Beautify program's output.

[snf-image-creator] / image_creator / util.py

diff --git a/image_creator/util.py b/image_creator/util.py
index 63346c8..bb57b5f 100644 (file)
--- a/image_creator/util.py
+++ b/image_creator/util.py
@@ -1,6 +1,39 @@
-#!/usr/bin/env python
+# Copyright 2012 GRNET S.A. All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or
+# without modification, are permitted provided that the following
+# conditions are met:
+#
+#   1. Redistributions of source code must retain the above
+#      copyright notice, this list of conditions and the following
+#      disclaimer.
+#
+#   2. 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.
+#
+# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``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 GRNET S.A OR
+# 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.
+#
+# The views and conclusions contained in the software and
+# documentation are those of the authors and should not be
+# interpreted as representing official policies, either expressed
+# or implied, of GRNET S.A.
 
 import pbs
+from clint.textui import puts, puts_err, colored, progress
+
 
 def get_command(command):
     def find_sbin_command(command, exception):
@@ -14,3 +47,27 @@ def get_command(command):
         return pbs.__getattr__(command)
     except pbs.CommadNotFount as e:
         return find_sbin_command(command, e)
+
+
+def error(msg):
+    puts_err(colored.red("Error: %s\n" % msg))
+
+
+def warn(msg):
+    puts_err(colored.yellow("Warning: %s" % msg))
+
+
+def success(msg):
+    puts(colored.green(msg))
+
+
+def progress_generator(label='', n=100):
+    position = 0
+    for i in progress.bar(range(n), label):
+        if i < position:
+            continue
+        position = yield
+    yield  # suppress the StopIteration exception
+
+
+# vim: set sta sts=4 shiftwidth=4 sw=4 et ai :