get-bing-wallpaper

#!/bin/bash

# export {http,https,ftp}_proxy=http://127.0.0.1:7777

# The market, can be "en-US" "zh-CN" "ja-JP" "en-AU" "en-UK" "de-DE" "en-NZ" "en-CA"
mkt="en-US"

bing="www.bing.com"

# The idx parameter determines where to start from. 0 is the current day,
# 1 the previous day, etc.
idx="0"

# $xmlURL is needed to get the xml data
xmlURL="http://www.bing.com/HPImageArchive.aspx?format=xml&idx=$idx&n=1&mkt=$mkt"

# $saveDir is used to set the location where Bing pics of the day are stored.
saveDir=$HOME'/Pictures/Bing/'

# Create saveDir if it does not already exist
mkdir -p $saveDir

# Extract the relative URL of the Bing pic of the day
xml=$(curl "$bing/HPImageArchive.aspx?format=rss&idx=$idx&n=1&mkt=$mkt")

picUrl=$bing$( \
    echo $xml\
        | xmllint --xpath "/rss/channel/item/link/text()" - \
        | sed 's/1366x768/1920x1080/g' \
      )

# Get title, remove copyright notice and html entities
picTitle=$( \
    echo $xml\
        | xmllint --xpath "/rss/channel/item/title/text()" - \
        | sed s/'([^)]*)'/''/g \
        | perl -MHTML::Entities -e 'while(<>) {print decode_entities($_);}'\
      )

picName="${picUrl##*/}"

# Download the Bing pic of the day
cd $saveDir && curl -O $picUrl

# Test if download was successful.
downloadResult=$?
if [[ $downloadResult -ge 1 ]]; then
    rm -rf $saveDir$picName
    echo "Couldn't download any picture."
    exit 1;
fi

# Test if it's a pic
file --mime-type -b $saveDir$picName | grep "^image/" > /dev/null
downloadResult=$?
if [[ $downloadResult -ge 1 ]]; then
    rm -rf $saveDir$picName
    echo "Downloaded file is not an image."
    exit 1;
fi

# Add title to image
width=$(identify -format %w $saveDir$picName)
height=$(identify -format %h $saveDir$picName)
convert -background '#0008' -fill white -gravity center -size $(($width/4))x$(($height/6)) -font Ubuntu \
        caption:"$picTitle" \
        $saveDir$picName +swap -gravity east -composite $saveDir$picName