Class: OMX::OMXTables

Inherits:
Object
  • Object
show all
Extended by:
FFI::Library
Defined in:
lib/OpenMatriX.rb

Overview

A class to return the tables in the OMX file

Defined Under Namespace

Classes: H5GInfoT, H5_index, InvalidFile

Instance Method Summary collapse

Constructor Details

#initialize(file) ⇒ OMXTables

Returns a new instance of OMXTables.



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# File 'lib/OpenMatriX.rb', line 253

def initialize(file)
  @id = file.id
  @gId = gOpen(@id, "data",0)
end

Instance Method Details

#cast_to_H5_index(pointer) ⇒ Object 



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# File 'lib/OpenMatriX.rb', line 240

def cast_to_H5_index pointer
  H5_index.new pointer
end

#cast_to_H5GInfoT(pointer) ⇒ Object 



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# File 'lib/OpenMatriX.rb', line 229

def cast_to_H5GInfoT pointer
  H5GInfoT.new pointer
end

#getNTables ⇒ Object

A function to return the number of matrix tables. Returns an integer value of the number of tables in the matrix



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# File 'lib/OpenMatriX.rb', line 260

def getNTables()
  h5gi = cast_to_H5GInfoT(FFI::MemoryPointer.new :char, H5GInfoT.size)
  op = nTables(@gId,h5gi)
  return(h5gi[:nLinks])
end

#getTableNames ⇒ Object

A function to get the table names. Returns a string array of table names.



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# File 'lib/OpenMatriX.rb', line 267

def getTableNames()
  nT = self.getNTables()-1
  gName = FFI::MemoryPointer.new(:string)

  pl = createpl(OMX::h5P_CLS_LINK_ACCESS_ID_g)

  # Note from okiAndrew: this seems seriously kludgy, but it works.
  tN ||= []
  for t in 0..nT
    tn2o = tNames2(@gId, ".", 0, t, 0, gName, 20, pl)
    #puts "gName = #{gName.read_string()}"
    tN << gName.read_string()
  end
  return(tN)
end