41 lines
850 B
Plaintext
41 lines
850 B
Plaintext
package gxpath
|
|
|
|
import (
|
|
"goutil/xmlUtil/gxpath/internal/build"
|
|
"goutil/xmlUtil/gxpath/internal/query"
|
|
"goutil/xmlUtil/gxpath/xpath"
|
|
)
|
|
|
|
// NodeIterator holds all matched Node object.
|
|
type NodeIterator struct {
|
|
node xpath.NodeNavigator
|
|
query query.Query
|
|
}
|
|
|
|
// Current returns current node which matched.
|
|
func (t *NodeIterator) Current() xpath.NodeNavigator {
|
|
return t.node
|
|
}
|
|
|
|
// MoveNext moves Navigator to the next match node.
|
|
func (t *NodeIterator) MoveNext() bool {
|
|
n := t.query.Select(t)
|
|
if n != nil {
|
|
if !t.node.MoveTo(n) {
|
|
t.node = n.Copy()
|
|
}
|
|
return true
|
|
}
|
|
return false
|
|
}
|
|
|
|
// Select selects a node set using the specified XPath expression.
|
|
func Select(root xpath.NodeNavigator, expr string) *NodeIterator {
|
|
qy, err := build.Build(expr)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
t := &NodeIterator{query: qy, node: root}
|
|
return t
|
|
}
|