#!/usr/bin/python

# где лежат файлы ppm (каталог оригинала)
originaldir = "./"

# где создавать временные .djvu
djdir = "./DJ/"
# ----------------------------------------------------------------------------------------------------------------
assemblelist = []
# ----------------------------------------------------------------------------------------------------------------
import os, os.path

def GetList(fromwhere):
	list =  os.listdir(fromwhere)
	result = []
	for item in list:
		if os.access(item, os.R_OK) and not os.path.isdir(item):
			if item.find(".pnm") > -1:
				result.append(item)
	return result

# ----------------------------------------------------------------------------------------------------------------
def CompressIt(fileslist):
	global djdir
	global assemblelist
	for file in fileslist:
		outname = file.replace(".pnm", ".djvu")
		if file.find("C")>-1:
			# outname = outname.replace("C", "")
			cmd = "c44  "
			# используем цветной кодировщик
			pass
		else:
			# иначе битональный кодировщик
			cmd = "cjb2  -clean -loose  "
			pass
		cmd = cmd + file + "  " + djdir+outname
		assemblelist.append(djdir+outname)
		if os.access(djdir+outname, os.R_OK):
			pass
		else:
			print cmd
			os.system(cmd)
# ----------------------------------------------------------------------------------------------------------------
# собираем воедино
def Assemble(files):
	cmd = "djvm -c outfile.djvu "
	files.sort()
	for item in files:
		cmd = cmd + item + " "
	print  cmd
	os.system(cmd)
# ----------------------------------------------------------------------------------------------------------------
def main():
	filesto =GetList(originaldir)
	CompressIt(filesto)
	global assemblelist
	Assemble(assemblelist)
# ----------------------------------------------------------------------------------------------------------------

if __name__ == "__main__":
	main()