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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 <src/RootCompressionSettings.h>`

## Public Member Functions
| RootCompressionSettings (const std::string &settings)
| Standard constructor. More...
int | level () const
| Get the level. More...

## Private Attributes
int | m_level
| The cached ROOT compression level int. More...

## 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 20 of file RootCompressionSettings.h.

## Constructor & Destructor Documentation

RootHistCnv::RootCompressionSettings::RootCompressionSettings | ( | const std::string & | settings | ) |

Standard constructor.

Definition at line 19 of file RootCompressionSettings.cpp.

20 : m_level( ROOT::CompressionSettings( ROOT::kZLIB, 1 ) )
21 {
22 const std::string::size_type idx = settings.find( ':' );
23 if ( idx != std::string::npos ) {
24 // Get compression algorithm type
25 const std::string alg = settings.substr( 0, idx );
26 ROOT::ECompressionAlgorithm alg_code = ROOT::kUseGlobalSetting;
27 if ( alg == "ZLIB" ) {
28 alg_code = ROOT::kZLIB;
29 } else if ( alg == "LZMA" ) {
30 alg_code = ROOT::kLZMA;
31 } else {
32 throw std::runtime_error( "ERROR: Unknown ROOT compression algorithm:" + alg );
33 }
34
35 // get compression level
36 const std::string slev = settings.substr( idx + 1 );
37 const int ilev = std::stoi( slev );
38
39 // set the level
40 m_level = ROOT::CompressionSettings( alg_code, ilev );
41 }
42 }
std::string
STL class.
std::runtime_error
STL class.
std::string::find
T find(T...args)
std::string::substr
T substr(T...args)
std::stoi
T stoi(T...args)
RootHistCnv::RootCompressionSettings::m_level
int m_level
The cached ROOT compression level int.
Definition: RootCompressionSettings.h:23

## Member Function Documentation

int RootHistCnv::RootCompressionSettings::level | ( |  | ) | const
| inline

Get the level.

Definition at line 30 of file RootCompressionSettings.h.

30 { return m_level; }
RootHistCnv::RootCompressionSettings::m_level
int m_level
The cached ROOT compression level int.
Definition: RootCompressionSettings.h:23

## Member Data Documentation

int RootHistCnv::RootCompressionSettings::m_level
| private

The cached ROOT compression level int.

Definition at line 23 of file RootCompressionSettings.h.

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

- RootHistCnv/src/RootCompressionSettings.h
- RootHistCnv/src/RootCompressionSettings.cpp