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388 lines
12 KiB
Python
388 lines
12 KiB
Python
# Very simple test - Parse a file and print what happens
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# XXX TypeErrors on calling handlers, or on bad return values from a
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# handler, are obscure and unhelpful.
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import pyexpat
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from xml.parsers import expat
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from test.test_support import sortdict, TestFailed
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class Outputter:
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def StartElementHandler(self, name, attrs):
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print('Start element:\n\t' + repr(name), sortdict(attrs))
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def EndElementHandler(self, name):
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print('End element:\n\t' + repr(name))
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def CharacterDataHandler(self, data):
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data = data.strip()
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if data:
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print('Character data:')
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print('\t' + repr(data))
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def ProcessingInstructionHandler(self, target, data):
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print('PI:\n\t' + repr(target), repr(data))
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def StartNamespaceDeclHandler(self, prefix, uri):
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print('NS decl:\n\t' + repr(prefix), repr(uri))
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def EndNamespaceDeclHandler(self, prefix):
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print('End of NS decl:\n\t' + repr(prefix))
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def StartCdataSectionHandler(self):
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print('Start of CDATA section')
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def EndCdataSectionHandler(self):
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print('End of CDATA section')
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def CommentHandler(self, text):
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print('Comment:\n\t' + repr(text))
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def NotationDeclHandler(self, *args):
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name, base, sysid, pubid = args
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print('Notation declared:', args)
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def UnparsedEntityDeclHandler(self, *args):
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entityName, base, systemId, publicId, notationName = args
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print('Unparsed entity decl:\n\t' + str(args))
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def NotStandaloneHandler(self, userData):
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print('Not standalone')
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return 1
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def ExternalEntityRefHandler(self, *args):
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context, base, sysId, pubId = args
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print('External entity ref:', args[1:])
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return 1
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def DefaultHandler(self, userData):
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pass
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def DefaultHandlerExpand(self, userData):
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pass
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def confirm(ok):
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if ok:
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print("OK.")
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else:
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print("Not OK.")
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out = Outputter()
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parser = expat.ParserCreate(namespace_separator='!')
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# Test getting/setting returns_unicode
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parser.returns_unicode = 0; confirm(parser.returns_unicode == 0)
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parser.returns_unicode = 1; confirm(parser.returns_unicode == 1)
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parser.returns_unicode = 2; confirm(parser.returns_unicode == 1)
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parser.returns_unicode = 0; confirm(parser.returns_unicode == 0)
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# Test getting/setting ordered_attributes
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parser.ordered_attributes = 0; confirm(parser.ordered_attributes == 0)
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parser.ordered_attributes = 1; confirm(parser.ordered_attributes == 1)
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parser.ordered_attributes = 2; confirm(parser.ordered_attributes == 1)
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parser.ordered_attributes = 0; confirm(parser.ordered_attributes == 0)
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# Test getting/setting specified_attributes
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parser.specified_attributes = 0; confirm(parser.specified_attributes == 0)
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parser.specified_attributes = 1; confirm(parser.specified_attributes == 1)
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parser.specified_attributes = 2; confirm(parser.specified_attributes == 1)
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parser.specified_attributes = 0; confirm(parser.specified_attributes == 0)
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HANDLER_NAMES = [
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'StartElementHandler', 'EndElementHandler',
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'CharacterDataHandler', 'ProcessingInstructionHandler',
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'UnparsedEntityDeclHandler', 'NotationDeclHandler',
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'StartNamespaceDeclHandler', 'EndNamespaceDeclHandler',
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'CommentHandler', 'StartCdataSectionHandler',
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'EndCdataSectionHandler',
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'DefaultHandler', 'DefaultHandlerExpand',
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#'NotStandaloneHandler',
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'ExternalEntityRefHandler'
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]
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for name in HANDLER_NAMES:
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setattr(parser, name, getattr(out, name))
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data = '''\
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<?xml version="1.0" encoding="iso-8859-1" standalone="no"?>
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<?xml-stylesheet href="stylesheet.css"?>
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<!-- comment data -->
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<!DOCTYPE quotations SYSTEM "quotations.dtd" [
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<!ELEMENT root ANY>
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<!NOTATION notation SYSTEM "notation.jpeg">
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<!ENTITY acirc "â">
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<!ENTITY external_entity SYSTEM "entity.file">
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<!ENTITY unparsed_entity SYSTEM "entity.file" NDATA notation>
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%unparsed_entity;
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]>
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<root attr1="value1" attr2="value2ὀ">
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<myns:subelement xmlns:myns="http://www.python.org/namespace">
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Contents of subelements
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</myns:subelement>
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<sub2><![CDATA[contents of CDATA section]]></sub2>
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&external_entity;
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</root>
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'''
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# Produce UTF-8 output
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parser.returns_unicode = 0
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try:
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parser.Parse(data, 1)
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except expat.error:
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print('** Error', parser.ErrorCode, expat.ErrorString(parser.ErrorCode))
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print('** Line', parser.ErrorLineNumber)
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print('** Column', parser.ErrorColumnNumber)
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print('** Byte', parser.ErrorByteIndex)
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# Try the parse again, this time producing Unicode output
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parser = expat.ParserCreate(namespace_separator='!')
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parser.returns_unicode = 1
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for name in HANDLER_NAMES:
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setattr(parser, name, getattr(out, name))
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try:
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parser.Parse(data, 1)
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except expat.error:
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print('** Error', parser.ErrorCode, expat.ErrorString(parser.ErrorCode))
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print('** Line', parser.ErrorLineNumber)
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print('** Column', parser.ErrorColumnNumber)
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print('** Byte', parser.ErrorByteIndex)
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# Try parsing a file
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parser = expat.ParserCreate(namespace_separator='!')
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parser.returns_unicode = 1
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for name in HANDLER_NAMES:
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setattr(parser, name, getattr(out, name))
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import StringIO
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file = StringIO.StringIO(data)
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try:
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parser.ParseFile(file)
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except expat.error:
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print('** Error', parser.ErrorCode, expat.ErrorString(parser.ErrorCode))
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print('** Line', parser.ErrorLineNumber)
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print('** Column', parser.ErrorColumnNumber)
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print('** Byte', parser.ErrorByteIndex)
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# Tests that make sure we get errors when the namespace_separator value
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# is illegal, and that we don't for good values:
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print()
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print("Testing constructor for proper handling of namespace_separator values:")
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expat.ParserCreate()
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expat.ParserCreate(namespace_separator=None)
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expat.ParserCreate(namespace_separator=' ')
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print("Legal values tested o.k.")
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try:
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expat.ParserCreate(namespace_separator=42)
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except TypeError as e:
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print("Caught expected TypeError:")
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print(e)
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else:
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print("Failed to catch expected TypeError.")
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try:
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expat.ParserCreate(namespace_separator='too long')
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except ValueError as e:
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print("Caught expected ValueError:")
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print(e)
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else:
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print("Failed to catch expected ValueError.")
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# ParserCreate() needs to accept a namespace_separator of zero length
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# to satisfy the requirements of RDF applications that are required
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# to simply glue together the namespace URI and the localname. Though
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# considered a wart of the RDF specifications, it needs to be supported.
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#
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# See XML-SIG mailing list thread starting with
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# http://mail.python.org/pipermail/xml-sig/2001-April/005202.html
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#
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expat.ParserCreate(namespace_separator='') # too short
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# Test the interning machinery.
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p = expat.ParserCreate()
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L = []
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def collector(name, *args):
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L.append(name)
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p.StartElementHandler = collector
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p.EndElementHandler = collector
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p.Parse("<e> <e/> <e></e> </e>", 1)
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tag = L[0]
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if len(L) != 6:
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print("L should only contain 6 entries; found", len(L))
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for entry in L:
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if tag is not entry:
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print("expected L to contain many references to the same string", end=' ')
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print("(it didn't)")
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print("L =", repr(L))
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break
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# Tests of the buffer_text attribute.
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import sys
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class TextCollector:
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def __init__(self, parser):
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self.stuff = []
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def check(self, expected, label):
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require(self.stuff == expected,
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"%s\nstuff = %r\nexpected = %r"
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% (label, self.stuff, map(unicode, expected)))
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def CharacterDataHandler(self, text):
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self.stuff.append(text)
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def StartElementHandler(self, name, attrs):
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self.stuff.append("<%s>" % name)
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bt = attrs.get("buffer-text")
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if bt == "yes":
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parser.buffer_text = 1
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elif bt == "no":
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parser.buffer_text = 0
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def EndElementHandler(self, name):
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self.stuff.append("</%s>" % name)
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def CommentHandler(self, data):
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self.stuff.append("<!--%s-->" % data)
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def require(cond, label):
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# similar to confirm(), but no extraneous output
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if not cond:
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raise TestFailed(label)
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def setup(handlers=[]):
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parser = expat.ParserCreate()
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require(not parser.buffer_text,
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"buffer_text not disabled by default")
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parser.buffer_text = 1
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handler = TextCollector(parser)
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parser.CharacterDataHandler = handler.CharacterDataHandler
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for name in handlers:
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setattr(parser, name, getattr(handler, name))
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return parser, handler
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parser, handler = setup()
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require(parser.buffer_text,
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"text buffering either not acknowledged or not enabled")
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parser.Parse("<a>1<b/>2<c/>3</a>", 1)
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handler.check(["123"],
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"buffered text not properly collapsed")
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# XXX This test exposes more detail of Expat's text chunking than we
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# XXX like, but it tests what we need to concisely.
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parser, handler = setup(["StartElementHandler"])
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parser.Parse("<a>1<b buffer-text='no'/>2\n3<c buffer-text='yes'/>4\n5</a>", 1)
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handler.check(["<a>", "1", "<b>", "2", "\n", "3", "<c>", "4\n5"],
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"buffering control not reacting as expected")
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parser, handler = setup()
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parser.Parse("<a>1<b/><2><c/> \n 3</a>", 1)
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handler.check(["1<2> \n 3"],
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"buffered text not properly collapsed")
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parser, handler = setup(["StartElementHandler"])
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parser.Parse("<a>1<b/>2<c/>3</a>", 1)
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handler.check(["<a>", "1", "<b>", "2", "<c>", "3"],
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"buffered text not properly split")
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parser, handler = setup(["StartElementHandler", "EndElementHandler"])
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parser.CharacterDataHandler = None
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parser.Parse("<a>1<b/>2<c/>3</a>", 1)
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handler.check(["<a>", "<b>", "</b>", "<c>", "</c>", "</a>"],
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"huh?")
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parser, handler = setup(["StartElementHandler", "EndElementHandler"])
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parser.Parse("<a>1<b></b>2<c/>3</a>", 1)
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handler.check(["<a>", "1", "<b>", "</b>", "2", "<c>", "</c>", "3", "</a>"],
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"huh?")
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parser, handler = setup(["CommentHandler", "EndElementHandler",
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"StartElementHandler"])
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parser.Parse("<a>1<b/>2<c></c>345</a> ", 1)
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handler.check(["<a>", "1", "<b>", "</b>", "2", "<c>", "</c>", "345", "</a>"],
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"buffered text not properly split")
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parser, handler = setup(["CommentHandler", "EndElementHandler",
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"StartElementHandler"])
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parser.Parse("<a>1<b/>2<c></c>3<!--abc-->4<!--def-->5</a> ", 1)
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handler.check(["<a>", "1", "<b>", "</b>", "2", "<c>", "</c>", "3",
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"<!--abc-->", "4", "<!--def-->", "5", "</a>"],
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"buffered text not properly split")
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# Test handling of exception from callback:
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def StartElementHandler(name, attrs):
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raise RuntimeError(name)
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parser = expat.ParserCreate()
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parser.StartElementHandler = StartElementHandler
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try:
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parser.Parse("<a><b><c/></b></a>", 1)
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except RuntimeError as e:
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if e.args[0] != "a":
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print("Expected RuntimeError for element 'a'; found %r" % e.args[0])
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else:
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print("Expected RuntimeError for 'a'")
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# Test Current* members:
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class PositionTest:
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def __init__(self, expected_list, parser):
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self.parser = parser
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self.parser.StartElementHandler = self.StartElementHandler
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self.parser.EndElementHandler = self.EndElementHandler
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self.expected_list = expected_list
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self.upto = 0
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def StartElementHandler(self, name, attrs):
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self.check_pos('s')
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def EndElementHandler(self, name):
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self.check_pos('e')
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def check_pos(self, event):
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pos = (event,
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self.parser.CurrentByteIndex,
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self.parser.CurrentLineNumber,
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self.parser.CurrentColumnNumber)
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require(self.upto < len(self.expected_list),
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'too many parser events')
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expected = self.expected_list[self.upto]
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require(pos == expected,
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'expected position %s, got %s' % (expected, pos))
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self.upto += 1
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parser = expat.ParserCreate()
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handler = PositionTest([('s', 0, 1, 0), ('s', 5, 2, 1), ('s', 11, 3, 2),
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('e', 15, 3, 6), ('e', 17, 4, 1), ('e', 22, 5, 0)],
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parser)
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parser.Parse('''<a>
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<b>
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<c/>
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</b>
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</a>''', 1)
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def test_parse_only_xml_data():
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# http://python.org/sf/1296433
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#
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xml = "<?xml version='1.0' encoding='iso8859'?><s>%s</s>" % ('a' * 1025)
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# this one doesn't crash
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#xml = "<?xml version='1.0'?><s>%s</s>" % ('a' * 10000)
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def handler(text):
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raise Exception
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parser = expat.ParserCreate()
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parser.CharacterDataHandler = handler
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try:
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parser.Parse(xml)
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except:
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pass
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test_parse_only_xml_data()
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