jpageviewer alias/function that looks for a mets.xml, i.e. in a OCR-D workspace. For use in `~/.zshrc` or similiar.

jpageviewer-profile.sh

_jpageviewer_jar=~/opt/jpageviewer/JPageViewer.jar
if [ -e "$_jpageviewer_jar" ]; then
  jpageviewer() {
    # --resolve-dir defaults to the file's directory
    _jpageviewer_resolve_dir=`dirname "$1"`
    # ... unless a mets.xml file exists one directory down (OCR-D workspace)
    if [ -e "$_jpageviewer_resolve_dir"/../mets.xml ]; then
      _jpageviewer_resolve_dir="$_jpageviewer_resolve_dir"/..
    fi

    java \
      -Dhttp.proxyHost=http-proxy.sbb.spk-berlin.de -Dhttp.proxyPort=3128 \
      -jar $_jpageviewer_jar \
      --resolve-dir "$_jpageviewer_resolve_dir" \
      "$1"

    unset _jpageviewer_resolve_dir
  }
else
  unset _jpageviewer_jar
fi

You have to copy the JPageViewer jar to the right directory. I symlinked ~/opt/jpageviewer to ~/opt/jpageviewer-1.4.01, which contains the files from the official release:

% ls ~/opt/jpageviewer-1.4.01 
'copyright and licenses.txt'   example   help   JPageViewer.jar   lib  'Open example.sh'  'Start Page Viewer.sh'

If you're not at SBB, remove/change the -Dhttp.proxyHost=http-proxy.sbb.spk-berlin.de -Dhttp.proxyPort=3128 \ line.