DAMASK_EICMD/processing/post/deleteColumn.py

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#!/usr/bin/env python
# -*- coding: UTF-8 no BOM -*-
import os,sys,string
from optparse import OptionParser
import damask
scriptID = string.replace('$Id$','\n','\\n')
2014-12-19 00:56:52 +05:30
scriptName = os.path.splitext(scriptID.split()[1])[0]
# --------------------------------------------------------------------
# MAIN
# --------------------------------------------------------------------
parser = OptionParser(option_class=damask.extendableOption, usage='%prog options [file[s]]', description = """
Remove column(s) containing scalar, vectorial, and/or tensorial data.
""", version = scriptID)
parser.add_option('-v','--vector', dest='vector', action='extend', metavar='<string LIST>',
help='heading of columns containing 3x1 vector field values')
parser.add_option('-t','--tensor', dest='tensor', action='extend', metavar='<string LIST>',
help='heading of columns containing 3x3 tensor field values')
parser.add_option('-s','--special', dest='special', action='extend', metavar='<string LIST>',
help='heading of columns containing field values of special dimension')
parser.add_option('-d','--dimension', dest='N', type='int', metavar='int',
help='dimension of special field values [%default]')
parser.set_defaults(vector = [])
parser.set_defaults(tensor = [])
parser.set_defaults(special = [])
parser.set_defaults(N = 1)
(options,filenames) = parser.parse_args()
if len(options.vector) + len(options.tensor) + len(options.special)== 0:
parser.error('no data column specified...')
datainfo = { # list of requested labels per datatype
'vector': {'len':3,
'label':[]},
'tensor': {'len':9,
'label':[]},
'special': {'len':options.N,
'label':[]},
}
if options.vector != None: datainfo['vector']['label'] += options.vector
if options.tensor != None: datainfo['tensor']['label'] += options.tensor
if options.special != None: datainfo['special']['label'] += options.special
# ------------------------------------------ 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:]))
# --------------- figure out columns to delete ----------------------------------------------------
columns = []
for datatype,info in datainfo.items():
for label in info['label']:
key = {True :'1_%s',
False:'%s' }[info['len']>1]%label
if key not in table.labels:
sys.stderr.write('column %s not found...\n'%key)
else:
columns.append([table.labels.index(key),info['len']]) # remember column and extent of requested data
if (info['len'] == 1):
table.labels.remove(label) # remove single column head
else:
for i in xrange(info['len']):
table.labels.remove('%i_%s'%(i+1,label)) # remove multidimensional column head
columns.sort(key=lambda x:x[0],reverse=True) # sort from highest column to delete backwards
# ------------------------------------------ assemble header ---------------------------------------
table.head_write()
# ------------------------------------------ process data ------------------------------------------
outputAlive = True
while outputAlive and table.data_read(): # read next data line of ASCII table
for col,len in columns: # loop over removal candidates
del table.data[col:col+len] # remove each associated entry
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