Node.GetValueXXX() and Node.GetAttrX() functions are now changed to Node.X() and Node.AX() functions. The old ones still exist, so your code will not break, but we recommend you use the shorter names from now on. These have been added to reduce the amount of typing needed when using this package to extract typed node/attribute values. Added node.B() and node.Ab() to retrieve boolean values. README updated to reflect the changes.
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jim teeuwen
parent
d0d1c2f9f5
commit
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46
README
46
README
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@ -37,19 +37,22 @@
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Each node exposes also a number of functions which allow easy access to a node
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value or an attribute value. They come in various forms to allow transparent
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conversion to types like int, int64, float, float32, float64, etc:
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conversion to types: int, int64, uint, uint64, float, float32, float64:
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*node.GetValue(ns, name string) string;
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*node.GetValuei(ns, name string) int;
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*node.GetValuei64(ns, name string) int64;
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*node.GetValuef(ns, name string) float;
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*node.GetValuef32(ns, name string) float32;
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*node.GetValuef64(ns, name string) float64;
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*node.S(ns, name string) string
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*node.I(ns, name string) int
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*node.I64(ns, name string) int64
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*node.U(ns, name string) uint
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*node.U64(ns, name string) uint64
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*node.F(ns, name string) float
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*node.F32(ns, name string) float32
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*node.F64(ns, name string) float64
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*node.B(namespace, name string) bool
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Note that the GetValue() functions actually consider child nodes for matching
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names as well as the current node. In effect they first perform a
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node.SelectNode() and then return the value of the resulting node converted to
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the appripriate type. This allows you to do this:
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Note that these functions actually consider child nodes for matching names as
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well as the current node. In effect they first perform a node.SelectNode() and
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then return the value of the resulting node converted to the appropriate type.
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This allows you to do this:
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Consider this piece of xml:
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<car>
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@ -58,23 +61,26 @@
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</car>
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Now this code:
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node := doc.SelectNode("", "car");
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brand := node.GetValue("", "brand");
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node := doc.SelectNode("", "car")
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brand := node.S("", "brand")
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Eventhough 'brand' is not the name of @node, we still get the right value
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back (BMW), because GetValue searches through the child nodes when looking
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back (BMW), because node.S() searches through the child nodes when looking
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for the value if the current node does not match the given namespace and
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name.
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For attributes, we only go through the attributes of the current node this
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function is invoked on:
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*node.GetAttr(ns, name string) string;
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*node.GetAttri(ns, name string) int;
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*node.GetAttri64(ns, name string) int64;
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*node.GetAttrf(ns, name string) float;
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*node.GetAttrf32(ns, name string) float32;
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*node.GetAttrf64(ns, name string) float64;
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*node.As(ns, name string) string
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*node.Ai(ns, name string) int
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*node.Ai64(ns, name string) int64
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*node.Au(ns, name string) uint
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*node.Au64(ns, name string) uint64
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*node.Af(ns, name string) float
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*node.Af32(ns, name string) float32
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*node.Af64(ns, name string) float64
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*node.Ab(namespace, name string) bool
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All of these functions return either "" or 0 when the specified node or
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attribute could not be found. No errors are generated.
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219
xmlx/node.go
219
xmlx/node.go
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@ -53,86 +53,119 @@ func (this *Node) Unmarshal(obj interface{}) os.Error {
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}
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// Get node value as string
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func (this *Node) GetValue(namespace, name string) string {
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node := rec_SelectNode(this, namespace, name)
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if node == nil {
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return ""
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}
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func (this *Node) S(namespace, name string) string {
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if node := rec_SelectNode(this, namespace, name); node != nil {
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return node.Value
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}
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return ""
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}
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// Deprecated - use Node.S()
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func (this *Node) GetValue(namespace, name string) string { return this.S(namespace, name) }
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// Get node value as int
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func (this *Node) GetValuei(namespace, name string) int {
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node := rec_SelectNode(this, namespace, name)
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if node == nil || node.Value == "" {
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return 0
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}
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func (this *Node) I(namespace, name string) int {
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if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
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n, _ := strconv.Atoi(node.Value)
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return n
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}
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// Get node value as int64
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func (this *Node) GetValuei64(namespace, name string) int64 {
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node := rec_SelectNode(this, namespace, name)
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if node == nil || node.Value == "" {
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return 0
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}
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// Deprecated - use Node.I()
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func (this *Node) GetValuei(namespace, name string) int { return this.I(namespace, name) }
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// Get node value as int64
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func (this *Node) I64(namespace, name string) int64 {
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if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
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n, _ := strconv.Atoi64(node.Value)
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return n
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}
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// Get node value as uint
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func (this *Node) GetValueui(namespace, name string) uint {
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node := rec_SelectNode(this, namespace, name)
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if node == nil || node.Value == "" {
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return 0
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}
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// Deprecated - use Node.I64()
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func (this *Node) GetValuei64(namespace, name string) int64 { return this.I64(namespace, name) }
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// Get node value as uint
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func (this *Node) U(namespace, name string) uint {
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if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
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n, _ := strconv.Atoui(node.Value)
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return n
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}
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// Get node value as uint64
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func (this *Node) GetValueui64(namespace, name string) uint64 {
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node := rec_SelectNode(this, namespace, name)
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if node == nil || node.Value == "" {
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return 0
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}
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// Deprecated - use Node.U()
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func (this *Node) GetValueui(namespace, name string) uint { return this.U(namespace, name) }
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// Get node value as uint64
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func (this *Node) U64(namespace, name string) uint64 {
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if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
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n, _ := strconv.Atoui64(node.Value)
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return n
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}
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// Get node value as float
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func (this *Node) GetValuef(namespace, name string) float {
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node := rec_SelectNode(this, namespace, name)
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if node == nil || node.Value == "" {
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return 0
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}
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// Deprecated - use Node.U64()
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func (this *Node) GetValueui64(namespace, name string) uint64 { return this.U64(namespace, name) }
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// Get node value as float
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func (this *Node) F(namespace, name string) float {
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if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
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n, _ := strconv.Atof(node.Value)
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return n
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}
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// Get node value as float32
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func (this *Node) GetValuef32(namespace, name string) float32 {
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node := rec_SelectNode(this, namespace, name)
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if node == nil || node.Value == "" {
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return 0
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}
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// Deprecated - use Node.F()
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func (this *Node) GetValuef(namespace, name string) float { return this.F(namespace, name) }
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// Get node value as float32
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func (this *Node) F32(namespace, name string) float32 {
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if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
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n, _ := strconv.Atof32(node.Value)
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return n
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}
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// Get node value as float64
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func (this *Node) GetValuef64(namespace, name string) float64 {
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node := rec_SelectNode(this, namespace, name)
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if node == nil || node.Value == "" {
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return 0
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}
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// Deprecated - use Node.F32()
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func (this *Node) GetValuef32(namespace, name string) float32 { return this.F32(namespace, name) }
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// Get node value as float64
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func (this *Node) F64(namespace, name string) float64 {
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if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
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n, _ := strconv.Atof64(node.Value)
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return n
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}
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return 0
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}
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// Deprecated - use Node.F64()
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func (this *Node) GetValuef64(namespace, name string) float64 { return this.F64(namespace, name) }
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// Get node value as bool
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func (this *Node) B(namespace, name string) bool {
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if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
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n, _ := strconv.Atob(node.Value)
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return n
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}
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return false
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}
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// Get attribute value as string
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func (this *Node) GetAttr(namespace, name string) string {
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func (this *Node) As(namespace, name string) string {
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for _, v := range this.Attributes {
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if namespace == v.Name.Space && name == v.Name.Local {
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return v.Value
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@ -141,75 +174,109 @@ func (this *Node) GetAttr(namespace, name string) string {
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return ""
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}
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// Deprecated - use Node.As()
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func (this *Node) GetAttr(namespace, name string) string { return this.As(namespace, name) }
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// Get attribute value as int
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func (this *Node) GetAttri(namespace, name string) int {
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s := this.GetAttr(namespace, name)
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if s == "" {
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return 0
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}
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func (this *Node) Ai(namespace, name string) int {
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if s := this.As(namespace, name); s != "" {
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n, _ := strconv.Atoi(s)
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return n
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}
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// Get attribute value as uint
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func (this *Node) GetAttrui(namespace, name string) uint {
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s := this.GetAttr(namespace, name)
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if s == "" {
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return 0
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}
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// Deprecated - use Node.Ai()
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func (this *Node) GetAttri(namespace, name string) int { return this.Ai(namespace, name) }
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// Get attribute value as uint
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func (this *Node) Au(namespace, name string) uint {
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if s := this.As(namespace, name); s != "" {
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n, _ := strconv.Atoui(s)
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return n
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}
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// Get attribute value as uint64
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func (this *Node) GetAttrui64(namespace, name string) uint64 {
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s := this.GetAttr(namespace, name)
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if s == "" {
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return 0
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}
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// Deprecated - use Node.Au()
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func (this *Node) GetAttrui(namespace, name string) uint { return this.Au(namespace, name) }
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// Get attribute value as uint64
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func (this *Node) Au64(namespace, name string) uint64 {
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if s := this.As(namespace, name); s != "" {
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n, _ := strconv.Atoui64(s)
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return n
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}
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// Get attribute value as int64
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func (this *Node) GetAttri64(namespace, name string) int64 {
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s := this.GetAttr(namespace, name)
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if s == "" {
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return 0
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}
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// Deprecated - use Node.Au64()
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func (this *Node) GetAttrui64(namespace, name string) uint64 { return this.Au64(namespace, name) }
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// Get attribute value as int64
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func (this *Node) Ai64(namespace, name string) int64 {
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if s := this.As(namespace, name); s != "" {
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n, _ := strconv.Atoi64(s)
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return n
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}
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// Get attribute value as float
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func (this *Node) GetAttrf(namespace, name string) float {
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s := this.GetAttr(namespace, name)
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if s == "" {
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return 0
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}
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// Deprecated - use Node.Ai64()
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func (this *Node) GetAttri64(namespace, name string) int64 { return this.Ai64(namespace, name) }
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// Get attribute value as float
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func (this *Node) Af(namespace, name string) float {
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if s := this.As(namespace, name); s != "" {
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n, _ := strconv.Atof(s)
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return n
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}
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// Get attribute value as float32
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func (this *Node) GetAttrf32(namespace, name string) float32 {
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s := this.GetAttr(namespace, name)
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if s == "" {
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return 0
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}
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// Deprecated - use Node.Af()
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func (this *Node) GetAttrf(namespace, name string) float { return this.Af(namespace, name) }
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// Get attribute value as float32
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func (this *Node) Af32(namespace, name string) float32 {
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if s := this.As(namespace, name); s != "" {
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n, _ := strconv.Atof32(s)
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return n
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}
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// Get attribute value as float64
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func (this *Node) GetAttrf64(namespace, name string) float64 {
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s := this.GetAttr(namespace, name)
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if s == "" {
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return 0
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}
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// Deprecated - use Node.Af32()
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func (this *Node) GetAttrf32(namespace, name string) float32 { return this.Af32(namespace, name) }
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// Get attribute value as float64
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func (this *Node) Af64(namespace, name string) float64 {
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if s := this.As(namespace, name); s != "" {
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n, _ := strconv.Atof64(s)
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return n
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}
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return 0
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}
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// Deprecated - use Node.Af64()
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func (this *Node) GetAttrf64(namespace, name string) float64 { return this.Af64(namespace, name) }
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// Get attribute value as bool
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func (this *Node) Ab(namespace, name string) bool {
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if s := this.As(namespace, name); s != "" {
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n, _ := strconv.Atob(s)
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return n
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}
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return false
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}
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// Returns true if this node has the specified attribute. False otherwise.
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func (this *Node) HasAttr(namespace, name string) bool {
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