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Showing content from http://www.ncbi.nlm.nih.gov/IEB/ToolBox/CPP_DOC/doxyhtml/extension__element_8cpp_source.html below:

NCBI C++ ToolKit: src/misc/xmlwrapp/extension_element.cpp Source File

39 #include <libxslt/xsltutils.h> 48 static

xmlXPathObjectPtr

50 const char

* xpath_expression,

53 int

old_context_size = ctxt->xpathCtxt->contextSize;

54 int

old_proximity_position = ctxt->xpathCtxt->proximityPosition;

55 int

old_ns_nr = ctxt->xpathCtxt->nsNr;

56

xmlNsPtr * old_namespaces = ctxt->xpathCtxt->namespaces;

57

xmlNodePtr old_node = ctxt->xpathCtxt->node;

59

ctxt->xpathCtxt->node = node ==

NULL

? ctxt->node : node;

61

ctxt->xpathCtxt->contextSize = ctxt->xpathCtxt->proximityPosition;

63

xmlXPathObjectPtr result_obj = xmlXPathEvalExpression(

64 reinterpret_cast<const

xmlChar*

>

(xpath_expression),

67

ctxt->xpathCtxt->node = old_node;

68

ctxt->xpathCtxt->contextSize = old_context_size;

69

ctxt->xpathCtxt->proximityPosition = old_proximity_position;

70

ctxt->xpathCtxt->nsNr = old_ns_nr;

71

ctxt->xpathCtxt->namespaces = old_namespaces;

73 if

(result_obj ==

NULL

)

86

xslt_ctxt(

NULL

), instruction_node(

NULL

)

96

pimpl_(new

impl

::extension_element_impl)

106

pimpl_(new

impl

::extension_element_impl)

122

other.pimpl_ =

NULL

;

128 if

(

this

!= &other) {

132

other.pimpl_ =

NULL

;

141 "out of XSLT context."

);

144 "when there is no XSLT instruction node."

);

155 "out of XSLT context."

);

166 "out of XSLT context."

);

168

xpath_expression,

NULL

));

The xml::node class is used to hold information about one XML node.

void * get_node_data(void) const

This exception class is thrown by xmlwrapp for all runtime XSLT-related errors.

The XSLT extension element object is used to be a base class for the user provided XSLT extension ele...

virtual ~extension_element()

Destroy extension element object and clean the memory up.

xpath_object evaluate(const char *xpath_expression, const xml::node &node)

Evaluate XPath expression.

extension_element()

Create a new extension element.

impl::extension_element_impl * pimpl_

extension_element & operator=(const extension_element &other)

Create a copy of the extension element object.

void report_error(const char *error)

Report an error to the XSLT processor.

The xslt::xpath_object class is used to store extension function arguments and return values.

static xmlXPathObjectPtr evaluate_xpath_expression(xsltTransformContextPtr ctxt, const char *xpath_expression, xmlNodePtr node)

XSLT extension element object.

This file contains definition of the xslt::impl::extension_element_impl class.

xsltTransformContextPtr xslt_ctxt

xmlNodePtr instruction_node

This file contains the definition of the xslt::exception class.

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