--- a/pvl/args.py	Fri Sep 20 14:45:27 2013 +0300
+++ b/pvl/args.py	Fri Sep 20 14:45:50 2013 +0300
@@ -2,10 +2,13 @@
     CLI argument handling; common stuff: logging
 """
 
-import optparse
+import codecs
+import grp
 import logging
-
-import pwd, grp, os, sys
+import optparse
+import os
+import pwd
+import sys
 
 import logging; log = logging.getLogger('pvl.args')
 
@@ -91,6 +94,35 @@
             log.error("refusing to run as root, use --uid 0 to override")
             sys.exit(2)
 
+def apply_file (path=None, mode='r', charset='utf-8') :
+    """
+        Open unicode-enabled file from path, with - using stdio.
+    """
+
+    if not path :
+        # use stdin/out based on mode
+        stream, func = {
+            'r':    (sys.stdin, codecs.getreader),
+            'w':    (sys.stdout, codecs.getwriter),
+        }[mode[0]]
+
+        # wrap
+        return func(charset)(stream)
+
+    else :
+        # open
+        return codecs.open(path, mode, charset)
+
+def apply_files (paths, *args, **opts) :
+    """
+        Open one or more files from given paths, defaulting to stdio.
+    """
+
+    if paths :
+        return [apply_file(path, *args, **opts) for path in paths]
+    else:
+        return [apply_file(None, *args, **opts)]
+
 def apply (options, logname=None, rootok=True) :
     """
         Apply the optparse options.
@@ -121,3 +153,9 @@
     for logger in options.debug_module :
         logging.getLogger(logger).setLevel(logging.DEBUG)
     
+def main (main) :
+    """
+        Run given main func.
+    """
+
+    sys.exit(main(sys.argv))