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Current Path : /usr/lib/python2.7/dist-packages/twisted/web/
Current File : //usr/lib/python2.7/dist-packages/twisted/web/html.py
# -*- test-case-name: twisted.web.test.test_html -*-
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.


"""I hold HTML generation helpers.
"""

from cgi import escape

from twisted.python import log
from twisted.python.compat import NativeStringIO as StringIO
from twisted.python.deprecate import deprecated
from twisted.python.versions import Version



@deprecated(Version('Twisted', 15, 3, 0), replacement='twisted.web.template')
def PRE(text):
    "Wrap <pre> tags around some text and HTML-escape it."
    return "<pre>"+escape(text)+"</pre>"



@deprecated(Version('Twisted', 15, 3, 0), replacement='twisted.web.template')
def UL(lst):
    io = StringIO()
    io.write("<ul>\n")
    for el in lst:
        io.write("<li> %s</li>\n" % el)
    io.write("</ul>")
    return io.getvalue()



@deprecated(Version('Twisted', 15, 3, 0), replacement='twisted.web.template')
def linkList(lst):
    io = StringIO()
    io.write("<ul>\n")
    for hr, el in lst:
        io.write('<li> <a href="%s">%s</a></li>\n' % (hr, el))
    io.write("</ul>")
    return io.getvalue()



@deprecated(Version('Twisted', 15, 3, 0), replacement='twisted.web.template')
def output(func, *args, **kw):
    """output(func, *args, **kw) -> html string
    Either return the result of a function (which presumably returns an
    HTML-legal string) or a sparse HTMLized error message and a message
    in the server log.
    """
    try:
        return func(*args, **kw)
    except:
        log.msg("Error calling %r:" % (func,))
        log.err()
        return PRE("An error occurred.")
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