#!/bin/sh

# This script recursively changes all file/directory names using the filter $*
# (filter includes program and arguments to do filtering.)

# Iain Murray (c) July 2003. http://www.iainmurray.net

# Now this is embarassingly complicated. Is shell really this fiddly, or have I
# made this far too hard for myself?


# This stops script on any errors:
set -e # not doing so would be very dangerous


IFS="
" # needed so that read doesn't through away spaces

# loop through all file+directory names, but ignore '.'
find . -maxdepth 1 | while read a
	do if [ "$a" != . ]
		
		# translate and rename files+directories
		then b=`echo "$a" | $*`
		if [ "$a" != "$b" ]
			then mv "$a" "$b"
		fi

		# recurse into directories, but not if it is a link, because
		# could get into infinite cycles
		if [ -d "$b" -a ! -h "$b" ]
			then cd "$b"
			$0 $*
			cd ..
		fi
	fi
done