1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
package intfns
import (
"encoding/xml"
"fmt"
"github.com/ChrisTrenkamp/goxpath/tree"
)
func last(c tree.Ctx, args ...tree.Result) (tree.Result, error) {
return tree.Num(c.Size), nil
}
func position(c tree.Ctx, args ...tree.Result) (tree.Result, error) {
return tree.Num(c.Pos), nil
}
func count(c tree.Ctx, args ...tree.Result) (tree.Result, error) {
n, ok := args[0].(tree.NodeSet)
if !ok {
return nil, fmt.Errorf("Cannot convert object to a node-set")
}
return tree.Num(len(n)), nil
}
func localName(c tree.Ctx, args ...tree.Result) (tree.Result, error) {
var n tree.NodeSet
ok := true
if len(args) == 1 {
n, ok = args[0].(tree.NodeSet)
} else {
n = c.NodeSet
}
if !ok {
return nil, fmt.Errorf("Cannot convert object to a node-set")
}
ret := ""
if len(n) == 0 {
return tree.String(ret), nil
}
node := n[0]
tok := node.GetToken()
switch node.GetNodeType() {
case tree.NtElem:
ret = tok.(xml.StartElement).Name.Local
case tree.NtAttr:
ret = tok.(xml.Attr).Name.Local
case tree.NtPi:
ret = tok.(xml.ProcInst).Target
}
return tree.String(ret), nil
}
func namespaceURI(c tree.Ctx, args ...tree.Result) (tree.Result, error) {
var n tree.NodeSet
ok := true
if len(args) == 1 {
n, ok = args[0].(tree.NodeSet)
} else {
n = c.NodeSet
}
if !ok {
return nil, fmt.Errorf("Cannot convert object to a node-set")
}
ret := ""
if len(n) == 0 {
return tree.String(ret), nil
}
node := n[0]
tok := node.GetToken()
switch node.GetNodeType() {
case tree.NtElem:
ret = tok.(xml.StartElement).Name.Space
case tree.NtAttr:
ret = tok.(xml.Attr).Name.Space
}
return tree.String(ret), nil
}
func name(c tree.Ctx, args ...tree.Result) (tree.Result, error) {
var n tree.NodeSet
ok := true
if len(args) == 1 {
n, ok = args[0].(tree.NodeSet)
} else {
n = c.NodeSet
}
if !ok {
return nil, fmt.Errorf("Cannot convert object to a node-set")
}
ret := ""
if len(n) == 0 {
return tree.String(ret), nil
}
node := n[0]
switch node.GetNodeType() {
case tree.NtElem:
t := node.GetToken().(xml.StartElement)
space := ""
if t.Name.Space != "" {
space = fmt.Sprintf("{%s}", t.Name.Space)
}
ret = fmt.Sprintf("%s%s", space, t.Name.Local)
case tree.NtAttr:
t := node.GetToken().(xml.Attr)
space := ""
if t.Name.Space != "" {
space = fmt.Sprintf("{%s}", t.Name.Space)
}
ret = fmt.Sprintf("%s%s", space, t.Name.Local)
case tree.NtPi:
ret = fmt.Sprintf("%s", node.GetToken().(xml.ProcInst).Target)
}
return tree.String(ret), nil
}
|
