Mercurial > cpython-lru_cache-weakref
annotate Lib/xml/etree/ElementInclude.py @ 80661:94de77bd0b4b 2.7
Issue #16194: document imp.load_dynamic problems
when read several extension modules from the same binary object file.
| author | Andrew Svetlov <andrew.svetlov@gmail.com> |
|---|---|
| date | Thu, 29 Nov 2012 19:51:28 +0200 |
| parents | c2e1db30f756 |
| children |
| rev | line source |
|---|---|
| 39275 | 1 # |
| 2 # ElementTree | |
|
59511
831e30c0fd73
Issue #6472: The xml.etree package is updated to ElementTree 1.3. The cElementTree module is updated too.
Florent Xicluna <florent.xicluna@gmail.com>
parents:
39275
diff
changeset
|
3 # $Id: ElementInclude.py 3375 2008-02-13 08:05:08Z fredrik $ |
| 39275 | 4 # |
| 5 # limited xinclude support for element trees | |
| 6 # | |
| 7 # history: | |
| 8 # 2003-08-15 fl created | |
| 9 # 2003-11-14 fl fixed default loader | |
| 10 # | |
| 11 # Copyright (c) 2003-2004 by Fredrik Lundh. All rights reserved. | |
| 12 # | |
| 13 # fredrik@pythonware.com | |
| 14 # http://www.pythonware.com | |
| 15 # | |
| 16 # -------------------------------------------------------------------- | |
| 17 # The ElementTree toolkit is | |
| 18 # | |
|
59511
831e30c0fd73
Issue #6472: The xml.etree package is updated to ElementTree 1.3. The cElementTree module is updated too.
Florent Xicluna <florent.xicluna@gmail.com>
parents:
39275
diff
changeset
|
19 # Copyright (c) 1999-2008 by Fredrik Lundh |
| 39275 | 20 # |
| 21 # By obtaining, using, and/or copying this software and/or its | |
| 22 # associated documentation, you agree that you have read, understood, | |
| 23 # and will comply with the following terms and conditions: | |
| 24 # | |
| 25 # Permission to use, copy, modify, and distribute this software and | |
| 26 # its associated documentation for any purpose and without fee is | |
| 27 # hereby granted, provided that the above copyright notice appears in | |
| 28 # all copies, and that both that copyright notice and this permission | |
| 29 # notice appear in supporting documentation, and that the name of | |
| 30 # Secret Labs AB or the author not be used in advertising or publicity | |
| 31 # pertaining to distribution of the software without specific, written | |
| 32 # prior permission. | |
| 33 # | |
| 34 # SECRET LABS AB AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD | |
| 35 # TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANT- | |
| 36 # ABILITY AND FITNESS. IN NO EVENT SHALL SECRET LABS AB OR THE AUTHOR | |
| 37 # BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY | |
| 38 # DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, | |
| 39 # WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS | |
| 40 # ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE | |
| 41 # OF THIS SOFTWARE. | |
| 42 # -------------------------------------------------------------------- | |
| 43 | |
| 44 # Licensed to PSF under a Contributor Agreement. | |
|
59511
831e30c0fd73
Issue #6472: The xml.etree package is updated to ElementTree 1.3. The cElementTree module is updated too.
Florent Xicluna <florent.xicluna@gmail.com>
parents:
39275
diff
changeset
|
45 # See http://www.python.org/psf/license for licensing details. |
| 39275 | 46 |
| 47 ## | |
| 48 # Limited XInclude support for the ElementTree package. | |
| 49 ## | |
| 50 | |
| 51 import copy | |
|
59511
831e30c0fd73
Issue #6472: The xml.etree package is updated to ElementTree 1.3. The cElementTree module is updated too.
Florent Xicluna <florent.xicluna@gmail.com>
parents:
39275
diff
changeset
|
52 from . import ElementTree |
| 39275 | 53 |
| 54 XINCLUDE = "{http://www.w3.org/2001/XInclude}" | |
| 55 | |
| 56 XINCLUDE_INCLUDE = XINCLUDE + "include" | |
| 57 XINCLUDE_FALLBACK = XINCLUDE + "fallback" | |
| 58 | |
| 59 ## | |
| 60 # Fatal include error. | |
| 61 | |
| 62 class FatalIncludeError(SyntaxError): | |
| 63 pass | |
| 64 | |
| 65 ## | |
| 66 # Default loader. This loader reads an included resource from disk. | |
| 67 # | |
| 68 # @param href Resource reference. | |
| 69 # @param parse Parse mode. Either "xml" or "text". | |
| 70 # @param encoding Optional text encoding. | |
| 71 # @return The expanded resource. If the parse mode is "xml", this | |
| 72 # is an ElementTree instance. If the parse mode is "text", this | |
| 73 # is a Unicode string. If the loader fails, it can return None | |
| 74 # or raise an IOError exception. | |
| 75 # @throws IOError If the loader fails to load the resource. | |
| 76 | |
| 77 def default_loader(href, parse, encoding=None): | |
| 78 file = open(href) | |
| 79 if parse == "xml": | |
| 80 data = ElementTree.parse(file).getroot() | |
| 81 else: | |
| 82 data = file.read() | |
| 83 if encoding: | |
| 84 data = data.decode(encoding) | |
| 85 file.close() | |
| 86 return data | |
| 87 | |
| 88 ## | |
| 89 # Expand XInclude directives. | |
| 90 # | |
| 91 # @param elem Root element. | |
| 92 # @param loader Optional resource loader. If omitted, it defaults | |
| 93 # to {@link default_loader}. If given, it should be a callable | |
| 94 # that implements the same interface as <b>default_loader</b>. | |
| 95 # @throws FatalIncludeError If the function fails to include a given | |
| 96 # resource, or if the tree contains malformed XInclude elements. | |
| 97 # @throws IOError If the function fails to load a given resource. | |
| 98 | |
| 99 def include(elem, loader=None): | |
| 100 if loader is None: | |
| 101 loader = default_loader | |
| 102 # look for xinclude elements | |
| 103 i = 0 | |
| 104 while i < len(elem): | |
| 105 e = elem[i] | |
| 106 if e.tag == XINCLUDE_INCLUDE: | |
| 107 # process xinclude directive | |
| 108 href = e.get("href") | |
| 109 parse = e.get("parse", "xml") | |
| 110 if parse == "xml": | |
| 111 node = loader(href, parse) | |
| 112 if node is None: | |
| 113 raise FatalIncludeError( | |
| 114 "cannot load %r as %r" % (href, parse) | |
| 115 ) | |
| 116 node = copy.copy(node) | |
| 117 if e.tail: | |
| 118 node.tail = (node.tail or "") + e.tail | |
| 119 elem[i] = node | |
| 120 elif parse == "text": | |
| 121 text = loader(href, parse, e.get("encoding")) | |
| 122 if text is None: | |
| 123 raise FatalIncludeError( | |
| 124 "cannot load %r as %r" % (href, parse) | |
| 125 ) | |
| 126 if i: | |
| 127 node = elem[i-1] | |
|
63891
c2e1db30f756
Merged revisions 83864 via svnmerge from
Florent Xicluna <florent.xicluna@gmail.com>
parents:
59511
diff
changeset
|
128 node.tail = (node.tail or "") + text + (e.tail or "") |
| 39275 | 129 else: |
| 130 elem.text = (elem.text or "") + text + (e.tail or "") | |
| 131 del elem[i] | |
| 132 continue | |
| 133 else: | |
| 134 raise FatalIncludeError( | |
| 135 "unknown parse type in xi:include tag (%r)" % parse | |
| 136 ) | |
| 137 elif e.tag == XINCLUDE_FALLBACK: | |
| 138 raise FatalIncludeError( | |
| 139 "xi:fallback tag must be child of xi:include (%r)" % e.tag | |
| 140 ) | |
| 141 else: | |
| 142 include(e, loader) | |
| 143 i = i + 1 |