brother printer driver downloader

get-brother-drivers.sh

#!/bin/bash
#
# This scraps the $URL below
# and downloads all the .deb (and .ppd) files
#
# originally plan was to somehow integrate it with brother-cups-wraper-extra
# for now, it downloads ~ 230M of data.

URL="http://welcome.solutions.brother.com/bsc/public_s/id/linux/en/download_prn.html"
TEMP_D=$(mktemp -d "${TMPDIR:-/tmp}/${0##*/}.XXXXXX")

declare -A alt_mod2drv
declare -A alt_drv2mod

dfile="$TEMP_D/data"
altdata="$TEMP_D/short"
modeldata="$TEMP_D/models"
altdir="$TEMP_D/altdata"
wget -q "$URL" -O "$dfile"

set -f
egrep "(AltDriver|Please use)" "$dfile" > "$altdata"
while read line; do
   case "$line" in
      *AltDriver*)
         model="${line#*name=\"}"
         model=${model%%\"*}
         ;;
      *Please\ use*)
         driver=${line#*href=\"#}
         driver=${driver%%\"*}
         alt_mod2drv[$model]="$driver"
         calt="${alt_drv2mod[$driver]}"
         alt_drv2mod[$driver]="${calt:+${calt},}${model}"
         echo "driver: $driver model=$model"
         ;;
   esac
done < "$altdata"

sed 's,^\(<tr>\)\(<td><a href="#\),\1\n\2,' "$dfile" |
   sed -n 's,^<td><a href="#\([^"]*\).*,\1,p' > "$modeldata"

while read model; do
   if [ -n "${alt_mod2drv[$model]}" ]; then
      continue
   fi
   drivers[${#drivers[@]}]="$model"
done < "$modeldata"

out_d="output"
for driver in "${drivers[@]}"; do
   xdriver="${driver//\//_}"
   xdriver="${xdriver// /}"
   models=${alt_drv2mod[$driver]}
   [ -n "$models" ] && models="$driver,${models}" || models="$driver"
   echo "== $driver [$models] =="
   coutd="${out_d}/$xdriver"
   mkdir -p "$coutd"
   sed -n "/<p><a name=\"$xdriver\">/,/<\/table>/ p" "$dfile" |
      sed -n 's,.*href=".*dlfile=\([^&]*\)&.*,\1,p' |
      grep -v ".rpm" > "$coutd/downloads"
   oifs="$IFS"; IFS=","; for x in $models; do echo $x; done > "$coutd/models"; 
   IFS="$oifs"
   echo "$driver" > "$coutd/driver"
   while read url; do
      out="${coutd}/${url##*/}"
      [ -f "$out" ] && { echo "#had $url" 1>&2; continue; }
      echo "#download $url" 1>&2
      wget -q "$url" -O "$out.tmp" && mv "$out.tmp" "$out" || exit
   done < "$coutd/downloads"
done