Bash script to search itunes radio channels

itunes-radio-search

#!/bin/bash
until [ -z "$1" ]; do
    case $1 in
        -u | --with-url )
            WITHURL=1
            ;;
        *)
            if [ -z "$CATEGORY" ]; then
                CATEGORY=$1
            elif [ -z "$STREAM" ]; then
                STREAM=$1
            fi
            ;;
  esac
  shift
done

usage()
{
    basename=`basename "$0"`
    echo "Usage: $basename [-u|--with-url] CATEGORY_NAME STREAM_NAME"
}

if [ -z "$CATEGORY" -o -z "$STREAM" ]; then
    echo "CATEGORY_NAME and STREAM_NAME are required"
    usage
    exit 1
fi

if [ -z "$WITHURL" ]; then
    getinfo='<kb:\(station\|description\)>';
else
    getinfo='<kb:\(station\|description\|url\)>';
fi

CATEGORYID=`curl --silent 'http://pri.kts-af.net/xml/index.xml?sid=09A05772824906D82E3679D21CB1158B&tuning_id=1' | grep -i "$CATEGORY" -A 1 | tail -n 1 | sed 's/<[^>]*>//g'`

curl --silent "http://pri.kts-af.net/xml/index.xml?sid=09A05772824906D82E3679D21CB1158B&tuning_id=$CATEGORYID&show_field%5B%5D=description&show_field%5B%5D=long_description&show_field%5B%5D=num_users&show_field%5B%5D=max_users" | grep -i "$STREAM" -A 5 -B 1 | grep $getinfo | sed "s#<kb:station>#\\`echo -e '\n\r'`#g" | sed 's#<kb:[^>]*>#    #g' | sed 's#</kb:[^>]*>##g' | sed 's/\&amp;/\&/g'

exit 0