Makes LaTeX files available to Writer on the iPad

writer.py

#!/usr/bin/env python
# encoding: utf-8
"""
writer.py

Makes LaTeX files available to Writer on the iPad, and retrieves
the changed documents later. Could be modified to work with Elements,
etc. on the iPad. The idea is to copy the latex files to the
~/Dropbox/Writer directory, and retain its project membership
by appending the host directory name to the original file name.

e.g. thesis/abstract.tex is synced to ~/Dropbox/thesis_abstract.txt

To send files to Dropbox, from the project's directory, do
    writer.py -s
And to get the files back from Dropbox, from the projects directory do
    writer.py -g

That is, always run this script from the local host directory of the
project on your Mac (e.g. a git checkout).

Created by Jonathan Sick on 2010-09-22.
Copyright (c) 2010 Jonathan Sick. All rights reserved.
"""

import sys
import getopt
import os
import shutil
import glob

help_message = '''
To send latex in this directory to the Writer directory on DropBox:
    writer.py -s 
    (or) writer.py --send
To get latex from dropbox that belongs to this directory:
    writer.py -g
    (or) writer.py --get
'''


class Usage(Exception):
    def __init__(self, msg):
        self.msg = msg


def main(argv=None):
    if argv is None:
        argv = sys.argv
    try:
        try:
            opts, args = getopt.getopt(argv[1:], "hgs", ["help", "get", "send"])
        except getopt.error, msg:
            raise Usage(msg)
    
        # option processing
        for option, value in opts:
            if option in ("-h", "--help"):
                raise Usage(help_message)
            if option in ("-g", "--get"):
                get()
            elif option in ("-s", "--send"):
                send()
    
    except Usage, err:
        print >> sys.stderr, sys.argv[0].split("/")[-1] + ": " + str(err.msg)
        print >> sys.stderr, "\t for help use --help"
        return 2

def makePathPairs():
    """Make pairs of (latex path, dropbox text path) for all latex files
    in the Current Working Directory.
    """
    pathPairs = []
    cwd = os.getcwd()
    dirname = os.path.basename(cwd)
    latexFilePaths = glob.glob("*.tex")
    for latexFilePath in latexFilePaths:
        basename = os.path.splitext(latexFilePath)[0]
        dbPath = os.path.join(
            os.path.expanduser("~/Dropbox/Writer"), "%s_%s.txt" % (dirname, basename)
        )
        pathPairs.append((latexFilePath, dbPath))
    return pathPairs

def send():
    """Send latex documents in the current working directory to DropBox."""
    for latexFilePath, dbPath in makePathPairs():
        if os.path.exists(dbPath):
            os.remove(dbPath)
        shutil.copy(latexFilePath, dbPath)
        print "Sent %s" % latexFilePath

def get():
    """Get latex documents belonging to this directory from DropBox."""
    for latexFilePath, dbPath in makePathPairs():
        if os.path.exists(dbPath):
            os.remove(latexFilePath)
            shutil.copy(dbPath, latexFilePath)
            print "Got %s" % (latexFilePath)
        else:
            print "Couldn't find %s as %s" (latexFilePath, dbPath)

if __name__ == "__main__":
    sys.exit(main())