import libxml2modimport typesimport sys # The root of all libxml2 errors.class libxmlError(Exception): pass ## id() is sometimes negative ...#def pos_id(o): i = id(o) if (i < 0): return (sys.maxint - i) return i ## Errors raised by the wrappers when some tree handling failed.#class treeError(libxmlError): def __init__(self, msg): self.msg = msg def __str__(self): return self.msg class parserError(libxmlError): def __init__(self, msg): self.msg = msg def __str__(self): return self.msg class uriError(libxmlError): def __init__(self, msg): self.msg = msg def __str__(self): return self.msg class xpathError(libxmlError): def __init__(self, msg): self.msg = msg def __str__(self): return self.msg class ioWrapper: def __init__(self, _obj): self.__io = _obj self._o = None def io_close(self): if self.__io == None: return(-1) self.__io.close() self.__io = None return(0) def io_flush(self): if self.__io == None: return(-1) self.__io.flush() return(0) def io_read(self, len = -1): if self.__io == None: return(-1) if len < 0: return(self.__io.read()) return(self.__io.read(len)) def io_write(self, str, len = -1): if self.__io == None: return(-1) if len < 0: return(self.__io.write(str)) return(self.__io.write(str, len)) class ioReadWrapper(ioWrapper): def __init__(self, _obj, enc = ""): ioWrapper.__init__(self, _obj) self._o = libxml2mod.xmlCreateInputBuffer(self, enc) def __del__(self): print "__del__" self.io_close() if self._o != None: libxml2mod.xmlFreeParserInputBuffer(self._o) self._o = None def close(self): self.io_close() if self._o != None: libxml2mod.xmlFreeParserInputBuffer(self._o) self._o = None class ioWriteWrapper(ioWrapper): def __init__(self, _obj, enc = ""):# print "ioWriteWrapper.__init__", _obj if type(_obj) == type(''): print "write io from a string" self.o = None elif type(_obj) == types.InstanceType: print "write io from instance of %s" % (_obj.__class__) ioWrapper.__init__(self, _obj) self._o = libxml2mod.xmlCreateOutputBuffer(self, enc) else: file = libxml2mod.outputBufferGetPythonFile(_obj) if file != None: ioWrapper.__init__(self, file) else: ioWrapper.__init__(self, _obj) self._o = _obj def __del__(self):# print "__del__" self.io_close() if self._o != None: libxml2mod.xmlOutputBufferClose(self._o) self._o = None def flush(self): self.io_flush() if self._o != None: libxml2mod.xmlOutputBufferClose(self._o) self._o = None def close(self): self.io_flush() if self._o != None: libxml2mod.xmlOutputBufferClose(self._o) self._o = None ## Example of a class to handle SAX events#class SAXCallback: """Base class for SAX handlers""" def startDocument(self): """called at the start of the document""" pass def endDocument(self): """called at the end of the document""" pass def startElement(self, tag, attrs): """called at the start of every element, tag is the name of the element, attrs is a dictionary of the element's attributes""" pass def endElement(self, tag): """called at the start of every element, tag is the name of the element""" pass def characters(self, data): """called when character data have been read, data is the string containing the data, multiple consecutive characters() callback are possible.""" pass def cdataBlock(self, data): """called when CDATA section have been read, data is the string containing the data, multiple consecutive cdataBlock() callback are possible.""" pass def reference(self, name): """called when an entity reference has been found""" pass def ignorableWhitespace(self, data): """called when potentially ignorable white spaces have been found""" pass def processingInstruction(self, target, data): """called when a PI has been found, target contains the PI name and data is the associated data in the PI""" pass def comment(self, content): """called when a comment has been found, content contains the comment""" pass def externalSubset(self, name, externalID, systemID): """called when a DOCTYPE declaration has been found, name is the DTD name and externalID, systemID are the DTD public and system identifier for that DTd if available""" pass def internalSubset(self, name, externalID, systemID): """called when a DOCTYPE declaration has been found, name is the DTD name and externalID, systemID are the DTD public and system identifier for that DTD if available""" pass def entityDecl(self, name, type, externalID, systemID, content): """called when an ENTITY declaration has been found, name is the entity name and externalID, systemID are the entity public and system identifier for that entity if available, type indicates the entity type, and content reports it's string content""" pass def notationDecl(self, name, externalID, systemID): """called when an NOTATION declaration has been found, name is the notation name and externalID, systemID are the notation public and system identifier for that notation if available""" pass def attributeDecl(self, elem, name, type, defi, defaultValue, nameList): """called when an ATTRIBUTE definition has been found""" pass def elementDecl(self, name, type, content): """called when an ELEMENT definition has been found""" pass def entityDecl(self, name, publicId, systemID, notationName): """called when an unparsed ENTITY declaration has been found, name is the entity name and publicId,, systemID are the entity public and system identifier for that entity if available, and notationName indicate the associated NOTATION""" pass def warning(self, msg): #print msg pass def error(self, msg): raise parserError(msg) def fatalError(self, msg): raise parserError(msg) ## This class is the ancestor of all the Node classes. It provides# the basic functionalities shared by all nodes (and handle# gracefylly the exception), like name, navigation in the tree,# doc reference, content access and serializing to a string or URI#class xmlCore: def __init__(self, _obj=None): if _obj != None: self._o = _obj; return self._o = None def __eq__(self, other): if other == None: return False ret = libxml2mod.compareNodesEqual(self._o, other._o) if ret == None: return False return ret == True def __ne__(self, other): if other == None: return True ret = libxml2mod.compareNodesEqual(self._o, other._o) return not ret def __hash__(self): ret = libxml2mod.nodeHash(self._o) return ret def __str__(self): return self.serialize() def get_parent(self): ret = libxml2mod.parent(self._o) if ret == None: return None return xmlNode(_obj=ret) def get_children(self): ret = libxml2mod.children(self._o) if ret == None: return None return xmlNode(_obj=ret) def get_last(self): ret = libxml2mod.last(self._o) if ret == None: return None return xmlNode(_obj=ret) def get_next(self): ret = libxml2mod.next(self._o) if ret == None: return None return xmlNode(_obj=ret) def get_properties(self): ret = libxml2mod.properties(self._o) if ret == None: return None return xmlAttr(_obj=ret) def get_prev(self): ret = libxml2mod.prev(self._o) if ret == None: return None return xmlNode(_obj=ret) def get_content(self): return libxml2mod.xmlNodeGetContent(self._o) getContent = get_content # why is this duplicate naming needed ? def get_name(self): return libxml2mod.name(self._o) def get_type(self): return libxml2mod.type(self._o) def get_doc(self): ret = libxml2mod.doc(self._o) if ret == None: if self.type in ["document_xml", "document_html"]: return xmlDoc(_obj=self._o) else: return None return xmlDoc(_obj=ret) # # Those are common attributes to nearly all type of nodes # defined as python2 properties # import sys if float(sys.version[0:3]) < 2.2: def __getattr__(self, attr): if attr == "parent": ret = libxml2mod.parent(self._o) if ret == None: return None return xmlNode(_obj=ret) elif attr == "properties": ret = libxml2mod.properties(self._o) if ret == None: return None return xmlAttr(_obj=ret) elif attr == "children": ret = libxml2mod.children(self._o) if ret == None: return None return xmlNode(_obj=ret) elif attr == "last": ret = libxml2mod.last(self._o) if ret == None: return None return xmlNode(_obj=ret) elif attr == "next": ret = libxml2mod.next(self._o) if ret == None: return None return xmlNode(_obj=ret) elif attr == "prev": ret = libxml2mod.prev(self._o) if ret == None: return None return xmlNode(_obj=ret) elif attr == "content": return libxml2mod.xmlNodeGetContent(self._o) elif attr == "name": return libxml2mod.name(self._o) elif attr == "type": return libxml2mod.type(self._o) elif attr == "doc": ret = libxml2mod.doc(self._o) if ret == None: if self.type == "document_xml" or self.type == "document_html": return xmlDoc(_obj=self._o) else: return None return xmlDoc(_obj=ret) raise AttributeError,attr else: parent = property(get_parent, None, None, "Parent node") children = property(get_children, None, None, "First child node") last = property(get_last, None, None, "Last sibling node") next = property(get_next, None, None, "Next sibling node") prev = property(get_prev, None, None, "Previous sibling node") properties = property(get_properties, None, None, "List of properies") content = property(get_content, None, None, "Content of this node") name = property(get_name, None, None, "Node name") type = property(get_type, None, None, "Node type") doc = property(get_doc, None, None, "The document this node belongs to") # # Serialization routines, the optional arguments have the following # meaning: # encoding: string to ask saving in a specific encoding # indent: if 1 the serializer is asked to indent the output # def serialize(self, encoding = None, format = 0): return libxml2mod.serializeNode(self._o, encoding, format) def saveTo(self, file, encoding = None, format = 0): return libxml2mod.saveNodeTo(self._o, file, encoding, format) # # Canonicalization routines: # # nodes: the node set (tuple or list) to be included in the # canonized image or None if all document nodes should be # included. # exclusive: the exclusive flag (0 - non-exclusive # canonicalization; otherwise - exclusive canonicalization) # prefixes: the list of inclusive namespace prefixes (strings), # or None if there is no inclusive namespaces (only for # exclusive canonicalization, ignored otherwise) # with_comments: include comments in the result (!=0) or not # (==0) def c14nMemory(self, nodes=None, exclusive=0, prefixes=None, with_comments=0): if nodes: nodes = map(lambda n: n._o, nodes) return libxml2mod.xmlC14NDocDumpMemory( self.get_doc()._o, nodes, exclusive != 0, prefixes, with_comments != 0) def c14nSaveTo(self, file, nodes=None, exclusive=0, prefixes=None, with_comments=0): if nodes: nodes = map(lambda n: n._o, nodes) return libxml2mod.xmlC14NDocSaveTo( self.get_doc()._o, nodes, exclusive != 0, prefixes, with_comments != 0, file) # # Selecting nodes using XPath, a bit slow because the context # is allocated/freed every time but convenient. # def xpathEval(self, expr): doc = self.doc if doc == None: return None ctxt = doc.xpathNewContext() ctxt.setContextNode(self) res = ctxt.xpathEval(expr) ctxt.xpathFreeContext() return res # ## # Selecting nodes using XPath, faster because the context# # is allocated just once per xmlDoc.# ## # Removed: DV memleaks c.f. #126735# ## def xpathEval2(self, expr):# doc = self.doc# if doc == None:# return None# try:# doc._ctxt.setContextNode(self)# except:# doc._ctxt = doc.xpathNewContext()# doc._ctxt.setContextNode(self)# res = doc._ctxt.xpathEval(expr)# return res def xpathEval2(self, expr): return self.xpathEval(expr) # Remove namespaces def removeNsDef(self, href): """ Remove a namespace definition from a node. If href is None, remove all of the ns definitions on that node. The removed namespaces are returned as a linked list. Note: If any child nodes referred to the removed namespaces, they will be left with dangling links. You should call renconciliateNs() to fix those pointers. Note: This method does not free memory taken by the ns definitions. You will need to free it manually with the freeNsList() method on the returns xmlNs object. """ ret = libxml2mod.xmlNodeRemoveNsDef(self._o, href) if ret is None:return None __tmp = xmlNs(_obj=ret) return __tmp # support for python2 iterators def walk_depth_first(self): return xmlCoreDepthFirstItertor(self) def walk_breadth_first(self): return xmlCoreBreadthFirstItertor(self) __iter__ = walk_depth_first def free(self): try: self.doc._ctxt.xpathFreeContext() except: pass libxml2mod.xmlFreeDoc(self._o) ## implements the depth-first iterator for libxml2 DOM tree#class xmlCoreDepthFirstItertor: def __init__(self, node):Lines 1–500 of 733. Load more
import libxml2mod import types import sys # The root of all libxml2 errors. class libxmlError(Exception): pass # # id() is sometimes negative ... # def pos_id(o): i = id(o) if (i < 0): return (sys.maxint - i) return i # # Errors raised by the wrappers when some tree handling failed. # class treeError(libxmlError): def __init__(self, msg): self.msg = msg def __str__(self): return self.msg class parserError(libxmlError): def __init__(self, msg): self.msg = msg def __str__(self): return self.msg class uriError(libxmlError): def __init__(self, msg): self.msg = msg def __str__(self): return self.msg class xpathError(libxmlError): def __init__(self, msg): self.msg = msg def __str__(self): return self.msg class ioWrapper: def __init__(self, _obj): self.__io = _obj self._o = None def io_close(self): if self.__io == None: return(-1) self.__io.close() self.__io = None return(0) def io_flush(self): if self.__io == None: return(-1) self.__io.flush() return(0) def io_read(self, len = -1): if self.__io == None: return(-1) if len < 0: return(self.__io.read()) return(self.__io.read(len)) def io_write(self, str, len = -1): if self.__io == None: return(-1) if len < 0: return(self.__io.write(str)) return(self.__io.write(str, len)) class ioReadWrapper(ioWrapper): def __init__(self, _obj, enc = ""): ioWrapper.__init__(self, _obj) self._o = libxml2mod.xmlCreateInputBuffer(self, enc) def __del__(self): print "__del__" self.io_close() if self._o != None: libxml2mod.xmlFreeParserInputBuffer(self._o) self._o = None def close(self): self.io_close() if self._o != None: libxml2mod.xmlFreeParserInputBuffer(self._o) self._o = None class ioWriteWrapper(ioWrapper): def __init__(self, _obj, enc = ""): # print "ioWriteWrapper.__init__", _obj if type(_obj) == type(''): print "write io from a string" self.o = None elif type(_obj) == types.InstanceType: print "write io from instance of %s" % (_obj.__class__) ioWrapper.__init__(self, _obj) self._o = libxml2mod.xmlCreateOutputBuffer(self, enc) else: file = libxml2mod.outputBufferGetPythonFile(_obj) if file != None: ioWrapper.__init__(self, file) else: ioWrapper.__init__(self, _obj) self._o = _obj def __del__(self): # print "__del__" self.io_close() if self._o != None: libxml2mod.xmlOutputBufferClose(self._o) self._o = None def flush(self): self.io_flush() if self._o != None: libxml2mod.xmlOutputBufferClose(self._o) self._o = None def close(self): self.io_flush() if self._o != None: libxml2mod.xmlOutputBufferClose(self._o) self._o = None # # Example of a class to handle SAX events # class SAXCallback: """Base class for SAX handlers""" def startDocument(self): """called at the start of the document""" pass def endDocument(self): """called at the end of the document""" pass def startElement(self, tag, attrs): """called at the start of every element, tag is the name of the element, attrs is a dictionary of the element's attributes""" pass def endElement(self, tag): """called at the start of every element, tag is the name of the element""" pass def characters(self, data): """called when character data have been read, data is the string containing the data, multiple consecutive characters() callback are possible.""" pass def cdataBlock(self, data): """called when CDATA section have been read, data is the string containing the data, multiple consecutive cdataBlock() callback are possible.""" pass def reference(self, name): """called when an entity reference has been found""" pass def ignorableWhitespace(self, data): """called when potentially ignorable white spaces have been found""" pass def processingInstruction(self, target, data): """called when a PI has been found, target contains the PI name and data is the associated data in the PI""" pass def comment(self, content): """called when a comment has been found, content contains the comment""" pass def externalSubset(self, name, externalID, systemID): """called when a DOCTYPE declaration has been found, name is the DTD name and externalID, systemID are the DTD public and system identifier for that DTd if available""" pass def internalSubset(self, name, externalID, systemID): """called when a DOCTYPE declaration has been found, name is the DTD name and externalID, systemID are the DTD public and system identifier for that DTD if available""" pass def entityDecl(self, name, type, externalID, systemID, content): """called when an ENTITY declaration has been found, name is the entity name and externalID, systemID are the entity public and system identifier for that entity if available, type indicates the entity type, and content reports it's string content""" pass def notationDecl(self, name, externalID, systemID): """called when an NOTATION declaration has been found, name is the notation name and externalID, systemID are the notation public and system identifier for that notation if available""" pass def attributeDecl(self, elem, name, type, defi, defaultValue, nameList): """called when an ATTRIBUTE definition has been found""" pass def elementDecl(self, name, type, content): """called when an ELEMENT definition has been found""" pass def entityDecl(self, name, publicId, systemID, notationName): """called when an unparsed ENTITY declaration has been found, name is the entity name and publicId,, systemID are the entity public and system identifier for that entity if available, and notationName indicate the associated NOTATION""" pass def warning(self, msg): #print msg pass def error(self, msg): raise parserError(msg) def fatalError(self, msg): raise parserError(msg) # # This class is the ancestor of all the Node classes. It provides # the basic functionalities shared by all nodes (and handle # gracefylly the exception), like name, navigation in the tree, # doc reference, content access and serializing to a string or URI # class xmlCore: def __init__(self, _obj=None): if _obj != None: self._o = _obj; return self._o = None def __eq__(self, other): if other == None: return False ret = libxml2mod.compareNodesEqual(self._o, other._o) if ret == None: return False return ret == True def __ne__(self, other): if other == None: return True ret = libxml2mod.compareNodesEqual(self._o, other._o) return not ret def __hash__(self): ret = libxml2mod.nodeHash(self._o) return ret def __str__(self): return self.serialize() def get_parent(self): ret = libxml2mod.parent(self._o) if ret == None: return None return xmlNode(_obj=ret) def get_children(self): ret = libxml2mod.children(self._o) if ret == None: return None return xmlNode(_obj=ret) def get_last(self): ret = libxml2mod.last(self._o) if ret == None: return None return xmlNode(_obj=ret) def get_next(self): ret = libxml2mod.next(self._o) if ret == None: return None return xmlNode(_obj=ret) def get_properties(self): ret = libxml2mod.properties(self._o) if ret == None: return None return xmlAttr(_obj=ret) def get_prev(self): ret = libxml2mod.prev(self._o) if ret == None: return None return xmlNode(_obj=ret) def get_content(self): return libxml2mod.xmlNodeGetContent(self._o) getContent = get_content # why is this duplicate naming needed ? def get_name(self): return libxml2mod.name(self._o) def get_type(self): return libxml2mod.type(self._o) def get_doc(self): ret = libxml2mod.doc(self._o) if ret == None: if self.type in ["document_xml", "document_html"]: return xmlDoc(_obj=self._o) else: return None return xmlDoc(_obj=ret) # # Those are common attributes to nearly all type of nodes # defined as python2 properties # import sys if float(sys.version[0:3]) < 2.2: def __getattr__(self, attr): if attr == "parent": ret = libxml2mod.parent(self._o) if ret == None: return None return xmlNode(_obj=ret) elif attr == "properties": ret = libxml2mod.properties(self._o) if ret == None: return None return xmlAttr(_obj=ret) elif attr == "children": ret = libxml2mod.children(self._o) if ret == None: return None return xmlNode(_obj=ret) elif attr == "last": ret = libxml2mod.last(self._o) if ret == None: return None return xmlNode(_obj=ret) elif attr == "next": ret = libxml2mod.next(self._o) if ret == None: return None return xmlNode(_obj=ret) elif attr == "prev": ret = libxml2mod.prev(self._o) if ret == None: return None return xmlNode(_obj=ret) elif attr == "content": return libxml2mod.xmlNodeGetContent(self._o) elif attr == "name": return libxml2mod.name(self._o) elif attr == "type": return libxml2mod.type(self._o) elif attr == "doc": ret = libxml2mod.doc(self._o) if ret == None: if self.type == "document_xml" or self.type == "document_html": return xmlDoc(_obj=self._o) else: return None return xmlDoc(_obj=ret) raise AttributeError,attr else: parent = property(get_parent, None, None, "Parent node") children = property(get_children, None, None, "First child node") last = property(get_last, None, None, "Last sibling node") next = property(get_next, None, None, "Next sibling node") prev = property(get_prev, None, None, "Previous sibling node") properties = property(get_properties, None, None, "List of properies") content = property(get_content, None, None, "Content of this node") name = property(get_name, None, None, "Node name") type = property(get_type, None, None, "Node type") doc = property(get_doc, None, None, "The document this node belongs to") # # Serialization routines, the optional arguments have the following # meaning: # encoding: string to ask saving in a specific encoding # indent: if 1 the serializer is asked to indent the output # def serialize(self, encoding = None, format = 0): return libxml2mod.serializeNode(self._o, encoding, format) def saveTo(self, file, encoding = None, format = 0): return libxml2mod.saveNodeTo(self._o, file, encoding, format) # # Canonicalization routines: # # nodes: the node set (tuple or list) to be included in the # canonized image or None if all document nodes should be # included. # exclusive: the exclusive flag (0 - non-exclusive # canonicalization; otherwise - exclusive canonicalization) # prefixes: the list of inclusive namespace prefixes (strings), # or None if there is no inclusive namespaces (only for # exclusive canonicalization, ignored otherwise) # with_comments: include comments in the result (!=0) or not # (==0) def c14nMemory(self, nodes=None, exclusive=0, prefixes=None, with_comments=0): if nodes: nodes = map(lambda n: n._o, nodes) return libxml2mod.xmlC14NDocDumpMemory( self.get_doc()._o, nodes, exclusive != 0, prefixes, with_comments != 0) def c14nSaveTo(self, file, nodes=None, exclusive=0, prefixes=None, with_comments=0): if nodes: nodes = map(lambda n: n._o, nodes) return libxml2mod.xmlC14NDocSaveTo( self.get_doc()._o, nodes, exclusive != 0, prefixes, with_comments != 0, file) # # Selecting nodes using XPath, a bit slow because the context # is allocated/freed every time but convenient. # def xpathEval(self, expr): doc = self.doc if doc == None: return None ctxt = doc.xpathNewContext() ctxt.setContextNode(self) res = ctxt.xpathEval(expr) ctxt.xpathFreeContext() return res # # # # Selecting nodes using XPath, faster because the context # # is allocated just once per xmlDoc. # # # # Removed: DV memleaks c.f. #126735 # # # def xpathEval2(self, expr): # doc = self.doc # if doc == None: # return None # try: # doc._ctxt.setContextNode(self) # except: # doc._ctxt = doc.xpathNewContext() # doc._ctxt.setContextNode(self) # res = doc._ctxt.xpathEval(expr) # return res def xpathEval2(self, expr): return self.xpathEval(expr) # Remove namespaces def removeNsDef(self, href): """ Remove a namespace definition from a node. If href is None, remove all of the ns definitions on that node. The removed namespaces are returned as a linked list. Note: If any child nodes referred to the removed namespaces, they will be left with dangling links. You should call renconciliateNs() to fix those pointers. Note: This method does not free memory taken by the ns definitions. You will need to free it manually with the freeNsList() method on the returns xmlNs object. """ ret = libxml2mod.xmlNodeRemoveNsDef(self._o, href) if ret is None:return None __tmp = xmlNs(_obj=ret) return __tmp # support for python2 iterators def walk_depth_first(self): return xmlCoreDepthFirstItertor(self) def walk_breadth_first(self): return xmlCoreBreadthFirstItertor(self) __iter__ = walk_depth_first def free(self): try: self.doc._ctxt.xpathFreeContext() except: pass libxml2mod.xmlFreeDoc(self._o) # # implements the depth-first iterator for libxml2 DOM tree # class xmlCoreDepthFirstItertor: def __init__(self, node):