jlp

#!/bin/bash

# A POSIX variable
OPTIND=1         # Reset in case getopts has been used previously in the shell.

# Defaults
user="${JOSHUA_USER}"
printer="dcs006a"
host="joshua.dcs.warwick.ac.uk"

function show_help {
    echo -e "\nJoshua Line Printer (TM)\n---------------------------------------\n"
    echo -e "USAGE: jlp [OPTIONS] [FILES]\n"
    echo -e "OPTIONS\n-------"
    echo -e "-h:\t  HELP - Displays this usage message"
    echo -e "-l:\t  LIST - List available printers on remote host"
    echo -e "-u:\t  USER - Username used to connect to remote host (Default \$JOSHUA_USER environment variable)"
    echo -e "-p:\t  PRNT - Name of printer to print to (Default \"dcs006a\")"
    echo -e "-r:\t  HOST - Remote host address (Default \"joshua.dcs.warwick.ac.uk\")"
    echo -e ""
    exit 0
}

function get_printers {
    echo -e $(ssh $user@$host "lpq -a | grep dcs | cut -d\  -f1")
}



while getopts "hlu:p:r:" opt; do
    case "$opt" in
    h)  show_help
        ;;
    l)  list_printers=true
        ;;
    u)  user=$OPTARG
        ;;
    p)  printer=$OPTARG
        ;;
    r)  host=$OPTARG
        ;;
    esac
done

shift $((OPTIND-1))

[ "$1" = "--" ] && shift

# List available printers and exit
if [ $list_printers ]; then
    echo -e "Listing available printers..."
    printers=$(get_printers)
    for p in $printers; do
        echo $p
    done
    exit 0
fi

# If no files then show help and exit
if [ $# -eq 0 ]; then
    show_help
fi

# Upload the files to host and print
for file in "$@"; do
    if [ -f "$file" ]; then
        filename=$(basename "$file")

        if [[ "$(file --brief $file)" != "PDF document"* ]]; then
            echo -e "$file is not a PDF document. Skipping..."
            break
        fi
        echo -e -n "Sending $filename to server...\t"

        pdftops $file - | ssh $user@$host "lp -s -d $printer -t $filename"

        # Check if file was sent
        if [ $? ]; then
            echo -e "SUCCESS"
        else
            echo -e "FAIL\nCould not send file to server. Exiting..."
            exit 2
        fi

    else
        echo -e "Could not find ${file}, ignoring..."
    fi
done

# Show print queue while documents are in it
ssh $user@$host "
while [[ \$(grep 'no entries' <(lpq -P $printer $user)) == '' ]]; do
    lpq -P $printer $user
    echo
    sleep 10
done"

echo -e "Finished printing."