xpathInternals.h stdio.h libxml/xmlversion.h libxml/xpath.h libxml2-2.15.1/c14n.c libxml2-2.15.1/xpath.c libxml2-2.15.1/xpointer.c valuePush xmlXPathValuePush Push a value on the stack. DeprecatedUse xmlXPathValuePush valuePop xmlXPathValuePop Pop a value from the stack. DeprecatedUse xmlXPathValuePop xmlXPathSetError ctxt err { xmlXPatherror((ctxt), __FILE__, __LINE__, (err)); \ if ((ctxt) != NULL) (ctxt)->error = (err); } Raises an error. ctxt an XPath parser context err an xmlXPathError code xmlXPathSetArityError ctxt xmlXPathSetError((ctxt), XPATH_INVALID_ARITY) Raises an XPATH_INVALID_ARITY error. ctxt an XPath parser context xmlXPathSetTypeError ctxt xmlXPathSetError((ctxt), XPATH_INVALID_TYPE) Raises an XPATH_INVALID_TYPE error. ctxt an XPath parser context xmlXPathGetError ctxt ((ctxt)->error) Get the error code of an XPath context. ctxt an XPath parser context the context error. xmlXPathCheckError ctxt ((ctxt)->error != XPATH_EXPRESSION_OK) Check if an XPath error was raised. ctxt an XPath parser context true if an error has been raised, false otherwise. xmlXPathGetDocument ctxt ((ctxt)->context->doc) Get the document of an XPath context. ctxt an XPath parser context the context document. xmlXPathGetContextNode ctxt ((ctxt)->context->node) Get the context node of an XPath context. ctxt an XPath parser context the context node. xmlXPathReturnBoolean ctxt val valuePush((ctxt), xmlXPathNewBoolean(val)) Pushes the boolean val on the context stack. ctxt an XPath parser context val a boolean xmlXPathReturnTrue ctxt xmlXPathReturnBoolean((ctxt), 1) Pushes true on the context stack. ctxt an XPath parser context xmlXPathReturnFalse ctxt xmlXPathReturnBoolean((ctxt), 0) Pushes false on the context stack. ctxt an XPath parser context xmlXPathReturnNumber ctxt val valuePush((ctxt), xmlXPathNewFloat(val)) Pushes the double val on the context stack. ctxt an XPath parser context val a double xmlXPathReturnString ctxt str valuePush((ctxt), xmlXPathWrapString(str)) Pushes the string str on the context stack. ctxt an XPath parser context str a string xmlXPathReturnEmptyString ctxt valuePush((ctxt), xmlXPathNewCString("")) Pushes an empty string on the stack. ctxt an XPath parser context xmlXPathReturnNodeSet ctxt ns valuePush((ctxt), xmlXPathWrapNodeSet(ns)) Pushes the node-set ns on the context stack. ctxt an XPath parser context ns a node-set xmlXPathReturnEmptyNodeSet ctxt valuePush((ctxt), xmlXPathNewNodeSet(NULL)) Pushes an empty node-set on the context stack. ctxt an XPath parser context xmlXPathReturnExternal ctxt val valuePush((ctxt), xmlXPathWrapExternal(val)) Pushes user data on the context stack. ctxt an XPath parser context val user data xmlXPathStackIsNodeSet ctxt (((ctxt)->value != NULL) \ && (((ctxt)->value->type == XPATH_NODESET) \ || ((ctxt)->value->type == XPATH_XSLT_TREE))) Check if the current value on the XPath stack is a node set or an XSLT value tree. ctxt an XPath parser context true if the current object on the stack is a node-set. xmlXPathStackIsExternal ctxt ((ctxt->value != NULL) && (ctxt->value->type == XPATH_USERS)) Checks if the current value on the XPath stack is an external object. ctxt an XPath parser context true if the current object on the stack is an external object. xmlXPathEmptyNodeSet ns { while ((ns)->nodeNr > 0) (ns)->nodeTab[--(ns)->nodeNr] = NULL; } Empties a node-set. ns a node-set CHECK_ERROR if (ctxt->error != XPATH_EXPRESSION_OK) return Macro to return from the function if an XPath error was detected. CHECK_ERROR0 if (ctxt->error != XPATH_EXPRESSION_OK) return(0) Macro to return 0 from the function if an XPath error was detected. XP_ERROR X { xmlXPathErr(ctxt, X); return; } Macro to raise an XPath error and return. X the error code XP_ERROR0 X { xmlXPathErr(ctxt, X); return(0); } Macro to raise an XPath error and return 0. X the error code CHECK_TYPE typeval if ((ctxt->value == NULL) || (ctxt->value->type != typeval)) \ XP_ERROR(XPATH_INVALID_TYPE) Macro to check that the value on top of the XPath stack is of a given type. typeval the XPath type CHECK_TYPE0 typeval if ((ctxt->value == NULL) || (ctxt->value->type != typeval)) \ XP_ERROR0(XPATH_INVALID_TYPE) Macro to check that the value on top of the XPath stack is of a given type. Return(0) in case of failure typeval the XPath type CHECK_ARITY x if (ctxt == NULL) return; \ if (nargs != (x)) \ XP_ERROR(XPATH_INVALID_ARITY); \ if (ctxt->valueNr < (x)) \ XP_ERROR(XPATH_STACK_ERROR); Macro to check that the number of args passed to an XPath function matches. x the number of expected args CAST_TO_STRING if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_STRING)) \ xmlXPathStringFunction(ctxt, 1); Macro to try to cast the value on the top of the XPath stack to a string. CAST_TO_NUMBER if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_NUMBER)) \ xmlXPathNumberFunction(ctxt, 1); Macro to try to cast the value on the top of the XPath stack to a number. CAST_TO_BOOLEAN if ((ctxt->value != NULL) && (ctxt->value->type != XPATH_BOOLEAN)) \ xmlXPathBooleanFunction(ctxt, 1); Macro to try to cast the value on the top of the XPath stack to a boolean. int int xmlXPathPopBoolean (xmlXPathParserContext *ctxt) xmlXPathPopBoolean xmlXPathParserContext * ctxt Pops a boolean from the stack, handling conversion if needed. Check error with xmlXPathCheckError. ctxt an XPath parser context the boolean double double xmlXPathPopNumber (xmlXPathParserContext *ctxt) xmlXPathPopNumber xmlXPathParserContext * ctxt Pops a number from the stack, handling conversion if needed. Check error with xmlXPathCheckError. ctxt an XPath parser context the number xmlChar * xmlChar * xmlXPathPopString (xmlXPathParserContext *ctxt) xmlXPathPopString xmlXPathParserContext * ctxt Pops a string from the stack, handling conversion if needed. Check error with xmlXPathCheckError. ctxt an XPath parser context the string xmlNodeSet * xmlNodeSet * xmlXPathPopNodeSet (xmlXPathParserContext *ctxt) xmlXPathPopNodeSet xmlXPathParserContext * ctxt Pops a node-set from the stack, handling conversion if needed. Check error with xmlXPathCheckError. ctxt an XPath parser context the node-set void * void * xmlXPathPopExternal (xmlXPathParserContext *ctxt) xmlXPathPopExternal xmlXPathParserContext * ctxt Pops an external object from the stack, handling conversion if needed. Check error with xmlXPathCheckError. ctxt an XPath parser context the object void void xmlXPathRegisterVariableLookup (xmlXPathContext *ctxt, xmlXPathVariableLookupFunc f, void *data) xmlXPathRegisterVariableLookup xmlXPathContext * ctxt xmlXPathVariableLookupFunc f void * data register an external mechanism to do variable lookup ctxt the XPath context f the lookup function data the lookup data void void xmlXPathRegisterFuncLookup (xmlXPathContext *ctxt, xmlXPathFuncLookupFunc f, void *funcCtxt) xmlXPathRegisterFuncLookup xmlXPathContext * ctxt xmlXPathFuncLookupFunc f void * funcCtxt Registers an external mechanism to do function lookup. ctxt the XPath context f the lookup function funcCtxt the lookup data void void xmlXPatherror (xmlXPathParserContext *ctxt, const char *file, int line, int no) xmlXPatherror xmlXPathParserContext * ctxt const char * file int line int no Formats an error message. ctxt the XPath Parser context file the file name line the line number no the error number void void xmlXPathErr (xmlXPathParserContext *ctxt, int error) xmlXPathErr xmlXPathParserContext * ctxt int error code Handle an XPath error. ctxt a XPath parser context code the error code void void xmlXPathDebugDumpObject (FILE *output, xmlXPathObject *cur, int depth) xmlXPathDebugDumpObject FILE * output xmlXPathObject * cur int depth Dump the content of the object for debugging purposes. output the FILE * to dump the output cur the object to inspect depth indentation level void void xmlXPathDebugDumpCompExpr (FILE *output, xmlXPathCompExpr *comp, int depth) xmlXPathDebugDumpCompExpr FILE * output xmlXPathCompExpr * comp int depth Dumps the tree of the compiled XPath expression. output the FILE * for the output comp the precompiled XPath expression depth the indentation level. int int xmlXPathNodeSetContains (xmlNodeSet *cur, xmlNode *val) xmlXPathNodeSetContains xmlNodeSet * cur xmlNode * val NodeSet handling. NodeSet handling. cur the node-set val the node true (1) if cur contains val, false (0) otherwise xmlNodeSet * xmlNodeSet * xmlXPathDifference (xmlNodeSet *nodes1, xmlNodeSet *nodes2) xmlXPathDifference xmlNodeSet * nodes1 xmlNodeSet * nodes2 Implements the EXSLT - Sets difference() function: node-set set:difference (node-set, node-set). nodes1 a node-set nodes2 a node-set the difference between the two node sets, or nodes1 if nodes2 is empty xmlNodeSet * xmlNodeSet * xmlXPathIntersection (xmlNodeSet *nodes1, xmlNodeSet *nodes2) xmlXPathIntersection xmlNodeSet * nodes1 xmlNodeSet * nodes2 Implements the EXSLT - Sets intersection() function: node-set set:intersection (node-set, node-set). nodes1 a node-set nodes2 a node-set a node set comprising the nodes that are within both the node sets passed as arguments xmlNodeSet * xmlNodeSet * xmlXPathDistinctSorted (xmlNodeSet *nodes) xmlXPathDistinctSorted xmlNodeSet * nodes Implements the EXSLT - Sets distinct() function: node-set set:distinct (node-set). nodes a node-set, sorted by document order a subset of the nodes contained in nodes, or nodes if it is empty xmlNodeSet * xmlNodeSet * xmlXPathDistinct (xmlNodeSet *nodes) xmlXPathDistinct xmlNodeSet * nodes Implements the EXSLT - Sets distinct() function: node-set set:distinct (node-set) nodes is sorted by document order, then exslSetsDistinctSorted is called with the sorted node-set. nodes a node-set a subset of the nodes contained in nodes, or nodes if it is empty int int xmlXPathHasSameNodes (xmlNodeSet *nodes1, xmlNodeSet *nodes2) xmlXPathHasSameNodes xmlNodeSet * nodes1 xmlNodeSet * nodes2 Implements the EXSLT - Sets has-same-nodes function: boolean set:has-same-node(node-set, node-set). nodes1 a node-set nodes2 a node-set true (1) if nodes1 shares any node with nodes2, false (0) otherwise xmlNodeSet * xmlNodeSet * xmlXPathNodeLeadingSorted (xmlNodeSet *nodes, xmlNode *node) xmlXPathNodeLeadingSorted xmlNodeSet * nodes xmlNode * node Implements the EXSLT - Sets leading() function: node-set set:leading (node-set, node-set). nodes a node-set, sorted by document order node a node the nodes in nodes that precede node in document order, nodes if node is NULL or an empty node-set if nodes doesn't contain node xmlNodeSet * xmlNodeSet * xmlXPathLeadingSorted (xmlNodeSet *nodes1, xmlNodeSet *nodes2) xmlXPathLeadingSorted xmlNodeSet * nodes1 xmlNodeSet * nodes2 Implements the EXSLT - Sets leading() function: node-set set:leading (node-set, node-set). nodes1 a node-set, sorted by document order nodes2 a node-set, sorted by document order the nodes in nodes1 that precede the first node in nodes2 in document order, nodes1 if nodes2 is NULL or empty or an empty node-set if nodes1 doesn't contain nodes2 xmlNodeSet * xmlNodeSet * xmlXPathNodeLeading (xmlNodeSet *nodes, xmlNode *node) xmlXPathNodeLeading xmlNodeSet * nodes xmlNode * node Implements the EXSLT - Sets leading() function: node-set set:leading (node-set, node-set) nodes is sorted by document order, then exslSetsNodeLeadingSorted is called. nodes a node-set node a node the nodes in nodes that precede node in document order, nodes if node is NULL or an empty node-set if nodes doesn't contain node xmlNodeSet * xmlNodeSet * xmlXPathLeading (xmlNodeSet *nodes1, xmlNodeSet *nodes2) xmlXPathLeading xmlNodeSet * nodes1 xmlNodeSet * nodes2 Implements the EXSLT - Sets leading() function: node-set set:leading (node-set, node-set) nodes1 and nodes2 are sorted by document order, then exslSetsLeadingSorted is called. nodes1 a node-set nodes2 a node-set the nodes in nodes1 that precede the first node in nodes2 in document order, nodes1 if nodes2 is NULL or empty or an empty node-set if nodes1 doesn't contain nodes2 xmlNodeSet * xmlNodeSet * xmlXPathNodeTrailingSorted (xmlNodeSet *nodes, xmlNode *node) xmlXPathNodeTrailingSorted xmlNodeSet * nodes xmlNode * node Implements the EXSLT - Sets trailing() function: node-set set:trailing (node-set, node-set). nodes a node-set, sorted by document order node a node the nodes in nodes that follow node in document order, nodes if node is NULL or an empty node-set if nodes doesn't contain node xmlNodeSet * xmlNodeSet * xmlXPathTrailingSorted (xmlNodeSet *nodes1, xmlNodeSet *nodes2) xmlXPathTrailingSorted xmlNodeSet * nodes1 xmlNodeSet * nodes2 Implements the EXSLT - Sets trailing() function: node-set set:trailing (node-set, node-set). nodes1 a node-set, sorted by document order nodes2 a node-set, sorted by document order the nodes in nodes1 that follow the first node in nodes2 in document order, nodes1 if nodes2 is NULL or empty or an empty node-set if nodes1 doesn't contain nodes2 xmlNodeSet * xmlNodeSet * xmlXPathNodeTrailing (xmlNodeSet *nodes, xmlNode *node) xmlXPathNodeTrailing xmlNodeSet * nodes xmlNode * node Implements the EXSLT - Sets trailing() function: node-set set:trailing (node-set, node-set) nodes is sorted by document order, then xmlXPathNodeTrailingSorted is called. nodes a node-set node a node the nodes in nodes that follow node in document order, nodes if node is NULL or an empty node-set if nodes doesn't contain node xmlNodeSet * xmlNodeSet * xmlXPathTrailing (xmlNodeSet *nodes1, xmlNodeSet *nodes2) xmlXPathTrailing xmlNodeSet * nodes1 xmlNodeSet * nodes2 Implements the EXSLT - Sets trailing() function: node-set set:trailing (node-set, node-set) nodes1 and nodes2 are sorted by document order, then xmlXPathTrailingSorted is called. nodes1 a node-set nodes2 a node-set the nodes in nodes1 that follow the first node in nodes2 in document order, nodes1 if nodes2 is NULL or empty or an empty node-set if nodes1 doesn't contain nodes2 int int xmlXPathRegisterNs (xmlXPathContext *ctxt, const xmlChar *prefix, const xmlChar *ns_uri) xmlXPathRegisterNs xmlXPathContext * ctxt const xmlChar * prefix const xmlChar * ns_uri Extending a context. Extending a context. If ns_uri is NULL it unregisters the namespace ctxt the XPath context prefix the namespace prefix cannot be NULL or empty string ns_uri the namespace name 0 in case of success, -1 in case of error const xmlChar * const xmlChar * xmlXPathNsLookup (xmlXPathContext *ctxt, const xmlChar *prefix) xmlXPathNsLookup xmlXPathContext * ctxt const xmlChar * prefix Search in the namespace declaration array of the context for the given namespace name associated to the given prefix. ctxt the XPath context prefix the namespace prefix value the value or NULL if not found void void xmlXPathRegisteredNsCleanup (xmlXPathContext *ctxt) xmlXPathRegisteredNsCleanup xmlXPathContext * ctxt Cleanup the XPath context data associated to registered variables. ctxt the XPath context int int xmlXPathRegisterFunc (xmlXPathContext *ctxt, const xmlChar *name, xmlXPathFunction f) xmlXPathRegisterFunc xmlXPathContext * ctxt const xmlChar * name xmlXPathFunction f Register a new function. If f is NULL it unregisters the function ctxt the XPath context name the function name f the function implementation or NULL 0 in case of success, -1 in case of error int int xmlXPathRegisterFuncNS (xmlXPathContext *ctxt, const xmlChar *name, const xmlChar *ns_uri, xmlXPathFunction f) xmlXPathRegisterFuncNS xmlXPathContext * ctxt const xmlChar * name const xmlChar * ns_uri xmlXPathFunction f Register a new function. If f is NULL it unregisters the function ctxt the XPath context name the function name ns_uri the function namespace URI f the function implementation or NULL 0 in case of success, -1 in case of error int int xmlXPathRegisterVariable (xmlXPathContext *ctxt, const xmlChar *name, xmlXPathObject *value) xmlXPathRegisterVariable xmlXPathContext * ctxt const xmlChar * name xmlXPathObject * value Register a new variable value. If value is NULL it unregisters the variable ctxt the XPath context name the variable name value the variable value or NULL 0 in case of success, -1 in case of error int int xmlXPathRegisterVariableNS (xmlXPathContext *ctxt, const xmlChar *name, const xmlChar *ns_uri, xmlXPathObject *value) xmlXPathRegisterVariableNS xmlXPathContext * ctxt const xmlChar * name const xmlChar * ns_uri xmlXPathObject * value Register a new variable value. If value is NULL it unregisters the variable ctxt the XPath context name the variable name ns_uri the variable namespace URI value the variable value or NULL 0 in case of success, -1 in case of error xmlXPathFunction xmlXPathFunction xmlXPathFunctionLookup (xmlXPathContext *ctxt, const xmlChar *name) xmlXPathFunctionLookup xmlXPathContext * ctxt const xmlChar * name Search in the Function array of the context for the given function. ctxt the XPath context name the function name the xmlXPathFunction or NULL if not found xmlXPathFunction xmlXPathFunction xmlXPathFunctionLookupNS (xmlXPathContext *ctxt, const xmlChar *name, const xmlChar *ns_uri) xmlXPathFunctionLookupNS xmlXPathContext * ctxt const xmlChar * name const xmlChar * ns_uri Search in the Function array of the context for the given function. ctxt the XPath context name the function name ns_uri the function namespace URI the xmlXPathFunction or NULL if not found void void xmlXPathRegisteredFuncsCleanup (xmlXPathContext *ctxt) xmlXPathRegisteredFuncsCleanup xmlXPathContext * ctxt Cleanup the XPath context data associated to registered functions. ctxt the XPath context xmlXPathObject * xmlXPathObject * xmlXPathVariableLookup (xmlXPathContext *ctxt, const xmlChar *name) xmlXPathVariableLookup xmlXPathContext * ctxt const xmlChar * name Search in the Variable array of the context for the given variable value. ctxt the XPath context name the variable name a copy of the value or NULL if not found xmlXPathObject * xmlXPathObject * xmlXPathVariableLookupNS (xmlXPathContext *ctxt, const xmlChar *name, const xmlChar *ns_uri) xmlXPathVariableLookupNS xmlXPathContext * ctxt const xmlChar * name const xmlChar * ns_uri Search in the Variable array of the context for the given variable value. ctxt the XPath context name the variable name ns_uri the variable namespace URI the a copy of the value or NULL if not found void void xmlXPathRegisteredVariablesCleanup (xmlXPathContext *ctxt) xmlXPathRegisteredVariablesCleanup xmlXPathContext * ctxt Cleanup the XPath context data associated to registered variables. ctxt the XPath context xmlXPathParserContext * xmlXPathParserContext * xmlXPathNewParserContext (const xmlChar *str, xmlXPathContext *ctxt) xmlXPathNewParserContext const xmlChar * str xmlXPathContext * ctxt Utilities to extend XPath. Utilities to extend XPath. str the XPath expression ctxt the XPath context the xmlXPathParserContext just allocated. void void xmlXPathFreeParserContext (xmlXPathParserContext *ctxt) xmlXPathFreeParserContext xmlXPathParserContext * ctxt Free up an xmlXPathParserContext. ctxt the context to free xmlXPathObject * xmlXPathObject * xmlXPathValuePop (xmlXPathParserContext *ctxt) xmlXPathValuePop xmlXPathParserContext * ctxt Pops the top XPath object from the value stack. ctxt an XPath evaluation context the XPath object just removed int int xmlXPathValuePush (xmlXPathParserContext *ctxt, xmlXPathObject *value) xmlXPathValuePush xmlXPathParserContext * ctxt xmlXPathObject * value Pushes a new XPath object on top of the value stack. If value is NULL, a memory error is recorded in the parser context. The object is destroyed in case of error. ctxt an XPath evaluation context value the XPath object the number of items on the value stack, or -1 in case of error. xmlXPathObject * xmlXPathObject * xmlXPathNewString (const xmlChar *val) xmlXPathNewString const xmlChar * val Create a new xmlXPathObject of type string and of value val. val the xmlChar * value the newly created object. xmlXPathObject * xmlXPathObject * xmlXPathNewCString (const char *val) xmlXPathNewCString const char * val Create a new xmlXPathObject of type string and of value val. val the char * value the newly created object. xmlXPathObject * xmlXPathObject * xmlXPathWrapString (xmlChar *val) xmlXPathWrapString xmlChar * val Wraps the val string into an XPath object. Frees val in case of error. val the xmlChar * value the newly created object. xmlXPathObject * xmlXPathObject * xmlXPathWrapCString (char *val) xmlXPathWrapCString char * val Wraps a string into an XPath object. val the char * value the newly created object. xmlXPathObject * xmlXPathObject * xmlXPathNewFloat (double val) xmlXPathNewFloat double val Create a new xmlXPathObject of type double and of value val. val the double value the newly created object. xmlXPathObject * xmlXPathObject * xmlXPathNewBoolean (int val) xmlXPathNewBoolean int val Create a new xmlXPathObject of type boolean and of value val. val the boolean value the newly created object. xmlXPathObject * xmlXPathObject * xmlXPathNewNodeSet (xmlNode *val) xmlXPathNewNodeSet xmlNode * val Create a new xmlXPathObject of type NodeSet and initialize it with the single Node val. val the NodePtr value the newly created object. xmlXPathObject * xmlXPathObject * xmlXPathNewValueTree (xmlNode *val) xmlXPathNewValueTree xmlNode * val Create a new xmlXPathObject of type Value Tree (XSLT) and initialize it with the tree root val. val the NodePtr value the newly created object. int int xmlXPathNodeSetAdd (xmlNodeSet *cur, xmlNode *val) xmlXPathNodeSetAdd xmlNodeSet * cur xmlNode * val add a new xmlNode to an existing NodeSet cur the initial node set val a new xmlNode 0 in case of success, and -1 in case of error int int xmlXPathNodeSetAddUnique (xmlNodeSet *cur, xmlNode *val) xmlXPathNodeSetAddUnique xmlNodeSet * cur xmlNode * val add a new xmlNode to an existing NodeSet, optimized version when we are sure the node is not already in the set. cur the initial node set val a new xmlNode 0 in case of success and -1 in case of failure int int xmlXPathNodeSetAddNs (xmlNodeSet *cur, xmlNode *node, xmlNs *ns) xmlXPathNodeSetAddNs xmlNodeSet * cur xmlNode * node xmlNs * ns add a new namespace node to an existing NodeSet cur the initial node set node the hosting node ns a the namespace node 0 in case of success and -1 in case of error void void xmlXPathNodeSetSort (xmlNodeSet *set) xmlXPathNodeSetSort xmlNodeSet * set Sort the node set in document order. set the node set void void xmlXPathRoot (xmlXPathParserContext *ctxt) xmlXPathRoot xmlXPathParserContext * ctxt Initialize the context to the root of the document. ctxt the XPath Parser context void void xmlXPathEvalExpr (xmlXPathParserContext *ctxt) xmlXPathEvalExpr xmlXPathParserContext * ctxt Parse and evaluate an XPath expression in the given context, then push the result on the context stack. DeprecatedInternal function, don't use. ctxt the XPath Parser context xmlChar * xmlChar * xmlXPathParseName (xmlXPathParserContext *ctxt) xmlXPathParseName xmlXPathParserContext * ctxt parse an XML name ctxt the XPath Parser context the name or NULL xmlChar * xmlChar * xmlXPathParseNCName (xmlXPathParserContext *ctxt) xmlXPathParseNCName xmlXPathParserContext * ctxt Parse an XML non-colonized name. ctxt the XPath Parser context the nc name or NULL double double xmlXPathStringEvalNumber (const xmlChar *str) xmlXPathStringEvalNumber const xmlChar * str [30a] Float ::= Number ('e' Digits?)? [30] Number ::= Digits ('.' Digits?)? | '.' Digits [31] Digits ::= [0-9]+ Compile a Number in the string In complement of the Number expression, this function also handles negative values : '-' Number. str A string to scan the double value. int int xmlXPathEvaluatePredicateResult (xmlXPathParserContext *ctxt, xmlXPathObject *res) xmlXPathEvaluatePredicateResult xmlXPathParserContext * ctxt xmlXPathObject * res Evaluate a predicate result for the current node. A PredicateExpr is evaluated by evaluating the Expr and converting the result to a boolean. If the result is a number, the result will be converted to true if the number is equal to the position of the context node in the context node list (as returned by the position function) and will be converted to false otherwise; if the result is not a number, then the result will be converted as if by a call to the boolean function. ctxt the XPath Parser context res the Predicate Expression evaluation result 1 if predicate is true, 0 otherwise void void xmlXPathRegisterAllFunctions (xmlXPathContext *ctxt) xmlXPathRegisterAllFunctions xmlXPathContext * ctxt Registers all default XPath functions in this context. DeprecatedNo-op since 2.14.0. ctxt the XPath context xmlNodeSet * xmlNodeSet * xmlXPathNodeSetMerge (xmlNodeSet *val1, xmlNodeSet *val2) xmlXPathNodeSetMerge xmlNodeSet * val1 xmlNodeSet * val2 Merges two nodesets, all nodes from val2 are added to val1 if val1 is NULL, a new set is created and copied from val2. Frees val1 in case of error. val1 the first NodeSet or NULL val2 the second NodeSet val1 once extended or NULL in case of error. void void xmlXPathNodeSetDel (xmlNodeSet *cur, xmlNode *val) xmlXPathNodeSetDel xmlNodeSet * cur xmlNode * val Removes an xmlNode from an existing NodeSet. cur the initial node set val an xmlNode void void xmlXPathNodeSetRemove (xmlNodeSet *cur, int val) xmlXPathNodeSetRemove xmlNodeSet * cur int val Removes an entry from an existing NodeSet list. cur the initial node set val the index to remove xmlXPathObject * xmlXPathObject * xmlXPathNewNodeSetList (xmlNodeSet *val) xmlXPathNewNodeSetList xmlNodeSet * val Create a new xmlXPathObject of type NodeSet and initialize it with the Nodeset val. val an existing NodeSet the newly created object. xmlXPathObject * xmlXPathObject * xmlXPathWrapNodeSet (xmlNodeSet *val) xmlXPathWrapNodeSet xmlNodeSet * val Wrap the Nodeset val in a new xmlXPathObject. In case of error the node set is destroyed and NULL is returned. val the NodePtr value the newly created object. xmlXPathObject * xmlXPathObject * xmlXPathWrapExternal (void *val) xmlXPathWrapExternal void * val Wraps the val data into an XPath object. val the user data the newly created object. int int xmlXPathEqualValues (xmlXPathParserContext *ctxt) xmlXPathEqualValues xmlXPathParserContext * ctxt Implement the equal operation on XPath objects content: arg1 == arg2. ctxt the XPath Parser context 0 or 1 depending on the results of the test. int int xmlXPathNotEqualValues (xmlXPathParserContext *ctxt) xmlXPathNotEqualValues xmlXPathParserContext * ctxt Implement the equal operation on XPath objects content: arg1 == arg2. ctxt the XPath Parser context 0 or 1 depending on the results of the test. int int xmlXPathCompareValues (xmlXPathParserContext *ctxt, int inf, int strict) xmlXPathCompareValues xmlXPathParserContext * ctxt int inf int strict Implement the compare operation on XPath objects: arg1 < arg2 (1, 1, ... arg1 <= arg2 (1, 0, ... arg1 > arg2 (0, 1, ... arg1 >= arg2 (0, 0, ... When neither object to be compared is a node-set and the operator is <=, <, >=, >, then the objects are compared by converted both objects to numbers and comparing the numbers according to IEEE 754. The < comparison will be true if and only if the first number is less than the second number. The <= comparison will be true if and only if the first number is less than or equal to the second number. The > comparison will be true if and only if the first number is greater than the second number. The >= comparison will be true if and only if the first number is greater than or equal to the second number. ctxt the XPath Parser context inf less than (1) or greater than (0) strict is the comparison strict 1 if the comparison succeeded, 0 if it failed void void xmlXPathValueFlipSign (xmlXPathParserContext *ctxt) xmlXPathValueFlipSign xmlXPathParserContext * ctxt Implement the unary - operation on an XPath object The numeric operators convert their operands to numbers as if by calling the number function. ctxt the XPath Parser context void void xmlXPathAddValues (xmlXPathParserContext *ctxt) xmlXPathAddValues xmlXPathParserContext * ctxt Implement the add operation on XPath objects: The numeric operators convert their operands to numbers as if by calling the number function. ctxt the XPath Parser context void void xmlXPathSubValues (xmlXPathParserContext *ctxt) xmlXPathSubValues xmlXPathParserContext * ctxt Implement the subtraction operation on XPath objects: The numeric operators convert their operands to numbers as if by calling the number function. ctxt the XPath Parser context void void xmlXPathMultValues (xmlXPathParserContext *ctxt) xmlXPathMultValues xmlXPathParserContext * ctxt Implement the multiply operation on XPath objects: The numeric operators convert their operands to numbers as if by calling the number function. ctxt the XPath Parser context void void xmlXPathDivValues (xmlXPathParserContext *ctxt) xmlXPathDivValues xmlXPathParserContext * ctxt Implement the div operation on XPath objects arg1 / arg2. The numeric operators convert their operands to numbers as if by calling the number function. ctxt the XPath Parser context void void xmlXPathModValues (xmlXPathParserContext *ctxt) xmlXPathModValues xmlXPathParserContext * ctxt Implement the mod operation on XPath objects: arg1 / arg2 The numeric operators convert their operands to numbers as if by calling the number function. ctxt the XPath Parser context int int xmlXPathIsNodeType (const xmlChar *name) xmlXPathIsNodeType const xmlChar * name Is the name given a NodeType one. [38] NodeType ::= 'comment' | 'text' | 'processing-instruction' | 'node' name a name string 1 if true 0 otherwise xmlNode * xmlNode * xmlXPathNextSelf (xmlXPathParserContext *ctxt, xmlNode *cur) xmlXPathNextSelf xmlXPathParserContext * ctxt xmlNode * cur Traversal function for the "self" direction The self axis contains just the context node itself. ctxt the XPath Parser context cur the current node in the traversal the next element following that axis xmlNode * xmlNode * xmlXPathNextChild (xmlXPathParserContext *ctxt, xmlNode *cur) xmlXPathNextChild xmlXPathParserContext * ctxt xmlNode * cur Traversal function for the "child" direction The child axis contains the children of the context node in document order. ctxt the XPath Parser context cur the current node in the traversal the next element following that axis xmlNode * xmlNode * xmlXPathNextDescendant (xmlXPathParserContext *ctxt, xmlNode *cur) xmlXPathNextDescendant xmlXPathParserContext * ctxt xmlNode * cur Traversal function for the "descendant" direction the descendant axis contains the descendants of the context node in document order; a descendant is a child or a child of a child and so on. ctxt the XPath Parser context cur the current node in the traversal the next element following that axis xmlNode * xmlNode * xmlXPathNextDescendantOrSelf (xmlXPathParserContext *ctxt, xmlNode *cur) xmlXPathNextDescendantOrSelf xmlXPathParserContext * ctxt xmlNode * cur Traversal function for the "descendant-or-self" direction the descendant-or-self axis contains the context node and the descendants of the context node in document order; thus the context node is the first node on the axis, and the first child of the context node is the second node on the axis. ctxt the XPath Parser context cur the current node in the traversal the next element following that axis xmlNode * xmlNode * xmlXPathNextParent (xmlXPathParserContext *ctxt, xmlNode *cur) xmlXPathNextParent xmlXPathParserContext * ctxt xmlNode * cur Traversal function for the "parent" direction The parent axis contains the parent of the context node, if there is one. ctxt the XPath Parser context cur the current node in the traversal the next element following that axis xmlNode * xmlNode * xmlXPathNextAncestorOrSelf (xmlXPathParserContext *ctxt, xmlNode *cur) xmlXPathNextAncestorOrSelf xmlXPathParserContext * ctxt xmlNode * cur Traversal function for the "ancestor-or-self" direction he ancestor-or-self axis contains the context node and ancestors of the context node in reverse document order; thus the context node is the first node on the axis, and the context node's parent the second; parent here is defined the same as with the parent axis. ctxt the XPath Parser context cur the current node in the traversal the next element following that axis xmlNode * xmlNode * xmlXPathNextFollowingSibling (xmlXPathParserContext *ctxt, xmlNode *cur) xmlXPathNextFollowingSibling xmlXPathParserContext * ctxt xmlNode * cur Traversal function for the "following-sibling" direction The following-sibling axis contains the following siblings of the context node in document order. ctxt the XPath Parser context cur the current node in the traversal the next element following that axis xmlNode * xmlNode * xmlXPathNextFollowing (xmlXPathParserContext *ctxt, xmlNode *cur) xmlXPathNextFollowing xmlXPathParserContext * ctxt xmlNode * cur Traversal function for the "following" direction The following axis contains all nodes in the same document as the context node that are after the context node in document order, excluding any descendants and excluding attribute nodes and namespace nodes; the nodes are ordered in document order. ctxt the XPath Parser context cur the current node in the traversal the next element following that axis xmlNode * xmlNode * xmlXPathNextNamespace (xmlXPathParserContext *ctxt, xmlNode *cur) xmlXPathNextNamespace xmlXPathParserContext * ctxt xmlNode * cur Traversal function for the "namespace" direction the namespace axis contains the namespace nodes of the context node; the order of nodes on this axis is implementation-defined; the axis will be empty unless the context node is an element. We keep the XML namespace node at the end of the list. ctxt the XPath Parser context cur the current attribute in the traversal the next element following that axis xmlNode * xmlNode * xmlXPathNextAttribute (xmlXPathParserContext *ctxt, xmlNode *cur) xmlXPathNextAttribute xmlXPathParserContext * ctxt xmlNode * cur Traversal function for the "attribute" direction TODO: support DTD inherited default attributes. ctxt the XPath Parser context cur the current attribute in the traversal the next element following that axis xmlNode * xmlNode * xmlXPathNextPreceding (xmlXPathParserContext *ctxt, xmlNode *cur) xmlXPathNextPreceding xmlXPathParserContext * ctxt xmlNode * cur Traversal function for the "preceding" direction the preceding axis contains all nodes in the same document as the context node that are before the context node in document order, excluding any ancestors and excluding attribute nodes and namespace nodes; the nodes are ordered in reverse document order. ctxt the XPath Parser context cur the current node in the traversal the next element following that axis xmlNode * xmlNode * xmlXPathNextAncestor (xmlXPathParserContext *ctxt, xmlNode *cur) xmlXPathNextAncestor xmlXPathParserContext * ctxt xmlNode * cur Traversal function for the "ancestor" direction the ancestor axis contains the ancestors of the context node; the ancestors of the context node consist of the parent of context node and the parent's parent and so on; the nodes are ordered in reverse document order; thus the parent is the first node on the axis, and the parent's parent is the second node on the axis. ctxt the XPath Parser context cur the current node in the traversal the next element following that axis xmlNode * xmlNode * xmlXPathNextPrecedingSibling (xmlXPathParserContext *ctxt, xmlNode *cur) xmlXPathNextPrecedingSibling xmlXPathParserContext * ctxt xmlNode * cur Traversal function for the "preceding-sibling" direction The preceding-sibling axis contains the preceding siblings of the context node in reverse document order; the first preceding sibling is first on the axis; the sibling preceding that node is the second on the axis and so on. ctxt the XPath Parser context cur the current node in the traversal the next element following that axis void void xmlXPathLastFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathLastFunction xmlXPathParserContext * ctxt int nargs Implement the last() XPath function number last() The last function returns the number of nodes in the context node list. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathPositionFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathPositionFunction xmlXPathParserContext * ctxt int nargs Implement the position() XPath function number position() The position function returns the position of the context node in the context node list. The first position is 1, and so the last position will be equal to last(). ctxt the XPath Parser context nargs the number of arguments void void xmlXPathCountFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathCountFunction xmlXPathParserContext * ctxt int nargs Implement the count() XPath function number count(node-set). ctxt the XPath Parser context nargs the number of arguments void void xmlXPathIdFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathIdFunction xmlXPathParserContext * ctxt int nargs Implement the id() XPath function node-set id(object) The id function selects elements by their unique ID (see [5.2.1 Unique IDs]). When the argument to id is of type node-set, then the result is the union of the result of applying id to the string value of each of the nodes in the argument node-set. When the argument to id is of any other type, the argument is converted to a string as if by a call to the string function; the string is split into a whitespace-separated list of tokens (whitespace is any sequence of characters matching the production S); the result is a node-set containing the elements in the same document as the context node that have a unique ID equal to any of the tokens in the list. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathLocalNameFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathLocalNameFunction xmlXPathParserContext * ctxt int nargs Implement the local-name() XPath function string local-name(node-set?) The local-name function returns a string containing the local part of the name of the node in the argument node-set that is first in document order. If the node-set is empty or the first node has no name, an empty string is returned. If the argument is omitted it defaults to the context node. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathNamespaceURIFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathNamespaceURIFunction xmlXPathParserContext * ctxt int nargs Implement the namespace-uri() XPath function string namespace-uri(node-set?) The namespace-uri function returns a string containing the namespace URI of the expanded name of the node in the argument node-set that is first in document order. If the node-set is empty, the first node has no name, or the expanded name has no namespace URI, an empty string is returned. If the argument is omitted it defaults to the context node. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathStringFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathStringFunction xmlXPathParserContext * ctxt int nargs Implement the string() XPath function string string(object?) The string function converts an object to a string as follows: A node-set is converted to a string by returning the value of the node in the node-set that is first in document order. If the node-set is empty, an empty string is returned. A number is converted to a string as follows NaN is converted to the string NaN positive zero is converted to the string 0 negative zero is converted to the string 0 positive infinity is converted to the string Infinity negative infinity is converted to the string -Infinity if the number is an integer, the number is represented in decimal form as a Number with no decimal point and no leading zeros, preceded by a minus sign (-) if the number is negative otherwise, the number is represented in decimal form as a Number including a decimal point with at least one digit before the decimal point and at least one digit after the decimal point, preceded by a minus sign (-) if the number is negative; there must be no leading zeros before the decimal point apart possibly from the one required digit immediately before the decimal point; beyond the one required digit after the decimal point there must be as many, but only as many, more digits as are needed to uniquely distinguish the number from all other IEEE 754 numeric values. The boolean false value is converted to the string false. The boolean true value is converted to the string true. If the argument is omitted, it defaults to a node-set with the context node as its only member. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathStringLengthFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathStringLengthFunction xmlXPathParserContext * ctxt int nargs Implement the string-length() XPath function number string-length(string?) The string-length returns the number of characters in the string (see [3.6 Strings]). If the argument is omitted, it defaults to the context node converted to a string, in other words the value of the context node. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathConcatFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathConcatFunction xmlXPathParserContext * ctxt int nargs Implement the concat() XPath function string concat(string, string, string*) The concat function returns the concatenation of its arguments. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathContainsFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathContainsFunction xmlXPathParserContext * ctxt int nargs Implement the contains() XPath function boolean contains(string, string) The contains function returns true if the first argument string contains the second argument string, and otherwise returns false. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathStartsWithFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathStartsWithFunction xmlXPathParserContext * ctxt int nargs Implement the starts-with() XPath function boolean starts-with(string, string) The starts-with function returns true if the first argument string starts with the second argument string, and otherwise returns false. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathSubstringFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathSubstringFunction xmlXPathParserContext * ctxt int nargs Implement the substring() XPath function string substring(string, number, number?) The substring function returns the substring of the first argument starting at the position specified in the second argument with length specified in the third argument. For example, substring("12345",2,3) returns "234". If the third argument is not specified, it returns the substring starting at the position specified in the second argument and continuing to the end of the string. For example, substring("12345",2) returns "2345". More precisely, each character in the string (see [3.6 Strings]) is considered to have a numeric position: the position of the first character is 1, the position of the second character is 2 and so on. The returned substring contains those characters for which the position of the character is greater than or equal to the second argument and, if the third argument is specified, less than the sum of the second and third arguments; the comparisons and addition used for the above follow the standard IEEE 754 rules. Thus: substring("12345", 1.5, 2.6) returns "234" substring("12345", 0, 3) returns "12" substring("12345", 0 div 0, 3) returns "" substring("12345", 1, 0 div 0) returns "" substring("12345", -42, 1 div 0) returns "12345" substring("12345", -1 div 0, 1 div 0) returns "" ctxt the XPath Parser context nargs the number of arguments void void xmlXPathSubstringBeforeFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathSubstringBeforeFunction xmlXPathParserContext * ctxt int nargs Implement the substring-before() XPath function string substring-before(string, string) The substring-before function returns the substring of the first argument string that precedes the first occurrence of the second argument string in the first argument string, or the empty string if the first argument string does not contain the second argument string. For example, substring-before("1999/04/01","/") returns 1999. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathSubstringAfterFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathSubstringAfterFunction xmlXPathParserContext * ctxt int nargs Implement the substring-after() XPath function string substring-after(string, string) The substring-after function returns the substring of the first argument string that follows the first occurrence of the second argument string in the first argument string, or the empty string if the first argument string does not contain the second argument string. For example, substring-after("1999/04/01","/") returns 04/01, and substring-after("1999/04/01","19") returns 99/04/01. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathNormalizeFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathNormalizeFunction xmlXPathParserContext * ctxt int nargs Implement the normalize-space() XPath function string normalize-space(string?) The normalize-space function returns the argument string with white space normalized by stripping leading and trailing whitespace and replacing sequences of whitespace characters by a single space. Whitespace characters are the same allowed by the S production in XML. If the argument is omitted, it defaults to the context node converted to a string, in other words the value of the context node. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathTranslateFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathTranslateFunction xmlXPathParserContext * ctxt int nargs Implement the translate() XPath function string translate(string, string, string) The translate function returns the first argument string with occurrences of characters in the second argument string replaced by the character at the corresponding position in the third argument string. For example, translate("bar","abc","ABC") returns the string BAr. If there is a character in the second argument string with no character at a corresponding position in the third argument string (because the second argument string is longer than the third argument string), then occurrences of that character in the first argument string are removed. For example, translate("--aaa--","abc-","ABC") returns "AAA". If a character occurs more than once in second argument string, then the first occurrence determines the replacement character. If the third argument string is longer than the second argument string, then excess characters are ignored. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathNotFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathNotFunction xmlXPathParserContext * ctxt int nargs Implement the not() XPath function boolean not(boolean) The not function returns true if its argument is false, and false otherwise. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathTrueFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathTrueFunction xmlXPathParserContext * ctxt int nargs Implement the true() XPath function boolean true(). ctxt the XPath Parser context nargs the number of arguments void void xmlXPathFalseFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathFalseFunction xmlXPathParserContext * ctxt int nargs Implement the false() XPath function boolean false(). ctxt the XPath Parser context nargs the number of arguments void void xmlXPathLangFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathLangFunction xmlXPathParserContext * ctxt int nargs Implement the lang() XPath function boolean lang(string) The lang function returns true or false depending on whether the language of the context node as specified by xml:lang attributes is the same as or is a sublanguage of the language specified by the argument string. The language of the context node is determined by the value of the xml:lang attribute on the context node, or, if the context node has no xml:lang attribute, by the value of the xml:lang attribute on the nearest ancestor of the context node that has an xml:lang attribute. If there is no such attribute, then lang returns false. If there is such an attribute, then lang returns true if the attribute value is equal to the argument ignoring case, or if there is some suffix starting with - such that the attribute value is equal to the argument ignoring that suffix of the attribute value and ignoring case. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathNumberFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathNumberFunction xmlXPathParserContext * ctxt int nargs Implement the number() XPath function number number(object?). ctxt the XPath Parser context nargs the number of arguments void void xmlXPathSumFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathSumFunction xmlXPathParserContext * ctxt int nargs Implement the sum() XPath function number sum(node-set) The sum function returns the sum of the values of the nodes in the argument node-set. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathFloorFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathFloorFunction xmlXPathParserContext * ctxt int nargs Implement the floor() XPath function number floor(number) The floor function returns the largest (closest to positive infinity) number that is not greater than the argument and that is an integer. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathCeilingFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathCeilingFunction xmlXPathParserContext * ctxt int nargs Implement the ceiling() XPath function number ceiling(number) The ceiling function returns the smallest (closest to negative infinity) number that is not less than the argument and that is an integer. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathRoundFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathRoundFunction xmlXPathParserContext * ctxt int nargs Implement the round() XPath function number round(number) The round function returns the number that is closest to the argument and that is an integer. If there are two such numbers, then the one that is closest to positive infinity is returned. ctxt the XPath Parser context nargs the number of arguments void void xmlXPathBooleanFunction (xmlXPathParserContext *ctxt, int nargs) xmlXPathBooleanFunction xmlXPathParserContext * ctxt int nargs Implement the boolean() XPath function boolean boolean(object) The boolean function converts its argument to a boolean as follows: a number is true if and only if it is neither positive or negative zero nor NaN a node-set is true if and only if it is non-empty a string is true if and only if its length is non-zero ctxt the XPath Parser context nargs the number of arguments void void xmlXPathNodeSetFreeNs (xmlNs *ns) xmlXPathNodeSetFreeNs xmlNs * ns Really internal functions. Really internal functions. In a node set the namespace nodes are duplicated and the next pointer is set to the parent node in the XPath semantic. Check if such a node needs to be freed ns the XPath namespace node found in a nodeset. internal interfaces for XML Path Language implementation internal interfaces for XML Path Language implementation used to build new modules on top of XPath like XPointer and XSLT See Copyright for the status of this software. Daniel Veillard