source: CMIP6dreqbuild/trunk/src/workbook/loadcf.py @ 924

"""loadcf
------
The loadcf module reads the cf standard name table into two dictionaries:
  names[<standard_name>] = (description, canonical units)
  alias[<alias>] = standard_name
"""

import xml
import xml.dom, xml.dom.minidom

class cf(object):
  def __init__(self,fn='cf-standard-name-table_v39.xml'):
    vocabs = xml.dom.minidom.parse( fn )

    el = vocabs.getElementsByTagName( 'entry' )
    self.names = {}
    self.alias = {}

    for e in el:
      sn = e.getAttribute('id')
      unitsE = e.getElementsByTagName( 'canonical_units' )
      u = ''
      if len(unitsE) > 0 and type( unitsE[0] ) != type(None):
        c1 = unitsE[0].firstChild
        if type( c1 ) != type(None):
          u = c1.data
      descE = e.getElementsByTagName( 'description' )
      d = ''
      if len(descE) > 0 and type( descE[0] ) != type(None):
        c1 = descE[0].firstChild
        if type( c1 ) != type(None):
          d = c1.data
    
      self.names[sn] = (d,u )
    el = vocabs.getElementsByTagName( 'alias' )
    for e in el:
      sn = e.getAttribute('id')
      x = e.getElementsByTagName( 'entry_id' )
      self.alias[sn] = x[0].firstChild.data