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File Content: `ElementInclude.py`

#
# ElementTree
# $Id: ElementInclude.py 3375 2008-02-13 08:05:08Z fredrik $
#
# limited xinclude support for element trees
#
# history:
# 2003-08-15 fl   created
# 2003-11-14 fl   fixed default loader
#
# Copyright (c) 2003-2004 by Fredrik Lundh.  All rights reserved.
#
# fredrik@pythonware.com
# http://www.pythonware.com
#
# --------------------------------------------------------------------
# The ElementTree toolkit is
#
# 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,
# and will comply with the following terms and conditions:
#
# Permission to use, copy, modify, and distribute this software and
# its associated documentation for any purpose and without fee is
# hereby granted, provided that the above copyright notice appears in
# all copies, and that both that copyright notice and this permission
# notice appear in supporting documentation, and that the name of
# Secret Labs AB or the author not be used in advertising or publicity
# pertaining to distribution of the software without specific, written
# prior permission.
#
# SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
# TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT-
# ABILITY AND FITNESS.  IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR
# BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
# OF THIS SOFTWARE.
# --------------------------------------------------------------------

# Licensed to PSF under a Contributor Agreement.
# See http://www.python.org/psf/license for licensing details.

##
# Limited XInclude support for the ElementTree package.
##

import copy
from . import ElementTree

XINCLUDE = "{http://www.w3.org/2001/XInclude}"

XINCLUDE_INCLUDE = XINCLUDE + "include"
XINCLUDE_FALLBACK = XINCLUDE + "fallback"

##
# Fatal include error.

class FatalIncludeError(SyntaxError):
    pass

##
# Default loader.  This loader reads an included resource from disk.
#
# @param href Resource reference.
# @param parse Parse mode.  Either "xml" or "text".
# @param encoding Optional text encoding.
# @return The expanded resource.  If the parse mode is "xml", this
#    is an ElementTree instance.  If the parse mode is "text", this
#    is a Unicode string.  If the loader fails, it can return None
#    or raise an IOError exception.
# @throws IOError If the loader fails to load the resource.

def default_loader(href, parse, encoding=None):
    file = open(href)
    if parse == "xml":
        data = ElementTree.parse(file).getroot()
    else:
        data = file.read()
        if encoding:
            data = data.decode(encoding)
    file.close()
    return data

##
# Expand XInclude directives.
#
# @param elem Root element.
# @param loader Optional resource loader.  If omitted, it defaults
#     to {@link default_loader}.  If given, it should be a callable
#     that implements the same interface as <b>default_loader</b>.
# @throws FatalIncludeError If the function fails to include a given
#     resource, or if the tree contains malformed XInclude elements.
# @throws IOError If the function fails to load a given resource.

def include(elem, loader=None):
    if loader is None:
        loader = default_loader
    # look for xinclude elements
    i = 0
    while i < len(elem):
        e = elem[i]
        if e.tag == XINCLUDE_INCLUDE:
            # process xinclude directive
            href = e.get("href")
            parse = e.get("parse", "xml")
            if parse == "xml":
                node = loader(href, parse)
                if node is None:
                    raise FatalIncludeError(
                        "cannot load %r as %r" % (href, parse)
                        )
                node = copy.copy(node)
                if e.tail:
                    node.tail = (node.tail or "") + e.tail
                elem[i] = node
            elif parse == "text":
                text = loader(href, parse, e.get("encoding"))
                if text is None:
                    raise FatalIncludeError(
                        "cannot load %r as %r" % (href, parse)
                        )
                if i:
                    node = elem[i-1]
                    node.tail = (node.tail or "") + text + (e.tail or "")
                else:
                    elem.text = (elem.text or "") + text + (e.tail or "")
                del elem[i]
                continue
            else:
                raise FatalIncludeError(
                    "unknown parse type in xi:include tag (%r)" % parse
                )
        elif e.tag == XINCLUDE_FALLBACK:
            raise FatalIncludeError(
                "xi:fallback tag must be child of xi:include (%r)" % e.tag
                )
        else:
            include(e, loader)
        i = i + 1
Name	Size	Permission
ElementInclude.py	5062 bytes	0644
ElementInclude.pyc	1980 bytes	0644
ElementInclude.pyo	1980 bytes	0644
ElementPath.py	9475 bytes	0644
ElementPath.pyc	7616 bytes	0644
ElementPath.pyo	7616 bytes	0644
ElementTree.py	56502 bytes	0644
ElementTree.pyc	34903 bytes	0644
ElementTree.pyo	34524 bytes	0644
__init__.py	1604 bytes	0644
__init__.pyc	129 bytes	0644
__init__.pyo	129 bytes	0644
cElementTree.py	62 bytes	0644
cElementTree.pyc	176 bytes	0644
cElementTree.pyo	176 bytes	0644
File Content: ElementInclude.py

File Content: `ElementInclude.py`
