libxml-xpath.html

libxml,在UNIX/LINUX下非常重要的一个库,为XML相关应用提供方便.目前上载的是最新版本,若要取得最新版本,请参考里面的readme.

void	<a href="#xmlXPathFunction">xmlXPathFunction</a>		(<a href="libxml-xpath.html#xmlXPathParserContextPtr">xmlXPathParserContextPtr</a> ctxt, <br />					 int nargs)
</pre>
<pre class="programlisting">void	<a href="#xmlXPathInit">xmlXPathInit</a>			(void)</pre>
<pre class="programlisting">int	<a href="#xmlXPathIsInf">xmlXPathIsInf</a>			(double val)</pre>
<pre class="programlisting">int	<a href="#xmlXPathIsNaN">xmlXPathIsNaN</a>			(double val)</pre>
<pre class="programlisting"><a href="libxml-xpath.html#xmlXPathContextPtr">xmlXPathContextPtr</a>	<a href="#xmlXPathNewContext">xmlXPathNewContext</a>	(<a href="libxml-tree.html#xmlDocPtr">xmlDocPtr</a> doc)</pre>
<pre class="programlisting"><a href="libxml-xpath.html#xmlNodeSetPtr">xmlNodeSetPtr</a>	<a href="#xmlXPathNodeSetCreate">xmlXPathNodeSetCreate</a>	(<a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> val)</pre>
<pre class="programlisting"><a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	<a href="#xmlXPathObjectCopy">xmlXPathObjectCopy</a>	(<a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a> val)</pre>
<pre class="programlisting">long	<a href="#xmlXPathOrderDocElems">xmlXPathOrderDocElems</a>		(<a href="libxml-tree.html#xmlDocPtr">xmlDocPtr</a> doc)</pre>
<pre class="programlisting">Function type: <a href="#xmlXPathVariableLookupFunc">xmlXPathVariableLookupFunc</a>
<a href="libxml-xpath.html#xmlXPathObjectPtr">xmlXPathObjectPtr</a>	<a href="#xmlXPathVariableLookupFunc">xmlXPathVariableLookupFunc</a>	(void * ctxt, <br />							 const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * name, <br />							 const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> * ns_uri)
</pre>
<h2>Description</h2>
<h3><a name="xmlXPathNodeSetGetLength" id="xmlXPathNodeSetGetLength"></a>Macro: xmlXPathNodeSetGetLength</h3><pre>#define xmlXPathNodeSetGetLength</pre><p>Implement a functionality similar to the DOM NodeList.length. Returns the number of nodes in the node-set.</p>
<h3><a name="xmlXPathNodeSetIsEmpty" id="xmlXPathNodeSetIsEmpty"></a>Macro: xmlXPathNodeSetIsEmpty</h3><pre>#define xmlXPathNodeSetIsEmpty</pre><p>Checks whether @ns is empty or not. Returns %TRUE if @ns is an empty node-set.</p>
<h3><a name="xmlXPathNodeSetItem" id="xmlXPathNodeSetItem"></a>Macro: xmlXPathNodeSetItem</h3><pre>#define xmlXPathNodeSetItem</pre><p>Implements a functionality similar to the DOM NodeList.item(). Returns the <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> at the given @index in @ns or NULL if @index is out of range (0 to length-1)</p>
<h3><a name="xmlNodeSet" id="xmlNodeSet">Structure xmlNodeSet</a></h3><pre class="programlisting">Structure xmlNodeSet<br />struct _xmlNodeSet {
    int	nodeNr	: number of nodes in the set
    int	nodeMax	: size of the array as allocated
    <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a> *	nodeTab	: array of nodes in no particular order @
}</pre><h3><a name="xmlXPathAxis" id="xmlXPathAxis">Structure xmlXPathAxis</a></h3><pre class="programlisting">Structure xmlXPathAxis<br />struct _xmlXPathAxis {
    const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	name	: the axis name
    <a href="libxml-xpath.html#xmlXPathAxisFunc">xmlXPathAxisFunc</a>	func	: the search function
}</pre><h3><a name="xmlXPathCompExpr" id="xmlXPathCompExpr">Structure xmlXPathCompExpr</a></h3><pre class="programlisting">Structure xmlXPathCompExpr<br />struct _xmlXPathCompExpr {
The content of this structure is not made public by the API.
}</pre><h3><a name="xmlXPathContext" id="xmlXPathContext">Structure xmlXPathContext</a></h3><pre class="programlisting">Structure xmlXPathContext<br />struct _xmlXPathContext {
    <a href="libxml-tree.html#xmlDocPtr">xmlDocPtr</a>	doc	: The current document
    <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a>	node	: The current node
    int	nb_variables_unused	: unused (hash table)
    int	max_variables_unused	: unused (hash table)
    <a href="libxml-hash.html#xmlHashTablePtr">xmlHashTablePtr</a>	varHash	: Hash table of defined variables
    int	nb_types	: number of defined types
    int	max_types	: max number of types
    <a href="libxml-xpath.html#xmlXPathTypePtr">xmlXPathTypePtr</a>	types	: Array of defined types
    int	nb_funcs_unused	: unused (hash table)
    int	max_funcs_unused	: unused (hash table)
    <a href="libxml-hash.html#xmlHashTablePtr">xmlHashTablePtr</a>	funcHash	: Hash table of defined funcs
    int	nb_axis	: number of defined axis
    int	max_axis	: max number of axis
    <a href="libxml-xpath.html#xmlXPathAxisPtr">xmlXPathAxisPtr</a>	axis	: Array of defined axis the namespace nod
    <a href="libxml-tree.html#xmlNsPtr">xmlNsPtr</a> *	namespaces	: Array of namespaces
    int	nsNr	: number of namespace in scope
    void *	user	: function to free extra variables
    int	contextSize	: the context size
    int	proximityPosition	: the proximity position extra stuff for
    int	xptr	: it this an XPointer context
    <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a>	here	: for here()
    <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a>	origin	: for origin() the set of namespace decla
    <a href="libxml-hash.html#xmlHashTablePtr">xmlHashTablePtr</a>	nsHash	: The namespaces hash table
    <a href="libxml-xpath.html#xmlXPathVariableLookupFunc">xmlXPathVariableLookupFunc</a>	varLookupFunc	: variable lookup func
    void *	varLookupData	: variable lookup data Possibility to lin
    void *	extra	: needed for XSLT The function name and U
    const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	function
    const <a href="libxml-xmlstring.html#xmlChar">xmlChar</a> *	functionURI	: function lookup function and data
    <a href="libxml-xpath.html#xmlXPathFuncLookupFunc">xmlXPathFuncLookupFunc</a>	funcLookupFunc	: function lookup func
    void *	funcLookupData	: function lookup data temporary namespac
    <a href="libxml-tree.html#xmlNsPtr">xmlNsPtr</a> *	tmpNsList	: Array of namespaces
    int	tmpNsNr	: number of namespace in scope error repo
    void *	userData	: user specific data block
    <a href="libxml-xmlerror.html#xmlStructuredErrorFunc">xmlStructuredErrorFunc</a>	error	: the callback in case of errors
    <a href="libxml-xmlerror.html#xmlError">xmlError</a>	lastError	: the last error
    <a href="libxml-tree.html#xmlNodePtr">xmlNodePtr</a>	debugNode	: the source node XSLT dictionnary
    <a href="libxml-dict.html#xmlDictPtr">xmlDictPtr</a>	dict	: dictionnary if any
}</pre><h3>Enum <a name="xmlXPathError" id="xmlXPathError">xmlXPathError</a></h3><pre class="programlisting">Enum xmlXPathError {
    <a name="XPATH_EXPRESSION_OK" id="XPATH_EXPRESSION_OK">XPATH_EXPRESSION_OK</a> = 0
    <a name="XPATH_NUMBER_ERROR" id="XPATH_NUMBER_ERROR">XPATH_NUMBER_ERROR</a> = 1
    <a name="XPATH_UNFINISHED_LITERAL_ERROR" id="XPATH_UNFINISHED_LITERAL_ERROR">XPATH_UNFINISHED_LITERAL_ERROR</a> = 2
    <a name="XPATH_START_LITERAL_ERROR" id="XPATH_START_LITERAL_ERROR">XPATH_START_LITERAL_ERROR</a> = 3
    <a name="XPATH_VARIABLE_REF_ERROR" id="XPATH_VARIABLE_REF_ERROR">XPATH_VARIABLE_REF_ERROR</a> = 4
    <a name="XPATH_UNDEF_VARIABLE_ERROR" id="XPATH_UNDEF_VARIABLE_ERROR">XPATH_UNDEF_VARIABLE_ERROR</a> = 5
    <a name="XPATH_INVALID_PREDICATE_ERROR" id="XPATH_INVALID_PREDICATE_ERROR">XPATH_INVALID_PREDICATE_ERROR</a> = 6
    <a name="XPATH_EXPR_ERROR" id="XPATH_EXPR_ERROR">XPATH_EXPR_ERROR</a> = 7
    <a name="XPATH_UNCLOSED_ERROR" id="XPATH_UNCLOSED_ERROR">XPATH_UNCLOSED_ERROR</a> = 8
    <a name="XPATH_UNKNOWN_FUNC_ERROR" id="XPATH_UNKNOWN_FUNC_ERROR">XPATH_UNKNOWN_FUNC_ERROR</a> = 9
    <a name="XPATH_INVALID_OPERAND" id="XPATH_INVALID_OPERAND">XPATH_INVALID_OPERAND</a> = 10