#!/usr/bin/env python
# tren.py
# Copyright (c) 2010 TundraWare Inc.
# For Updates See: http://www.tundraware.com/Software/tren
# Program Information
PROGNAME = "tren.py"
RCSID = "$Id: tren.py,v 1.105 2010/01/23 00:38:55 tundra Exp $"
VERSION = RCSID.split()[2]
# Copyright Information
CPRT = "(c)"
DATE = "2010"
OWNER = "TundraWare Inc."
COPYRIGHT = "Copyright %s %s %s " % (CPRT, DATE, OWNER)
#----------------------------------------------------------#
# Variables User Might Change #
#----------------------------------------------------------#
#------------------- Nothing Below Here Should Need Changing ------------------#
#----------------------------------------------------------#
# Imports #
#----------------------------------------------------------#
import getopt
import os
import sys
#----------------------------------------------------------#
# Aliases & Redefinitions #
#----------------------------------------------------------#
#----------------------------------------------------------#
# Constants & Literals #
#----------------------------------------------------------#
#####
# Constants
#####
MAXINCLUDES = 50 # Maximum number of includes allowed
#####
# Literals
#####
ALL = "All" # Rename target is whole filename
EXT = "Ext" # Rename target is extension
EXTDELIM = "." # Extension delimeter
INCL = "-I" # Include file command line option
NAM = "Nam" # Rename target is name
#----------------------------------------------------------#
# Prompts, & Application Strings #
#----------------------------------------------------------#
#####
# Debug Messages
#####
dDEBUG = "DEBUG"
#####
# Error Messages
#####
eBADARG = "Invalid or malformed command line argument!"
eBADINCL = "%s Option Missing Filename Specification!" % INCL
eERROR = "ERROR"
eFILEOPEN = "Cannot Open File '%s': %s!"
eTOOMANYINC = "Too Many Includes! (Max Is %d) Possible Circular Reference?" % MAXINCLUDES
#####
# Informational Messages
#####
#####
# Usage Prompts
#####
uTable = [PROGNAME + " " + VERSION + " - %s\n" % COPYRIGHT,
"usage: " + PROGNAME + " [-1abCcdEefghqtvXx] [-I file] [-l string] [-r old=new]... file|dir file|dir ...",
" where,",
" -1 Rename only the first instance of the specified string (Default)",
" -a Rename within the entire file or directory name (Default)",
" -C Do case-sensitive renaming (Default)",
" -c Collapse case when doing string substitution.",
" -d Dump debugging information",
" -e Only perform renaming within extension portion of or directory name.",
" -E Continue renaming even after an error is encountered",
" -f Force renaming even if target file or directory name already exists.",
" -g Replace all instances (global rename) of the old string with the new.",
" -h Print help information.",
" -I file Include command line arguments from file",
" -l string File extension delimiter string. (Default: .)",
" -q Quiet mode, do not show progress.",
" -r <old=new> Replace old with new in file or directory names.",
" -t Test mode, don't rename, just show what the program *would* do",
" -v Print detailed program version information and exit.",
" -X Treat the renaming strings literally (Default)",
" -x Treat the old replacement string as a Python regular expression",
]
#----------------------------------------------------------#
# Global Variables & Data Structures #
#----------------------------------------------------------#
# Program toggle and option defaults
DEBUG = False # Debugging off
CASE = True # Search is case-sensitive
ERRORCONTINUE = False # Do not continue after error
EXTDELIM = EXTDELIM # Extension Delimiter
FORCERENAM = False # Do not rename if target already exists
GLOBAL = False # Only rename first instance of old string
QUIET = False # Display progress
REGEX = False # Do not treat old string as a regex
TARGET = ALL # Can be "All", "Name", or "Ext"
TESTMODE = False
#--------------------------- Code Begins Here ---------------------------------#
#----------------------------------------------------------#
# Object Base Class Definitions #
#----------------------------------------------------------#
#----------------------------------------------------------#
# Supporting Function Definitions #
#----------------------------------------------------------#
#####
# Turn A List Into Columns With Space Padding
#####
def ColumnPad(list, padchar=" ", padwidth=20):
retval = ""
for l in list:
l = str(l)
retval += l + ((padwidth - len(l)) * padchar)
return retval.strip()
# End of 'ColumnPad()'
#####
# Print A Debug Message
#####
def DebugMsg(msg):
PrintStderr(PROGNAME + " " + VERSION + " " + dDEBUG + ": " + msg)
# End of 'DebugMsg()'
#####
# Dump The State Of The Program
#####
def DumpState():
# Dump the command line
DebugMsg(ColumnPad(["Command Line", sys.argv]))
DebugMsg(ColumnPad(["$TREN", os.getenv("TREN")]))
DebugMsg(ColumnPad(["Resolved Options", OPTIONS]))
# Names of all the state variables we want dumped
state = [
"DEBUG",
"CASE",
"ERRORCONTINUE",
"EXTDELIM",
"FORCERENAM",
"GLOBAL",
"QUIET",
"REGEX",
"TARGET",
"TESTMODE",
]
for k in state:
DebugMsg(ColumnPad([k, eval(k)]))
# End of 'DumpState()'
#####
# Print An Error Message
#####
def ErrorMsg(emsg):
PrintStderr(PROGNAME + " " + VERSION + " " + eERROR + ": " + emsg)
# End of 'ErrorMsg()'
#####
# Print To stderr
#####
def PrintStderr(msg, trailing="\n"):
sys.stderr.write(msg + trailing)
# End of 'PrintStderr()'
#####
# Print To stdout
#####
def PrintStdout(msg, trailing="\n"):
sys.stdout.write(msg + trailing)
# End of 'PrintStdout'
#####
# Print Usage Information
#####
def Usage():
for line in uTable:
PrintStdout(line)
# End of 'Usage()'
#----------------------------------------------------------#
# Program Entry Point #
#----------------------------------------------------------#
#####
# Command Line Preprocessing
#
# Some things have to be done *before* the command line
# options can actually be processed. This includes:
#
# 1) Prepending any options specified in the environment variable.
#
# 2) Resolving any include file references
#
# 3) Building the data structures that depend on the file/dir names
# specified for renaming. We have to do this first, because
# -r renaming operations specified on the command line will
# need this information if they make use of renaming tokens.
#
#####
# Process any options set in the environment first, and then those
# given on the command line
OPTIONS = sys.argv[1:]
envopt = os.getenv(PROGNAME.split(".py")[0].upper())
if envopt:
OPTIONS = envopt.split() + OPTIONS
# Resolve include file references allowing for nested includes.
# This has to be done here separate from the command line options so
# that getopt() processing below will "see" the included statements.
NUMINCLUDES = 0
while " ". join(OPTIONS).find(INCL) > -1:
# Get the index of the next include to process.
# It cannot be the last item because this means the filename
# to include is missing.
i = OPTIONS.index(INCL)
if i == len(OPTIONS)-1:
ErrorMsg(eBADINCL)
sys.exit(1)
file = OPTIONS[i+1] ; lhs = OPTIONS[:i] ; rhs = OPTIONS[i+2:]
# Keep track of- and limit the number of includes allowed
NUMINCLUDES += 1
if NUMINCLUDES >= MAXINCLUDES:
ErrorMsg(eTOOMANYINC)
sys.exit(1)
# Replace insert option on the command line with that file's contents
try:
n = []
f = open(file)
for l in f.readlines():
n += l.split()
f.close()
OPTIONS = lhs + n + rhs
except IOError as e:
ErrorMsg(eFILEOPEN % (file, e.args[1]))
sys.exit(1)
# Now process the command line options
try:
opts, args = getopt.getopt(OPTIONS, '1abbCcdEefghl:qr:tvXx]')
except getopt.GetoptError:
ErrorMsg(eBADARG)
Usage()
sys.exit(1)
for opt, val in opts:
if opt == "-1":
GLOBAL = False
if opt == "-a":
TARGET = ALL
if opt == "-b":
TARGET = NAM
if opt == "-C":
CASE = True
if opt == "-c":
CASE = False
if opt == "-d":
DumpState()
if opt == "-E":
ERRORCONTINUE = True
if opt == "-e":
TARGET = EXT
if opt == "-f":
FORCERENAM = True
if opt == "-g":
GLOBAL = True
if opt == "-h":
Usage()
sys.exit(0)
if opt == "-l":
EXTDELIM = val
if opt == "-q":
QUIET = True
if opt == "-r":
pass
if opt == "-t":
TESTMODE = True
if opt == "-v":
PrintStdout(RCSID)
sys.exit(0)
if opt == "-X":
REGEX = False
if opt == "-x":
REGEX = True
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