#! /usr/bin/env python
# 
# Convert bib file(s) to dvi
#
# TODO
#	handle resolve switch if command line files are given


# Copyright (c) 2007, Peter Corke
#
# All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#     * Redistributions of source code must retain the above copyright
#       notice, this list of conditions and the following disclaimer.
#     * Redistributions in binary form must reproduce the above copyright
#       notice, this list of conditions and the following disclaimer in the
#       documentation and/or other materials provided with the distribution.
#     * The name of the copyright holder may not be used to endorse or 
#	promote products derived from this software without specific prior 
#	written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS AND CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
# THE POSSIBILITY OF SUCH DAMAGE.

import Bibliography;
import BibEntry;
import BibTeX;
import string;
import sys;
import os;
import optparse;

## parse switches
usage = '''usage: %prog [options] [bibfiles]

:: Convert bib file(s) to dvi'''
p = optparse.OptionParser(usage)
p.add_option('--xdvi', dest='xdvi', action='store_true',
             help='launch xdvi when done');
p.add_option('--bibstyle', dest='bibstyle', action='store', type='str',
             help='specify a bibliography style file');
p.set_defaults(xdvi=False, bibstyle='ieeetr', resolve=False);
(opts, args) = p.parse_args()
globals().update(opts.__dict__)

if len(args) == 0 and sys.stdin.isatty():
	p.print_help();
	sys.exit(0);

## read the input files	
bib = BibTeX.BibTeX();
if args:
	for f in args:
		bib.parseFile(f);
else:
	bib.parseFile();
			
if args:
	# a list of files is given, temp file is the same root name as the first argument
	texfile = args[0]
	texfile = texfile[0:string.rindex(texfile, '.bib')];
	bibfiles = ','.join( [os.path.splitext(x)[0] for x in args] );
else:
	# input from stdin, use stdin as the root filename
	texfile = 'stdin';
	fp = open(texfile+'.bib', 'w');
	bib.write(file=fp,resolve=resolve);
	fp.close();
	bibfiles = 'stdin';

print "Saving to", texfile


## create the latex source file
tex = open("%s.tex" % texfile, "w");

tex.write(
r"""\documentclass{article}
\begin{document}
""");

# write the cite keys
for be in bib:
	tex.write("\\nocite{%s}\n" % be.getKey());

# add the bibliog commands
tex.write(
r"""\bibliographystyle{%s}
\bibliography{strings,%s}
\end{document}
""" % (bibstyle, bibfiles) );
tex.close();

os.system("pslatex %s" % texfile);
os.system("bibtex %s" % texfile);
os.system("pslatex %s" % texfile);

if xdvi and os.getenv('DISPLAY'):
	os.system("xdvi %s" % texfile);