evilclaw

#!/bin/bash
# Author: Donie Leigh <donie.leigh@gmail.com>
#todo: Start downloading in a given directory
#todo: Generate a play list and make it possible to watch videos while downloading.

print_help_msg()
{
    echo "You see, I'm nothing ."
    exit 0
}

check_param()
{
    if [ $# -ne 1 ]; then
        print_help_msg
    fi
}

check_m3u()
{
    if ! [ -a p.m3u ] || [ `wc -l p.m3u|awk '{ print $1 }'` -eq 0 ]; then
        echo '#EXTM3U' > p.m3u
    fi
}

maketmpdir()
{
    local dirname='evilclaw_'`date +%s`
    while [ -e /tmp/${dirname} ]; do
        dirname='evilclaw_'`date +%s`
    done
    mkdir -p /tmp/${dirname}
    echo $dirname
}

export LC_ALL=en_US.UTF-8

#TODO: complete this
while getopts t: opt; do
    case $opt in
        t)
            echo $OPTARG
            shift 2
            ;;
        *)
            echo '*'
            ;;
    esac
done
check_param $*

# Make temporary directory
tmpdir=`maketmpdir`
tmppath="/tmp/${tmpdir}"
curpath=`pwd`
cd $tmppath

# Parse downloading URLs and put them in meta.html
ue=$(php -r "echo urlencode('$1');")
parser="http://www.flvcd.com/parse.php?flag=&format=high&kw=$ue&sbt=%BF%AA%CA%BCGO%21"
if ! wget $parser -U mozilla -O meta.html ; then
    echo "Unable to touch the parser, check network status for the cause ."
    exit 1
fi
if ! enca -L zh_CN -x utf-8 meta.html > /dev/null 2>&1; then
    echo 'Error: Failed encoding meta.html !'
    exit 1
fi

# Extract URLs and titles from meta.html
album=`grep '<R>' meta.html`
album=${album#*>}
grep "<N>" meta.html > title.lst
grep "<U>" meta.html > url.lst
sed -i 's/<N>//g' title.lst
sed -i 's/ //g' title.lst
sed -i 's/<U>//g' url.lst

# Check the extracted materials
l1=`wc -l title.lst|awk '{ print $1 }'`
l2=`wc -l url.lst|awk '{ print $1 }'`
if [ "$l1" != "$l2" ]; then
    echo "Error: Title.lst has $l1 lines, but url.lst got $l2."
    exit 1
fi
if [ $l1 -eq 0 ]; then
    echo "Error: Nothing got from the parser, check meta.html for detail info."
    exit 1
fi

# Make the album directory
if [ -e "${curpath}/${album}" ]; then
    echo "Error: Target directory exists !"
    exit 1
fi
mkdir -p "${curpath}/${album}"
cp -f meta.html title.lst url.lst "${curpath}/${album}"
cd "${curpath}/${album}"
rm -rf $tmppath

arrTitle=(`cat title.lst`)
arrURL=(`cat url.lst`)

check_m3u

# Check p.m3u and descide from which item to start downloading
idx=$((`wc -l p.m3u|awk '{ print $1 }'`-1))
while [ $idx -lt $l1 ]; do
    title=${arrTitle[$idx]}
    url=${arrURL[$idx]}
    idx=$((idx+1))
    if ! wget $url -U mozilla -O "${title}.flv" ; then
        echo "Failed fetching ${title}.flv, maybe its URL has been changed !"
        exit 0
    fi
    cmd="sed -i '\$a\\${title}.flv' p.m3u"
    eval $cmd
done

echo 'done !'
exit 0