#!/usr/bin/python

from sys import argv
import os
import getopt

options, args = getopt.getopt(argv[1:], 'o:')

if len(args) >= 1:
	outfile = ''
	for option in options:
		if option[0] == '-o':
			outfile = os.path.abspath(option[1])

	texfile = open(os.tempnam(), 'w')
	texfile.write("""\\documentclass{article}
\\usepackage{pdfpages}
\\begin{document}""")
	for infile in args:
	   f = os.path.abspath(infile)
	   texfile.write("\\includepdf[pages=-,fitpaper=true]{%s}" % f)
	texfile.write("\\end{document}")
	texfile.close()

	os.chdir(os.path.dirname(texfile.name))
	os.spawnvp(os.P_WAIT, 'pdflatex', ['pdflatex', texfile.name])
	os.remove(texfile.name)
	os.remove('tmp.log')
	os.remove('tmp.aux')

	os.rename('tmp.pdf', outfile)

else:
	print 'usage: pdfmerge [-o OUTPUT (PDF file)] INPUTs (PDF files)'