Merged revisions 78838-78839,78917,78919,78934,78937 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk ........ r78838 | florent.xicluna | 2010-03-11 15:36:19 +0100 (jeu, 11 mar 2010) | 2 lines Issue #6472: The xml.etree package is updated to ElementTree 1.3. The cElementTree module is updated too. ........ r78839 | florent.xicluna | 2010-03-11 16:55:11 +0100 (jeu, 11 mar 2010) | 2 lines Fix repr of tree Element on windows. ........ r78917 | florent.xicluna | 2010-03-13 12:18:49 +0100 (sam, 13 mar 2010) | 2 lines Move the xml test data to their own directory. ........ r78919 | florent.xicluna | 2010-03-13 13:41:48 +0100 (sam, 13 mar 2010) | 2 lines Do not chdir when running test_xml_etree, and enhance the findfile helper. ........ r78934 | florent.xicluna | 2010-03-13 18:56:19 +0100 (sam, 13 mar 2010) | 2 lines Update some parts of the xml.etree documentation. ........ r78937 | florent.xicluna | 2010-03-13 21:30:15 +0100 (sam, 13 mar 2010) | 3 lines Add the keyword argument "method=None" to the .write() method and the tostring/tostringlist functions. Update the function, class and method signatures, according to the new convention. ........
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Florent Xicluna
parent
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@ -6,9 +6,9 @@
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.. moduleauthor:: Fredrik Lundh <fredrik@pythonware.com>
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The Element type is a flexible container object, designed to store hierarchical
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data structures in memory. The type can be described as a cross between a list
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and a dictionary.
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The :class:`Element` type is a flexible container object, designed to store
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hierarchical data structures in memory. The type can be described as a cross
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between a list and a dictionary.
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Each element has a number of properties associated with it:
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@ -23,7 +23,8 @@ Each element has a number of properties associated with it:
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* a number of child elements, stored in a Python sequence
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To create an element instance, use the Element or SubElement factory functions.
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To create an element instance, use the :class:`Element` constructor or the
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:func:`SubElement` factory function.
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The :class:`ElementTree` class can be used to wrap an element structure, and
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convert it from and to XML.
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@ -31,8 +32,14 @@ convert it from and to XML.
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A C implementation of this API is available as :mod:`xml.etree.cElementTree`.
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See http://effbot.org/zone/element-index.htm for tutorials and links to other
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docs. Fredrik Lundh's page is also the location of the development version of the
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xml.etree.ElementTree.
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docs. Fredrik Lundh's page is also the location of the development version of
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the xml.etree.ElementTree.
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.. versionchanged:: 2.7
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The ElementTree API is updated to 1.3. For more information, see
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`Introducing ElementTree 1.3
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<http://effbot.org/zone/elementtree-13-intro.htm>`_.
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.. _elementtree-functions:
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@ -43,16 +50,16 @@ Functions
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.. function:: Comment(text=None)
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Comment element factory. This factory function creates a special element
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that will be serialized as an XML comment. The comment string can be either
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an ASCII-only :class:`bytes` object or a :class:`str` object. *text* is a
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string containing the comment string. Returns an element instance
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that will be serialized as an XML comment by the standard serializer. The
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comment string can be either a bytestring or a Unicode string. *text* is a
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string containing the comment string. Returns an element instance
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representing a comment.
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.. function:: dump(elem)
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Writes an element tree or element structure to sys.stdout. This function should
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be used for debugging only.
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Writes an element tree or element structure to sys.stdout. This function
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should be used for debugging only.
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The exact output format is implementation dependent. In this version, it's
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written as an ordinary XML file.
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@ -60,38 +67,36 @@ Functions
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*elem* is an element tree or an individual element.
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.. function:: Element(tag, attrib={}, **extra)
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Element factory. This function returns an object implementing the standard
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Element interface. The exact class or type of that object is implementation
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dependent, but it will always be compatible with the _ElementInterface class in
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this module.
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The element name, attribute names, and attribute values can be either an
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ASCII-only :class:`bytes` object or a :class:`str` object. *tag* is the
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element name. *attrib* is an optional dictionary, containing element
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attributes. *extra* contains additional attributes, given as keyword
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arguments. Returns an element instance.
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.. function:: fromstring(text)
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Parses an XML section from a string constant. Same as XML. *text* is a string
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containing XML data. Returns an Element instance.
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Parses an XML section from a string constant. Same as XML. *text* is a
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string containing XML data. Returns an :class:`Element` instance.
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.. function:: fromstringlist(sequence, parser=None)
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Parses an XML document from a sequence of string fragments. *sequence* is a
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list or other sequence containing XML data fragments. *parser* is an
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optional parser instance. If not given, the standard :class:`XMLParser`
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parser is used. Returns an :class:`Element` instance.
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.. versionadded:: 2.7
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.. function:: iselement(element)
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Checks if an object appears to be a valid element object. *element* is an
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element instance. Returns a true value if this is an element object.
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Checks if an object appears to be a valid element object. *element* is an
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element instance. Returns a true value if this is an element object.
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.. function:: iterparse(source, events=None)
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.. function:: iterparse(source, events=None, parser=None)
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Parses an XML section into an element tree incrementally, and reports what's
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going on to the user. *source* is a filename or file object containing XML data.
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*events* is a list of events to report back. If omitted, only "end" events are
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reported. Returns an :term:`iterator` providing ``(event, elem)`` pairs.
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going on to the user. *source* is a filename or file object containing XML
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data. *events* is a list of events to report back. If omitted, only "end"
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events are reported. *parser* is an optional parser instance. If not
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given, the standard :class:`XMLParser` parser is used. Returns an
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:term:`iterator` providing ``(event, elem)`` pairs.
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.. note::
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@ -106,196 +111,267 @@ Functions
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.. function:: parse(source, parser=None)
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Parses an XML section into an element tree. *source* is a filename or file
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object containing XML data. *parser* is an optional parser instance. If not
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given, the standard XMLTreeBuilder parser is used. Returns an ElementTree
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instance.
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Parses an XML section into an element tree. *source* is a filename or file
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object containing XML data. *parser* is an optional parser instance. If
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not given, the standard :class:`XMLParser` parser is used. Returns an
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:class:`ElementTree` instance.
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.. function:: ProcessingInstruction(target, text=None)
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PI element factory. This factory function creates a special element that will
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be serialized as an XML processing instruction. *target* is a string containing
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the PI target. *text* is a string containing the PI contents, if given. Returns
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an element instance, representing a processing instruction.
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PI element factory. This factory function creates a special element that
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will be serialized as an XML processing instruction. *target* is a string
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containing the PI target. *text* is a string containing the PI contents, if
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given. Returns an element instance, representing a processing instruction.
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.. function:: register_namespace(prefix, uri)
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Registers a namespace prefix. The registry is global, and any existing
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mapping for either the given prefix or the namespace URI will be removed.
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*prefix* is a namespace prefix. *uri* is a namespace uri. Tags and
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attributes in this namespace will be serialized with the given prefix, if at
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all possible.
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.. versionadded:: 2.7
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.. function:: SubElement(parent, tag, attrib={}, **extra)
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Subelement factory. This function creates an element instance, and appends it
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to an existing element.
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Subelement factory. This function creates an element instance, and appends
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it to an existing element.
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The element name, attribute names, and attribute values can be an ASCII-only
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:class:`bytes` object or a :class:`str` object. *parent* is the parent
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element. *tag* is the subelement name. *attrib* is an optional dictionary,
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containing element attributes. *extra* contains additional attributes, given
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as keyword arguments. Returns an element instance.
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The element name, attribute names, and attribute values can be either
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bytestrings or Unicode strings. *parent* is the parent element. *tag* is
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the subelement name. *attrib* is an optional dictionary, containing element
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attributes. *extra* contains additional attributes, given as keyword
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arguments. Returns an element instance.
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.. function:: tostring(element, encoding=None)
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.. function:: tostring(element, encoding=None, method=None)
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Generates a string representation of an XML element, including all subelements.
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*element* is an Element instance. *encoding* is the output encoding (default is
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US-ASCII). Returns an encoded string containing the XML data.
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Generates a string representation of an XML element, including all
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subelements. *element* is an :class:`Element` instance. *encoding* is the
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output encoding (default is None). *method* is either ``"xml"``,
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``"html"`` or ``"text"`` (default is ``"xml"``). Returns an (optionally)
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encoded string containing the XML data.
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.. function:: XML(text)
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.. function:: tostringlist(element, encoding=None, method=None)
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Generates a string representation of an XML element, including all
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subelements. *element* is an :class:`Element` instance. *encoding* is the
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output encoding (default is None). *method* is either ``"xml"``,
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``"html"`` or ``"text"`` (default is ``"xml"``). Returns a sequence object
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containing the XML data.
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.. versionadded:: 2.7
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.. function:: XML(text, parser=None)
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Parses an XML section from a string constant. This function can be used to
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embed "XML literals" in Python code. *text* is a string containing XML data.
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Returns an Element instance.
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embed "XML literals" in Python code. *text* is a string containing XML
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data. *parser* is an optional parser instance. If not given, the standard
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:class:`XMLParser` parser is used. Returns an :class:`Element` instance.
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.. function:: XMLID(text)
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.. function:: XMLID(text, parser=None)
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Parses an XML section from a string constant, and also returns a dictionary
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which maps from element id:s to elements. *text* is a string containing XML
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data. Returns a tuple containing an Element instance and a dictionary.
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which maps from element id:s to elements. *text* is a string containing XML
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data. *parser* is an optional parser instance. If not given, the standard
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:class:`XMLParser` parser is used. Returns a tuple containing an
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:class:`Element` instance and a dictionary.
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.. _elementtree-element-interface:
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.. _elementtree-element-objects:
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The Element Interface
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---------------------
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Element Objects
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---------------
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Element objects returned by Element or SubElement have the following methods
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and attributes.
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.. class:: Element(tag, attrib={}, **extra)
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.. attribute:: Element.tag
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Element class. This class defines the Element interface, and provides a
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reference implementation of this interface.
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A string identifying what kind of data this element represents (the element
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type, in other words).
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The element name, attribute names, and attribute values can be either
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bytestrings or Unicode strings. *tag* is the element name. *attrib* is
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an optional dictionary, containing element attributes. *extra* contains
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additional attributes, given as keyword arguments.
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.. attribute:: Element.text
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.. attribute:: tag
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The *text* attribute can be used to hold additional data associated with the
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element. As the name implies this attribute is usually a string but may be any
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application-specific object. If the element is created from an XML file the
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attribute will contain any text found between the element tags.
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A string identifying what kind of data this element represents (the
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element type, in other words).
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.. attribute:: Element.tail
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.. attribute:: text
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The *tail* attribute can be used to hold additional data associated with the
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element. This attribute is usually a string but may be any application-specific
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object. If the element is created from an XML file the attribute will contain
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any text found after the element's end tag and before the next tag.
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The *text* attribute can be used to hold additional data associated with
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the element. As the name implies this attribute is usually a string but
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may be any application-specific object. If the element is created from
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an XML file the attribute will contain any text found between the element
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tags.
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.. attribute:: Element.attrib
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.. attribute:: tail
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A dictionary containing the element's attributes. Note that while the *attrib*
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value is always a real mutable Python dictionary, an ElementTree implementation
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may choose to use another internal representation, and create the dictionary
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only if someone asks for it. To take advantage of such implementations, use the
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dictionary methods below whenever possible.
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The *tail* attribute can be used to hold additional data associated with
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the element. This attribute is usually a string but may be any
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application-specific object. If the element is created from an XML file
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the attribute will contain any text found after the element's end tag and
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before the next tag.
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The following dictionary-like methods work on the element attributes.
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.. attribute:: attrib
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.. method:: Element.clear()
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A dictionary containing the element's attributes. Note that while the
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*attrib* value is always a real mutable Python dictionary, an ElementTree
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implementation may choose to use another internal representation, and
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create the dictionary only if someone asks for it. To take advantage of
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such implementations, use the dictionary methods below whenever possible.
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Resets an element. This function removes all subelements, clears all
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attributes, and sets the text and tail attributes to None.
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The following dictionary-like methods work on the element attributes.
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.. method:: Element.get(key, default=None)
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.. method:: clear()
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Gets the element attribute named *key*.
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Resets an element. This function removes all subelements, clears all
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attributes, and sets the text and tail attributes to None.
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Returns the attribute value, or *default* if the attribute was not found.
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.. method:: get(key, default=None)
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.. method:: Element.items()
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Gets the element attribute named *key*.
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Returns the element attributes as a sequence of (name, value) pairs. The
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attributes are returned in an arbitrary order.
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Returns the attribute value, or *default* if the attribute was not found.
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.. method:: Element.keys()
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.. method:: items()
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Returns the elements attribute names as a list. The names are returned in an
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arbitrary order.
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Returns the element attributes as a sequence of (name, value) pairs. The
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attributes are returned in an arbitrary order.
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.. method:: Element.set(key, value)
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.. method:: keys()
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Set the attribute *key* on the element to *value*.
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Returns the elements attribute names as a list. The names are returned
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in an arbitrary order.
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The following methods work on the element's children (subelements).
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.. method:: set(key, value)
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.. method:: Element.append(subelement)
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Set the attribute *key* on the element to *value*.
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Adds the element *subelement* to the end of this elements internal list of
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subelements.
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The following methods work on the element's children (subelements).
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.. method:: Element.find(match)
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.. method:: append(subelement)
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Finds the first subelement matching *match*. *match* may be a tag name or path.
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Returns an element instance or ``None``.
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Adds the element *subelement* to the end of this elements internal list
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of subelements.
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.. method:: Element.findall(match)
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.. method:: extend(subelements)
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Finds all subelements matching *match*. *match* may be a tag name or path.
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Returns an iterable yielding all matching elements in document order.
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Appends *subelements* from a sequence object with zero or more elements.
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Raises :exc:`AssertionError` if a subelement is not a valid object.
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.. versionadded:: 2.7
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.. method:: Element.findtext(condition, default=None)
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Finds text for the first subelement matching *condition*. *condition* may be a
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tag name or path. Returns the text content of the first matching element, or
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*default* if no element was found. Note that if the matching element has no
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text content an empty string is returned.
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.. method:: find(match)
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Finds the first subelement matching *match*. *match* may be a tag name
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or path. Returns an element instance or ``None``.
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.. method:: Element.getchildren()
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Returns all subelements. The elements are returned in document order.
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.. method:: findall(match)
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Finds all matching subelements, by tag name or path. Returns a list
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containing all matching elements in document order.
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.. method:: Element.getiterator(tag=None)
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Creates a tree iterator with the current element as the root. The iterator
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iterates over this element and all elements below it, in document (depth first)
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order. If *tag* is not ``None`` or ``'*'``, only elements whose tag equals
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*tag* are returned from the iterator.
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.. method:: findtext(match, default=None)
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Finds text for the first subelement matching *match*. *match* may be
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a tag name or path. Returns the text content of the first matching
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element, or *default* if no element was found. Note that if the matching
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element has no text content an empty string is returned.
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.. method:: Element.insert(index, element)
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Inserts a subelement at the given position in this element.
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.. method:: getchildren()
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.. deprecated:: 2.7
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Use ``list(elem)`` or iteration.
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.. method:: Element.makeelement(tag, attrib)
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Creates a new element object of the same type as this element. Do not call this
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method, use the SubElement factory function instead.
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.. method:: getiterator(tag=None)
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.. deprecated:: 2.7
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Use method :meth:`Element.iter` instead.
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.. method:: Element.remove(subelement)
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Removes *subelement* from the element. Unlike the findXYZ methods this method
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compares elements based on the instance identity, not on tag value or contents.
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.. method:: insert(index, element)
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Element objects also support the following sequence type methods for working
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with subelements: :meth:`__delitem__`, :meth:`__getitem__`, :meth:`__setitem__`,
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:meth:`__len__`.
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Inserts a subelement at the given position in this element.
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Caution: Because Element objects do not define a :meth:`__bool__` method,
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elements with no subelements will test as ``False``. ::
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element = root.find('foo')
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.. method:: iter(tag=None)
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if not element: # careful!
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print("element not found, or element has no subelements")
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Creates a tree :term:`iterator` with the current element as the root.
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The iterator iterates over this element and all elements below it, in
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document (depth first) order. If *tag* is not ``None`` or ``'*'``, only
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elements whose tag equals *tag* are returned from the iterator. If the
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tree structure is modified during iteration, the result is undefined.
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|
||||
if element is None:
|
||||
print("element not found")
|
||||
|
||||
.. method:: iterfind(match)
|
||||
|
||||
Finds all matching subelements, by tag name or path. Returns an iterable
|
||||
yielding all matching elements in document order.
|
||||
|
||||
.. versionadded:: 2.7
|
||||
|
||||
|
||||
.. method:: itertext()
|
||||
|
||||
Creates a text iterator. The iterator loops over this element and all
|
||||
subelements, in document order, and returns all inner text.
|
||||
|
||||
.. versionadded:: 2.7
|
||||
|
||||
|
||||
.. method:: makeelement(tag, attrib)
|
||||
|
||||
Creates a new element object of the same type as this element. Do not
|
||||
call this method, use the :func:`SubElement` factory function instead.
|
||||
|
||||
|
||||
.. method:: remove(subelement)
|
||||
|
||||
Removes *subelement* from the element. Unlike the find\* methods this
|
||||
method compares elements based on the instance identity, not on tag value
|
||||
or contents.
|
||||
|
||||
:class:`Element` objects also support the following sequence type methods
|
||||
for working with subelements: :meth:`__delitem__`, :meth:`__getitem__`,
|
||||
:meth:`__setitem__`, :meth:`__len__`.
|
||||
|
||||
Caution: Elements with no subelements will test as ``False``. This behavior
|
||||
will change in future versions. Use specific ``len(elem)`` or ``elem is
|
||||
None`` test instead. ::
|
||||
|
||||
element = root.find('foo')
|
||||
|
||||
if not element: # careful!
|
||||
print("element not found, or element has no subelements")
|
||||
|
||||
if element is None:
|
||||
print("element not found")
|
||||
|
||||
|
||||
.. _elementtree-elementtree-objects:
|
||||
|
|
@ -306,70 +382,88 @@ ElementTree Objects
|
|||
|
||||
.. class:: ElementTree(element=None, file=None)
|
||||
|
||||
ElementTree wrapper class. This class represents an entire element hierarchy,
|
||||
and adds some extra support for serialization to and from standard XML.
|
||||
ElementTree wrapper class. This class represents an entire element
|
||||
hierarchy, and adds some extra support for serialization to and from
|
||||
standard XML.
|
||||
|
||||
*element* is the root element. The tree is initialized with the contents of the
|
||||
XML *file* if given.
|
||||
*element* is the root element. The tree is initialized with the contents
|
||||
of the XML *file* if given.
|
||||
|
||||
|
||||
.. method:: _setroot(element)
|
||||
|
||||
Replaces the root element for this tree. This discards the current
|
||||
contents of the tree, and replaces it with the given element. Use with
|
||||
care. *element* is an element instance.
|
||||
care. *element* is an element instance.
|
||||
|
||||
|
||||
.. method:: find(path)
|
||||
.. method:: find(match)
|
||||
|
||||
Finds the first toplevel element with given tag. Same as
|
||||
getroot().find(path). *path* is the element to look for. Returns the
|
||||
first matching element, or ``None`` if no element was found.
|
||||
Finds the first toplevel element matching *match*. *match* may be a tag
|
||||
name or path. Same as getroot().find(match). Returns the first matching
|
||||
element, or ``None`` if no element was found.
|
||||
|
||||
|
||||
.. method:: findall(path)
|
||||
.. method:: findall(match)
|
||||
|
||||
Finds all toplevel elements with the given tag. Same as
|
||||
getroot().findall(path). *path* is the element to look for. Returns a
|
||||
list or :term:`iterator` containing all matching elements, in document
|
||||
order.
|
||||
Finds all matching subelements, by tag name or path. Same as
|
||||
getroot().findall(match). *match* may be a tag name or path. Returns a
|
||||
list containing all matching elements, in document order.
|
||||
|
||||
|
||||
.. method:: findtext(path, default=None)
|
||||
.. method:: findtext(match, default=None)
|
||||
|
||||
Finds the element text for the first toplevel element with given tag.
|
||||
Same as getroot().findtext(path). *path* is the toplevel element to look
|
||||
for. *default* is the value to return if the element was not
|
||||
found. Returns the text content of the first matching element, or the
|
||||
default value no element was found. Note that if the element has is
|
||||
found, but has no text content, this method returns an empty string.
|
||||
Same as getroot().findtext(match). *match* may be a tag name or path.
|
||||
*default* is the value to return if the element was not found. Returns
|
||||
the text content of the first matching element, or the default value no
|
||||
element was found. Note that if the element is found, but has no text
|
||||
content, this method returns an empty string.
|
||||
|
||||
|
||||
.. method:: getiterator(tag=None)
|
||||
|
||||
Creates and returns a tree iterator for the root element. The iterator
|
||||
loops over all elements in this tree, in section order. *tag* is the tag
|
||||
to look for (default is to return all elements)
|
||||
.. deprecated:: 2.7
|
||||
Use method :meth:`ElementTree.iter` instead.
|
||||
|
||||
|
||||
.. method:: getroot()
|
||||
|
||||
Returns the root element for this tree.
|
||||
|
||||
|
||||
.. method:: iter(tag=None)
|
||||
|
||||
Creates and returns a tree iterator for the root element. The iterator
|
||||
loops over all elements in this tree, in section order. *tag* is the tag
|
||||
to look for (default is to return all elements)
|
||||
|
||||
|
||||
.. method:: iterfind(match)
|
||||
|
||||
Finds all matching subelements, by tag name or path. Same as
|
||||
getroot().iterfind(match). Returns an iterable yielding all matching
|
||||
elements in document order.
|
||||
|
||||
.. versionadded:: 2.7
|
||||
|
||||
|
||||
.. method:: parse(source, parser=None)
|
||||
|
||||
Loads an external XML section into this element tree. *source* is a file
|
||||
name or file object. *parser* is an optional parser instance. If not
|
||||
given, the standard XMLTreeBuilder parser is used. Returns the section
|
||||
Loads an external XML section into this element tree. *source* is a file
|
||||
name or file object. *parser* is an optional parser instance. If not
|
||||
given, the standard XMLParser parser is used. Returns the section
|
||||
root element.
|
||||
|
||||
|
||||
.. method:: write(file, encoding=None)
|
||||
.. method:: write(file, encoding=None, xml_declaration=None, method=None)
|
||||
|
||||
Writes the element tree to a file, as XML. *file* is a file name, or a
|
||||
file object opened for writing. *encoding* [1]_ is the output encoding
|
||||
(default is US-ASCII).
|
||||
Writes the element tree to a file, as XML. *file* is a file name, or a
|
||||
file object opened for writing. *encoding* [1]_ is the output encoding
|
||||
(default is None). *xml_declaration* controls if an XML declaration
|
||||
should be added to the file. Use False for never, True for always, None
|
||||
for only if not US-ASCII or UTF-8 (default is None). *method* is either
|
||||
``"xml"``, ``"html"`` or ``"text"`` (default is ``"xml"``). Returns an
|
||||
(optionally) encoded string.
|
||||
|
||||
This is the XML file that is going to be manipulated::
|
||||
|
||||
|
|
@ -388,13 +482,13 @@ Example of changing the attribute "target" of every link in first paragraph::
|
|||
>>> from xml.etree.ElementTree import ElementTree
|
||||
>>> tree = ElementTree()
|
||||
>>> tree.parse("index.xhtml")
|
||||
<Element html at b7d3f1ec>
|
||||
<Element 'html' at 0xb77e6fac>
|
||||
>>> p = tree.find("body/p") # Finds first occurrence of tag p in body
|
||||
>>> p
|
||||
<Element p at 8416e0c>
|
||||
>>> links = p.getiterator("a") # Returns list of all links
|
||||
<Element 'p' at 0xb77ec26c>
|
||||
>>> links = list(p.iter("a")) # Returns list of all links
|
||||
>>> links
|
||||
[<Element a at b7d4f9ec>, <Element a at b7d4fb0c>]
|
||||
[<Element 'a' at 0xb77ec2ac>, <Element 'a' at 0xb77ec1cc>]
|
||||
>>> for i in links: # Iterates through all found links
|
||||
... i.attrib["target"] = "blank"
|
||||
>>> tree.write("output.xhtml")
|
||||
|
|
@ -407,12 +501,12 @@ QName Objects
|
|||
|
||||
.. class:: QName(text_or_uri, tag=None)
|
||||
|
||||
QName wrapper. This can be used to wrap a QName attribute value, in order to
|
||||
get proper namespace handling on output. *text_or_uri* is a string containing
|
||||
the QName value, in the form {uri}local, or, if the tag argument is given, the
|
||||
URI part of a QName. If *tag* is given, the first argument is interpreted as an
|
||||
URI, and this argument is interpreted as a local name. :class:`QName` instances
|
||||
are opaque.
|
||||
QName wrapper. This can be used to wrap a QName attribute value, in order
|
||||
to get proper namespace handling on output. *text_or_uri* is a string
|
||||
containing the QName value, in the form {uri}local, or, if the tag argument
|
||||
is given, the URI part of a QName. If *tag* is given, the first argument is
|
||||
interpreted as an URI, and this argument is interpreted as a local name.
|
||||
:class:`QName` instances are opaque.
|
||||
|
||||
|
||||
.. _elementtree-treebuilder-objects:
|
||||
|
|
@ -423,74 +517,89 @@ TreeBuilder Objects
|
|||
|
||||
.. class:: TreeBuilder(element_factory=None)
|
||||
|
||||
Generic element structure builder. This builder converts a sequence of start,
|
||||
data, and end method calls to a well-formed element structure. You can use this
|
||||
class to build an element structure using a custom XML parser, or a parser for
|
||||
some other XML-like format. The *element_factory* is called to create new
|
||||
Element instances when given.
|
||||
Generic element structure builder. This builder converts a sequence of
|
||||
start, data, and end method calls to a well-formed element structure. You
|
||||
can use this class to build an element structure using a custom XML parser,
|
||||
or a parser for some other XML-like format. The *element_factory* is called
|
||||
to create new :class:`Element` instances when given.
|
||||
|
||||
|
||||
.. method:: close()
|
||||
|
||||
Flushes the parser buffers, and returns the toplevel document
|
||||
element. Returns an Element instance.
|
||||
Flushes the builder buffers, and returns the toplevel document
|
||||
element. Returns an :class:`Element` instance.
|
||||
|
||||
|
||||
.. method:: data(data)
|
||||
|
||||
Adds text to the current element. *data* is a string. This should be
|
||||
either an ASCII-only :class:`bytes` object or a :class:`str` object.
|
||||
Adds text to the current element. *data* is a string. This should be
|
||||
either a bytestring, or a Unicode string.
|
||||
|
||||
|
||||
.. method:: end(tag)
|
||||
|
||||
Closes the current element. *tag* is the element name. Returns the closed
|
||||
element.
|
||||
Closes the current element. *tag* is the element name. Returns the
|
||||
closed element.
|
||||
|
||||
|
||||
.. method:: start(tag, attrs)
|
||||
|
||||
Opens a new element. *tag* is the element name. *attrs* is a dictionary
|
||||
containing element attributes. Returns the opened element.
|
||||
Opens a new element. *tag* is the element name. *attrs* is a dictionary
|
||||
containing element attributes. Returns the opened element.
|
||||
|
||||
|
||||
.. _elementtree-xmltreebuilder-objects:
|
||||
In addition, a custom :class:`TreeBuilder` object can provide the
|
||||
following method:
|
||||
|
||||
XMLTreeBuilder Objects
|
||||
----------------------
|
||||
.. method:: doctype(name, pubid, system)
|
||||
|
||||
Handles a doctype declaration. *name* is the doctype name. *pubid* is
|
||||
the public identifier. *system* is the system identifier. This method
|
||||
does not exist on the default :class:`TreeBuilder` class.
|
||||
|
||||
.. versionadded:: 2.7
|
||||
|
||||
|
||||
.. class:: XMLTreeBuilder(html=0, target=None)
|
||||
.. _elementtree-xmlparser-objects:
|
||||
|
||||
Element structure builder for XML source data, based on the expat parser. *html*
|
||||
are predefined HTML entities. This flag is not supported by the current
|
||||
implementation. *target* is the target object. If omitted, the builder uses an
|
||||
instance of the standard TreeBuilder class.
|
||||
XMLParser Objects
|
||||
-----------------
|
||||
|
||||
|
||||
.. class:: XMLParser(html=0, target=None, encoding=None)
|
||||
|
||||
:class:`Element` structure builder for XML source data, based on the expat
|
||||
parser. *html* are predefined HTML entities. This flag is not supported by
|
||||
the current implementation. *target* is the target object. If omitted, the
|
||||
builder uses an instance of the standard TreeBuilder class. *encoding* [1]_
|
||||
is optional. If given, the value overrides the encoding specified in the
|
||||
XML file.
|
||||
|
||||
|
||||
.. method:: close()
|
||||
|
||||
Finishes feeding data to the parser. Returns an element structure.
|
||||
Finishes feeding data to the parser. Returns an element structure.
|
||||
|
||||
|
||||
.. method:: doctype(name, pubid, system)
|
||||
|
||||
Handles a doctype declaration. *name* is the doctype name. *pubid* is the
|
||||
public identifier. *system* is the system identifier.
|
||||
.. deprecated:: 2.7
|
||||
Define the :meth:`TreeBuilder.doctype` method on a custom TreeBuilder
|
||||
target.
|
||||
|
||||
|
||||
.. method:: feed(data)
|
||||
|
||||
Feeds data to the parser. *data* is encoded data.
|
||||
Feeds data to the parser. *data* is encoded data.
|
||||
|
||||
:meth:`XMLTreeBuilder.feed` calls *target*\'s :meth:`start` method
|
||||
:meth:`XMLParser.feed` calls *target*\'s :meth:`start` method
|
||||
for each opening tag, its :meth:`end` method for each closing tag,
|
||||
and data is processed by method :meth:`data`. :meth:`XMLTreeBuilder.close`
|
||||
and data is processed by method :meth:`data`. :meth:`XMLParser.close`
|
||||
calls *target*\'s method :meth:`close`.
|
||||
:class:`XMLTreeBuilder` can be used not only for building a tree structure.
|
||||
:class:`XMLParser` can be used not only for building a tree structure.
|
||||
This is an example of counting the maximum depth of an XML file::
|
||||
|
||||
>>> from xml.etree.ElementTree import XMLTreeBuilder
|
||||
>>> from xml.etree.ElementTree import XMLParser
|
||||
>>> class MaxDepth: # The target object of the parser
|
||||
... maxDepth = 0
|
||||
... depth = 0
|
||||
|
|
@ -506,7 +615,7 @@ This is an example of counting the maximum depth of an XML file::
|
|||
... return self.maxDepth
|
||||
...
|
||||
>>> target = MaxDepth()
|
||||
>>> parser = XMLTreeBuilder(target=target)
|
||||
>>> parser = XMLParser(target=target)
|
||||
>>> exampleXml = """
|
||||
... <a>
|
||||
... <b>
|
||||
|
|
@ -526,7 +635,6 @@ This is an example of counting the maximum depth of an XML file::
|
|||
.. rubric:: Footnotes
|
||||
|
||||
.. [#] The encoding string included in XML output should conform to the
|
||||
appropriate standards. For example, "UTF-8" is valid, but "UTF8" is
|
||||
not. See http://www.w3.org/TR/2006/REC-xml11-20060816/#NT-EncodingDecl
|
||||
appropriate standards. For example, "UTF-8" is valid, but "UTF8" is
|
||||
not. See http://www.w3.org/TR/2006/REC-xml11-20060816/#NT-EncodingDecl
|
||||
and http://www.iana.org/assignments/character-sets.
|
||||
|
||||
|
|
|
|||
|
|
@ -1,23 +0,0 @@
|
|||
:mod:`xml.etree` --- The ElementTree API for XML
|
||||
================================================
|
||||
|
||||
.. module:: xml.etree
|
||||
:synopsis: Package containing common ElementTree modules.
|
||||
.. moduleauthor:: Fredrik Lundh <fredrik@pythonware.com>
|
||||
|
||||
|
||||
The ElementTree package is a simple, efficient, and quite popular library for
|
||||
XML manipulation in Python. The :mod:`xml.etree` package contains the most
|
||||
common components from the ElementTree API library. In the current release,
|
||||
this package contains the :mod:`ElementTree`, :mod:`ElementPath`, and
|
||||
:mod:`ElementInclude` modules from the full ElementTree distribution.
|
||||
|
||||
.. XXX To be continued!
|
||||
|
||||
|
||||
.. seealso::
|
||||
|
||||
`ElementTree Overview <http://effbot.org/tag/elementtree>`_
|
||||
The home page for :mod:`ElementTree`. This includes links to additional
|
||||
documentation, alternative implementations, and other add-ons.
|
||||
|
||||
|
|
@ -402,12 +402,14 @@ def temp_cwd(name='tempcwd', quiet=False):
|
|||
rmtree(name)
|
||||
|
||||
|
||||
def findfile(file, here=__file__):
|
||||
def findfile(file, here=__file__, subdir=None):
|
||||
"""Try to find a file on sys.path and the working directory. If it is not
|
||||
found the argument passed to the function is returned (this does not
|
||||
necessarily signal failure; could still be the legitimate path)."""
|
||||
if os.path.isabs(file):
|
||||
return file
|
||||
if subdir is not None:
|
||||
file = os.path.join(subdir, file)
|
||||
path = sys.path
|
||||
path = [os.path.dirname(here)] + path
|
||||
for dn in path:
|
||||
|
|
|
|||
|
|
@ -1,9 +1,7 @@
|
|||
# test for xml.dom.minidom
|
||||
|
||||
import os
|
||||
import sys
|
||||
import pickle
|
||||
from test.support import verbose, run_unittest
|
||||
from test.support import verbose, run_unittest, findfile
|
||||
import unittest
|
||||
|
||||
import xml.dom
|
||||
|
|
@ -14,12 +12,8 @@ from xml.dom.minidom import parse, Node, Document, parseString
|
|||
from xml.dom.minidom import getDOMImplementation
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
base = sys.argv[0]
|
||||
else:
|
||||
base = __file__
|
||||
tstfile = os.path.join(os.path.dirname(base), "test.xml")
|
||||
del base
|
||||
tstfile = findfile("test.xml", subdir="xmltestdata")
|
||||
|
||||
|
||||
# The tests of DocumentType importing use these helpers to construct
|
||||
# the documents to work with, since not all DOM builders actually
|
||||
|
|
|
|||
|
|
@ -15,7 +15,9 @@ from xml.sax.xmlreader import InputSource, AttributesImpl, AttributesNSImpl
|
|||
from io import StringIO
|
||||
from test.support import findfile, run_unittest
|
||||
import unittest
|
||||
import os
|
||||
|
||||
TEST_XMLFILE = findfile("test.xml", subdir="xmltestdata")
|
||||
TEST_XMLFILE_OUT = findfile("test.xml.out", subdir="xmltestdata")
|
||||
|
||||
ns_uri = "http://www.python.org/xml-ns/saxtest/"
|
||||
|
||||
|
|
@ -311,7 +313,7 @@ class XMLFilterBaseTest(unittest.TestCase):
|
|||
#
|
||||
# ===========================================================================
|
||||
|
||||
xml_test_out = open(findfile("test.xml.out")).read()
|
||||
xml_test_out = open(TEST_XMLFILE_OUT).read()
|
||||
|
||||
class ExpatReaderTest(XmlTestBase):
|
||||
|
||||
|
|
@ -323,7 +325,7 @@ class ExpatReaderTest(XmlTestBase):
|
|||
xmlgen = XMLGenerator(result)
|
||||
|
||||
parser.setContentHandler(xmlgen)
|
||||
parser.parse(open(findfile("test.xml")))
|
||||
parser.parse(open(TEST_XMLFILE))
|
||||
|
||||
self.assertEquals(result.getvalue(), xml_test_out)
|
||||
|
||||
|
|
@ -452,7 +454,7 @@ class ExpatReaderTest(XmlTestBase):
|
|||
xmlgen = XMLGenerator(result)
|
||||
|
||||
parser.setContentHandler(xmlgen)
|
||||
parser.parse(findfile("test.xml"))
|
||||
parser.parse(TEST_XMLFILE)
|
||||
|
||||
self.assertEquals(result.getvalue(), xml_test_out)
|
||||
|
||||
|
|
@ -462,7 +464,7 @@ class ExpatReaderTest(XmlTestBase):
|
|||
xmlgen = XMLGenerator(result)
|
||||
|
||||
parser.setContentHandler(xmlgen)
|
||||
parser.parse(InputSource(findfile("test.xml")))
|
||||
parser.parse(InputSource(TEST_XMLFILE))
|
||||
|
||||
self.assertEquals(result.getvalue(), xml_test_out)
|
||||
|
||||
|
|
@ -473,7 +475,7 @@ class ExpatReaderTest(XmlTestBase):
|
|||
|
||||
parser.setContentHandler(xmlgen)
|
||||
inpsrc = InputSource()
|
||||
inpsrc.setByteStream(open(findfile("test.xml")))
|
||||
inpsrc.setByteStream(open(TEST_XMLFILE))
|
||||
parser.parse(inpsrc)
|
||||
|
||||
self.assertEquals(result.getvalue(), xml_test_out)
|
||||
|
|
@ -534,9 +536,9 @@ class ExpatReaderTest(XmlTestBase):
|
|||
xmlgen = XMLGenerator(result)
|
||||
parser = create_parser()
|
||||
parser.setContentHandler(xmlgen)
|
||||
parser.parse(findfile("test.xml"))
|
||||
parser.parse(TEST_XMLFILE)
|
||||
|
||||
self.assertEquals(parser.getSystemId(), findfile("test.xml"))
|
||||
self.assertEquals(parser.getSystemId(), TEST_XMLFILE)
|
||||
self.assertEquals(parser.getPublicId(), None)
|
||||
|
||||
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
|
|
@ -1,31 +1,11 @@
|
|||
# xml.etree test for cElementTree
|
||||
|
||||
import doctest
|
||||
import sys
|
||||
|
||||
from test import support
|
||||
|
||||
ET = support.import_module('xml.etree.cElementTree')
|
||||
cET = support.import_module('xml.etree.cElementTree')
|
||||
|
||||
SAMPLE_XML = """
|
||||
<body>
|
||||
<tag>text</tag>
|
||||
<tag />
|
||||
<section>
|
||||
<tag>subtext</tag>
|
||||
</section>
|
||||
</body>
|
||||
"""
|
||||
|
||||
SAMPLE_XML_NS = """
|
||||
<body xmlns="http://effbot.org/ns">
|
||||
<tag>text</tag>
|
||||
<tag />
|
||||
<section>
|
||||
<tag>subtext</tag>
|
||||
</section>
|
||||
</body>
|
||||
"""
|
||||
# cElementTree specific tests
|
||||
|
||||
def sanity():
|
||||
"""
|
||||
|
|
@ -34,187 +14,26 @@ def sanity():
|
|||
>>> from xml.etree import cElementTree
|
||||
"""
|
||||
|
||||
def check_method(method):
|
||||
if not hasattr(method, '__call__'):
|
||||
print(method, "not callable")
|
||||
|
||||
def serialize(ET, elem):
|
||||
import io
|
||||
file = io.StringIO()
|
||||
tree = ET.ElementTree(elem)
|
||||
tree.write(file)
|
||||
return file.getvalue()
|
||||
|
||||
def summarize(elem):
|
||||
return elem.tag
|
||||
|
||||
def summarize_list(seq):
|
||||
return list(map(summarize, seq))
|
||||
|
||||
def interface():
|
||||
"""
|
||||
Test element tree interface.
|
||||
|
||||
>>> element = ET.Element("tag", key="value")
|
||||
>>> tree = ET.ElementTree(element)
|
||||
|
||||
Make sure all standard element methods exist.
|
||||
|
||||
>>> check_method(element.append)
|
||||
>>> check_method(element.insert)
|
||||
>>> check_method(element.remove)
|
||||
>>> check_method(element.getchildren)
|
||||
>>> check_method(element.find)
|
||||
>>> check_method(element.findall)
|
||||
>>> check_method(element.findtext)
|
||||
>>> check_method(element.clear)
|
||||
>>> check_method(element.get)
|
||||
>>> check_method(element.set)
|
||||
>>> check_method(element.keys)
|
||||
>>> check_method(element.items)
|
||||
>>> check_method(element.getiterator)
|
||||
|
||||
Basic method sanity checks.
|
||||
|
||||
>>> serialize(ET, element) # 1
|
||||
'<tag key="value" />'
|
||||
>>> subelement = ET.Element("subtag")
|
||||
>>> element.append(subelement)
|
||||
>>> serialize(ET, element) # 2
|
||||
'<tag key="value"><subtag /></tag>'
|
||||
>>> element.insert(0, subelement)
|
||||
>>> serialize(ET, element) # 3
|
||||
'<tag key="value"><subtag /><subtag /></tag>'
|
||||
>>> element.remove(subelement)
|
||||
>>> serialize(ET, element) # 4
|
||||
'<tag key="value"><subtag /></tag>'
|
||||
>>> element.remove(subelement)
|
||||
>>> serialize(ET, element) # 5
|
||||
'<tag key="value" />'
|
||||
>>> element.remove(subelement)
|
||||
Traceback (most recent call last):
|
||||
ValueError: list.remove(x): x not in list
|
||||
>>> serialize(ET, element) # 6
|
||||
'<tag key="value" />'
|
||||
"""
|
||||
|
||||
def find():
|
||||
"""
|
||||
Test find methods (including xpath syntax).
|
||||
|
||||
>>> elem = ET.XML(SAMPLE_XML)
|
||||
>>> elem.find("tag").tag
|
||||
'tag'
|
||||
>>> ET.ElementTree(elem).find("tag").tag
|
||||
'tag'
|
||||
>>> elem.find("section/tag").tag
|
||||
'tag'
|
||||
>>> ET.ElementTree(elem).find("section/tag").tag
|
||||
'tag'
|
||||
>>> elem.findtext("tag")
|
||||
'text'
|
||||
>>> elem.findtext("tog")
|
||||
>>> elem.findtext("tog", "default")
|
||||
'default'
|
||||
>>> ET.ElementTree(elem).findtext("tag")
|
||||
'text'
|
||||
>>> elem.findtext("section/tag")
|
||||
'subtext'
|
||||
>>> ET.ElementTree(elem).findtext("section/tag")
|
||||
'subtext'
|
||||
>>> summarize_list(elem.findall("tag"))
|
||||
['tag', 'tag']
|
||||
>>> summarize_list(elem.findall("*"))
|
||||
['tag', 'tag', 'section']
|
||||
>>> summarize_list(elem.findall(".//tag"))
|
||||
['tag', 'tag', 'tag']
|
||||
>>> summarize_list(elem.findall("section/tag"))
|
||||
['tag']
|
||||
>>> summarize_list(elem.findall("section//tag"))
|
||||
['tag']
|
||||
>>> summarize_list(elem.findall("section/*"))
|
||||
['tag']
|
||||
>>> summarize_list(elem.findall("section//*"))
|
||||
['tag']
|
||||
>>> summarize_list(elem.findall("section/.//*"))
|
||||
['tag']
|
||||
>>> summarize_list(elem.findall("*/*"))
|
||||
['tag']
|
||||
>>> summarize_list(elem.findall("*//*"))
|
||||
['tag']
|
||||
>>> summarize_list(elem.findall("*/tag"))
|
||||
['tag']
|
||||
>>> summarize_list(elem.findall("*/./tag"))
|
||||
['tag']
|
||||
>>> summarize_list(elem.findall("./tag"))
|
||||
['tag', 'tag']
|
||||
>>> summarize_list(elem.findall(".//tag"))
|
||||
['tag', 'tag', 'tag']
|
||||
>>> summarize_list(elem.findall("././tag"))
|
||||
['tag', 'tag']
|
||||
>>> summarize_list(ET.ElementTree(elem).findall("/tag"))
|
||||
['tag', 'tag']
|
||||
>>> summarize_list(ET.ElementTree(elem).findall("./tag"))
|
||||
['tag', 'tag']
|
||||
>>> elem = ET.XML(SAMPLE_XML_NS)
|
||||
>>> summarize_list(elem.findall("tag"))
|
||||
[]
|
||||
>>> summarize_list(elem.findall("{http://effbot.org/ns}tag"))
|
||||
['{http://effbot.org/ns}tag', '{http://effbot.org/ns}tag']
|
||||
>>> summarize_list(elem.findall(".//{http://effbot.org/ns}tag"))
|
||||
['{http://effbot.org/ns}tag', '{http://effbot.org/ns}tag', '{http://effbot.org/ns}tag']
|
||||
"""
|
||||
|
||||
def parseliteral():
|
||||
r"""
|
||||
|
||||
>>> element = ET.XML("<html><body>text</body></html>")
|
||||
>>> ET.ElementTree(element).write(sys.stdout)
|
||||
<html><body>text</body></html>
|
||||
>>> element = ET.fromstring("<html><body>text</body></html>")
|
||||
>>> ET.ElementTree(element).write(sys.stdout)
|
||||
<html><body>text</body></html>
|
||||
>>> print(ET.tostring(element))
|
||||
<html><body>text</body></html>
|
||||
>>> print(repr(ET.tostring(element, "ascii")))
|
||||
b"<?xml version='1.0' encoding='ascii'?>\n<html><body>text</body></html>"
|
||||
>>> _, ids = ET.XMLID("<html><body>text</body></html>")
|
||||
>>> len(ids)
|
||||
0
|
||||
>>> _, ids = ET.XMLID("<html><body id='body'>text</body></html>")
|
||||
>>> len(ids)
|
||||
1
|
||||
>>> ids["body"].tag
|
||||
'body'
|
||||
"""
|
||||
|
||||
def check_encoding(encoding):
|
||||
"""
|
||||
>>> check_encoding("ascii")
|
||||
>>> check_encoding("us-ascii")
|
||||
>>> check_encoding("iso-8859-1")
|
||||
>>> check_encoding("iso-8859-15")
|
||||
>>> check_encoding("cp437")
|
||||
>>> check_encoding("mac-roman")
|
||||
"""
|
||||
ET.XML(
|
||||
"<?xml version='1.0' encoding='%s'?><xml />" % encoding
|
||||
)
|
||||
|
||||
def bug_1534630():
|
||||
"""
|
||||
>>> bob = ET.TreeBuilder()
|
||||
>>> e = bob.data("data")
|
||||
>>> e = bob.start("tag", {})
|
||||
>>> e = bob.end("tag")
|
||||
>>> e = bob.close()
|
||||
>>> serialize(ET, e)
|
||||
'<tag />'
|
||||
"""
|
||||
|
||||
def test_main():
|
||||
from test import test_xml_etree_c
|
||||
from test import test_xml_etree, test_xml_etree_c
|
||||
|
||||
# Run the tests specific to the C implementation
|
||||
support.run_doctest(test_xml_etree_c, verbosity=True)
|
||||
|
||||
# Assign the C implementation before running the doctests
|
||||
# Patch the __name__, to prevent confusion with the pure Python test
|
||||
pyET = test_xml_etree.ET
|
||||
py__name__ = test_xml_etree.__name__
|
||||
test_xml_etree.ET = cET
|
||||
if __name__ != '__main__':
|
||||
test_xml_etree.__name__ = __name__
|
||||
try:
|
||||
# Run the same test suite as xml.etree.ElementTree
|
||||
test_xml_etree.test_main(module_name='xml.etree.cElementTree')
|
||||
finally:
|
||||
test_xml_etree.ET = pyET
|
||||
test_xml_etree.__name__ = py__name__
|
||||
|
||||
if __name__ == '__main__':
|
||||
test_main()
|
||||
|
|
|
|||
|
|
@ -0,0 +1,7 @@
|
|||
<?pi data?>
|
||||
<!-- comment -->
|
||||
<root xmlns='namespace'>
|
||||
<element key='value'>text</element>
|
||||
<element>text</element>tail
|
||||
<empty-element/>
|
||||
</root>
|
||||
|
|
@ -0,0 +1,6 @@
|
|||
<!-- comment -->
|
||||
<root>
|
||||
<element key='value'>text</element>
|
||||
<element>text</element>tail
|
||||
<empty-element/>
|
||||
</root>
|
||||
|
|
@ -1,6 +1,6 @@
|
|||
#
|
||||
# ElementTree
|
||||
# $Id: ElementInclude.py 1862 2004-06-18 07:31:02Z Fredrik $
|
||||
# $Id: ElementInclude.py 3375 2008-02-13 08:05:08Z fredrik $
|
||||
#
|
||||
# limited xinclude support for element trees
|
||||
#
|
||||
|
|
@ -16,7 +16,7 @@
|
|||
# --------------------------------------------------------------------
|
||||
# The ElementTree toolkit is
|
||||
#
|
||||
# Copyright (c) 1999-2004 by Fredrik Lundh
|
||||
# Copyright (c) 1999-2008 by Fredrik Lundh
|
||||
#
|
||||
# By obtaining, using, and/or copying this software and/or its
|
||||
# associated documentation, you agree that you have read, understood,
|
||||
|
|
@ -42,7 +42,7 @@
|
|||
# --------------------------------------------------------------------
|
||||
|
||||
# Licensed to PSF under a Contributor Agreement.
|
||||
# See http://www.python.org/2.4/license for licensing details.
|
||||
# See http://www.python.org/psf/license for licensing details.
|
||||
|
||||
##
|
||||
# Limited XInclude support for the ElementTree package.
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
#
|
||||
# ElementTree
|
||||
# $Id: ElementPath.py 1858 2004-06-17 21:31:41Z Fredrik $
|
||||
# $Id: ElementPath.py 3375 2008-02-13 08:05:08Z fredrik $
|
||||
#
|
||||
# limited xpath support for element trees
|
||||
#
|
||||
|
|
@ -8,8 +8,13 @@
|
|||
# 2003-05-23 fl created
|
||||
# 2003-05-28 fl added support for // etc
|
||||
# 2003-08-27 fl fixed parsing of periods in element names
|
||||
# 2007-09-10 fl new selection engine
|
||||
# 2007-09-12 fl fixed parent selector
|
||||
# 2007-09-13 fl added iterfind; changed findall to return a list
|
||||
# 2007-11-30 fl added namespaces support
|
||||
# 2009-10-30 fl added child element value filter
|
||||
#
|
||||
# Copyright (c) 2003-2004 by Fredrik Lundh. All rights reserved.
|
||||
# Copyright (c) 2003-2009 by Fredrik Lundh. All rights reserved.
|
||||
#
|
||||
# fredrik@pythonware.com
|
||||
# http://www.pythonware.com
|
||||
|
|
@ -17,7 +22,7 @@
|
|||
# --------------------------------------------------------------------
|
||||
# The ElementTree toolkit is
|
||||
#
|
||||
# Copyright (c) 1999-2004 by Fredrik Lundh
|
||||
# Copyright (c) 1999-2009 by Fredrik Lundh
|
||||
#
|
||||
# By obtaining, using, and/or copying this software and/or its
|
||||
# associated documentation, you agree that you have read, understood,
|
||||
|
|
@ -43,7 +48,7 @@
|
|||
# --------------------------------------------------------------------
|
||||
|
||||
# Licensed to PSF under a Contributor Agreement.
|
||||
# See http://www.python.org/2.4/license for licensing details.
|
||||
# See http://www.python.org/psf/license for licensing details.
|
||||
|
||||
##
|
||||
# Implementation module for XPath support. There's usually no reason
|
||||
|
|
@ -53,146 +58,246 @@
|
|||
|
||||
import re
|
||||
|
||||
xpath_tokenizer = re.compile(
|
||||
"(::|\.\.|\(\)|[/.*:\[\]\(\)@=])|((?:\{[^}]+\})?[^/:\[\]\(\)@=\s]+)|\s+"
|
||||
).findall
|
||||
xpath_tokenizer_re = re.compile(
|
||||
"("
|
||||
"'[^']*'|\"[^\"]*\"|"
|
||||
"::|"
|
||||
"//?|"
|
||||
"\.\.|"
|
||||
"\(\)|"
|
||||
"[/.*:\[\]\(\)@=])|"
|
||||
"((?:\{[^}]+\})?[^/\[\]\(\)@=\s]+)|"
|
||||
"\s+"
|
||||
)
|
||||
|
||||
class xpath_descendant_or_self:
|
||||
pass
|
||||
|
||||
##
|
||||
# Wrapper for a compiled XPath.
|
||||
|
||||
class Path:
|
||||
|
||||
##
|
||||
# Create an Path instance from an XPath expression.
|
||||
|
||||
def __init__(self, path):
|
||||
tokens = xpath_tokenizer(path)
|
||||
# the current version supports 'path/path'-style expressions only
|
||||
self.path = []
|
||||
self.tag = None
|
||||
if tokens and tokens[0][0] == "/":
|
||||
raise SyntaxError("cannot use absolute path on element")
|
||||
while tokens:
|
||||
op, tag = tokens.pop(0)
|
||||
if tag or op == "*":
|
||||
self.path.append(tag or op)
|
||||
elif op == ".":
|
||||
pass
|
||||
elif op == "/":
|
||||
self.path.append(xpath_descendant_or_self())
|
||||
continue
|
||||
else:
|
||||
raise SyntaxError("unsupported path syntax (%s)" % op)
|
||||
if tokens:
|
||||
op, tag = tokens.pop(0)
|
||||
if op != "/":
|
||||
raise SyntaxError(
|
||||
"expected path separator (%s)" % (op or tag)
|
||||
)
|
||||
if self.path and isinstance(self.path[-1], xpath_descendant_or_self):
|
||||
raise SyntaxError("path cannot end with //")
|
||||
if len(self.path) == 1 and isinstance(self.path[0], type("")):
|
||||
self.tag = self.path[0]
|
||||
|
||||
##
|
||||
# Find first matching object.
|
||||
|
||||
def find(self, element):
|
||||
tag = self.tag
|
||||
if tag is None:
|
||||
nodeset = self.findall(element)
|
||||
if not nodeset:
|
||||
return None
|
||||
return nodeset[0]
|
||||
for elem in element:
|
||||
if elem.tag == tag:
|
||||
return elem
|
||||
return None
|
||||
|
||||
##
|
||||
# Find text for first matching object.
|
||||
|
||||
def findtext(self, element, default=None):
|
||||
tag = self.tag
|
||||
if tag is None:
|
||||
nodeset = self.findall(element)
|
||||
if not nodeset:
|
||||
return default
|
||||
return nodeset[0].text or ""
|
||||
for elem in element:
|
||||
if elem.tag == tag:
|
||||
return elem.text or ""
|
||||
return default
|
||||
|
||||
##
|
||||
# Find all matching objects.
|
||||
|
||||
def findall(self, element):
|
||||
nodeset = [element]
|
||||
index = 0
|
||||
while 1:
|
||||
def xpath_tokenizer(pattern, namespaces=None):
|
||||
for token in xpath_tokenizer_re.findall(pattern):
|
||||
tag = token[1]
|
||||
if tag and tag[0] != "{" and ":" in tag:
|
||||
try:
|
||||
path = self.path[index]
|
||||
index = index + 1
|
||||
except IndexError:
|
||||
return nodeset
|
||||
set = []
|
||||
if isinstance(path, xpath_descendant_or_self):
|
||||
prefix, uri = tag.split(":", 1)
|
||||
if not namespaces:
|
||||
raise KeyError
|
||||
yield token[0], "{%s}%s" % (namespaces[prefix], uri)
|
||||
except KeyError:
|
||||
raise SyntaxError("prefix %r not found in prefix map" % prefix)
|
||||
else:
|
||||
yield token
|
||||
|
||||
def get_parent_map(context):
|
||||
parent_map = context.parent_map
|
||||
if parent_map is None:
|
||||
context.parent_map = parent_map = {}
|
||||
for p in context.root.iter():
|
||||
for e in p:
|
||||
parent_map[e] = p
|
||||
return parent_map
|
||||
|
||||
def prepare_child(next, token):
|
||||
tag = token[1]
|
||||
def select(context, result):
|
||||
for elem in result:
|
||||
for e in elem:
|
||||
if e.tag == tag:
|
||||
yield e
|
||||
return select
|
||||
|
||||
def prepare_star(next, token):
|
||||
def select(context, result):
|
||||
for elem in result:
|
||||
for e in elem:
|
||||
yield e
|
||||
return select
|
||||
|
||||
def prepare_self(next, token):
|
||||
def select(context, result):
|
||||
for elem in result:
|
||||
yield elem
|
||||
return select
|
||||
|
||||
def prepare_descendant(next, token):
|
||||
token = next()
|
||||
if token[0] == "*":
|
||||
tag = "*"
|
||||
elif not token[0]:
|
||||
tag = token[1]
|
||||
else:
|
||||
raise SyntaxError("invalid descendant")
|
||||
def select(context, result):
|
||||
for elem in result:
|
||||
for e in elem.iter(tag):
|
||||
if e is not elem:
|
||||
yield e
|
||||
return select
|
||||
|
||||
def prepare_parent(next, token):
|
||||
def select(context, result):
|
||||
# FIXME: raise error if .. is applied at toplevel?
|
||||
parent_map = get_parent_map(context)
|
||||
result_map = {}
|
||||
for elem in result:
|
||||
if elem in parent_map:
|
||||
parent = parent_map[elem]
|
||||
if parent not in result_map:
|
||||
result_map[parent] = None
|
||||
yield parent
|
||||
return select
|
||||
|
||||
def prepare_predicate(next, token):
|
||||
# FIXME: replace with real parser!!! refs:
|
||||
# http://effbot.org/zone/simple-iterator-parser.htm
|
||||
# http://javascript.crockford.com/tdop/tdop.html
|
||||
signature = []
|
||||
predicate = []
|
||||
while 1:
|
||||
token = next()
|
||||
if token[0] == "]":
|
||||
break
|
||||
if token[0] and token[0][:1] in "'\"":
|
||||
token = "'", token[0][1:-1]
|
||||
signature.append(token[0] or "-")
|
||||
predicate.append(token[1])
|
||||
signature = "".join(signature)
|
||||
# use signature to determine predicate type
|
||||
if signature == "@-":
|
||||
# [@attribute] predicate
|
||||
key = predicate[1]
|
||||
def select(context, result):
|
||||
for elem in result:
|
||||
if elem.get(key) is not None:
|
||||
yield elem
|
||||
return select
|
||||
if signature == "@-='":
|
||||
# [@attribute='value']
|
||||
key = predicate[1]
|
||||
value = predicate[-1]
|
||||
def select(context, result):
|
||||
for elem in result:
|
||||
if elem.get(key) == value:
|
||||
yield elem
|
||||
return select
|
||||
if signature == "-" and not re.match("\d+$", predicate[0]):
|
||||
# [tag]
|
||||
tag = predicate[0]
|
||||
def select(context, result):
|
||||
for elem in result:
|
||||
if elem.find(tag) is not None:
|
||||
yield elem
|
||||
return select
|
||||
if signature == "-='" and not re.match("\d+$", predicate[0]):
|
||||
# [tag='value']
|
||||
tag = predicate[0]
|
||||
value = predicate[-1]
|
||||
def select(context, result):
|
||||
for elem in result:
|
||||
for e in elem.findall(tag):
|
||||
if "".join(e.itertext()) == value:
|
||||
yield elem
|
||||
break
|
||||
return select
|
||||
if signature == "-" or signature == "-()" or signature == "-()-":
|
||||
# [index] or [last()] or [last()-index]
|
||||
if signature == "-":
|
||||
index = int(predicate[0]) - 1
|
||||
else:
|
||||
if predicate[0] != "last":
|
||||
raise SyntaxError("unsupported function")
|
||||
if signature == "-()-":
|
||||
try:
|
||||
tag = self.path[index]
|
||||
if not isinstance(tag, type("")):
|
||||
tag = None
|
||||
else:
|
||||
index = index + 1
|
||||
except IndexError:
|
||||
tag = None # invalid path
|
||||
for node in nodeset:
|
||||
new = list(node.getiterator(tag))
|
||||
if new and new[0] is node:
|
||||
set.extend(new[1:])
|
||||
else:
|
||||
set.extend(new)
|
||||
index = int(predicate[2]) - 1
|
||||
except ValueError:
|
||||
raise SyntaxError("unsupported expression")
|
||||
else:
|
||||
for node in nodeset:
|
||||
for node in node:
|
||||
if path == "*" or node.tag == path:
|
||||
set.append(node)
|
||||
if not set:
|
||||
return []
|
||||
nodeset = set
|
||||
index = -1
|
||||
def select(context, result):
|
||||
parent_map = get_parent_map(context)
|
||||
for elem in result:
|
||||
try:
|
||||
parent = parent_map[elem]
|
||||
# FIXME: what if the selector is "*" ?
|
||||
elems = list(parent.findall(elem.tag))
|
||||
if elems[index] is elem:
|
||||
yield elem
|
||||
except (IndexError, KeyError):
|
||||
pass
|
||||
return select
|
||||
raise SyntaxError("invalid predicate")
|
||||
|
||||
ops = {
|
||||
"": prepare_child,
|
||||
"*": prepare_star,
|
||||
".": prepare_self,
|
||||
"..": prepare_parent,
|
||||
"//": prepare_descendant,
|
||||
"[": prepare_predicate,
|
||||
}
|
||||
|
||||
_cache = {}
|
||||
|
||||
##
|
||||
# (Internal) Compile path.
|
||||
class _SelectorContext:
|
||||
parent_map = None
|
||||
def __init__(self, root):
|
||||
self.root = root
|
||||
|
||||
def _compile(path):
|
||||
p = _cache.get(path)
|
||||
if p is not None:
|
||||
return p
|
||||
p = Path(path)
|
||||
if len(_cache) >= 100:
|
||||
_cache.clear()
|
||||
_cache[path] = p
|
||||
return p
|
||||
# --------------------------------------------------------------------
|
||||
|
||||
##
|
||||
# Generate all matching objects.
|
||||
|
||||
def iterfind(elem, path, namespaces=None):
|
||||
# compile selector pattern
|
||||
if path[-1:] == "/":
|
||||
path = path + "*" # implicit all (FIXME: keep this?)
|
||||
try:
|
||||
selector = _cache[path]
|
||||
except KeyError:
|
||||
if len(_cache) > 100:
|
||||
_cache.clear()
|
||||
if path[:1] == "/":
|
||||
raise SyntaxError("cannot use absolute path on element")
|
||||
next = iter(xpath_tokenizer(path, namespaces)).__next__
|
||||
token = next()
|
||||
selector = []
|
||||
while 1:
|
||||
try:
|
||||
selector.append(ops[token[0]](next, token))
|
||||
except StopIteration:
|
||||
raise SyntaxError("invalid path")
|
||||
try:
|
||||
token = next()
|
||||
if token[0] == "/":
|
||||
token = next()
|
||||
except StopIteration:
|
||||
break
|
||||
_cache[path] = selector
|
||||
# execute selector pattern
|
||||
result = [elem]
|
||||
context = _SelectorContext(elem)
|
||||
for select in selector:
|
||||
result = select(context, result)
|
||||
return result
|
||||
|
||||
##
|
||||
# Find first matching object.
|
||||
|
||||
def find(element, path):
|
||||
return _compile(path).find(element)
|
||||
|
||||
##
|
||||
# Find text for first matching object.
|
||||
|
||||
def findtext(element, path, default=None):
|
||||
return _compile(path).findtext(element, default)
|
||||
def find(elem, path, namespaces=None):
|
||||
try:
|
||||
return next(iterfind(elem, path, namespaces))
|
||||
except StopIteration:
|
||||
return None
|
||||
|
||||
##
|
||||
# Find all matching objects.
|
||||
|
||||
def findall(element, path):
|
||||
return _compile(path).findall(element)
|
||||
def findall(elem, path, namespaces=None):
|
||||
return list(iterfind(elem, path, namespaces))
|
||||
|
||||
##
|
||||
# Find text for first matching object.
|
||||
|
||||
def findtext(elem, path, default=None, namespaces=None):
|
||||
try:
|
||||
elem = next(iterfind(elem, path, namespaces))
|
||||
return elem.text or ""
|
||||
except StopIteration:
|
||||
return default
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
|
|
@ -1,10 +1,10 @@
|
|||
# $Id: __init__.py 1821 2004-06-03 16:57:49Z fredrik $
|
||||
# $Id: __init__.py 3375 2008-02-13 08:05:08Z fredrik $
|
||||
# elementtree package
|
||||
|
||||
# --------------------------------------------------------------------
|
||||
# The ElementTree toolkit is
|
||||
#
|
||||
# Copyright (c) 1999-2004 by Fredrik Lundh
|
||||
# Copyright (c) 1999-2008 by Fredrik Lundh
|
||||
#
|
||||
# By obtaining, using, and/or copying this software and/or its
|
||||
# associated documentation, you agree that you have read, understood,
|
||||
|
|
@ -30,4 +30,4 @@
|
|||
# --------------------------------------------------------------------
|
||||
|
||||
# Licensed to PSF under a Contributor Agreement.
|
||||
# See http://www.python.org/2.4/license for licensing details.
|
||||
# See http://www.python.org/psf/license for licensing details.
|
||||
|
|
|
|||
|
|
@ -836,7 +836,7 @@ EXTRAPLATDIR= @EXTRAPLATDIR@
|
|||
MACHDEPS= $(PLATDIR) $(EXTRAPLATDIR)
|
||||
XMLLIBSUBDIRS= xml xml/dom xml/etree xml/parsers xml/sax
|
||||
LIBSUBDIRS= tkinter site-packages test test/output test/data \
|
||||
test/decimaltestdata \
|
||||
test/decimaltestdata test/xmltestdata \
|
||||
encodings \
|
||||
email email/mime email/test email/test/data \
|
||||
html json json/tests http dbm xmlrpc \
|
||||
|
|
|
|||
|
|
@ -283,6 +283,9 @@ C-API
|
|||
Library
|
||||
-------
|
||||
|
||||
- Issue #6472: The xml.etree package is updated to ElementTree 1.3. The
|
||||
cElementTree module is updated too.
|
||||
|
||||
- Issue #7774: Set sys.executable to an empty string if argv[0] has been set to
|
||||
an non existent program name and Python is unable to retrieve the real
|
||||
program name
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
|
|
@ -1006,8 +1006,6 @@ def add_files(db):
|
|||
lib.add_file("audiotest.au")
|
||||
lib.add_file("cfgparser.1")
|
||||
lib.add_file("sgml_input.html")
|
||||
lib.add_file("test.xml")
|
||||
lib.add_file("test.xml.out")
|
||||
lib.add_file("testtar.tar")
|
||||
lib.add_file("test_difflib_expect.html")
|
||||
lib.add_file("check_soundcard.vbs")
|
||||
|
|
@ -1019,6 +1017,9 @@ def add_files(db):
|
|||
lib.add_file("zipdir.zip")
|
||||
if dir=='decimaltestdata':
|
||||
lib.glob("*.decTest")
|
||||
if dir=='xmltestdata':
|
||||
lib.glob("*.xml")
|
||||
lib.add_file("test.xml.out")
|
||||
if dir=='output':
|
||||
lib.glob("test_*")
|
||||
if dir=='idlelib':
|
||||
|
|
|
|||
Loading…
Reference in New Issue