--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ztfy/utils/text.py	Wed Jun 20 16:29:53 2012 +0200
@@ -0,0 +1,68 @@
+### -*- coding: utf-8 -*- ####################################################
+##############################################################################
+#
+# Copyright (c) 2008-2010 Thierry Florac <tflorac AT ulthar.net>
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+
+__docformat__ = "restructuredtext"
+
+# import standard packages
+
+# import Zope3 interfaces
+
+# import local interfaces
+
+# import Zope3 packages
+from zope.component import createObject, queryMultiAdapter
+
+# import local packages
+from ztfy.utils.request import getRequest
+
+
+def textStart(text, length, max=0):
+    """Get first words of given text with maximum given length
+    
+    If @max is specified, text is shortened only if remaining text is longer than @max
+    
+    @param text: initial text
+    @param length: maximum length of resulting text
+    @param max: if > 0, @text is shortened only if remaining text is longer than max
+    """
+    result = text or ''
+    if length > len(result):
+        return result
+    index = length - 1
+    text_length = len(result)
+    while (index > 0) and (result[index] != ' '):
+        index -= 1
+    if (index > 0) and (text_length > index + max):
+        return result[:index] + '&#133;'
+    return text
+
+
+def textToHTML(text, renderer='zope.source.plaintext', request=None):
+    if request is None:
+        request = getRequest()
+    formatter = createObject(renderer, text)
+    renderer = queryMultiAdapter((formatter, request), name=u'')
+    return renderer.render()
+
+
+class Renderer(object):
+
+    def __init__(self, context):
+        self.context = context
+
+    def render(self, renderer, request=None):
+        if not self.context:
+            return u''
+        return textToHTML(self.context, renderer, request)