Upstart daemon to autogenerate LaTeX documents added to Dropbox

dropbox_tex_worker.py

import os, time, subprocess, sys
from datetime import datetime

my_path = os.path.realpath(__file__)
my_version = os.path.getmtime(my_path)

startdir = '/home/luzifer/Dropbox/tex-convert'
gentex_command = '/home/luzifer/bin/gentex'

def log(string):
  print '[%s] %s' % (datetime.now().strftime('%Y-%m-%d %H:%M:%S'), string)

while True:
  dirpath = os.path.realpath(os.path.expanduser(startdir))
  index = {}
  for dirname, directories, files in os.walk(dirpath):
    for filename in files:
      if filename.find('.tex') == -1:
        continue
      fullpath = os.path.join(dirname, filename)
      index[fullpath] = {
        'mtime': os.path.getmtime(fullpath)
      }
      pdfpath = fullpath.replace('.tex', '.pdf')
      if os.path.exists(pdfpath):
        index[fullpath]['pdfexists'] = True
        index[fullpath]['pdftime'] = os.path.getmtime(pdfpath)
      else:
        index[fullpath]['pdfexists'] = False
      logpath = fullpath.replace('.tex', '.log')
      if os.path.exists(logpath):
      	index[fullpath]['logtime'] = os.path.getmtime(logpath)
      	index[fullpath]['logexists'] = True
      else:
      	index[fullpath]['logexists'] = False
  
  for texfile in index.keys():
    if index[texfile]['pdfexists'] and index[texfile]['pdftime'] > index[texfile]['mtime']:
      continue
    
    if index[texfile]['logexists'] and index[texfile]['logtime'] > index[texfile]['mtime']:
      continue
    
    log('Need rendering of %s' % texfile)
    os.chdir(os.path.dirname(texfile))
    subprocess.check_output('%s "%s"' % (gentex_command, texfile), shell=True)
  
  if my_version < os.path.getmtime(my_path):
    log('Restarting to refresh version.')
    sys.exit(0)
  
  time.sleep(3)

gentex.sh

#!/bin/bash


while [ $# -gt 0 ]; do
  texfile=$1
  name=$(basename $texfile .tex)
  basedir=$(dirname $texfile)
  cd $basedir
  for i in $(seq 1 3); do
    pdflatex -interaction batchmode $texfile
    if ! [ $? -eq 0 ]; then
      echo "Build failed. See $name.log"
      for file in $name.aux $name.toc $name.out; do
        rm -f $basedir/$file
      done
      exit 0
    fi
  done
  for file in $name.aux $name.log $name.toc $name.out; do
    rm -f $basedir/$file
  done
  shift
done

texworker.conf

start on runlevel [2345]
stop on runlevel [016]

respawn

exec su luzifer -c 'python /home/luzifer/Dropbox/tex-convert/worker.py'