CLI twitpic

#!/bin/bash
#==================================================================
#          FILE:  cli-twitpic.bash
#         USAGE:  ./cli-twitpic.bash
#   DESCRIPTION:  Allows you to upload pic from cli to twitpic and
#                 also update the same as your status in twitter
#        AUTHOR:  Hemanth H.M, hemanth.hm@gmail.com
#       VERSION:  1.0
#       CREATED:  03/06/2010 01:45:02 AM IST
#==================================================================

URL=http://twitpic.com/api/uploadAndPost

# Fields to post in (post data should be formatted as multipart/form-data):
# - media (required) - Binary image data
# - username (required) - Twitter username
# - password (required) - Twitter password
# - message (optional) - Message to post to twitter.

# Declares an associative array called data (Bash v4+)
declare -A data

data[USER]=$1
data[PASS]=$2
data[PIC]="$3"
data[TWIT]=$4

# Validate inputs
for key in USER PASS PIC TWIT; do
  [[ data[$key]="" ]] && echo "Enter $key:" && read data[$key]
done

# Check if the pic file exists
[[ -f ${data[PIC]} ]] || echo Error: FileNotFound ${data[PIC]} && exit 1

echo Uploading...
$CURL \
  --form username=$TWITTER_USER \
  --form password=$TWITTER_PW \
  --form media=@"$PHOTO" \
  --form message="$TWEET_MSG" $UPLOAD_URL

# Check if all went fine
[[ $? = 6 ]] && echo "Error while uploading! Check credentials" && exit 1
echo "Pic uploaded!"