compress some dir's css and js

compress

#!/bin/bash

ai_dir=/opt/www/ai

function scandir() {
    local cur_dir workdir
    workdir=$1
    cd ${workdir}
    if [ ${workdir} = "/" ]
    then
        cur_dir=""
    else
        cur_dir=$(pwd)
    fi
 
    for dirlist in $(ls ${cur_dir})
    do
        if test -d ${dirlist}
        then
            cd ${dirlist}
            scandir ${cur_dir}/${dirlist}
            cd ..
        else
            compress_file ${cur_dir}/${dirlist}
        fi
    done
}

function compress_file(){
    if grep -q \\.js$ <<< $1
    then
        java -jar ${ai_dir}/tools/closure_compiler.jar --js $1 --js_output_file $1.out --warning_level QUIET
        mv -f $1.out $1
    fi
    if grep -q \\.css$ <<< $1
    then
        java -jar ${ai_dir}/tools/yuicompressor.jar --type css $1 -o $1.out
        mv -f $1.out $1
    fi
}

if test -d $1
then
    scandir $1
elif test -f $1
then
    echo $1"is not a directory"
    exit 1
else
    echo $1"does not exist"
    exit 1
fi