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# -*- test-case-name: twisted.web.test.test_html -*-
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""I hold HTML generation helpers.
"""
from html import escape
from io import StringIO
from incremental import Version
from twisted.python import log
from twisted.python.deprecate import deprecated
@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(f'<li> <a href="{hr}">{el}</a></li>\n')
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 BaseException:
log.msg(f"Error calling {func!r}:")
log.err()
return PRE("An error occurred.")