2_renamer.py~

#!/usr/bin/python

# pseudocode definition
# imports
import sys
import os
import getopt

# define constants
INPUT_REGEX_SPLIT_TOKEN = '||'
PARSE_STRING_VARIABLE_TOKEN = '%'

# main program
def main(argv):
	# define command line option strings for getopts
	cmdLineShortOpts = 'hvd:s:m:r:f:'
	cmdLineLongOpts = ['help', 'debug', 'dir=', 'search=', 'mask=', 'replace=', 'files=']
	global _DEBUG
	_DEBUG = False
	# process command line options
	try:
		process_args(argv)
	# TODO: change this to reflect argparse
	except getopt.GetoptError:
		usage()
		if _DEBUG:
			print "exiting due to GetoptError"
		sys.exit(2)

# parse arguments
# 	help
#		debug
#		directory
#		string_identifiers
#		replace_chars
#		rename_mask
#		file_list
def process_args(args):

	opts, args = getopt.getopt(argv, cmdLineShortOpts, cmdLineLongOpts)
	print 'printing opts'
	for o in opts: print o

	# process command-line options
	for opt, arg in opts:
		if opt in ('v', '--debug'):
			# turn on debugging output
			_DEBUG = True 
			
		elif opt in('-h', '--help'):
			# show usage help
			usage()
			sys.exit()
		elif opt in ('d', '--dir'):
			# set directory to first command line option
			dirPath = arg
			if _DEBUG:
				print 'just set dirPath'
		elif opt in ('s', '--search'):
			# split the input regex string
			parsestrings = split_input_regex_string(arg)
			searchdict = split_parse_string_variables(parsestrings)
			if _DEBUG:
				print 'just split input parse string'
		elif opt in ('m', '--mask'):
			renamemask = arg
			if _DEBUG:
				print 'just set renamemask'
		elif opt in ('r', '--replace'):
			replacestring = arg
			if _DEBUG:
				print 'just set replacestring'
		elif opt in ('f', '--files'):
			# identify list of files to rename
			fileList = arg
			if _DEBUG:
				print 'printing files'
				#for file in fileList:
				#	print file

# get directory listing, if appropriate
# return a list of files in given directory
def getfiles(dir):
	if _DEBUG:
		print "in getfiles"
	return [f for f in os.listdir(dir) if os.path.isfile(os.listdir(dir))]
# parse string_identifiers
def split_input_regex_string(instring):
	if _DEBUG:
		print 'splitting input regex string'
		print instring.split(INPUT_REGEX_SPLIT_TOKEN)
	return instring.split(INPUT_REGEX_SPLIT_TOKEN)

def split_parse_string_variables(inlist):
	vardict = {}
	for instring in inlist:
		left, right = instring.split('=')
		left = left.strip()
		right = right.strip()
		vardict[left] = [right]
	if _DEBUG:
		print 'creating parse string variables'
		for k in vardict.keys():
			print vardict[k]
	return vardict

# identify file list
# present sample renamed file
# prompt for confirmation
# rename files
# log renaming actions to text file

# print command line usage
def usage():
	print "usage()"
	pass
	#print sys.argv[0] + "USAGE HERE"


if __name__ == '__main__':
	main(sys.argv[1:])