pickfile

#!/bin/bash
#Defines a pickfile function
#WARNING: Assumes there is no whitespace in the file names
function pickfile(){
    local FILES=${1:-"*"}
    local __result=${2:-PICKFILECHOICE}
    local CT=0
    local NF=`echo ${FILES} | tr " " "\n" | wc -l`

    #Default answer
    eval $__result=""

    #Did we find any matches
    if [ ${NF} -eq 0 ]
    then
	echo "Error in pickfile: No matches found" > /dev/stderr
    #Only one match
    elif [ ${NF} -eq 1 ]
    then
	eval $__result=${FILES}
    else
	for i in `echo ${FILES} | tr " " "\n"`
	do
	    CT=$(($CT+1))
	    echo ${CT}"   "${i}
	done

        #Read option
	read -p "Please pick a file by number: " CHOICE

        #Check answer
	if [ ${CHOICE} -gt ${CT} ]
	then
	    echo "Error in pickfile: Invalid selection" > /dev/stderr
	fi
	
        #Set return variable
	eval $__result=`echo ${FILES} | tr " " "\n" | head -n ${CHOICE} | tail -n 1`
    fi
}