mememaker main script

#!/bin/bash
interactive=0
noupload=0
function imgur {
# imgur script by Bart Nagel <bart@tremby.net>
# version 2
# I release this as public domain. Do with it what you will.

# Required: curl
#
# Instructions:
# Put it somewhere in your path and maybe rename it:
#   mv ~/Downloads/imgur.sh ~/bin/imgur
# Make it executable:
#   chmod +x ~/bin/imgur
# Stick your API key in the top:
#   vim ~/bin/imgur
# Upload an image:
#   imgur images/hilarious/manfallingover.jpg
# The URL will be displayed (and the delete page's URL will be displayed on
# stderr). If you have xsel or xclip the URL will also be put on the X
# selection, which you can usually paste with a middle click.

# API Key provided by Alan@imgur.com
apikey="b3625162d3418ac51a9ee805b1840452"

# function to output usage instructions
function usage {
    echo "Usage: $(basename $0) <filename>
Upload an image to imgur and output its new URL to stdout. Its delete page is
output to stderr.
If xsel or xclip is available, the URL is put on the X selection for easy
pasting." >&2
}

# check API key has been entered
if [ "$apikey" = "Your API key" ]; then
    echo "You first need to edit the script and put your API key in the variable near the top." >&2
    exit 15
fi

# check arguments
if [ "$1" = "-h" -o "$1" = "--help" ]; then
    usage
    exit 0
elif [ $# -ne 1 ]; then
    if [ $# == 0 ]; then
        echo "No file specified" >&2
    else
        echo "Unexpected arguments" >&2
    fi
    usage
    exit 16
elif [ ! -f "$1" ]; then
    echo "File \"$1\" not found" >&2
    exit 1
fi

# check curl is available
which curl >/dev/null 2>/dev/null || {
    echo "Couln't find curl, which is required." >&2
    exit 17
}

# upload the image
response=$(curl -F "key=$apikey" -H "Expect: " -F "image=@$1" \
    http://imgur.com/api/upload.xml 2>/dev/null)
# the "Expect: " header is to get around a problem when using this through the
# Squid proxy. Not sure if it's a Squid bug or what.
if [ $? -ne 0 ]; then
    echo "Upload failed" >&2
    exit 2
elif [ $(echo $response | grep -c "<error_msg>") -gt 0 ]; then
    echo "Error message from imgur:" >&2
    echo $response | sed -r 's/.*<error_msg>(.*)<\/error_msg>.*/\1/' >&2
    exit 3
fi

# parse the response and output our stuff
url=$(echo $response | sed -r 's/.*<original_image>(.*)<\/original_image>.*/\1/')
deleteurl=$(echo $response | sed -r 's/.*<delete_page>(.*)<\/delete_page>.*/\1/')
if [[ "$interactive" == "1" ]]
then
echo
echo Imgur link:
echo $url
echo
echo Delete: $deleteurl
echo All delete urls are saved in ~/deleteurls.txt
else
echo $url
fi
echo "$url $deleteurl" >> ~/deleteurls.txt
}
function creatememe (){
    if [[ "$interactive" == "1" ]]
    then
        echo Press enter to skip a caption.
        if [[ -z $top ]]; then
            echo -n Top caption:
            read top
        fi
        if [[ -z $bottom ]]; then
            echo -n Bottom caption:
            read bottom
        fi
    fi
    width=`identify -format %w meme.jpg`
    convert -background '#0008' -fill white -gravity center -size ${width}x30 \
              caption:"$bottom" \
              meme.jpg +swap -gravity south -composite  out.png
    convert -background '#0008' -fill white -gravity center -size ${width}x30 \
              caption:"$top" \
              out.png +swap -gravity north -composite  out.png
    if [[ "$noupload" == "1" ]]
    then
        cp out.png "$file"
    else
        imgur out.png
    fi
    rm out.png
    rm meme.jpg
}
function checkarg(){
    if [[ "${1:0:1}" == "-" || $1 = "" ]]; then
        cont=0;
    else
        cont=1;
    fi
}
function memeselect {
                if [[ "$meme" == "split" ]]
                then
                echo Please select Top Meme
                echo -n meme1 \#:
                read meme1
                echo
                echo Please select bottomMeme
                echo -n meme2 \#:
                read meme2
                convert -crop 100%x50% ./memes/$meme1.jpg "$meme1"%d.jpg
                convert -crop 100%x50% ./memes/$meme2.jpg "$meme2"%d.jpg
                #montage -mode concatenate +adjoin -tile 1x2 "$meme1"0.jpg "$meme2"1.jpg meme.jpg
                convert -append -adaptive-resize "480x480" "$meme1"0.jpg "$meme2"1.jpg meme.jpg
                rm  "$meme1"0.jpg "$meme2"1.jpg  "$meme1"1.jpg "$meme2"0.jpg
                else
                cp ./memes/$meme.jpg ./meme.jpg
                fi
}
cd `dirname $0`
while :
do
    case $1 in
        -h | --help)
            echo -e "-h --help          display this message"
            echo -e "-s --split #1 #2   create a split meme with #1 on top and #2 on bottom"
            echo -e "-m --meme #1 #2    create a meme with #1 on top and #2 on bottom"
            echo -e "-l --list      list all the avalable memes"
            echo -e "-t --top <text>    top text"
            echo -e "-b --bottom <text> bottom text"
            echo -e "-i --interactive   run in interactive mode"
            echo -e "-f --file <file>   output to <file>, don't upload."
            echo
            echo Examples:
            echo Make a meme with top text and bottom text and upload.
            echo mememaker.sh -m 1 -t \"top text" -b \"bottom text"
            echo
            echo Make a split meme with top text and bottom text and upload.
            echo mememaker.sh -s 1 2 -t \"top text" -b \"bottom text"
            echo
            echo Make a split meme with top text and bottom text and save it as file.png.
            echo mememaker.sh -s 1 2 -t \"top text" -b \"bottom text" -f \"file.png\"
            echo
            echo Make a meme in interactive mode.
            echo mememaker.sh -i
            echo
            echo Mkae a meme in interactive mode and save it as file.png.
            echo mememaker.sh -i -f \"file.png\"
            echo
            echo Tips:
            echo imgur delete links are in ~/deleteurls.txt
            echo You don\'t need to specify both captions, you can skip one.
            exit 0
            ;;
        -l | --list)
            cat ./list.txt
            exit 0;;
        -s | --split)
            if [[ -n $2 ]];then
                convert -crop 100%x50% ./memes/$2.jpg "$2"%d.jpg
                convert -crop 100%x50% ./memes/$3.jpg "$3"%d.jpg
                convert -append -adaptive-resize "480x480" "$2"0.jpg "$3"1.jpg meme.jpg
                rm  "$2"0.jpg "$2"1.jpg  "$3"1.jpg "$3"0.jpg
                shift 3
            else
                echo "Check your arguments. --help for help. -i for interactive." >&2
                exit 0
            fi;;
        -m | --meme)
            if [[ -n $2 ]];then
                cp ./memes/$2.jpg ./meme.jpg
                shift 2
            else
                echo "Check your arguments. --help for help. -i for interactive." >&2
                exit 0
            fi;;
        -t | --top)
            shift
            top=$1
            shift
            checkarg
            while [[ $cont -eq 1 ]]; do
                top="$top $1"
                shift
                checkarg
            done
            cont=1;;
        -b | --bottom)
            shift
            bottom=$1
            shift
            checkarg
            while [[ $cont -eq 1 ]]; do
                bottom="$bottom $1"
                shift
                checkarg
            done
            cont=1;;
        -i | --interactive)
            if [[ -n $2 ]] && [[ "$2" != "-"* ]]
            then
                echo "Check your arguments. --help for help. -i for interactive." >&2
                exit 0
            else
                cat ./list.txt
                echo
                echo split: Create a split meme.
                echo
                echo Please select a meme.
                echo -n meme \#:
                read meme
                echo
                memeselect
                interactive=1
                shift
            fi;;
        -f | --file)
            if [[ -n $2 ]];then
                shift
                noupload=1
                file="$1"
                shift
                checkarg
                while [[ $cont -eq 1 ]]; do
                    file="$file $1"
                    shift
                    checkarg
                done
                if [[ -e "$file" ]]
                then
                    echo "Check your arguments. $file exists." >&2
                    exit 0
                fi
                cont=1
            else
                echo "Check your arguments. --help for help. -i for interactive." >&2
                exit 0
            fi
            ;;
        --)
            shift
            break
            ;;
        -*)
            echo "Check your arguments. $1 is unknown." >&2
            break
            ;;
        *)
            break
            ;;
    esac
done
[[ -f ./meme.jpg ]] && creatememe || echo "Check your arguments. --help for help. -i for interactive."
# vim:set ft=sh: