#include <FileBlob.h>

Public Member Functions
	FileBlob ()

	FileBlob (const std::string &fname, bool zip)
	constructor from file to read More...

	FileBlob (std::istream &is, bool zip)
	constructor from stream to read More...

std::vector< unsigned char > *	getUncompressedBlob () const
	i didn't want to do two copies ... hope this works. More...

void	getUncompressedBlob (std::vector< unsigned char > &myblobcopy) const

bool	isCompressed () const

void	read (const std::string &)
	read from real file More...

void	read (std::istream &)
	read from istream More...

int	size () const

void	write (const std::string &) const
	write to real file More...

void	write (std::ostream &) const
	write to ostream More...

	~FileBlob ()

Static Private Member Functions
static unsigned int	computeFileSize (const std::string &)

static unsigned int	computeStreamSize (std::istream &)

Private Attributes
std::vector< unsigned char >	blob

bool	compressed

unsigned int	isize

Detailed Description

Definition at line 8 of file FileBlob.h.

Constructor & Destructor Documentation

FileBlob::FileBlob ( )

inline

Definition at line 11 of file FileBlob.h.

11 {};

FileBlob::FileBlob	(	const std::string &	fname,
		bool	zip
	)

constructor from file to read

Definition at line 9 of file FileBlob.cc.

References blob, compressed, computeFileSize(), isize, and read().

                                                    :isize(0){
   compressed = zip;
   /*  
   std::cout << "isize = " << isize 
         << "  zip = " << (zip? "true" : "false")
         << std::endl;
   */
   if (isize==0) isize= computeFileSize(fname);
   // std::cout << "isize = " << isize << std::endl;
   blob.reserve(isize);
   read(fname);
 }

FileBlob::FileBlob	(	std::istream &	is,
		bool	zip
	)

constructor from stream to read

Definition at line 21 of file FileBlob.cc.

References blob, compressed, computeStreamSize(), isize, and read().

                                           :isize(0) {
   compressed = zip;
   if (isize==0) isize= computeStreamSize(is);
   blob.reserve(isize);
   read(is);
 }

FileBlob::~FileBlob ( )

inline

Definition at line 17 of file FileBlob.h.

17 {};

Member Function Documentation

unsigned int FileBlob::computeFileSize ( const std::string & fname )

staticprivate

Definition at line 123 of file FileBlob.cc.

References computeStreamSize(), and compare_using_db::ifile.

Referenced by FileBlob().

                                                               {
   unsigned int is=0;
   std::ifstream ifile(fname.c_str());
   if (!ifile) { edm::LogError("FileBlob")<< "file " << fname << " does not exist...";}
   else is = computeStreamSize(ifile);
   ifile.close();
   return is;
 }

unsigned int FileBlob::computeStreamSize ( std::istream & is )

staticprivate

Definition at line 132 of file FileBlob.cc.

References trackerHits::c.

Referenced by computeFileSize(), and FileBlob().

                                                         {
   unsigned int rs=0;
   char c;
   while (is.get(c)) rs++;
   is.clear();
   is.seekg(0);
   return rs;
 }

std::vector< unsigned char > * FileBlob::getUncompressedBlob ( ) const

i didn't want to do two copies ... hope this works.

Definition at line 74 of file FileBlob.cc.

References blob, compressed, isize, and spu::zerr().

                                                               { 
   std::vector<unsigned char>*  newblob;
   if(compressed)
   {
     newblob = new std::vector<unsigned char>(isize);
     uLongf destLen = newblob->size();
     //    std::cout<<"Store isize = "<<isize<<"; newblob->size() = "<<newblob->size()<<"; destLen = "<<destLen<<std::endl;
     int zerr =  uncompress(&*(newblob->begin()),  &destLen,
                            &*blob.begin(), blob.size());
     if (zerr!=0 || newblob->size()!=destLen) 
       edm::LogError("FileBlob")<< "uncompressing error " << zerr
                                    << " original size was " << isize
                                    << " new size is " << destLen;
   }else{
     newblob = new std::vector<unsigned char>(blob);
   }
   return newblob;
  }

void FileBlob::getUncompressedBlob ( std::vector< unsigned char > & myblobcopy ) const

Definition at line 93 of file FileBlob.cc.

References blob, compressed, isize, and spu::zerr().

                                                                                {
   if(compressed)
   {
     myblobcopy.reserve(isize);
     uLongf destLen = isize;
     int zerr =  uncompress(&*myblobcopy.begin(),  &destLen,
                &*blob.begin(), blob.size());
     if (zerr!=0 || myblobcopy.size()!=destLen) 
       edm::LogError("FileBlob")<< "uncompressing error " << zerr
                                    << " original size was " << isize
                                    << " new size is " << destLen;
   }else{
     myblobcopy = blob;
   }
   
 }

bool FileBlob::isCompressed ( ) const

inline

Definition at line 29 of file FileBlob.h.

References compressed.

29 {return compressed;};

FileBlob::compressed

bool compressed

Definition: FileBlob.h:41

void FileBlob::read ( const std::string & fname )

read from real file

Definition at line 110 of file FileBlob.cc.

References compare_using_db::ifile.

Referenced by FileBlob(), Vispa.Plugins.EdmBrowser.EdmDataAccessor.EdmDataAccessor::goto(), and Vispa.Plugins.EdmBrowser.EdmDataAccessor.EdmDataAccessor::setFilterBranches().

                                            {
      std::ifstream ifile(fname.c_str());
      if (!ifile) { edm::LogError("FileBlob")<< "file " << fname << " does not exist...";}
      else read(ifile);
      ifile.close();
 }

void FileBlob::read ( std::istream & is )

read from istream

Definition at line 28 of file FileBlob.cc.

References blob, trackerHits::c, compressed, recoMuon::in, isize, and spu::zerr().

Referenced by Vispa.Plugins.EdmBrowser.EdmDataAccessor.EdmDataAccessor::goto(), and Vispa.Plugins.EdmBrowser.EdmDataAccessor.EdmDataAccessor::setFilterBranches().

                                    {
   if(compressed){
     std::vector<unsigned char> in;
     in.reserve(isize);
     char c;
     while (is.get(c))
       in.push_back((unsigned char)c);
     /*
     for(int i=0;i<in.size();i++){
       std::cout<<in[i];
     }
     std::cout<<std::endl;
     */
     blob.resize(isize);
     uLongf destLen = compressBound(in.size());
     int zerr =  compress2(&*blob.begin(), &destLen,
                           &*in.begin(), in.size(),
                           9);
     if (zerr!=0) edm::LogError("FileBlob")<< "Compression error " << zerr;
     blob.resize(destLen);  
   }else{
     //std::cout << "reading uncompressed" << std::endl;
     char c;
     while (is.get(c))
       blob.push_back( (unsigned char)c);
     blob.resize(blob.size());
     isize=blob.size();
   }
 }

int FileBlob::size ( void ) const

inline

Definition at line 31 of file FileBlob.h.

References isize.

Referenced by popcon::DQMReferenceHistogramRootFileSourceHandler::getNewObjects(), and popcon::DQMXMLFileSourceHandler::getNewObjects().

31 {return isize;};

FileBlob::isize

unsigned int isize

Definition: FileBlob.h:42

void FileBlob::write ( const std::string & fname ) const

write to real file

Definition at line 117 of file FileBlob.cc.

References interpolateCardsSimple::ofile.

                                                   {
   std::ofstream ofile(fname.c_str());
   write(ofile);
   ofile.close();
 }

void FileBlob::write ( std::ostream & os ) const

write to ostream

Definition at line 58 of file FileBlob.cc.

References blob, compressed, isize, dbtoconf::out, and spu::zerr().

                                           {
   if(compressed){
     std::vector<unsigned char> out(isize);
     uLongf destLen = out.size();
     int zerr =  uncompress(&*out.begin(),  &destLen,
                            &*blob.begin(), blob.size());
     if (zerr!=0 || out.size()!=destLen) 
       edm::LogError("FileBlob")<< "uncompressing error " << zerr
                                    << " original size was " << isize
                                    << " new size is " << destLen;
     os.write((const char *)(&*out.begin()),out.size());
   }else{
     os.write((char *)&*blob.begin(),blob.size());
   }
 }