(0))<<"a";
qDebug()<<zipfile->readFile(zipfile->readFileList().at(3))<<"b";
qDebug()<<"C";
return 0;

}

    Result unzip (const ModuleList::Module& m, const MemoryBlock& data)
    {
        setStatusMessage ("Installing " + m.uid + "...");

        MemoryInputStream input (data, false);
        ZipFile zip (input);

        if (zip.getNumEntries() == 0)
            return Result::fail ("The downloaded file wasn't a valid module file!");

        return zip.uncompressTo (targetList.getModulesFolder(), true);
    }

Handle<Value> ZipFile::readFile(const Arguments& args) {
    HandleScope scope;

    if (args.Length() < 2)
        return ThrowException(Exception::TypeError(
                                  String::New("requires two arguments, the name of a file and a callback")));

    // first arg must be name
    if (!args[0]->IsString())
        return ThrowException(Exception::TypeError(
                                  String::New("first argument must be a file name inside the zip")));

    // last arg must be function callback
    if (!args[args.Length()-1]->IsFunction())
        return ThrowException(Exception::TypeError(
                                  String::New("last argument must be a callback function")));

    std::string name = TOSTR(args[0]);

    ZipFile* zf = ObjectWrap::Unwrap<ZipFile>(args.This());

    closure_t *closure = new closure_t();
    closure->request.data = closure;

    // libzip is not threadsafe so we cannot use the zf->archive_
    // instead we open a new zip archive for each thread
    struct zip *za;
    int err;
    char errstr[1024];
    if ((za = zip_open(zf->file_name_.c_str() , 0, &err)) == NULL) {
        zip_error_to_str(errstr, sizeof(errstr), err, errno);
        std::stringstream s;
        s << "cannot open file: " << zf->file_name_ << " error: " << errstr << "\n";
        zip_close(za);
        return ThrowException(Exception::Error(
                                  String::New(s.str().c_str())));
    }

    closure->zf = zf;
    closure->za = za;
    closure->error = false;
    closure->name = name;
    closure->cb = Persistent<Function>::New(Handle<Function>::Cast(args[args.Length()-1]));
    uv_queue_work(uv_default_loop(), &closure->request, Work_ReadFile, Work_AfterReadFile);
    uv_ref(uv_default_loop());
    zf->Ref();
    return Undefined();
}

    void createSVGDrawable()
    {
        lastSVGLoadTime = Time::getCurrentTime();

        MemoryInputStream iconsFileStream (BinaryData::icons_zip, BinaryData::icons_zipSize, false);
        ZipFile icons (&iconsFileStream, false);

        // Load a random SVG file from our embedded icons.zip file.
        const ScopedPointer<InputStream> svgFileStream (icons.createStreamForEntry (Random::getSystemRandom().nextInt (icons.getNumEntries())));

        if (svgFileStream != nullptr)
        {
            svgDrawable = dynamic_cast <DrawableComposite*> (Drawable::createFromImageDataStream (*svgFileStream));

            if (svgDrawable != nullptr)
            {
                // to make our icon the right size, we'll set its bounding box to the size and position that we want.
                svgDrawable->setBoundingBox (RelativeParallelogram (Point<float> (-100, -100),
                                                                    Point<float> (100, -100),
                                                                    Point<float> (-100, 100)));
            }
        }
    }

//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-//
int main ( int argc , char **argv)
{
    if(argc != 2)
    {
        cout << "Usage: " << argv[0] << " <file name>" << endl;
        return 0;
    }

    ZipFile zfile(argv[1]);
    
    /// Zip a file
    cout << "Original File Size: " << zfile.size() << " Bytes" << endl;

    /// Compress file
    ZipFile czf = zfile.compress(zfile.getPath() + ".gz");
    cout << "Compressed File Size: " << czf.size() << " Bytes" << endl;

    /// Decompress file
    ZipFile dzf = czf.decompress(czf.getPath() + ".decom");
    cout << "Decompressed File Size: " << dzf.size() << " Bytes" << endl;
    cout << "Ratio: " << (1.f - (float)czf.size() / (float)dzf.size()) * 100.f << "%" << endl;
    
    /// Zip a buffer
    ZipMemory<GraVitoN::guchar> buff(256);
    buff.zero();
    
    for(size_t i=0; i<buff.size(); ++i)
        buff[i] =  (i % ('z' - 'a' + 1)) + 'a';

    cout << endl;
    cout << "Original buff: '" << buff << "'" << endl;

    /// Compress buffer
    ZipMemory<unsigned char> izbuff, ozbuff;
    ozbuff = buff.compress();
    cout << "Compressed buffer size: " << ozbuff.size() << " Bytes" << endl;

    /// Decompress buffer
    // cout << "Compressed Buffer: '" << GraVitoN::Utils::OptParser::hexToStr(izbuff, ib_size) << "'" << endl;
    izbuff = ozbuff.decompress();
    cout << "Decompressed Buffer Size: " << izbuff.size() << " Bytes" << endl;
    cout << "Decompressed Buffer: '" << izbuff << "'" << endl;
    cout << "Ratio: " << (1.f - (float)ozbuff.size() / (float)izbuff.size()) * 100.f << "%" << endl;
    
    cout << "Result: " << ( (buff.toString() == izbuff.toString()) ? ("Matched") : ("UNMATCHED") ) << endl;
    return 0;
}

void FFMS_Track::Write(ZipFile &stream) const {
    stream.Write<uint8_t>(TT);
    stream.Write(TB.Num);
    stream.Write(TB.Den);
    stream.Write<int32_t>(MaxBFrames);
    stream.Write<uint8_t>(UseDTS);
    stream.Write<uint8_t>(HasTS);
    stream.Write<uint64_t>(size());

    if (empty()) return;

    FrameInfo temp{};
    for (size_t i = 0; i < size(); ++i)
        WriteFrame(stream, Frames[i], i == 0 ? temp : Frames[i - 1], TT);
}

Drawable* ResourceLoader::createSVGDrawable(const String& filename)
{
	initObjectIconMap();

    if (iconsFromZipFile.size() == 0)
    {
        // If we've not already done so, load all the images from the zip file..
        MemoryInputStream iconsFileStream (BinaryData::icons_zip, BinaryData::icons_zipSize, false);
        ZipFile icons (&iconsFileStream, false);

        for (int i = 0; i < icons.getNumEntries(); ++i)
        {
            ScopedPointer<InputStream> svgFileStream (icons.createStreamForEntry (i));

            if (svgFileStream != 0)
            {
                iconNames.add (icons.getEntry(i)->filename);
                iconsFromZipFile.add (Drawable::createFromImageDataStream (*svgFileStream));
            }
        }
    }

    return iconsFromZipFile [iconNames.indexOf (filename)];//->createCopy();
}