Ejemplo n.º 1
0
//Implementation of document() from XSLT spec
func XsltDocumentFn(context xpath.VariableScope, args []interface{}) interface{} {
	if len(args) < 1 {
		return nil
	}
	c := context.(*ExecutionContext)

	switch doc := args[0].(type) {
	case string:
		if doc == "" {
			nodeset := xml.Nodeset{c.Style.Doc}
			return nodeset.ToPointers()
		}
		input := c.FetchInputDocument(doc, false)
		if input != nil {
			nodeset := xml.Nodeset{input}
			return nodeset.ToPointers()
		}
		return nil
	case []unsafe.Pointer:
		n := xml.NewNode(doc[0], nil)
		location := n.Content()
		input := c.FetchInputDocument(location, true)
		if input != nil {
			nodeset := xml.Nodeset{input}
			return nodeset.ToPointers()
		}
		fmt.Println("DOCUMENT", location)
	}
	return nil
}
Ejemplo n.º 2
0
func EXSLTnodeset(context xpath.VariableScope, args []interface{}) interface{} {
	if len(args) < 1 {
		return nil
	}
	c := context.(*ExecutionContext)
	nodes := args[0]
	switch v := nodes.(type) {
	case []unsafe.Pointer:
		if len(v) == 0 {
			return nil
		}
		fauxroot := c.Output.CreateElementNode("VARIABLE")
		for _, node := range v {
			n := xml.NewNode(node, nil)
			fauxroot.AddChild(n)
		}
		out := xml.Nodeset{fauxroot}
		return out.ToPointers()
	default:
		out := fmt.Sprintf("%v", v)
		fmt.Println("invalid argument to exslt:nodeset", out)
	}

	return nodes
}
Ejemplo n.º 3
0
func (context *ExecutionContext) EvalXPathAsNodeset(xmlNode xml.Node, data interface{}) (result xml.Nodeset, err error) {
	_, err = context.EvalXPath(xmlNode, data)
	if err != nil {
		return nil, err
	}
	nodePtrs, err := context.XPathContext.ResultAsNodeset()
	if err != nil {
		return nil, err
	}
	var output xml.Nodeset
	for _, nodePtr := range nodePtrs {
		output = append(output, xml.NewNode(nodePtr, xmlNode.MyDocument()))
	}
	result = output
	return
}
Ejemplo n.º 4
0
// util function because we can't assume we're actually getting a string
func argValToString(val interface{}) (out string) {
	if val == nil {
		return
	}
	switch v := val.(type) {
	case string:
		return v
	case []unsafe.Pointer:
		if len(v) == 0 {
			return
		}
		n := xml.NewNode(v[0], nil)
		out = n.Content()
	default:
		out = fmt.Sprintf("%v", v)
	}
	return
}
Ejemplo n.º 5
0
func (context *ExecutionContext) EvalXPath(xmlNode xml.Node, data interface{}) (result interface{}, err error) {
	switch data := data.(type) {
	case string:
		if xpathExpr := xpath.Compile(data); xpathExpr != nil {
			defer xpathExpr.Free()
			result, err = context.EvalXPath(xmlNode, xpathExpr)
		} else {
			err = errors.New("cannot compile xpath: " + data)
		}
	case []byte:
		result, err = context.EvalXPath(xmlNode, string(data))
	case *xpath.Expression:
		xpathCtx := context.XPathContext
		xpathCtx.SetResolver(context)
		err := xpathCtx.Evaluate(xmlNode.NodePtr(), data)
		if err != nil {
			return nil, err
		}
		rt := xpathCtx.ReturnType()
		switch rt {
		case xpath.XPATH_NODESET, xpath.XPATH_XSLT_TREE:
			nodePtrs, err := xpathCtx.ResultAsNodeset()
			if err != nil {
				return nil, err
			}
			var output []xml.Node
			for _, nodePtr := range nodePtrs {
				output = append(output, xml.NewNode(nodePtr, xmlNode.MyDocument()))
			}
			result = output
		case xpath.XPATH_NUMBER:
			result, err = xpathCtx.ResultAsNumber()
		case xpath.XPATH_BOOLEAN:
			result, err = xpathCtx.ResultAsBoolean()
		default:
			result, err = xpathCtx.ResultAsString()
		}
	default:
		err = errors.New("Strange type passed to ExecutionContext.EvalXPath")
	}
	return
}