fullwidth shell script

fw

#!/bin/bash
# script for converting text to fullwidth characters on the clipboard
# don't try to enter anything that doesn't have a fullwidth equivalent
# usage: fw test
# result: the clipboard now contains ｔｅｓｔ

words=$*
for (( i=0; i<${#words}; i++ )); do
	char="${words:$i:1}"
	if [[ "${char}" == " " ]]; then
		# for some reason, the ideographic space is not in the fullwidth block
		# the mysteries of unicode, I suppose.
		printf "　"
	else
		# handle characters that aren't spaces, transforming them
		# into their fullwidth equivalent (hope they have it)
		codepoint=$(printf '%x' "'$char")
		fwcp=$(printf '\\uFF%02x' $((0x$codepoint - 0x20)))
		printf $fwcp
	fi
done | xsel -ib