| 1 | import libxml2mod
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| 2 | import types
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| 3 | import sys
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| 4 |
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| 5 | # The root of all libxml2 errors.
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| 6 | class libxmlError(Exception): pass
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| 7 |
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| 8 | # Type of the wrapper class for the C objects wrappers
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| 9 | def checkWrapper(obj):
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| 10 | try:
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| 11 | n = type(_obj).__name__
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| 12 | if n != 'PyCObject' and n != 'PyCapsule':
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| 13 | return 1
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| 14 | except:
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| 15 | return 0
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| 16 | return 0
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| 17 |
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| 18 | #
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| 19 | # id() is sometimes negative ...
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| 20 | #
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| 21 | def pos_id(o):
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| 22 | i = id(o)
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| 23 | if (i < 0):
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| 24 | return (sys.maxsize - i)
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| 25 | return i
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| 26 |
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| 27 | #
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| 28 | # Errors raised by the wrappers when some tree handling failed.
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| 29 | #
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| 30 | class treeError(libxmlError):
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| 31 | def __init__(self, msg):
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| 32 | self.msg = msg
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| 33 | def __str__(self):
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| 34 | return self.msg
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| 35 |
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| 36 | class parserError(libxmlError):
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| 37 | def __init__(self, msg):
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| 38 | self.msg = msg
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| 39 | def __str__(self):
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| 40 | return self.msg
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| 41 |
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| 42 | class uriError(libxmlError):
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| 43 | def __init__(self, msg):
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| 44 | self.msg = msg
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| 45 | def __str__(self):
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| 46 | return self.msg
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| 47 |
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| 48 | class xpathError(libxmlError):
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| 49 | def __init__(self, msg):
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| 50 | self.msg = msg
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| 51 | def __str__(self):
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| 52 | return self.msg
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| 53 |
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| 54 | class ioWrapper:
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| 55 | def __init__(self, _obj):
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| 56 | self.__io = _obj
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| 57 | self._o = None
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| 58 |
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| 59 | def io_close(self):
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| 60 | if self.__io == None:
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| 61 | return(-1)
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| 62 | self.__io.close()
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| 63 | self.__io = None
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| 64 | return(0)
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| 65 |
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| 66 | def io_flush(self):
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| 67 | if self.__io == None:
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| 68 | return(-1)
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| 69 | self.__io.flush()
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| 70 | return(0)
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| 71 |
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| 72 | def io_read(self, len = -1):
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| 73 | if self.__io == None:
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| 74 | return(-1)
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| 75 | try:
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| 76 | if len < 0:
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| 77 | ret = self.__io.read()
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| 78 | else:
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| 79 | ret = self.__io.read(len)
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| 80 | except Exception:
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| 81 | import sys
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| 82 | e = sys.exc_info()[1]
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| 83 | print("failed to read from Python:", type(e))
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| 84 | print("on IO:", self.__io)
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| 85 | self.__io == None
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| 86 | return(-1)
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| 87 |
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| 88 | return(ret)
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| 89 |
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| 90 | def io_write(self, str, len = -1):
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| 91 | if self.__io == None:
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| 92 | return(-1)
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| 93 | if len < 0:
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| 94 | return(self.__io.write(str))
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| 95 | return(self.__io.write(str, len))
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| 96 |
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| 97 | class ioReadWrapper(ioWrapper):
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| 98 | def __init__(self, _obj, enc = ""):
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| 99 | ioWrapper.__init__(self, _obj)
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| 100 | self._o = libxml2mod.xmlCreateInputBuffer(self, enc)
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| 101 |
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| 102 | def __del__(self):
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| 103 | print("__del__")
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| 104 | self.io_close()
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| 105 | if self._o != None:
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| 106 | libxml2mod.xmlFreeParserInputBuffer(self._o)
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| 107 | self._o = None
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| 108 |
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| 109 | def close(self):
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| 110 | self.io_close()
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| 111 | if self._o != None:
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| 112 | libxml2mod.xmlFreeParserInputBuffer(self._o)
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| 113 | self._o = None
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| 114 |
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| 115 | class ioWriteWrapper(ioWrapper):
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| 116 | def __init__(self, _obj, enc = ""):
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| 117 | # print "ioWriteWrapper.__init__", _obj
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| 118 | if type(_obj) == type(''):
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| 119 | print("write io from a string")
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| 120 | self.o = None
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| 121 | elif type(_obj).__name__ == 'PyCapsule':
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| 122 | file = libxml2mod.outputBufferGetPythonFile(_obj)
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| 123 | if file != None:
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| 124 | ioWrapper.__init__(self, file)
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| 125 | else:
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| 126 | ioWrapper.__init__(self, _obj)
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| 127 | self._o = _obj
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| 128 | # elif type(_obj) == types.InstanceType:
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| 129 | # print(("write io from instance of %s" % (_obj.__class__)))
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| 130 | # ioWrapper.__init__(self, _obj)
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| 131 | # self._o = libxml2mod.xmlCreateOutputBuffer(self, enc)
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| 132 | else:
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| 133 | file = libxml2mod.outputBufferGetPythonFile(_obj)
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| 134 | if file != None:
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| 135 | ioWrapper.__init__(self, file)
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| 136 | else:
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| 137 | ioWrapper.__init__(self, _obj)
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| 138 | self._o = _obj
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| 139 |
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| 140 | def __del__(self):
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| 141 | # print "__del__"
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| 142 | self.io_close()
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| 143 | if self._o != None:
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| 144 | libxml2mod.xmlOutputBufferClose(self._o)
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| 145 | self._o = None
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| 146 |
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| 147 | def flush(self):
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| 148 | self.io_flush()
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| 149 | if self._o != None:
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| 150 | libxml2mod.xmlOutputBufferClose(self._o)
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| 151 | self._o = None
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| 152 |
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| 153 | def close(self):
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| 154 | self.io_flush()
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| 155 | if self._o != None:
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| 156 | libxml2mod.xmlOutputBufferClose(self._o)
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| 157 | self._o = None
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| 158 |
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| 159 | #
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| 160 | # Example of a class to handle SAX events
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| 161 | #
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| 162 | class SAXCallback:
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| 163 | """Base class for SAX handlers"""
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| 164 | def startDocument(self):
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| 165 | """called at the start of the document"""
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| 166 | pass
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| 167 |
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| 168 | def endDocument(self):
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| 169 | """called at the end of the document"""
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| 170 | pass
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| 171 |
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| 172 | def startElement(self, tag, attrs):
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| 173 | """called at the start of every element, tag is the name of
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| 174 | the element, attrs is a dictionary of the element's attributes"""
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| 175 | pass
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| 176 |
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| 177 | def endElement(self, tag):
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| 178 | """called at the start of every element, tag is the name of
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| 179 | the element"""
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| 180 | pass
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| 181 |
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| 182 | def characters(self, data):
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| 183 | """called when character data have been read, data is the string
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| 184 | containing the data, multiple consecutive characters() callback
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| 185 | are possible."""
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| 186 | pass
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| 187 |
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| 188 | def cdataBlock(self, data):
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| 189 | """called when CDATA section have been read, data is the string
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| 190 | containing the data, multiple consecutive cdataBlock() callback
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| 191 | are possible."""
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| 192 | pass
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| 193 |
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| 194 | def reference(self, name):
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| 195 | """called when an entity reference has been found"""
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| 196 | pass
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| 197 |
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| 198 | def ignorableWhitespace(self, data):
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| 199 | """called when potentially ignorable white spaces have been found"""
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| 200 | pass
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| 201 |
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| 202 | def processingInstruction(self, target, data):
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| 203 | """called when a PI has been found, target contains the PI name and
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| 204 | data is the associated data in the PI"""
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| 205 | pass
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| 206 |
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| 207 | def comment(self, content):
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| 208 | """called when a comment has been found, content contains the comment"""
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| 209 | pass
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| 210 |
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| 211 | def externalSubset(self, name, externalID, systemID):
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| 212 | """called when a DOCTYPE declaration has been found, name is the
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| 213 | DTD name and externalID, systemID are the DTD public and system
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| 214 | identifier for that DTd if available"""
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| 215 | pass
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| 216 |
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| 217 | def internalSubset(self, name, externalID, systemID):
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| 218 | """called when a DOCTYPE declaration has been found, name is the
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| 219 | DTD name and externalID, systemID are the DTD public and system
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| 220 | identifier for that DTD if available"""
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| 221 | pass
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| 222 |
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| 223 | def entityDecl(self, name, type, externalID, systemID, content):
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| 224 | """called when an ENTITY declaration has been found, name is the
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| 225 | entity name and externalID, systemID are the entity public and
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| 226 | system identifier for that entity if available, type indicates
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| 227 | the entity type, and content reports it's string content"""
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| 228 | pass
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| 229 |
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| 230 | def notationDecl(self, name, externalID, systemID):
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| 231 | """called when an NOTATION declaration has been found, name is the
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| 232 | notation name and externalID, systemID are the notation public and
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| 233 | system identifier for that notation if available"""
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| 234 | pass
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| 235 |
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| 236 | def attributeDecl(self, elem, name, type, defi, defaultValue, nameList):
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| 237 | """called when an ATTRIBUTE definition has been found"""
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| 238 | pass
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| 239 |
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| 240 | def elementDecl(self, name, type, content):
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| 241 | """called when an ELEMENT definition has been found"""
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| 242 | pass
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| 243 |
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| 244 | def entityDecl(self, name, publicId, systemID, notationName):
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| 245 | """called when an unparsed ENTITY declaration has been found,
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| 246 | name is the entity name and publicId,, systemID are the entity
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| 247 | public and system identifier for that entity if available,
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| 248 | and notationName indicate the associated NOTATION"""
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| 249 | pass
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| 250 |
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| 251 | def warning(self, msg):
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| 252 | #print msg
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| 253 | pass
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| 254 |
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| 255 | def error(self, msg):
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| 256 | raise parserError(msg)
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| 257 |
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| 258 | def fatalError(self, msg):
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| 259 | raise parserError(msg)
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| 260 |
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| 261 | #
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| 262 | # This class is the ancestor of all the Node classes. It provides
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| 263 | # the basic functionalities shared by all nodes (and handle
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| 264 | # gracefylly the exception), like name, navigation in the tree,
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| 265 | # doc reference, content access and serializing to a string or URI
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| 266 | #
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| 267 | class xmlCore:
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| 268 | def __init__(self, _obj=None):
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| 269 | if _obj != None:
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| 270 | self._o = _obj;
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| 271 | return
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| 272 | self._o = None
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| 273 |
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| 274 | def __eq__(self, other):
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| 275 | if other == None:
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| 276 | return False
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| 277 | ret = libxml2mod.compareNodesEqual(self._o, other._o)
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| 278 | if ret == None:
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| 279 | return False
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| 280 | return ret == True
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| 281 | def __ne__(self, other):
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| 282 | if other == None:
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| 283 | return True
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| 284 | ret = libxml2mod.compareNodesEqual(self._o, other._o)
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| 285 | return not ret
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| 286 | def __hash__(self):
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| 287 | ret = libxml2mod.nodeHash(self._o)
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| 288 | return ret
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| 289 |
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| 290 | def __str__(self):
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| 291 | return self.serialize()
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| 292 | def get_parent(self):
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| 293 | ret = libxml2mod.parent(self._o)
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| 294 | if ret == None:
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| 295 | return None
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| 296 | return nodeWrap(ret)
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| 297 | def get_children(self):
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| 298 | ret = libxml2mod.children(self._o)
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| 299 | if ret == None:
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| 300 | return None
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| 301 | return nodeWrap(ret)
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| 302 | def get_last(self):
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| 303 | ret = libxml2mod.last(self._o)
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| 304 | if ret == None:
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| 305 | return None
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| 306 | return nodeWrap(ret)
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| 307 | def get_next(self):
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| 308 | ret = libxml2mod.next(self._o)
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| 309 | if ret == None:
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| 310 | return None
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| 311 | return nodeWrap(ret)
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| 312 | def get_properties(self):
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| 313 | ret = libxml2mod.properties(self._o)
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| 314 | if ret == None:
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| 315 | return None
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| 316 | return xmlAttr(_obj=ret)
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| 317 | def get_prev(self):
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| 318 | ret = libxml2mod.prev(self._o)
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| 319 | if ret == None:
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| 320 | return None
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| 321 | return nodeWrap(ret)
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| 322 | def get_content(self):
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| 323 | return libxml2mod.xmlNodeGetContent(self._o)
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| 324 | getContent = get_content # why is this duplicate naming needed ?
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| 325 | def get_name(self):
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| 326 | return libxml2mod.name(self._o)
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| 327 | def get_type(self):
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| 328 | return libxml2mod.type(self._o)
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| 329 | def get_doc(self):
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| 330 | ret = libxml2mod.doc(self._o)
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| 331 | if ret == None:
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| 332 | if self.type in ["document_xml", "document_html"]:
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| 333 | return xmlDoc(_obj=self._o)
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| 334 | else:
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| 335 | return None
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| 336 | return xmlDoc(_obj=ret)
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| 337 | #
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| 338 | # Those are common attributes to nearly all type of nodes
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| 339 | # defined as python2 properties
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| 340 | #
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| 341 | import sys
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| 342 | if float(sys.version[0:3]) < 2.2:
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| 343 | def __getattr__(self, attr):
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| 344 | if attr == "parent":
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| 345 | ret = libxml2mod.parent(self._o)
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| 346 | if ret == None:
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| 347 | return None
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| 348 | return nodeWrap(ret)
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| 349 | elif attr == "properties":
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| 350 | ret = libxml2mod.properties(self._o)
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| 351 | if ret == None:
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| 352 | return None
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| 353 | return xmlAttr(_obj=ret)
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| 354 | elif attr == "children":
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| 355 | ret = libxml2mod.children(self._o)
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| 356 | if ret == None:
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| 357 | return None
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| 358 | return nodeWrap(ret)
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| 359 | elif attr == "last":
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| 360 | ret = libxml2mod.last(self._o)
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| 361 | if ret == None:
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| 362 | return None
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| 363 | return nodeWrap(ret)
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| 364 | elif attr == "next":
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| 365 | ret = libxml2mod.next(self._o)
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| 366 | if ret == None:
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| 367 | return None
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| 368 | return nodeWrap(ret)
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| 369 | elif attr == "prev":
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| 370 | ret = libxml2mod.prev(self._o)
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| 371 | if ret == None:
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| 372 | return None
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| 373 | return nodeWrap(ret)
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| 374 | elif attr == "content":
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| 375 | return libxml2mod.xmlNodeGetContent(self._o)
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| 376 | elif attr == "name":
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| 377 | return libxml2mod.name(self._o)
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| 378 | elif attr == "type":
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| 379 | return libxml2mod.type(self._o)
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| 380 | elif attr == "doc":
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| 381 | ret = libxml2mod.doc(self._o)
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| 382 | if ret == None:
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| 383 | if self.type == "document_xml" or self.type == "document_html":
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| 384 | return xmlDoc(_obj=self._o)
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| 385 | else:
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| 386 | return None
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| 387 | return xmlDoc(_obj=ret)
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| 388 | raise AttributeError(attr)
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| 389 | else:
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| 390 | parent = property(get_parent, None, None, "Parent node")
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| 391 | children = property(get_children, None, None, "First child node")
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| 392 | last = property(get_last, None, None, "Last sibling node")
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| 393 | next = property(get_next, None, None, "Next sibling node")
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| 394 | prev = property(get_prev, None, None, "Previous sibling node")
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| 395 | properties = property(get_properties, None, None, "List of properies")
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| 396 | content = property(get_content, None, None, "Content of this node")
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| 397 | name = property(get_name, None, None, "Node name")
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| 398 | type = property(get_type, None, None, "Node type")
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| 399 | doc = property(get_doc, None, None, "The document this node belongs to")
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| 400 |
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| 401 | #
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| 402 | # Serialization routines, the optional arguments have the following
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| 403 | # meaning:
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| 404 | # encoding: string to ask saving in a specific encoding
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| 405 | # indent: if 1 the serializer is asked to indent the output
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| 406 | #
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| 407 | def serialize(self, encoding = None, format = 0):
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| 408 | return libxml2mod.serializeNode(self._o, encoding, format)
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| 409 | def saveTo(self, file, encoding = None, format = 0):
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| 410 | return libxml2mod.saveNodeTo(self._o, file, encoding, format)
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| 411 |
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| 412 | #
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| 413 | # Canonicalization routines:
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| 414 | #
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| 415 | # nodes: the node set (tuple or list) to be included in the
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| 416 | # canonized image or None if all document nodes should be
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| 417 | # included.
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| 418 | # exclusive: the exclusive flag (0 - non-exclusive
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| 419 | # canonicalization; otherwise - exclusive canonicalization)
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| 420 | # prefixes: the list of inclusive namespace prefixes (strings),
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| 421 | # or None if there is no inclusive namespaces (only for
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| 422 | # exclusive canonicalization, ignored otherwise)
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| 423 | # with_comments: include comments in the result (!=0) or not
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| 424 | # (==0)
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| 425 | def c14nMemory(self,
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| 426 | nodes=None,
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| 427 | exclusive=0,
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| 428 | prefixes=None,
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| 429 | with_comments=0):
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| 430 | if nodes:
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| 431 | nodes = [n._o for n in nodes]
|
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| 432 | return libxml2mod.xmlC14NDocDumpMemory(
|
|---|
| 433 | self.get_doc()._o,
|
|---|
| 434 | nodes,
|
|---|
| 435 | exclusive != 0,
|
|---|
| 436 | prefixes,
|
|---|
| 437 | with_comments != 0)
|
|---|
| 438 | def c14nSaveTo(self,
|
|---|
| 439 | file,
|
|---|
| 440 | nodes=None,
|
|---|
| 441 | exclusive=0,
|
|---|
| 442 | prefixes=None,
|
|---|
| 443 | with_comments=0):
|
|---|
| 444 | if nodes:
|
|---|
| 445 | nodes = [n._o for n in nodes]
|
|---|
| 446 | return libxml2mod.xmlC14NDocSaveTo(
|
|---|
| 447 | self.get_doc()._o,
|
|---|
| 448 | nodes,
|
|---|
| 449 | exclusive != 0,
|
|---|
| 450 | prefixes,
|
|---|
| 451 | with_comments != 0,
|
|---|
| 452 | file)
|
|---|
| 453 |
|
|---|
| 454 | #
|
|---|
| 455 | # Selecting nodes using XPath, a bit slow because the context
|
|---|
| 456 | # is allocated/freed every time but convenient.
|
|---|
| 457 | #
|
|---|
| 458 | def xpathEval(self, expr):
|
|---|
| 459 | doc = self.doc
|
|---|
| 460 | if doc == None:
|
|---|
| 461 | return None
|
|---|
| 462 | ctxt = doc.xpathNewContext()
|
|---|
| 463 | ctxt.setContextNode(self)
|
|---|
| 464 | res = ctxt.xpathEval(expr)
|
|---|
| 465 | ctxt.xpathFreeContext()
|
|---|
| 466 | return res
|
|---|
| 467 |
|
|---|
| 468 | # #
|
|---|
| 469 | # # Selecting nodes using XPath, faster because the context
|
|---|
| 470 | # # is allocated just once per xmlDoc.
|
|---|
| 471 | # #
|
|---|
| 472 | # # Removed: DV memleaks c.f. #126735
|
|---|
| 473 | # #
|
|---|
| 474 | # def xpathEval2(self, expr):
|
|---|
| 475 | # doc = self.doc
|
|---|
| 476 | # if doc == None:
|
|---|
| 477 | # return None
|
|---|
| 478 | # try:
|
|---|
| 479 | # doc._ctxt.setContextNode(self)
|
|---|
| 480 | # except:
|
|---|
| 481 | # doc._ctxt = doc.xpathNewContext()
|
|---|
| 482 | # doc._ctxt.setContextNode(self)
|
|---|
| 483 | # res = doc._ctxt.xpathEval(expr)
|
|---|
| 484 | # return res
|
|---|
| 485 | def xpathEval2(self, expr):
|
|---|
| 486 | return self.xpathEval(expr)
|
|---|
| 487 |
|
|---|
| 488 | # Remove namespaces
|
|---|
| 489 | def removeNsDef(self, href):
|
|---|
| 490 | """
|
|---|
| 491 | Remove a namespace definition from a node. If href is None,
|
|---|
| 492 | remove all of the ns definitions on that node. The removed
|
|---|
| 493 | namespaces are returned as a linked list.
|
|---|
| 494 |
|
|---|
| 495 | Note: If any child nodes referred to the removed namespaces,
|
|---|
| 496 | they will be left with dangling links. You should call
|
|---|
| 497 | renconciliateNs() to fix those pointers.
|
|---|
| 498 |
|
|---|
| 499 | Note: This method does not free memory taken by the ns
|
|---|
| 500 | definitions. You will need to free it manually with the
|
|---|
| 501 | freeNsList() method on the returns xmlNs object.
|
|---|
| 502 | """
|
|---|
| 503 |
|
|---|
| 504 | ret = libxml2mod.xmlNodeRemoveNsDef(self._o, href)
|
|---|
| 505 | if ret is None:return None
|
|---|
| 506 | __tmp = xmlNs(_obj=ret)
|
|---|
| 507 | return __tmp
|
|---|
| 508 |
|
|---|
| 509 | # support for python2 iterators
|
|---|
| 510 | def walk_depth_first(self):
|
|---|
| 511 | return xmlCoreDepthFirstItertor(self)
|
|---|
| 512 | def walk_breadth_first(self):
|
|---|
| 513 | return xmlCoreBreadthFirstItertor(self)
|
|---|
| 514 | __iter__ = walk_depth_first
|
|---|
| 515 |
|
|---|
| 516 | def free(self):
|
|---|
| 517 | try:
|
|---|
| 518 | self.doc._ctxt.xpathFreeContext()
|
|---|
| 519 | except:
|
|---|
| 520 | pass
|
|---|
| 521 | libxml2mod.xmlFreeDoc(self._o)
|
|---|
| 522 |
|
|---|
| 523 |
|
|---|
| 524 | #
|
|---|
| 525 | # implements the depth-first iterator for libxml2 DOM tree
|
|---|
| 526 | #
|
|---|
| 527 | class xmlCoreDepthFirstItertor:
|
|---|
| 528 | def __init__(self, node):
|
|---|
| 529 | self.node = node
|
|---|
| 530 | self.parents = []
|
|---|
| 531 | def __iter__(self):
|
|---|
| 532 | return self
|
|---|
| 533 | def __next__(self):
|
|---|
| 534 | while 1:
|
|---|
| 535 | if self.node:
|
|---|
| 536 | ret = self.node
|
|---|
| 537 | self.parents.append(self.node)
|
|---|
| 538 | self.node = self.node.children
|
|---|
| 539 | return ret
|
|---|
| 540 | try:
|
|---|
| 541 | parent = self.parents.pop()
|
|---|
| 542 | except IndexError:
|
|---|
| 543 | raise StopIteration
|
|---|
| 544 | self.node = parent.next
|
|---|
| 545 | next = __next__
|
|---|
| 546 |
|
|---|
| 547 | #
|
|---|
| 548 | # implements the breadth-first iterator for libxml2 DOM tree
|
|---|
| 549 | #
|
|---|
| 550 | class xmlCoreBreadthFirstItertor:
|
|---|
| 551 | def __init__(self, node):
|
|---|
| 552 | self.node = node
|
|---|
| 553 | self.parents = []
|
|---|
| 554 | def __iter__(self):
|
|---|
| 555 | return self
|
|---|
| 556 | def __next__(self):
|
|---|
| 557 | while 1:
|
|---|
| 558 | if self.node:
|
|---|
| 559 | ret = self.node
|
|---|
| 560 | self.parents.append(self.node)
|
|---|
| 561 | self.node = self.node.next
|
|---|
| 562 | return ret
|
|---|
| 563 | try:
|
|---|
| 564 | parent = self.parents.pop()
|
|---|
| 565 | except IndexError:
|
|---|
| 566 | raise StopIteration
|
|---|
| 567 | self.node = parent.children
|
|---|
| 568 | next = __next__
|
|---|
| 569 |
|
|---|
| 570 | #
|
|---|
| 571 | # converters to present a nicer view of the XPath returns
|
|---|
| 572 | #
|
|---|
| 573 | def nodeWrap(o):
|
|---|
| 574 | # TODO try to cast to the most appropriate node class
|
|---|
| 575 | name = libxml2mod.type(o)
|
|---|
| 576 | if name == "element" or name == "text":
|
|---|
| 577 | return xmlNode(_obj=o)
|
|---|
| 578 | if name == "attribute":
|
|---|
| 579 | return xmlAttr(_obj=o)
|
|---|
| 580 | if name[0:8] == "document":
|
|---|
| 581 | return xmlDoc(_obj=o)
|
|---|
| 582 | if name == "namespace":
|
|---|
| 583 | return xmlNs(_obj=o)
|
|---|
| 584 | if name == "elem_decl":
|
|---|
| 585 | return xmlElement(_obj=o)
|
|---|
| 586 | if name == "attribute_decl":
|
|---|
| 587 | return xmlAttribute(_obj=o)
|
|---|
| 588 | if name == "entity_decl":
|
|---|
| 589 | return xmlEntity(_obj=o)
|
|---|
| 590 | if name == "dtd":
|
|---|
| 591 | return xmlDtd(_obj=o)
|
|---|
| 592 | return xmlNode(_obj=o)
|
|---|
| 593 |
|
|---|
| 594 | def xpathObjectRet(o):
|
|---|
| 595 | otype = type(o)
|
|---|
| 596 | if otype == type([]):
|
|---|
| 597 | ret = list(map(xpathObjectRet, o))
|
|---|
| 598 | return ret
|
|---|
| 599 | elif otype == type(()):
|
|---|
| 600 | ret = list(map(xpathObjectRet, o))
|
|---|
| 601 | return tuple(ret)
|
|---|
| 602 | elif otype == type('') or otype == type(0) or otype == type(0.0):
|
|---|
| 603 | return o
|
|---|
| 604 | else:
|
|---|
| 605 | return nodeWrap(o)
|
|---|
| 606 |
|
|---|
| 607 | #
|
|---|
| 608 | # register an XPath function
|
|---|
| 609 | #
|
|---|
| 610 | def registerXPathFunction(ctxt, name, ns_uri, f):
|
|---|
| 611 | ret = libxml2mod.xmlRegisterXPathFunction(ctxt, name, ns_uri, f)
|
|---|
| 612 |
|
|---|
| 613 | #
|
|---|
| 614 | # For the xmlTextReader parser configuration
|
|---|
| 615 | #
|
|---|
| 616 | PARSER_LOADDTD=1
|
|---|
| 617 | PARSER_DEFAULTATTRS=2
|
|---|
| 618 | PARSER_VALIDATE=3
|
|---|
| 619 | PARSER_SUBST_ENTITIES=4
|
|---|
| 620 |
|
|---|
| 621 | #
|
|---|
| 622 | # For the error callback severities
|
|---|
| 623 | #
|
|---|
| 624 | PARSER_SEVERITY_VALIDITY_WARNING=1
|
|---|
| 625 | PARSER_SEVERITY_VALIDITY_ERROR=2
|
|---|
| 626 | PARSER_SEVERITY_WARNING=3
|
|---|
| 627 | PARSER_SEVERITY_ERROR=4
|
|---|
| 628 |
|
|---|
| 629 | #
|
|---|
| 630 | # register the libxml2 error handler
|
|---|
| 631 | #
|
|---|
| 632 | def registerErrorHandler(f, ctx):
|
|---|
| 633 | """Register a Python written function to for error reporting.
|
|---|
| 634 | The function is called back as f(ctx, error). """
|
|---|
| 635 | import sys
|
|---|
| 636 | if 'libxslt' not in sys.modules:
|
|---|
| 637 | # normal behaviour when libxslt is not imported
|
|---|
| 638 | ret = libxml2mod.xmlRegisterErrorHandler(f,ctx)
|
|---|
| 639 | else:
|
|---|
| 640 | # when libxslt is already imported, one must
|
|---|
| 641 | # use libxst's error handler instead
|
|---|
| 642 | import libxslt
|
|---|
| 643 | ret = libxslt.registerErrorHandler(f,ctx)
|
|---|
| 644 | return ret
|
|---|
| 645 |
|
|---|
| 646 | class parserCtxtCore:
|
|---|
| 647 |
|
|---|
| 648 | def __init__(self, _obj=None):
|
|---|
| 649 | if _obj != None:
|
|---|
| 650 | self._o = _obj;
|
|---|
| 651 | return
|
|---|
| 652 | self._o = None
|
|---|
| 653 |
|
|---|
| 654 | def __del__(self):
|
|---|
| 655 | if self._o != None:
|
|---|
| 656 | libxml2mod.xmlFreeParserCtxt(self._o)
|
|---|
| 657 | self._o = None
|
|---|
| 658 |
|
|---|
| 659 | def setErrorHandler(self,f,arg):
|
|---|
| 660 | """Register an error handler that will be called back as
|
|---|
| 661 | f(arg,msg,severity,reserved).
|
|---|
| 662 |
|
|---|
| 663 | @reserved is currently always None."""
|
|---|
| 664 | libxml2mod.xmlParserCtxtSetErrorHandler(self._o,f,arg)
|
|---|
| 665 |
|
|---|
| 666 | def getErrorHandler(self):
|
|---|
| 667 | """Return (f,arg) as previously registered with setErrorHandler
|
|---|
| 668 | or (None,None)."""
|
|---|
| 669 | return libxml2mod.xmlParserCtxtGetErrorHandler(self._o)
|
|---|
| 670 |
|
|---|
| 671 | def addLocalCatalog(self, uri):
|
|---|
| 672 | """Register a local catalog with the parser"""
|
|---|
| 673 | return libxml2mod.addLocalCatalog(self._o, uri)
|
|---|
| 674 |
|
|---|
| 675 |
|
|---|
| 676 | class ValidCtxtCore:
|
|---|
| 677 |
|
|---|
| 678 | def __init__(self, *args, **kw):
|
|---|
| 679 | pass
|
|---|
| 680 |
|
|---|
| 681 | def setValidityErrorHandler(self, err_func, warn_func, arg=None):
|
|---|
| 682 | """
|
|---|
| 683 | Register error and warning handlers for DTD validation.
|
|---|
| 684 | These will be called back as f(msg,arg)
|
|---|
| 685 | """
|
|---|
| 686 | libxml2mod.xmlSetValidErrors(self._o, err_func, warn_func, arg)
|
|---|
| 687 |
|
|---|
| 688 |
|
|---|
| 689 | class SchemaValidCtxtCore:
|
|---|
| 690 |
|
|---|
| 691 | def __init__(self, *args, **kw):
|
|---|
| 692 | pass
|
|---|
| 693 |
|
|---|
| 694 | def setValidityErrorHandler(self, err_func, warn_func, arg=None):
|
|---|
| 695 | """
|
|---|
| 696 | Register error and warning handlers for Schema validation.
|
|---|
| 697 | These will be called back as f(msg,arg)
|
|---|
| 698 | """
|
|---|
| 699 | libxml2mod.xmlSchemaSetValidErrors(self._o, err_func, warn_func, arg)
|
|---|
| 700 |
|
|---|
| 701 |
|
|---|
| 702 | class relaxNgValidCtxtCore:
|
|---|
| 703 |
|
|---|
| 704 | def __init__(self, *args, **kw):
|
|---|
| 705 | pass
|
|---|
| 706 |
|
|---|
| 707 | def setValidityErrorHandler(self, err_func, warn_func, arg=None):
|
|---|
| 708 | """
|
|---|
| 709 | Register error and warning handlers for RelaxNG validation.
|
|---|
| 710 | These will be called back as f(msg,arg)
|
|---|
| 711 | """
|
|---|
| 712 | libxml2mod.xmlRelaxNGSetValidErrors(self._o, err_func, warn_func, arg)
|
|---|
| 713 |
|
|---|
| 714 |
|
|---|
| 715 | def _xmlTextReaderErrorFunc(xxx_todo_changeme,msg,severity,locator):
|
|---|
| 716 | """Intermediate callback to wrap the locator"""
|
|---|
| 717 | (f,arg) = xxx_todo_changeme
|
|---|
| 718 | return f(arg,msg,severity,xmlTextReaderLocator(locator))
|
|---|
| 719 |
|
|---|
| 720 | class xmlTextReaderCore:
|
|---|
| 721 |
|
|---|
| 722 | def __init__(self, _obj=None):
|
|---|
| 723 | self.input = None
|
|---|
| 724 | if _obj != None:self._o = _obj;return
|
|---|
| 725 | self._o = None
|
|---|
| 726 |
|
|---|
| 727 | def __del__(self):
|
|---|
| 728 | if self._o != None:
|
|---|
| 729 | libxml2mod.xmlFreeTextReader(self._o)
|
|---|
| 730 | self._o = None
|
|---|
| 731 |
|
|---|
| 732 | def SetErrorHandler(self,f,arg):
|
|---|
| 733 | """Register an error handler that will be called back as
|
|---|
| 734 | f(arg,msg,severity,locator)."""
|
|---|
| 735 | if f is None:
|
|---|
| 736 | libxml2mod.xmlTextReaderSetErrorHandler(\
|
|---|
| 737 | self._o,None,None)
|
|---|
| 738 | else:
|
|---|
| 739 | libxml2mod.xmlTextReaderSetErrorHandler(\
|
|---|
| 740 | self._o,_xmlTextReaderErrorFunc,(f,arg))
|
|---|
| 741 |
|
|---|
| 742 | def GetErrorHandler(self):
|
|---|
| 743 | """Return (f,arg) as previously registered with setErrorHandler
|
|---|
| 744 | or (None,None)."""
|
|---|
| 745 | f,arg = libxml2mod.xmlTextReaderGetErrorHandler(self._o)
|
|---|
| 746 | if f is None:
|
|---|
| 747 | return None,None
|
|---|
| 748 | else:
|
|---|
| 749 | # assert f is _xmlTextReaderErrorFunc
|
|---|
| 750 | return arg
|
|---|
| 751 |
|
|---|
| 752 | #
|
|---|
| 753 | # The cleanup now goes though a wrapper in libxml.c
|
|---|
| 754 | #
|
|---|
| 755 | def cleanupParser():
|
|---|
| 756 | libxml2mod.xmlPythonCleanupParser()
|
|---|
| 757 |
|
|---|
| 758 | #
|
|---|
| 759 | # The interface to xmlRegisterInputCallbacks.
|
|---|
| 760 | # Since this API does not allow to pass a data object along with
|
|---|
| 761 | # match/open callbacks, it is necessary to maintain a list of all
|
|---|
| 762 | # Python callbacks.
|
|---|
| 763 | #
|
|---|
| 764 | __input_callbacks = []
|
|---|
| 765 | def registerInputCallback(func):
|
|---|
| 766 | def findOpenCallback(URI):
|
|---|
| 767 | for cb in reversed(__input_callbacks):
|
|---|
| 768 | o = cb(URI)
|
|---|
| 769 | if o is not None:
|
|---|
| 770 | return o
|
|---|
| 771 | libxml2mod.xmlRegisterInputCallback(findOpenCallback)
|
|---|
| 772 | __input_callbacks.append(func)
|
|---|
| 773 |
|
|---|
| 774 | def popInputCallbacks():
|
|---|
| 775 | # First pop python-level callbacks, when no more available - start
|
|---|
| 776 | # popping built-in ones.
|
|---|
| 777 | if len(__input_callbacks) > 0:
|
|---|
| 778 | __input_callbacks.pop()
|
|---|
| 779 | if len(__input_callbacks) == 0:
|
|---|
| 780 | libxml2mod.xmlUnregisterInputCallback()
|
|---|
| 781 |
|
|---|
| 782 | # WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
|
|---|
| 783 | #
|
|---|
| 784 | # Everything before this line comes from libxml.py
|
|---|
| 785 | # Everything after this line is automatically generated
|
|---|
| 786 | #
|
|---|
| 787 | # WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
|
|---|
| 788 |
|
|---|
