RootHistCnv::RootCompressionSettings Class Reference

Simple class to decode a ROOT compression settings string, of the form '<Alg>:<level>' into the integer code to pass to ROOT. More...

#include <RootCompressionSettings.h>

Collaboration diagram for RootHistCnv::RootCompressionSettings:

Public Member Functions
	RootCompressionSettings (const std::string &settings)
	Standard constructor.
	~RootCompressionSettings ()
	Destructor.
int	level () const
	Get the level.

Private Attributes
std::string	m_compSettings
	The compression settings string.
int	m_level
	The cached ROOT compression level int.

Detailed Description

Simple class to decode a ROOT compression settings string, of the form '<Alg>:<level>' into the integer code to pass to ROOT.

Author

Chris Jones

Date

2013-10-24

Definition at line 19 of file RootCompressionSettings.h.

Constructor & Destructor Documentation

RootHistCnv::RootCompressionSettings::RootCompressionSettings

(

const std::string &

settings

)

Standard constructor.

Definition at line 24 of file RootCompressionSettings.cpp.

  : m_compSettings ( settings ),
    m_level ( ROOT::CompressionSettings(ROOT::kZLIB,1) )
{

  const std::string::size_type idx = m_compSettings.find(':');
  if ( idx != std::string::npos )
  {
    // Get compression algorithm type
    const std::string alg = m_compSettings.substr(0,idx);
    ROOT::ECompressionAlgorithm alg_code = ROOT::kUseGlobalSetting;
    if      ( alg == "ZLIB" ) { alg_code = ROOT::kZLIB; }
    else if ( alg == "LZMA" ) { alg_code = ROOT::kLZMA; }
    else
    {
      throw std::runtime_error("ERROR: Unknown ROOT compression algorithm:"+alg);
    }

    // get compression level
    const std::string slev = m_compSettings.substr(idx+1);
    const int         ilev = boost::lexical_cast<int>(slev);
    
    // set the level
    m_level = ROOT::CompressionSettings(alg_code,ilev);
  }

}

RootHistCnv::RootCompressionSettings::~RootCompressionSettings ( )

inline

Destructor.

Definition at line 28 of file RootCompressionSettings.h.

{ }

Member Function Documentation

int RootHistCnv::RootCompressionSettings::level ( ) const

inline

Get the level.

Definition at line 33 of file RootCompressionSettings.h.

{ return m_level; }

Member Data Documentation

std::string RootHistCnv::RootCompressionSettings::m_compSettings

private

The compression settings string.

Definition at line 38 of file RootCompressionSettings.h.

int RootHistCnv::RootCompressionSettings::m_level

private

The cached ROOT compression level int.

Definition at line 41 of file RootCompressionSettings.h.

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The documentation for this class was generated from the following files:

• /afs/.cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v25r2/RootHistCnv/src/RootCompressionSettings.h
• /afs/.cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v25r2/RootHistCnv/src/RootCompressionSettings.cpp