From: Brian Dolbec <dolsen@gentoo.org>
Date: Mon, 3 Dec 2012 07:23:18 +0000 (-0800)
Subject: Add a copy of layman's utils.py minus some layman specific functions.
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=f06d8d53d5eb2d07152ddb6d6fdf0d73bf3a1580;p=gentoo-keys.git

Add a copy of layman's utils.py minus some layman specific functions.
---

diff --git a/gkeys/utils.py b/gkeys/utils.py
new file mode 100644
index 0000000..bfbed83
--- /dev/null
+++ b/gkeys/utils.py
@@ -0,0 +1,154 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+'''# File:       xml.py
+
+             Utilities to deal with things...
+             copied/edited from app-portage/layman
+
+
+ Copyright:
+             (c) 2005 - 2008 Gunnar Wrobel
+             (c) 2009        Sebastian Pipping
+             (c) 2009        Christian Groschupp
+             Distributed under the terms of the GNU General Public License v2
+
+ Author(s):
+             Gunnar Wrobel <wrobel@gentoo.org>
+             Sebastian Pipping <sebastian@pipping.org>
+             Christian Groschupp <christian@groschupp.org>
+
+Utility functions'''
+
+
+
+import types, re, os
+import sys
+import locale
+import codecs
+
+
+def encoder(text, _encoding_):
+    return codecs.encode(text, _encoding_, 'replace')
+
+
+def decode_selection(selection):
+    '''utility function to decode a list of strings
+    accoring to the filesystem encoding
+    '''
+    # fix None passed in, return an empty list
+    selection = selection or []
+    enc = sys.getfilesystemencoding()
+    if enc is not None:
+        return [encoder(i, enc) for i in selection]
+    return selection
+
+
+def get_encoding(output):
+    if hasattr(output, 'encoding') \
+            and output.encoding != None:
+        return output.encoding
+    else:
+        encoding = locale.getpreferredencoding()
+        # Make sure that python knows the encoding. Bug 350156
+        try:
+            # We don't care about what is returned, we just want to
+            # verify that we can find a codec.
+            codecs.lookup(encoding)
+        except LookupError:
+            # Python does not know the encoding, so use utf-8.
+            encoding = 'utf_8'
+        return encoding
+
+
+def pad(string, length):
+    '''Pad a string with spaces.'''
+    if len(string) <= length:
+        return string + ' ' * (length - len(string))
+    else:
+        return string[:length - 3] + '...'
+
+
+def terminal_width():
+    '''Determine width of terminal window.'''
+    try:
+        width = int(os.environ['COLUMNS'])
+        if width > 0:
+            return width
+    except:
+        pass
+    try:
+        import struct, fcntl, termios
+        query = struct.pack('HHHH', 0, 0, 0, 0)
+        response = fcntl.ioctl(1, termios.TIOCGWINSZ, query)
+        width = struct.unpack('HHHH', response)[1]
+        if width > 0:
+            return width
+    except:
+        pass
+    return 80
+
+
+# From <http://effbot.org/zone/element-lib.htm>
+# BEGIN
+def indent(elem, level=0):
+    i = "\n" + level*"  "
+    if len(elem):
+        if not elem.text or not elem.text.strip():
+            elem.text = i + "  "
+        if not elem.tail or not elem.tail.strip():
+            elem.tail = i
+        for elem in elem:
+            indent(elem, level+1)
+        if not elem.tail or not elem.tail.strip():
+            elem.tail = i
+    else:
+        if level and (not elem.tail or not elem.tail.strip()):
+            elem.tail = i
+# END
+
+def path(path_elements):
+    '''
+    Concatenate a path from several elements.
+
+    >>> path([])
+    ''
+    >>> path(['a'])
+    'a'
+    >>> path(['a','b'])
+    'a/b'
+    >>> path(['a/','b'])
+    'a/b'
+    >>> path(['/a/','b'])
+    '/a/b'
+    >>> path(['/a/','b/'])
+    '/a/b'
+    >>> path(['/a/','b/'])
+    '/a/b'
+    >>> path(['/a/','/b/'])
+    '/a/b'
+    >>> path(['/a/','/b','c/'])
+    '/a/b/c'
+    '''
+    pathname = ''
+
+    if type(path_elements) in types.StringTypes:
+        path_elements = [path_elements]
+
+    # Concatenate elements and seperate with /
+    for i in path_elements:
+        pathname += i + '/'
+
+    # Replace multiple consecutive slashes
+    pathname = re.compile('/+').sub('/', pathname)
+
+    # Remove the final / if there is one
+    if pathname and pathname[-1] == '/':
+        pathname = pathname[:-1]
+
+    return pathname
+
+
+if __name__ == '__main__':
+    import doctest
+    doctest.testmod(sys.modules[__name__])