Convert .djvu to .pdf with Python, DJVUPS, and PS2PDF.

djvu2pdf.py

#!/bin/python
import os
import sys
import time
import thread

# author: ~/angeloped

stat = []

def convrt(fpath, fname):
	print("converting \"{0}/{1}\"....".format(fpath, fname))
	os.system("djvups \"{0}/{1}\" | ps2pdf - \"{0}/pdfied/{2}\"".format(fpath, fname, fname.replace(".djvu",".pdf")))
	stat.pop()

if __name__ == "__main__":
	if len(sys.argv) == 1:
		fpath = os.getcwd()
	elif len(sys.argv) <= 3:
		buff_limit = int(sys.argv[2]) if len(sys.argv)==3 else 6
		
		if os.path.exists(sys.argv[1]):
			fpath = sys.argv[1]
		else:
			print("target path not found.. setting './' as cwd.")
			fpath = os.getcwd()
	else:
		print("simple usage: python djvu2pdf.py <path/> <buff 'default:6'>")
	
	if not os.path.exists("{0}/pdfied".format(fpath)):
		os.mkdir("{0}/pdfied".format(fpath))
	
	for fname in os.listdir(fpath):
		while len(stat) == buff_limit: # process limiter
			time.sleep(1)
		
		if fname[-5:] == ".djvu":
			thread.start_new_thread(convrt, (fpath, fname,))
			stat.append("")

while bool(stat):
	time.sleep(1)