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- import pprint
- import sgmllib
- import test_support
- import unittest
-
-
- class EventCollector(sgmllib.SGMLParser):
-
- def __init__(self):
- self.events = []
- self.append = self.events.append
- sgmllib.SGMLParser.__init__(self)
-
- def get_events(self):
- # Normalize the list of events so that buffer artefacts don't
- # separate runs of contiguous characters.
- L = []
- prevtype = None
- for event in self.events:
- type = event[0]
- if type == prevtype == "data":
- L[-1] = ("data", L[-1][1] + event[1])
- else:
- L.append(event)
- prevtype = type
- self.events = L
- return L
-
- # structure markup
-
- def unknown_starttag(self, tag, attrs):
- self.append(("starttag", tag, attrs))
-
- def unknown_endtag(self, tag):
- self.append(("endtag", tag))
-
- # all other markup
-
- def handle_comment(self, data):
- self.append(("comment", data))
-
- def handle_charref(self, data):
- self.append(("charref", data))
-
- def handle_data(self, data):
- self.append(("data", data))
-
- def handle_decl(self, decl):
- self.append(("decl", decl))
-
- def handle_entityref(self, data):
- self.append(("entityref", data))
-
- def handle_pi(self, data):
- self.append(("pi", data))
-
- def unknown_decl(self, decl):
- self.append(("unknown decl", decl))
-
-
- class CDATAEventCollector(EventCollector):
- def start_cdata(self, attrs):
- self.append(("starttag", "cdata", attrs))
- self.setliteral()
-
-
- class SGMLParserTestCase(unittest.TestCase):
-
- collector = EventCollector
-
- def get_events(self, source):
- parser = self.collector()
- try:
- for s in source:
- parser.feed(s)
- parser.close()
- except:
- #self.events = parser.events
- raise
- return parser.get_events()
-
- def check_events(self, source, expected_events):
- try:
- events = self.get_events(source)
- except:
- import sys
- #print >>sys.stderr, pprint.pformat(self.events)
- raise
- if events != expected_events:
- self.fail("received events did not match expected events\n"
- "Expected:\n" + pprint.pformat(expected_events) +
- "\nReceived:\n" + pprint.pformat(events))
-
- def check_parse_error(self, source):
- parser = EventCollector()
- try:
- parser.feed(source)
- parser.close()
- except sgmllib.SGMLParseError:
- pass
- else:
- self.fail("expected SGMLParseError for %r\nReceived:\n%s"
- % (source, pprint.pformat(parser.get_events())))
-
- def test_doctype_decl_internal(self):
- inside = """\
- DOCTYPE html PUBLIC '-//W3C//DTD HTML 4.01//EN'
- SYSTEM 'http://www.w3.org/TR/html401/strict.dtd' [
- <!ELEMENT html - O EMPTY>
- <!ATTLIST html
- version CDATA #IMPLIED
- profile CDATA 'DublinCore'>
- <!NOTATION datatype SYSTEM 'http://xml.python.org/notations/python-module'>
- <!ENTITY myEntity 'internal parsed entity'>
- <!ENTITY anEntity SYSTEM 'http://xml.python.org/entities/something.xml'>
- <!ENTITY % paramEntity 'name|name|name'>
- %paramEntity;
- <!-- comment -->
- ]"""
- self.check_events(["<!%s>" % inside], [
- ("decl", inside),
- ])
-
- def test_doctype_decl_external(self):
- inside = "DOCTYPE html PUBLIC '-//W3C//DTD HTML 4.01//EN'"
- self.check_events("<!%s>" % inside, [
- ("decl", inside),
- ])
-
- def test_underscore_in_attrname(self):
- # SF bug #436621
- """Make sure attribute names with underscores are accepted"""
- self.check_events("<a has_under _under>", [
- ("starttag", "a", [("has_under", "has_under"),
- ("_under", "_under")]),
- ])
-
- def test_underscore_in_tagname(self):
- # SF bug #436621
- """Make sure tag names with underscores are accepted"""
- self.check_events("<has_under></has_under>", [
- ("starttag", "has_under", []),
- ("endtag", "has_under"),
- ])
-
- def test_quotes_in_unquoted_attrs(self):
- # SF bug #436621
- """Be sure quotes in unquoted attributes are made part of the value"""
- self.check_events("<a href=foo'bar\"baz>", [
- ("starttag", "a", [("href", "foo'bar\"baz")]),
- ])
-
- def test_xhtml_empty_tag(self):
- """Handling of XHTML-style empty start tags"""
- self.check_events("<br />text<i></i>", [
- ("starttag", "br", []),
- ("data", "text"),
- ("starttag", "i", []),
- ("endtag", "i"),
- ])
-
- def test_processing_instruction_only(self):
- self.check_events("<?processing instruction>", [
- ("pi", "processing instruction"),
- ])
-
- def test_bad_nesting(self):
- self.check_events("<a><b></a></b>", [
- ("starttag", "a", []),
- ("starttag", "b", []),
- ("endtag", "a"),
- ("endtag", "b"),
- ])
-
- def test_bare_ampersands(self):
- self.check_events("this text & contains & ampersands &", [
- ("data", "this text & contains & ampersands &"),
- ])
-
- def test_bare_pointy_brackets(self):
- self.check_events("this < text > contains < bare>pointy< brackets", [
- ("data", "this < text > contains < bare>pointy< brackets"),
- ])
-
- def test_attr_syntax(self):
- output = [
- ("starttag", "a", [("b", "v"), ("c", "v"), ("d", "v"), ("e", "e")])
- ]
- self.check_events("""<a b='v' c="v" d=v e>""", output)
- self.check_events("""<a b = 'v' c = "v" d = v e>""", output)
- self.check_events("""<a\nb\n=\n'v'\nc\n=\n"v"\nd\n=\nv\ne>""", output)
- self.check_events("""<a\tb\t=\t'v'\tc\t=\t"v"\td\t=\tv\te>""", output)
-
- def test_attr_values(self):
- self.check_events("""<a b='xxx\n\txxx' c="yyy\t\nyyy" d='\txyz\n'>""",
- [("starttag", "a", [("b", "xxx\n\txxx"),
- ("c", "yyy\t\nyyy"),
- ("d", "\txyz\n")])
- ])
- self.check_events("""<a b='' c="">""", [
- ("starttag", "a", [("b", ""), ("c", "")]),
- ])
-
- def test_attr_funky_names(self):
- self.check_events("""<a a.b='v' c:d=v e-f=v>""", [
- ("starttag", "a", [("a.b", "v"), ("c:d", "v"), ("e-f", "v")]),
- ])
-
- def test_illegal_declarations(self):
- s = 'abc<!spacer type="block" height="25">def'
- self.check_events(s, [
- ("data", "abc"),
- ("unknown decl", 'spacer type="block" height="25"'),
- ("data", "def"),
- ])
-
- def test_weird_starttags(self):
- self.check_events("<a<a>", [
- ("starttag", "a", []),
- ("starttag", "a", []),
- ])
- self.check_events("</a<a>", [
- ("endtag", "a"),
- ("starttag", "a", []),
- ])
-
- def test_declaration_junk_chars(self):
- self.check_parse_error("<!DOCTYPE foo $ >")
-
- def test_get_starttag_text(self):
- s = """<foobar \n one="1"\ttwo=2 >"""
- self.check_events(s, [
- ("starttag", "foobar", [("one", "1"), ("two", "2")]),
- ])
-
- def test_cdata_content(self):
- s = ("<cdata> <!-- not a comment --> ¬-an-entity-ref; </cdata>"
- "<notcdata> <!-- comment --> </notcdata>")
- self.collector = CDATAEventCollector
- self.check_events(s, [
- ("starttag", "cdata", []),
- ("data", " <!-- not a comment --> ¬-an-entity-ref; "),
- ("endtag", "cdata"),
- ("starttag", "notcdata", []),
- ("data", " "),
- ("comment", " comment "),
- ("data", " "),
- ("endtag", "notcdata"),
- ])
- s = """<cdata> <not a='start tag'> </cdata>"""
- self.check_events(s, [
- ("starttag", "cdata", []),
- ("data", " <not a='start tag'> "),
- ("endtag", "cdata"),
- ])
-
- def test_illegal_declarations(self):
- s = 'abc<!spacer type="block" height="25">def'
- self.check_events(s, [
- ("data", "abc"),
- ("unknown decl", 'spacer type="block" height="25"'),
- ("data", "def"),
- ])
-
- # XXX These tests have been disabled by prefixing their names with
- # an underscore. The first two exercise outstanding bugs in the
- # sgmllib module, and the third exhibits questionable behavior
- # that needs to be carefully considered before changing it.
-
- def _test_starttag_end_boundary(self):
- self.check_events("""<a b='<'>""", [("starttag", "a", [("b", "<")])])
- self.check_events("""<a b='>'>""", [("starttag", "a", [("b", ">")])])
-
- def _test_buffer_artefacts(self):
- output = [("starttag", "a", [("b", "<")])]
- self.check_events(["<a b='<'>"], output)
- self.check_events(["<a ", "b='<'>"], output)
- self.check_events(["<a b", "='<'>"], output)
- self.check_events(["<a b=", "'<'>"], output)
- self.check_events(["<a b='<", "'>"], output)
- self.check_events(["<a b='<'", ">"], output)
-
- output = [("starttag", "a", [("b", ">")])]
- self.check_events(["<a b='>'>"], output)
- self.check_events(["<a ", "b='>'>"], output)
- self.check_events(["<a b", "='>'>"], output)
- self.check_events(["<a b=", "'>'>"], output)
- self.check_events(["<a b='>", "'>"], output)
- self.check_events(["<a b='>'", ">"], output)
-
- def _test_starttag_junk_chars(self):
- self.check_parse_error("<")
- self.check_parse_error("<>")
- self.check_parse_error("</$>")
- self.check_parse_error("</")
- self.check_parse_error("</a")
- self.check_parse_error("<$")
- self.check_parse_error("<$>")
- self.check_parse_error("<!")
- self.check_parse_error("<a $>")
- self.check_parse_error("<a")
- self.check_parse_error("<a foo='bar'")
- self.check_parse_error("<a foo='bar")
- self.check_parse_error("<a foo='>'")
- self.check_parse_error("<a foo='>")
- self.check_parse_error("<a foo=>")
-
-
- def test_main():
- test_support.run_unittest(SGMLParserTestCase)
-
-
- if __name__ == "__main__":
- test_main()
-