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1 | 1 | # Wrapper module for _elementtree |
2 | 2 |
|
| 3 | +from xml.etree.ElementTree import (ElementTree, dump, iselement, QName, |
| 4 | + fromstringlist, |
| 5 | + tostring, tostringlist, VERSION) |
| 6 | +# These ones are not in ElementTree.__all__ |
| 7 | +from xml.etree.ElementTree import ElementPath, register_namespace |
| 8 | + |
| 9 | +# Import the C accelerators: |
| 10 | +# Element, SubElement, TreeBuilder, XMLParser, ParseError |
3 | 11 | from _elementtree import * |
| 12 | + |
| 13 | + |
| 14 | +class ElementTree(ElementTree): |
| 15 | + |
| 16 | + def parse(self, source, parser=None): |
| 17 | + close_source = False |
| 18 | + if not hasattr(source, 'read'): |
| 19 | + source = open(source, 'rb') |
| 20 | + close_source = True |
| 21 | + try: |
| 22 | + if parser is not None: |
| 23 | + while True: |
| 24 | + data = source.read(65536) |
| 25 | + if not data: |
| 26 | + break |
| 27 | + parser.feed(data) |
| 28 | + self._root = parser.close() |
| 29 | + else: |
| 30 | + parser = XMLParser() |
| 31 | + self._root = parser._parse(source) |
| 32 | + return self._root |
| 33 | + finally: |
| 34 | + if close_source: |
| 35 | + source.close() |
| 36 | + |
| 37 | + |
| 38 | +class iterparse: |
| 39 | + root = None |
| 40 | + |
| 41 | + def __init__(self, file, events=None): |
| 42 | + self._close_file = False |
| 43 | + if not hasattr(file, 'read'): |
| 44 | + file = open(file, 'rb') |
| 45 | + self._close_file = True |
| 46 | + self._file = file |
| 47 | + self._events = [] |
| 48 | + self._index = 0 |
| 49 | + self._error = None |
| 50 | + self.root = self._root = None |
| 51 | + b = TreeBuilder() |
| 52 | + self._parser = XMLParser(b) |
| 53 | + self._parser._setevents(self._events, events) |
| 54 | + |
| 55 | + def __next__(self): |
| 56 | + while True: |
| 57 | + try: |
| 58 | + item = self._events[self._index] |
| 59 | + self._index += 1 |
| 60 | + return item |
| 61 | + except IndexError: |
| 62 | + pass |
| 63 | + if self._error: |
| 64 | + e = self._error |
| 65 | + self._error = None |
| 66 | + raise e |
| 67 | + if self._parser is None: |
| 68 | + self.root = self._root |
| 69 | + if self._close_file: |
| 70 | + self._file.close() |
| 71 | + raise StopIteration |
| 72 | + # load event buffer |
| 73 | + del self._events[:] |
| 74 | + self._index = 0 |
| 75 | + data = self._file.read(16384) |
| 76 | + if data: |
| 77 | + try: |
| 78 | + self._parser.feed(data) |
| 79 | + except SyntaxError as exc: |
| 80 | + self._error = exc |
| 81 | + else: |
| 82 | + self._root = self._parser.close() |
| 83 | + self._parser = None |
| 84 | + |
| 85 | + def __iter__(self): |
| 86 | + return self |
| 87 | + |
| 88 | + |
| 89 | +# ============================================================================= |
| 90 | +# |
| 91 | +# Everything below this line can be removed |
| 92 | +# after cElementTree is folded behind ElementTree. |
| 93 | +# |
| 94 | +# ============================================================================= |
| 95 | + |
| 96 | +from xml.etree.ElementTree import Comment as _Comment, PI as _PI |
| 97 | + |
| 98 | + |
| 99 | +def parse(source, parser=None): |
| 100 | + tree = ElementTree() |
| 101 | + tree.parse(source, parser) |
| 102 | + return tree |
| 103 | + |
| 104 | + |
| 105 | +def XML(text, parser=None): |
| 106 | + if not parser: |
| 107 | + parser = XMLParser() |
| 108 | + parser = XMLParser() |
| 109 | + parser.feed(text) |
| 110 | + return parser.close() |
| 111 | + |
| 112 | + |
| 113 | +def XMLID(text, parser=None): |
| 114 | + tree = XML(text, parser=parser) |
| 115 | + ids = {} |
| 116 | + for elem in tree.iter(): |
| 117 | + id = elem.get('id') |
| 118 | + if id: |
| 119 | + ids[id] = elem |
| 120 | + return tree, ids |
| 121 | + |
| 122 | + |
| 123 | +class CommentProxy: |
| 124 | + |
| 125 | + def __call__(self, text=None): |
| 126 | + element = Element(_Comment) |
| 127 | + element.text = text |
| 128 | + return element |
| 129 | + |
| 130 | + def __eq__(self, other): |
| 131 | + return _Comment == other |
| 132 | + |
| 133 | + |
| 134 | +class PIProxy: |
| 135 | + |
| 136 | + def __call__(self, target, text=None): |
| 137 | + element = Element(_PI) |
| 138 | + element.text = target |
| 139 | + if text: |
| 140 | + element.text = element.text + ' ' + text |
| 141 | + return element |
| 142 | + |
| 143 | + def __eq__(self, other): |
| 144 | + return _PI == other |
| 145 | + |
| 146 | + |
| 147 | +Comment = CommentProxy() |
| 148 | +PI = ProcessingInstruction = PIProxy() |
| 149 | +del CommentProxy, PIProxy |
| 150 | + |
| 151 | +# Aliases |
| 152 | +fromstring = XML |
| 153 | +XMLTreeBuilder = XMLParser |
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