generic viewer

#!/bin/sh
#${HOME}/bin/v
#
# Copyright 2012 Hal Canary
#
# Permission is hereby granted, free of charge, to any
# person obtaining a copy of this software and
# associated documentation files (the "Software"), to
# deal in the Software without restriction, including
# without limitation the rights to use, copy, modify,
# merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to
# whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission
# notice shall be included in all copies or
# substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY
# OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
# LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
# COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES
# OR OTHER LIABILITY, WHETHER IN AN ACTION OF
# CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
# IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
#
for arg in "$@"; do
  case "${arg##*.}" in
  png|jpg|jpeg|gif|bmp|tif|tiff|tga|targa)
    { /usr/bin/gthumb "$arg" > /dev/null 2>&1 & } ;;
  pdf|ps|eps)
    { /usr/bin/evince "$arg" > /dev/null 2>&1 & } ;;
  txt|tex|c|cxx|cpp|h|hh|cc|C|py|pl|java|hpp|hxx)
    { /usr/bin/emacs "$arg" \
        --eval '(setq buffer-read-only t)' \
        > /dev/null 2>&1 & } ;;
  htm|html)
    full=`readlink --canonicalize "$arg"`
    { /usr/bin/google-chrome "file://${full}" \
        > /dev/null 2>&1 & } ;;
  doc|docx|rtf|odt|odf|odp|ppt|ods|csv|tsv|xls)
    { /usr/bin/ooffice "$arg" > /dev/null 2>&1 & } ;;
  xcf)
    { /usr/bin/gimp "$arg" > /dev/null 2>&1 & } ;;
  svg)
    { /usr/bin/inkscape "$arg" > /dev/null 2>&1 & } ;;
  *)
    echo "What do I do with \"$arg\"?";;
  esac
done