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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.")