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libxml2
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internal interfaces for XML Path Language implementation More...
Macros | |
| #define | valuePush xmlXPathValuePush |
| Push a value on the stack. | |
| #define | valuePop xmlXPathValuePop |
| Pop a value from the stack. | |
| #define | xmlXPathSetError(ctxt, err) |
| Raises an error. | |
| #define | xmlXPathSetArityError(ctxt) |
| Raises an XPATH_INVALID_ARITY error. | |
| #define | xmlXPathSetTypeError(ctxt) |
| Raises an XPATH_INVALID_TYPE error. | |
| #define | xmlXPathGetError(ctxt) |
| Get the error code of an XPath context. | |
| #define | xmlXPathCheckError(ctxt) |
| Check if an XPath error was raised. | |
| #define | xmlXPathGetDocument(ctxt) |
| Get the document of an XPath context. | |
| #define | xmlXPathGetContextNode(ctxt) |
| Get the context node of an XPath context. | |
| #define | xmlXPathReturnBoolean(ctxt, val) |
| Pushes the boolean val on the context stack. | |
| #define | xmlXPathReturnTrue(ctxt) |
| Pushes true on the context stack. | |
| #define | xmlXPathReturnFalse(ctxt) |
| Pushes false on the context stack. | |
| #define | xmlXPathReturnNumber(ctxt, val) |
| Pushes the double val on the context stack. | |
| #define | xmlXPathReturnString(ctxt, str) |
| Pushes the string str on the context stack. | |
| #define | xmlXPathReturnEmptyString(ctxt) |
| Pushes an empty string on the stack. | |
| #define | xmlXPathReturnNodeSet(ctxt, ns) |
| Pushes the node-set ns on the context stack. | |
| #define | xmlXPathReturnEmptyNodeSet(ctxt) |
| Pushes an empty node-set on the context stack. | |
| #define | xmlXPathReturnExternal(ctxt, val) |
| Pushes user data on the context stack. | |
| #define | xmlXPathStackIsNodeSet(ctxt) |
| Check if the current value on the XPath stack is a node set or an XSLT value tree. | |
| #define | xmlXPathStackIsExternal(ctxt) |
| Checks if the current value on the XPath stack is an external object. | |
| #define | xmlXPathEmptyNodeSet(ns) |
| Empties a node-set. | |
| #define | CHECK_ERROR if (ctxt->error != XPATH_EXPRESSION_OK) return |
| Macro to return from the function if an XPath error was detected. | |
| #define | CHECK_ERROR0 if (ctxt->error != XPATH_EXPRESSION_OK) return(0) |
| Macro to return 0 from the function if an XPath error was detected. | |
| #define | XP_ERROR(X) |
| Macro to raise an XPath error and return. | |
| #define | XP_ERROR0(X) |
| Macro to raise an XPath error and return 0. | |
| #define | CHECK_TYPE(typeval) |
| Macro to check that the value on top of the XPath stack is of a given type. | |
| #define | CHECK_TYPE0(typeval) |
| Macro to check that the value on top of the XPath stack is of a given type. | |
| #define | CHECK_ARITY(x) |
| Macro to check that the number of args passed to an XPath function matches. | |
| #define | CAST_TO_STRING |
| Macro to try to cast the value on the top of the XPath stack to a string. | |
| #define | CAST_TO_NUMBER |
| Macro to try to cast the value on the top of the XPath stack to a number. | |
| #define | CAST_TO_BOOLEAN |
| Macro to try to cast the value on the top of the XPath stack to a boolean. | |
Functions | |
| int | xmlXPathPopBoolean (xmlXPathParserContext *ctxt) |
| Pops a boolean from the stack, handling conversion if needed. | |
| double | xmlXPathPopNumber (xmlXPathParserContext *ctxt) |
| Pops a number from the stack, handling conversion if needed. | |
| xmlChar * | xmlXPathPopString (xmlXPathParserContext *ctxt) |
| Pops a string from the stack, handling conversion if needed. | |
| xmlNodeSet * | xmlXPathPopNodeSet (xmlXPathParserContext *ctxt) |
| Pops a node-set from the stack, handling conversion if needed. | |
| void * | xmlXPathPopExternal (xmlXPathParserContext *ctxt) |
| Pops an external object from the stack, handling conversion if needed. | |
| void | xmlXPathRegisterVariableLookup (xmlXPathContext *ctxt, xmlXPathVariableLookupFunc f, void *data) |
| register an external mechanism to do variable lookup | |
| void | xmlXPathRegisterFuncLookup (xmlXPathContext *ctxt, xmlXPathFuncLookupFunc f, void *funcCtxt) |
| Registers an external mechanism to do function lookup. | |
| void | xmlXPatherror (xmlXPathParserContext *ctxt, const char *file, int line, int no) |
| Formats an error message. | |
| void | xmlXPathErr (xmlXPathParserContext *ctxt, int error) |
| Handle an XPath error. | |
| void | xmlXPathDebugDumpObject (FILE *output, xmlXPathObject *cur, int depth) |
| Dump the content of the object for debugging purposes. | |
| void | xmlXPathDebugDumpCompExpr (FILE *output, xmlXPathCompExpr *comp, int depth) |
| Dumps the tree of the compiled XPath expression. | |
| int | xmlXPathNodeSetContains (xmlNodeSet *cur, xmlNode *val) |
| NodeSet handling. | |
| xmlNodeSet * | xmlXPathDifference (xmlNodeSet *nodes1, xmlNodeSet *nodes2) |
| Implements the EXSLT - Sets difference() function: node-set set:difference (node-set, node-set) | |
| xmlNodeSet * | xmlXPathIntersection (xmlNodeSet *nodes1, xmlNodeSet *nodes2) |
| Implements the EXSLT - Sets intersection() function: node-set set:intersection (node-set, node-set) | |
| xmlNodeSet * | xmlXPathDistinctSorted (xmlNodeSet *nodes) |
| Implements the EXSLT - Sets distinct() function: node-set set:distinct (node-set) | |
| xmlNodeSet * | 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. | |
| int | xmlXPathHasSameNodes (xmlNodeSet *nodes1, xmlNodeSet *nodes2) |
| Implements the EXSLT - Sets has-same-nodes function: boolean set:has-same-node(node-set, node-set) | |
| xmlNodeSet * | xmlXPathNodeLeadingSorted (xmlNodeSet *nodes, xmlNode *node) |
| Implements the EXSLT - Sets leading() function: node-set set:leading (node-set, node-set) | |
| xmlNodeSet * | xmlXPathLeadingSorted (xmlNodeSet *nodes1, xmlNodeSet *nodes2) |
| Implements the EXSLT - Sets leading() function: node-set set:leading (node-set, node-set) | |
| xmlNodeSet * | 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. | |
| xmlNodeSet * | 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. | |
| xmlNodeSet * | xmlXPathNodeTrailingSorted (xmlNodeSet *nodes, xmlNode *node) |
| Implements the EXSLT - Sets trailing() function: node-set set:trailing (node-set, node-set) | |
| xmlNodeSet * | xmlXPathTrailingSorted (xmlNodeSet *nodes1, xmlNodeSet *nodes2) |
| Implements the EXSLT - Sets trailing() function: node-set set:trailing (node-set, node-set) | |
| xmlNodeSet * | 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. | |
| xmlNodeSet * | 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. | |
| int | xmlXPathRegisterNs (xmlXPathContext *ctxt, const xmlChar *prefix, const xmlChar *ns_uri) |
| Extending a context. | |
| const xmlChar * | 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. | |
| void | xmlXPathRegisteredNsCleanup (xmlXPathContext *ctxt) |
| Cleanup the XPath context data associated to registered variables. | |
| int | xmlXPathRegisterFunc (xmlXPathContext *ctxt, const xmlChar *name, xmlXPathFunction f) |
| Register a new function. | |
| int | xmlXPathRegisterFuncNS (xmlXPathContext *ctxt, const xmlChar *name, const xmlChar *ns_uri, xmlXPathFunction f) |
| Register a new function. | |
| int | xmlXPathRegisterVariable (xmlXPathContext *ctxt, const xmlChar *name, xmlXPathObject *value) |
| Register a new variable value. | |
| int | xmlXPathRegisterVariableNS (xmlXPathContext *ctxt, const xmlChar *name, const xmlChar *ns_uri, xmlXPathObject *value) |
| Register a new variable value. | |
| xmlXPathFunction | xmlXPathFunctionLookup (xmlXPathContext *ctxt, const xmlChar *name) |
| Search in the Function array of the context for the given function. | |
| xmlXPathFunction | xmlXPathFunctionLookupNS (xmlXPathContext *ctxt, const xmlChar *name, const xmlChar *ns_uri) |
| Search in the Function array of the context for the given function. | |
| void | xmlXPathRegisteredFuncsCleanup (xmlXPathContext *ctxt) |
| Cleanup the XPath context data associated to registered functions. | |
| xmlXPathObject * | xmlXPathVariableLookup (xmlXPathContext *ctxt, const xmlChar *name) |
| Search in the Variable array of the context for the given variable value. | |
| xmlXPathObject * | xmlXPathVariableLookupNS (xmlXPathContext *ctxt, const xmlChar *name, const xmlChar *ns_uri) |
| Search in the Variable array of the context for the given variable value. | |
| void | xmlXPathRegisteredVariablesCleanup (xmlXPathContext *ctxt) |
| Cleanup the XPath context data associated to registered variables. | |
| xmlXPathParserContext * | xmlXPathNewParserContext (const xmlChar *str, xmlXPathContext *ctxt) |
| Utilities to extend XPath. | |
| void | xmlXPathFreeParserContext (xmlXPathParserContext *ctxt) |
| Free up an xmlXPathParserContext. | |
| xmlXPathObject * | xmlXPathValuePop (xmlXPathParserContext *ctxt) |
| Pops the top XPath object from the value stack. | |
| int | xmlXPathValuePush (xmlXPathParserContext *ctxt, xmlXPathObject *value) |
| Pushes a new XPath object on top of the value stack. | |
| xmlXPathObject * | xmlXPathNewString (const xmlChar *val) |
| Create a new xmlXPathObject of type string and of value val | |
| xmlXPathObject * | xmlXPathNewCString (const char *val) |
| Create a new xmlXPathObject of type string and of value val | |
| xmlXPathObject * | xmlXPathWrapString (xmlChar *val) |
| Wraps the val string into an XPath object. | |
| xmlXPathObject * | xmlXPathWrapCString (char *val) |
| Wraps a string into an XPath object. | |
| xmlXPathObject * | xmlXPathNewFloat (double val) |
| Create a new xmlXPathObject of type double and of value val | |
| xmlXPathObject * | xmlXPathNewBoolean (int val) |
| Create a new xmlXPathObject of type boolean and of value val | |
| xmlXPathObject * | xmlXPathNewNodeSet (xmlNode *val) |
| Create a new xmlXPathObject of type NodeSet and initialize it with the single Node val | |
| xmlXPathObject * | xmlXPathNewValueTree (xmlNode *val) |
| Create a new xmlXPathObject of type Value Tree (XSLT) and initialize it with the tree root val | |
| int | xmlXPathNodeSetAdd (xmlNodeSet *cur, xmlNode *val) |
| add a new xmlNode to an existing NodeSet | |
| int | 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. | |
| int | xmlXPathNodeSetAddNs (xmlNodeSet *cur, xmlNode *node, xmlNs *ns) |
| add a new namespace node to an existing NodeSet | |
| void | xmlXPathNodeSetSort (xmlNodeSet *set) |
| Sort the node set in document order. | |
| void | xmlXPathRoot (xmlXPathParserContext *ctxt) |
| Initialize the context to the root of the document. | |
| void | xmlXPathEvalExpr (xmlXPathParserContext *ctxt) |
| Parse and evaluate an XPath expression in the given context, then push the result on the context stack. | |
| xmlChar * | xmlXPathParseName (xmlXPathParserContext *ctxt) |
| parse an XML name | |
| xmlChar * | xmlXPathParseNCName (xmlXPathParserContext *ctxt) |
| Parse an XML non-colonized name. | |
| double | xmlXPathStringEvalNumber (const xmlChar *str) |
| [30a] Float ::= Number ('e' Digits?)? | |
| int | xmlXPathEvaluatePredicateResult (xmlXPathParserContext *ctxt, xmlXPathObject *res) |
| Evaluate a predicate result for the current node. | |
| void | xmlXPathRegisterAllFunctions (xmlXPathContext *ctxt) |
| Registers all default XPath functions in this context. | |
| xmlNodeSet * | 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 | |
| void | xmlXPathNodeSetDel (xmlNodeSet *cur, xmlNode *val) |
| Removes an xmlNode from an existing NodeSet. | |
| void | xmlXPathNodeSetRemove (xmlNodeSet *cur, int val) |
| Removes an entry from an existing NodeSet list. | |
| xmlXPathObject * | xmlXPathNewNodeSetList (xmlNodeSet *val) |
| Create a new xmlXPathObject of type NodeSet and initialize it with the Nodeset val | |
| xmlXPathObject * | xmlXPathWrapNodeSet (xmlNodeSet *val) |
| Wrap the Nodeset val in a new xmlXPathObject. | |
| xmlXPathObject * | xmlXPathWrapExternal (void *val) |
| Wraps the val data into an XPath object. | |
| int | xmlXPathEqualValues (xmlXPathParserContext *ctxt) |
| Implement the equal operation on XPath objects content: arg1 == arg2 | |
| int | xmlXPathNotEqualValues (xmlXPathParserContext *ctxt) |
| Implement the equal operation on XPath objects content: arg1 == arg2 | |
| int | 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, ... | |
| void | 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. | |
| void | 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. | |
| void | 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. | |
| void | 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. | |
| void | xmlXPathDivValues (xmlXPathParserContext *ctxt) |
| Implement the div operation on XPath objects arg1 / arg2. | |
| void | 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. | |
| int | xmlXPathIsNodeType (const xmlChar *name) |
| Is the name given a NodeType one. | |
| xmlNode * | xmlXPathNextSelf (xmlXPathParserContext *ctxt, xmlNode *cur) |
| Traversal function for the "self" direction The self axis contains just the context node itself. | |
| xmlNode * | xmlXPathNextChild (xmlXPathParserContext *ctxt, xmlNode *cur) |
| Traversal function for the "child" direction The child axis contains the children of the context node in document order. | |
| xmlNode * | 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. | |
| xmlNode * | 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. | |
| xmlNode * | 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. | |
| xmlNode * | 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. | |
| xmlNode * | 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. | |
| xmlNode * | 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. | |
| xmlNode * | 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. | |
| xmlNode * | xmlXPathNextAttribute (xmlXPathParserContext *ctxt, xmlNode *cur) |
| Traversal function for the "attribute" direction TODO: support DTD inherited default attributes. | |
| xmlNode * | 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. | |
| xmlNode * | 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. | |
| xmlNode * | 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. | |
| void | 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. | |
| void | 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. | |
| void | xmlXPathCountFunction (xmlXPathParserContext *ctxt, int nargs) |
| Implement the count() XPath function number count(node-set) | |
| void | 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]). | |
| void | 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. | |
| void | 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. | |
| void | xmlXPathStringFunction (xmlXPathParserContext *ctxt, int nargs) |
| Implement the string() XPath function string string(object?) The string function converts an object to a string as follows: | |
| void | 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]). | |
| void | xmlXPathConcatFunction (xmlXPathParserContext *ctxt, int nargs) |
| Implement the concat() XPath function string concat(string, string, string*) The concat function returns the concatenation of its arguments. | |
| void | 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. | |
| void | 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. | |
| void | 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. | |
| void | 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. | |
| void | 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. | |
| void | 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. | |
| void | 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. | |
| void | 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. | |
| void | xmlXPathTrueFunction (xmlXPathParserContext *ctxt, int nargs) |
| Implement the true() XPath function boolean true() | |
| void | xmlXPathFalseFunction (xmlXPathParserContext *ctxt, int nargs) |
| Implement the false() XPath function boolean false() | |
| void | 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. | |
| void | xmlXPathNumberFunction (xmlXPathParserContext *ctxt, int nargs) |
| Implement the number() XPath function number number(object?) | |
| void | 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. | |
| void | 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. | |
| void | 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. | |
| void | 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. | |
| void | xmlXPathBooleanFunction (xmlXPathParserContext *ctxt, int nargs) |
| Implement the boolean() XPath function boolean boolean(object) The boolean function converts its argument to a boolean as follows: | |
| void | xmlXPathNodeSetFreeNs (xmlNs *ns) |
| Really internal functions. | |
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
| #define CHECK_ARITY | ( | x | ) |
Macro to check that the number of args passed to an XPath function matches.
| x | the number of expected args |
| #define CHECK_TYPE | ( | typeval | ) |
Macro to check that the value on top of the XPath stack is of a given type.
| typeval | the XPath type |
| #define CHECK_TYPE0 | ( | typeval | ) |
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 |
| #define valuePop xmlXPathValuePop |
Pop a value from the stack.
| #define valuePush xmlXPathValuePush |
Push a value on the stack.
| #define xmlXPathCheckError | ( | ctxt | ) |
Check if an XPath error was raised.
| ctxt | an XPath parser context |
| #define xmlXPathEmptyNodeSet | ( | ns | ) |
Empties a node-set.
| ns | a node-set |
| #define xmlXPathGetContextNode | ( | ctxt | ) |
Get the context node of an XPath context.
| ctxt | an XPath parser context |
| #define xmlXPathGetDocument | ( | ctxt | ) |
Get the document of an XPath context.
| ctxt | an XPath parser context |
| #define xmlXPathGetError | ( | ctxt | ) |
Get the error code of an XPath context.
| ctxt | an XPath parser context |
| #define xmlXPathReturnBoolean | ( | ctxt, | |
| val ) |
Pushes the boolean val on the context stack.
| ctxt | an XPath parser context |
| val | a boolean |
| #define xmlXPathReturnEmptyNodeSet | ( | ctxt | ) |
Pushes an empty node-set on the context stack.
| ctxt | an XPath parser context |
| #define xmlXPathReturnEmptyString | ( | ctxt | ) |
Pushes an empty string on the stack.
| ctxt | an XPath parser context |
| #define xmlXPathReturnExternal | ( | ctxt, | |
| val ) |
Pushes user data on the context stack.
| ctxt | an XPath parser context |
| val | user data |
| #define xmlXPathReturnFalse | ( | ctxt | ) |
Pushes false on the context stack.
| ctxt | an XPath parser context |
| #define xmlXPathReturnNodeSet | ( | ctxt, | |
| ns ) |
Pushes the node-set ns on the context stack.
| ctxt | an XPath parser context |
| ns | a node-set |
| #define xmlXPathReturnNumber | ( | ctxt, | |
| val ) |
Pushes the double val on the context stack.
| ctxt | an XPath parser context |
| val | a double |
| #define xmlXPathReturnString | ( | ctxt, | |
| str ) |
Pushes the string str on the context stack.
| ctxt | an XPath parser context |
| str | a string |
| #define xmlXPathReturnTrue | ( | ctxt | ) |
Pushes true on the context stack.
| ctxt | an XPath parser context |
| #define xmlXPathSetArityError | ( | ctxt | ) |
Raises an XPATH_INVALID_ARITY error.
| ctxt | an XPath parser context |
| #define xmlXPathSetError | ( | ctxt, | |
| err ) |
Raises an error.
| ctxt | an XPath parser context |
| err | an xmlXPathError code |
| #define xmlXPathSetTypeError | ( | ctxt | ) |
Raises an XPATH_INVALID_TYPE error.
| ctxt | an XPath parser context |
| #define xmlXPathStackIsExternal | ( | ctxt | ) |
Checks if the current value on the XPath stack is an external object.
| ctxt | an XPath parser context |
| #define xmlXPathStackIsNodeSet | ( | ctxt | ) |
Check if the current value on the XPath stack is a node set or an XSLT value tree.
| ctxt | an XPath parser context |
| #define XP_ERROR | ( | X | ) |
Macro to raise an XPath error and return.
| X | the error code |
| #define XP_ERROR0 | ( | X | ) |
Macro to raise an XPath error and return 0.
| X | the error code |
| void 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 xmlXPathBooleanFunction | ( | xmlXPathParserContext * | ctxt, |
| int | nargs ) |
Implement the boolean() XPath function boolean boolean(object) The boolean function converts its argument to a boolean as follows:
| ctxt | the XPath Parser context |
| nargs | the number of arguments |
| void 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 |
| int 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 |
| void 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 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 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 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. |
| void 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 |
| xmlNodeSet * 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 |
| xmlNodeSet * 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 |
| xmlNodeSet * xmlXPathDistinctSorted | ( | xmlNodeSet * | nodes | ) |
Implements the EXSLT - Sets distinct() function: node-set set:distinct (node-set)
| nodes | a node-set, sorted by document order |
| void 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 |
| int xmlXPathEqualValues | ( | xmlXPathParserContext * | ctxt | ) |
Implement the equal operation on XPath objects content: arg1 == arg2
| ctxt | the XPath Parser context |
| void xmlXPathErr | ( | xmlXPathParserContext * | ctxt, |
| int | code ) |
Handle an XPath error.
| ctxt | a XPath parser context |
| code | the error code |
| void 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 xmlXPathEvalExpr | ( | xmlXPathParserContext * | ctxt | ) |
Parse and evaluate an XPath expression in the given context, then push the result on the context stack.
| ctxt | the XPath Parser context |
| int 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 |
| void xmlXPathFalseFunction | ( | xmlXPathParserContext * | ctxt, |
| int | nargs ) |
Implement the false() XPath function boolean false()
| ctxt | the XPath Parser context |
| nargs | the number of arguments |
| void 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 xmlXPathFreeParserContext | ( | xmlXPathParserContext * | ctxt | ) |
Free up an xmlXPathParserContext.
| ctxt | the context to free |
| xmlXPathFunction 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 |
| xmlXPathFunction 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 |
| int 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 |
| void 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 |
| xmlNodeSet * 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 |
| int xmlXPathIsNodeType | ( | const xmlChar * | name | ) |
Is the name given a NodeType one.
[38] NodeType ::= 'comment' | 'text' | 'processing-instruction' | 'node'
| name | a name string |
| void 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 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 |
| xmlNodeSet * 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 |
| xmlNodeSet * 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 |
| void 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 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 |
| void 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 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 |
| xmlXPathObject * xmlXPathNewBoolean | ( | int | val | ) |
Create a new xmlXPathObject of type boolean and of value val
| val | the boolean value |
| xmlXPathObject * xmlXPathNewCString | ( | const char * | val | ) |
Create a new xmlXPathObject of type string and of value val
| val | the char * value |
| xmlXPathObject * xmlXPathNewFloat | ( | double | val | ) |
Create a new xmlXPathObject of type double and of value val
| val | the double value |
| xmlXPathObject * xmlXPathNewNodeSet | ( | xmlNode * | val | ) |
Create a new xmlXPathObject of type NodeSet and initialize it with the single Node val
| val | the NodePtr value |
| xmlXPathObject * xmlXPathNewNodeSetList | ( | xmlNodeSet * | val | ) |
Create a new xmlXPathObject of type NodeSet and initialize it with the Nodeset val
| val | an existing NodeSet |
| xmlXPathParserContext * xmlXPathNewParserContext | ( | const xmlChar * | str, |
| xmlXPathContext * | ctxt ) |
Utilities to extend XPath.
Utilities to extend XPath.
| str | the XPath expression |
| ctxt | the XPath context |
| xmlXPathObject * xmlXPathNewString | ( | const xmlChar * | val | ) |
Create a new xmlXPathObject of type string and of value val
| val | the xmlChar * value |
| xmlXPathObject * xmlXPathNewValueTree | ( | xmlNode * | val | ) |
Create a new xmlXPathObject of type Value Tree (XSLT) and initialize it with the tree root val
| val | the NodePtr value |
| xmlNode * 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 |
| xmlNode * 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 |
| xmlNode * 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 |
| xmlNode * 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 |
| xmlNode * 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 |
| xmlNode * 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 |
| xmlNode * 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 |
| xmlNode * 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 |
| xmlNode * 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 |
| xmlNode * 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 |
| xmlNode * 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 |
| xmlNode * 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 |
| xmlNode * 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 |
| xmlNodeSet * 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 |
| xmlNodeSet * 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 |
| int xmlXPathNodeSetAdd | ( | xmlNodeSet * | cur, |
| xmlNode * | val ) |
| int 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 |
| int xmlXPathNodeSetAddUnique | ( | xmlNodeSet * | cur, |
| xmlNode * | val ) |
| int xmlXPathNodeSetContains | ( | xmlNodeSet * | cur, |
| xmlNode * | val ) |
NodeSet handling.
NodeSet handling.
| cur | the node-set |
| val | the node |
| void xmlXPathNodeSetDel | ( | xmlNodeSet * | cur, |
| xmlNode * | val ) |
| void 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. |
| xmlNodeSet * 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 |
| void xmlXPathNodeSetRemove | ( | xmlNodeSet * | cur, |
| int | val ) |
Removes an entry from an existing NodeSet list.
| cur | the initial node set |
| val | the index to remove |
| void xmlXPathNodeSetSort | ( | xmlNodeSet * | set | ) |
Sort the node set in document order.
| set | the node set |
| xmlNodeSet * 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 |
| xmlNodeSet * 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 |
| void 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 |
| int xmlXPathNotEqualValues | ( | xmlXPathParserContext * | ctxt | ) |
Implement the equal operation on XPath objects content: arg1 == arg2
| ctxt | the XPath Parser context |
| void 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 |
| const xmlChar * 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 |
| void xmlXPathNumberFunction | ( | xmlXPathParserContext * | ctxt, |
| int | nargs ) |
Implement the number() XPath function number number(object?)
| ctxt | the XPath Parser context |
| nargs | the number of arguments |
| xmlChar * xmlXPathParseName | ( | xmlXPathParserContext * | ctxt | ) |
parse an XML name
| ctxt | the XPath Parser context |
| xmlChar * xmlXPathParseNCName | ( | xmlXPathParserContext * | ctxt | ) |
Parse an XML non-colonized name.
| ctxt | the XPath Parser context |
| int xmlXPathPopBoolean | ( | xmlXPathParserContext * | ctxt | ) |
Pops a boolean from the stack, handling conversion if needed.
Check error with xmlXPathCheckError.
| ctxt | an XPath parser context |
| void * xmlXPathPopExternal | ( | xmlXPathParserContext * | ctxt | ) |
Pops an external object from the stack, handling conversion if needed.
Check error with xmlXPathCheckError.
| ctxt | an XPath parser context |
| xmlNodeSet * xmlXPathPopNodeSet | ( | xmlXPathParserContext * | ctxt | ) |
Pops a node-set from the stack, handling conversion if needed.
Check error with xmlXPathCheckError.
| ctxt | an XPath parser context |
| double xmlXPathPopNumber | ( | xmlXPathParserContext * | ctxt | ) |
Pops a number from the stack, handling conversion if needed.
Check error with xmlXPathCheckError.
| ctxt | an XPath parser context |
| xmlChar * xmlXPathPopString | ( | xmlXPathParserContext * | ctxt | ) |
Pops a string from the stack, handling conversion if needed.
Check error with xmlXPathCheckError.
| ctxt | an XPath parser context |
| void 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 xmlXPathRegisterAllFunctions | ( | xmlXPathContext * | ctxt | ) |
Registers all default XPath functions in this context.
| ctxt | the XPath context |
| void xmlXPathRegisteredFuncsCleanup | ( | xmlXPathContext * | ctxt | ) |
Cleanup the XPath context data associated to registered functions.
| ctxt | the XPath context |
| void xmlXPathRegisteredNsCleanup | ( | xmlXPathContext * | ctxt | ) |
Cleanup the XPath context data associated to registered variables.
| ctxt | the XPath context |
| void xmlXPathRegisteredVariablesCleanup | ( | xmlXPathContext * | ctxt | ) |
Cleanup the XPath context data associated to registered variables.
| ctxt | the XPath context |
| int 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 |
| void 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 |
| int 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 |
| int 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 |
| int 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 |
| void 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 |
| int 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 |
| void xmlXPathRoot | ( | xmlXPathParserContext * | ctxt | ) |
Initialize the context to the root of the document.
| ctxt | the XPath Parser context |
| void 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 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 |
| double 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 |
| void xmlXPathStringFunction | ( | xmlXPathParserContext * | ctxt, |
| int | nargs ) |
Implement the string() XPath function string string(object?) The string function converts an object to a string as follows:
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 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 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 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 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:
| ctxt | the XPath Parser context |
| nargs | the number of arguments |
| void 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 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 |
| xmlNodeSet * 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 |
| xmlNodeSet * 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 |
| void 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 xmlXPathTrueFunction | ( | xmlXPathParserContext * | ctxt, |
| int | nargs ) |
Implement the true() XPath function boolean true()
| ctxt | the XPath Parser context |
| nargs | the number of arguments |
| void 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 |
| xmlXPathObject * xmlXPathValuePop | ( | xmlXPathParserContext * | ctxt | ) |
Pops the top XPath object from the value stack.
| ctxt | an XPath evaluation context |
| int 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 |
| xmlXPathObject * 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 |
| xmlXPathObject * 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 |
| xmlXPathObject * xmlXPathWrapCString | ( | char * | val | ) |
Wraps a string into an XPath object.
| val | the char * value |
| xmlXPathObject * xmlXPathWrapExternal | ( | void * | val | ) |
Wraps the val data into an XPath object.
| val | the user data |
| xmlXPathObject * 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 |
| xmlXPathObject * xmlXPathWrapString | ( | xmlChar * | val | ) |
Wraps the val string into an XPath object.
Frees val in case of error.
| val | the xmlChar * value |