aria2 imgur

#!/bin/bash
#Requires aria2

if [ -f .htmltmp ]; then

    #Download progress bar
    currentdown=$(cat .downprogress)
    currentdown=$[ $currentdown +1 ]

    percent=$( echo "($(echo "$currentdown/$totaldown * 100" | bc -l )+0.5)/1" | bc )
    remaining=$(( 100 - $percent ))

    echo -ne "\r["
    printf "%0.s=" `seq $percent`
    echo -n ">"
    [[ $remaining != 0 ]] && printf "%0.s." `seq $remaining`
    echo -n "] $percent% ($currentdown/$totaldown files completed)"

    echo $currentdown > .downprogress
    exit

else

    #Save html source and filename
    curl -s $1 >> .htmltmp
    url=$1

    #Parse html for image links and album title (to create a folder for)
    awk -F\" '/data-src/ {print $10}' .htmltmp | sed '/^$/d' | sed 's/s.jpg/.jpg/g' | sed -e 's/^/http:/' >> .htmltmp1
    fold=$(awk -F\" '/data-title/ {print $6; exit}' .htmltmp | tr -d ' ')

    mkdir $fold 2> /dev/null
    #Account for blank titles, already existing directory or incompatible special characters
    if [ $? = 1 ]; then
        echo "Error creating directory - defaulting to album url"
        fold=$(echo "${url##*/}")
        mkdir $fold
    fi
    echo "Saving files to "$(pwd)/$fold

    #Data for progress bar
    totaldown=$(wc -l .htmltmp1 | awk '{ print $1 }')
    export totaldown
    echo 0 > .downprogress

    #Download generated link file
    echo "Downloading files..."
    echo
    aria2c --dir=$(pwd)/$fold --input-file=$(pwd)/.htmltmp1 -q --on-download-complete ./aria2imgur.sh

    #aria2 error status
    if [ $? = 0 ]; then
        errors="no download errors"
        else
        errors="download errors"
    fi

    #Rename files according to album order - aria2 doesn't support this with its -o flag
    while read line
        do
        file_counter=$[ $file_counter +1 ]
        file_name=$(echo "${line##*/}")
        mv $(pwd)/$fold/$file_name $(pwd)/$fold/"$file_counter - $file_name"
    done < .htmltmp1

    #Remove temporary files
    rm  .htmltmp .htmltmp1 .downprogress

    echo
    echo
    echo "Done with" $errors

fi