DAMASK_EICMD/processing/post/addDeviator.py

#!/usr/bin/env python
# -*- coding: UTF-8 no BOM -*-

import os,sys,string
from collections import defaultdict
from optparse import OptionParser
import damask

scriptID   = string.replace('$Id$','\n','\\n')
scriptName = scriptID.split()[1][:-3]

oneThird = 1.0/3.0

def deviator(m):                                                                                    # Carefull, do not change the value of m (its intent(inout)!)
  sph = oneThird*(m[0]+m[4]+m[8])
  return  [m[0] -sph, m[1],     m[2],
           m[3],      m[4]-sph, m[5],
           m[6],      m[7],     m[8]-sph]

# --------------------------------------------------------------------
#                                MAIN
# --------------------------------------------------------------------

parser = OptionParser(option_class=damask.extendableOption, usage='%prog options [file[s]]', description = """
Add column(s) containing deviator of requested tensor column(s).

""", version = scriptID)

parser.add_option('-t','--tensor',      dest='tensor', action='extend', metavar='<string LIST>',
                                        help='heading of columns containing tensor field values')
parser.add_option('-s','--spherical',   dest='hydrostatic', action='store_true',
                                        help='also add sperical part of tensor (hydrostatic component, pressure)')
parser.set_defaults(hydrostatic = False)
parser.set_defaults(tensor = [])

(options,filenames) = parser.parse_args()

if len(options.tensor) == 0:
  parser.error('no data column specified...')

datainfo = {                                                                                        # list of requested labels per datatype
             'tensor':     {'len':9,
                            'label':[]},
           }

datainfo['tensor']['label'] += options.tensor

# ------------------------------------------ setup file handles ------------------------------------
files = []
if filenames == []:
  files.append({'name':'STDIN', 'input':sys.stdin, 'output':sys.stdout, 'croak':sys.stderr})
else:
  for name in filenames:
    if os.path.exists(name):
      files.append({'name':name, 'input':open(name), 'output':open(name+'_tmp','w'), 'croak':sys.stderr})

# ------------------------------------------ loop over input files ---------------------------------
for file in files:
  if file['name'] != 'STDIN': file['croak'].write('\033[1m'+scriptName+'\033[0m: '+file['name']+'\n')
  else: file['croak'].write('\033[1m'+scriptName+'\033[0m\n')

  table = damask.ASCIItable(file['input'],file['output'],False)                                     # make unbuffered ASCII_table
  table.head_read()                                                                                 # read ASCII header info
  table.info_append(scriptID + '\t' + ' '.join(sys.argv[1:]))

  active = []
  column = defaultdict(dict)

  for label in datainfo['tensor']['label']:
    key = '1_%s'%label
    if key not in table.labels:
      file['croak'].write('column %s not found...\n'%key)
    else:
      active.append(label)
      column[label] = table.labels.index(key)                                                       # remember columns of requested data

# ------------------------------------------ assemble header ---------------------------------------
  for label in active:
    table.labels_append(['%i_dev(%s)'%(i+1,label) for i in xrange(9)])                              # extend ASCII header with new labels
    if(options.hydrostatic): table.labels_append('sph(%s)'%label)
  table.head_write()

# ------------------------------------------ process data ------------------------------------------
  outputAlive = True
  while outputAlive and table.data_read():                                                          # read next data line of ASCII table
    for label in active:
      myTensor = map(float,table.data[column[label]:
                                      column[label]+datainfo['tensor']['len']])
      table.data_append(deviator(myTensor))
      if(options.hydrostatic): table.data_append(oneThird*(myTensor[0]+myTensor[4]+myTensor[8]))
    outputAlive = table.data_write()                                                                # output processed line

# ------------------------------------------ output result -----------------------------------------
  outputAlive and table.output_flush()                                                              # just in case of buffered ASCII table

  table.input_close()                                                                               # close input ASCII table (works for stdin)
  table.output_close()                                                                              # close output ASCII table (works for stdout)
  if file['name'] != 'STDIN':
    os.rename(file['name']+'_tmp',file['name'])                                                     # overwrite old one with tmp new