December  7, 2004, Dr. Brian Fristensky, University of Manitoba
 Description: Customize local copy of BIRCH documentation by 
 converting URLs and other strings in HTML files to correspond 
 to local files and directory structures.
 Synopsis: customdoc.py oldstrings newstrings htmldirs
 Files: oldstrings      old strings to be replaced
       newstrings      new strings to replace old strings
       htmldirs        directories in which to change HTML files
 
 
@modified: May 26 2010
@author: Dale Hamel
@contact: umhameld@cc.umanitoba.ca

Modules
		os re sys

Classes
		Parameters   class Parameters       Methods defined here: __init__(self) Initializes arguments:         OLDSTRFN=""         NEWSTRFN=""         DIRFN="" Then calls read_args() to fill in their values from command line read_args(self) Reads command line arguments into a Parameter object

Functions
		change_file(htmlfn) Run through infile, changing old URLs to new URLs Note that these changes are consecutive. However, lines containing PROTECT are not changed. get_list(fn) Read in old and new strings, striping  leading and trailing whitespace, including newline characters. main() Called when not in documentation mode. traverse(P) Generates a list of all files and directories in current directory, then recursively visits all sub-directories and lists HTML files

Data
		BEGIN_DELETE = '<!-- BEGIN delete -->' BEGIN_REPLACE = '<!-- BEGIN replace name="' BM = <birchlib.Birchmod instance> DIRLIST = None END_DELETE = '<!-- END delete -->' END_REPLACE = '<!-- END replace -->' NEWLIST = None OLDLIST = None PROGRAM = 'customdoc.py: ' PROTECT = "<!-- DON'T CHANGE -->" TEMPFN = '18165.TEMP' USAGE = '\n\t USAGE: customdoc.py oldstrings newstrings htmldirs' blib = '/home/u11/umhameld/public_html/local/pylib/'