flickr-get

#!/bin/sh
# flickr-get, version 0.5.
#
# Downloads entire flickr photostreams with the help of wget.
# This is somewhat hacky, and will probably break when flickr
# changes its website layout.
#
# Licenced under the Public Domain or whatever.

# Temporary directory location.
tempdir=".flickr-get.$$"

# Check for command-line arguments.
if [ -z "$1" ]
then
    echo "Usage: $0 [flickr-url] [cookies-file]"
    exit 1
fi

# Check if [cookies-file] was specified. If it was, set $cookies to the
# absolute path of the cookies file.
if [ -n "$2" ]
then
    cd "`dirname "$2"`"
    cookies="`pwd`/`basename "$2"`"
    cd "$OLDPWD"
fi

mkdir $tempdir
cd $tempdir

# Download first page, check if it returns a photo-gallery. If not, retry
# with the use of a cookies file (if specified).
wget -q -E "$1/page1"
grep photo_container page1.html &>/dev/null
if [ $? -eq 1 ]
then
    if [ -e "$cookies" ]
    then
        wget_cookies="--load-cookies "$cookies""
        rm page1.html
        wget -q -E $wget_cookies "$1/page1"
    else
        echo -e "\033[1mDownloading this photostream requires a valid cookies.txt file.\033[0m"
        rm -Rf $tempdir
        exit 1
    fi
fi

# Find the last page in a photostream.
lastpage=`grep -A 2 '<span class="break">...</span>' page1.html | tail -1 | cut -d">" -f2 | cut -d"<" -f1`

# Start downloading all pages up to the last one. Cookies will be used
# if they were needed for the first page.
echo -e "\033[1mDownloading temporary files...\033[0m"
for i in `seq 2 $lastpage`
do
    wget -q -E $wget_cookies "$1/page$i"
done

# Extract a list of photo URLs, removing the size specification (along
# with the extension) and dumping the resulting list in 'flickr-photos'.
grep -h photo_container *.html | cut -d'"' -f8 | sed 's/_m.jpg//' > flickr-photos

cd "$OLDPWD"

# Start downloading photos, first trying for original (or large) size
# images and moving to medium size images if the originals are unavailable.
echo -e "\033[1mDownloading photos...\033[0m"
for i in `cat $tempdir/flickr-photos`
do
    wget -q -nc "${i}_b.jpg"
    if [ -f "photo_unavailable.gif" ]
    then
        rm "photo_unavailable.gif"
        wget -q -nc "${i}_z.jpg"
    fi
done

# Clean up and exit.
rm -Rf $tempdir
echo -e "\033[1mDone!\033[0m"

exit 0