HTML5 Manifest Generator and Watcher

manifest_generator.sh

#!/bin/bash

#This script watches your project folder ($DIR) and outputs a HTML5 Manifest to $OUT
#You may need to change the location of your depency scripts
#Dependencies: confess.js and phantomjs
#Author Adrian Maurer (https://github.com/adrianmaurer)
#Based on http://stackoverflow.com/questions/2972765/linux-script-that-monitors-file-changes-within-folders-like-autospec-does

#sh manifest_generator.sh $URL $DIR $OUT

sha=0
previous_sha=0
CMD = "phantomjs/phantomjs confess/confess.js $0 appcache confess/config.json > $2"

update_sha()
{
    sha=`ls -lR $1 | shasum`
}

build () {
    echo "--> running confess.js appcache for $0"
    $CMD
    ## Build/make commands here
    echo
    echo "--> Monitor: Monitoring filesystem..."
}

changed () {
    echo "--> Monitor: Files changed, Building..."
    build
    previous_sha=$sha
}

compare () {
    update_sha
    if [[ $sha != $previous_sha ]] ; then changed; fi
}

run () {
    while true; do

        compare
        sleep 5

    done
}

echo "--> Monitor: Init..."
echo "--> Monitor: Monitoring filesystem..."
run

corrected version https://gist.github.com/4487697