Got rid of depracated Node api functions. Removed dependency on go-iconv in favor of go-charset (See README). go-charset is a native Go package and thus requires no CGO functionality. Meaning go-pkg-xmlx and go-pkg-rss can now be used in Google AppEngine. Some speed and memory efficiency improvements added. Should now do a lot less []byte -> string conversions.
This commit is contained in:
parent
882ba8d0bb
commit
ea7fc45209
5
README
5
README
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@ -12,13 +12,14 @@
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DEPENDENCIES
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DEPENDENCIES
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================================================================================
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================================================================================
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goinstall github.com/sloonz/go-iconv/src
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goinstall go-charset.googlecode.com/hg/charset
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================================================================================
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================================================================================
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USAGE
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USAGE
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================================================================================
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================================================================================
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Getting the package up and running is simple enough:
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Getting the package up and running is simple enough. This should also
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automatically take care of any dependencies for you:
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$ goinstall github.com/jteeuwen/go-pkg-xmlx
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$ goinstall github.com/jteeuwen/go-pkg-xmlx
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186
document.go
186
document.go
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@ -28,24 +28,26 @@ import (
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"os"
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"os"
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"io"
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"io"
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"io/ioutil"
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"io/ioutil"
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"path"
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"strings"
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"strings"
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"bytes"
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"xml"
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"xml"
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"fmt"
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"fmt"
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"http"
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"http"
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iconv "github.com/sloonz/go-iconv/src"
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"go-charset.googlecode.com/hg/charset"
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)
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)
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// represents a single XML document.
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type Document struct {
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type Document struct {
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Version string
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Version string // XML version
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Encoding string
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Encoding string // Encoding found in document. If absent, assumes UTF-8.
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StandAlone string
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StandAlone string // Value of XML doctype's 'standalone' attribute.
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SaveDocType bool
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SaveDocType bool // Whether not to include the XML doctype in saves.
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Root *Node
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Root *Node // The document's root node.
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Entity map[string]string
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Entity map[string]string // Mapping of custom entity conversions.
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Verbose bool
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Verbose bool // [depracated] Not actually used anymore.
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}
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}
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// Create a new, empty XML document instance.
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func New() *Document {
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func New() *Document {
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return &Document{
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return &Document{
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Version: "1.0",
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Version: "1.0",
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@ -53,7 +55,6 @@ func New() *Document {
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StandAlone: "yes",
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StandAlone: "yes",
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SaveDocType: true,
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SaveDocType: true,
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Entity: make(map[string]string),
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Entity: make(map[string]string),
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Verbose: false,
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}
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}
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}
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}
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@ -64,50 +65,38 @@ func New() *Document {
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// defined on http://www.w3.org/TR/html4/sgml/entities.html
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// defined on http://www.w3.org/TR/html4/sgml/entities.html
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func (this *Document) LoadExtendedEntityMap() { loadNonStandardEntities(this.Entity) }
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func (this *Document) LoadExtendedEntityMap() { loadNonStandardEntities(this.Entity) }
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func (this *Document) String() string {
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// Select a single node with the given namespace and name. Returns nil if no
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s, _ := this.SaveString()
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// matching node was found.
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return s
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}
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func (this *Document) SelectNode(namespace, name string) *Node {
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func (this *Document) SelectNode(namespace, name string) *Node {
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return this.Root.SelectNode(namespace, name)
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return this.Root.SelectNode(namespace, name)
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}
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}
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// Select all nodes with the given namespace and name. Returns an empty slice
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// if no matches were found.
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func (this *Document) SelectNodes(namespace, name string) []*Node {
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func (this *Document) SelectNodes(namespace, name string) []*Node {
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return this.Root.SelectNodes(namespace, name)
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return this.Root.SelectNodes(namespace, name)
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}
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}
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// *****************************************************************************
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// Load the contents of this document from the supplied reader.
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// *** Satisfy ILoader interface
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func (this *Document) LoadStream(r io.Reader) (err os.Error) {
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// *****************************************************************************
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xp := xml.NewParser(r)
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func (this *Document) LoadString(s string) (err os.Error) {
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// Ensure we are passing UTF-8 encoding content to the XML tokenizer.
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if s, err = this.correctEncoding(s); err != nil {
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return
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}
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// tokenize data
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xp := xml.NewParser(strings.NewReader(s))
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xp.Entity = this.Entity
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xp.Entity = this.Entity
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xp.CharsetReader = func(enc string, input io.Reader) (io.Reader, os.Error) {
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return charset.NewReader(enc, input)
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}
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this.Root = NewNode(NT_ROOT)
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this.Root = NewNode(NT_ROOT)
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ct := this.Root
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ct := this.Root
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var tok xml.Token
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var tok xml.Token
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var t *Node
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var t *Node
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var i int
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var doctype string
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var doctype string
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var v xml.Attr
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for {
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for {
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if tok, err = xp.Token(); err != nil {
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if tok, err = xp.Token(); err != nil {
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if err == os.EOF {
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if err == os.EOF {
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return nil
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return nil
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}
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}
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if this.Verbose {
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fmt.Fprintf(os.Stderr, "Xml Error: %s\n", err)
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}
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return err
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return err
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}
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}
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@ -128,7 +117,7 @@ func (this *Document) LoadString(s string) (err os.Error) {
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t = NewNode(NT_ELEMENT)
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t = NewNode(NT_ELEMENT)
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t.Name = tt.Name
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t.Name = tt.Name
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t.Attributes = make([]*Attr, len(tt.Attr))
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t.Attributes = make([]*Attr, len(tt.Attr))
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for i, v = range tt.Attr {
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for i, v := range tt.Attr {
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t.Attributes[i] = new(Attr)
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t.Attributes[i] = new(Attr)
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t.Attributes[i].Name = v.Name
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t.Attributes[i].Name = v.Name
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t.Attributes[i].Value = v.Value
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t.Attributes[i].Value = v.Value
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@ -138,7 +127,7 @@ func (this *Document) LoadString(s string) (err os.Error) {
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case xml.ProcInst:
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case xml.ProcInst:
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if tt.Target == "xml" { // xml doctype
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if tt.Target == "xml" { // xml doctype
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doctype = strings.TrimSpace(string(tt.Inst))
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doctype = strings.TrimSpace(string(tt.Inst))
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if i = strings.Index(doctype, `standalone="`); i > -1 {
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if i := strings.Index(doctype, `standalone="`); i > -1 {
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this.StandAlone = doctype[i+len(`standalone="`) : len(doctype)]
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this.StandAlone = doctype[i+len(`standalone="`) : len(doctype)]
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i = strings.Index(this.StandAlone, `"`)
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i = strings.Index(this.StandAlone, `"`)
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this.StandAlone = this.StandAlone[0:i]
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this.StandAlone = this.StandAlone[0:i]
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@ -159,16 +148,28 @@ func (this *Document) LoadString(s string) (err os.Error) {
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return
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return
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}
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}
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func (this *Document) LoadFile(filename string) (err os.Error) {
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// Load the contents of this document from the supplied byte slice.
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var data []byte
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func (this *Document) LoadBytes(d []byte) (err os.Error) {
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return this.LoadStream(bytes.NewBuffer(d))
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}
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if data, err = ioutil.ReadFile(path.Clean(filename)); err != nil {
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// Load the contents of this document from the supplied string.
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func (this *Document) LoadString(s string) (err os.Error) {
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return this.LoadStream(strings.NewReader(s))
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}
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// Load the contents of this document from the supplied file.
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func (this *Document) LoadFile(filename string) (err os.Error) {
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var fd *os.File
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if fd, err = os.Open(filename); err != nil {
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return
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return
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}
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}
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return this.LoadString(string(data))
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defer fd.Close()
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return this.LoadStream(fd)
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}
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}
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// Load the contents of this document from the supplied uri.
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func (this *Document) LoadUri(uri string) (err os.Error) {
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func (this *Document) LoadUri(uri string) (err os.Error) {
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var r *http.Response
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var r *http.Response
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if r, _, err = http.Get(uri); err != nil {
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if r, _, err = http.Get(uri); err != nil {
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@ -176,105 +177,36 @@ func (this *Document) LoadUri(uri string) (err os.Error) {
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}
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}
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defer r.Body.Close()
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defer r.Body.Close()
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return this.LoadStream(r.Body)
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var b []byte
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if b, err = ioutil.ReadAll(r.Body); err != nil {
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return
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}
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}
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return this.LoadString(string(b))
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// Save the contents of this document to the supplied file.
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func (this *Document) SaveFile(path string) os.Error {
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return ioutil.WriteFile(path, this.SaveBytes(), 0600)
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}
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}
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func (this *Document) LoadStream(r io.Reader) (err os.Error) {
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// Save the contents of this document as a byte slice.
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var b []byte
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func (this *Document) SaveBytes() []byte {
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if b, err = ioutil.ReadAll(r); err != nil {
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var b bytes.Buffer
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return
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}
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return this.LoadString(string(b))
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}
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// *****************************************************************************
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// *** Satisfy ISaver interface
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// *****************************************************************************
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func (this *Document) SaveFile(path string) (err os.Error) {
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var data string
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if data, err = this.SaveString(); err != nil {
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return
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}
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return ioutil.WriteFile(path, []byte(data), 0600)
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}
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func (this *Document) SaveString() (s string, err os.Error) {
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if this.SaveDocType {
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if this.SaveDocType {
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s = fmt.Sprintf(`<?xml version="%s" encoding="%s" standalone="%s"?>`,
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b.WriteString(fmt.Sprintf(`<?xml version="%s" encoding="%s" standalone="%s"?>`,
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this.Version, this.Encoding, this.StandAlone)
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this.Version, this.Encoding, this.StandAlone))
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}
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}
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s += this.Root.String()
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b.Write(this.Root.Bytes())
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return
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return b.Bytes()
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}
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}
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// Save the contents of this document as a string.
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func (this *Document) SaveString() string { return string(this.SaveBytes()) }
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// Alias for Document.SaveString(). This one is invoked by anything looking for
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// the standard String() method (eg: fmt.Printf("%s\n", mydoc).
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func (this *Document) String() string { return string(this.SaveBytes()) }
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// Save the contents of this document to the supplied writer.
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func (this *Document) SaveStream(w io.Writer) (err os.Error) {
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func (this *Document) SaveStream(w io.Writer) (err os.Error) {
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var s string
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_, err = w.Write(this.SaveBytes())
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if s, err = this.SaveString(); err != nil {
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return
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return
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}
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}
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_, err = w.Write([]byte(s))
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return
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}
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// Use libiconv to ensure we get UTF-8 encoded data. The Go Xml tokenizer will
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// throw a tantrum if we give it anything else.
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func (this *Document) correctEncoding(data string) (ret string, err os.Error) {
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var cd *iconv.Iconv
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var tok xml.Token
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enc := "utf-8"
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xp := xml.NewParser(strings.NewReader(data))
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xp.Entity = this.Entity
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loop:
|
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for {
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|
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if tok, err = xp.Token(); err != nil {
|
|
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if err == os.EOF {
|
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break loop
|
|
||||||
}
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|
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return "", err
|
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}
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|
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|
|
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switch tt := tok.(type) {
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|
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case xml.ProcInst:
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|
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if tt.Target == "xml" { // xml doctype
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var pair []string
|
|
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var entry string
|
|
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|
|
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list := strings.Split(string(tt.Inst), " ", -1)
|
|
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for _, entry = range list {
|
|
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if pair = strings.Split(entry, "=", -1); len(pair) < 2 {
|
|
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continue
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|
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}
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|
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switch pair[0] {
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|
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case "encoding":
|
|
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enc = pair[1][1 : len(pair[1])-1]
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|
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break loop
|
|
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}
|
|
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}
|
|
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}
|
|
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}
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|
||||||
}
|
|
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|
|
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if strings.ToLower(enc) == "utf-8" {
|
|
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// Data already in utf-8 format. Nothing to do here.
|
|
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return data, nil
|
|
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}
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|
||||||
|
|
||||||
if cd, err = iconv.Open("utf-8", enc); err != nil {
|
|
||||||
return
|
|
||||||
}
|
|
||||||
|
|
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defer cd.Close()
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|
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return cd.Conv(data)
|
|
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}
|
|
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|
|
178
node.go
178
node.go
|
@ -6,7 +6,6 @@ package xmlx
|
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|
|
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import (
|
import (
|
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"os"
|
"os"
|
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"strings"
|
|
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"xml"
|
"xml"
|
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"bytes"
|
"bytes"
|
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"fmt"
|
"fmt"
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|
@ -22,18 +21,18 @@ const (
|
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)
|
)
|
||||||
|
|
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type Attr struct {
|
type Attr struct {
|
||||||
Name xml.Name
|
Name xml.Name // Attribute namespace and name.
|
||||||
Value string
|
Value string // Attribute value.
|
||||||
}
|
}
|
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|
|
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type Node struct {
|
type Node struct {
|
||||||
Type byte
|
Type byte // Node type.
|
||||||
Name xml.Name
|
Name xml.Name // Node namespace and name.
|
||||||
Children []*Node
|
Children []*Node // Child nodes.
|
||||||
Attributes []*Attr
|
Attributes []*Attr // Node attributes.
|
||||||
Parent *Node
|
Parent *Node // Parent node.
|
||||||
Value string
|
Value string // Node value.
|
||||||
Target string // procinst field
|
Target string // procinst field.
|
||||||
}
|
}
|
||||||
|
|
||||||
func NewNode(tid byte) *Node {
|
func NewNode(tid byte) *Node {
|
||||||
|
@ -47,7 +46,7 @@ func NewNode(tid byte) *Node {
|
||||||
// This wraps the standard xml.Unmarshal function and supplies this particular
|
// This wraps the standard xml.Unmarshal function and supplies this particular
|
||||||
// node as the content to be unmarshalled.
|
// node as the content to be unmarshalled.
|
||||||
func (this *Node) Unmarshal(obj interface{}) os.Error {
|
func (this *Node) Unmarshal(obj interface{}) os.Error {
|
||||||
return xml.Unmarshal(strings.NewReader(this.String()), obj)
|
return xml.Unmarshal(bytes.NewBuffer(this.Bytes()), obj)
|
||||||
}
|
}
|
||||||
|
|
||||||
// Get node value as string
|
// Get node value as string
|
||||||
|
@ -58,10 +57,6 @@ func (this *Node) S(namespace, name string) string {
|
||||||
return ""
|
return ""
|
||||||
}
|
}
|
||||||
|
|
||||||
// Deprecated - use Node.S()
|
|
||||||
func (this *Node) GetValue(namespace, name string) string { return this.S(namespace, name) }
|
|
||||||
|
|
||||||
|
|
||||||
// Get node value as int
|
// Get node value as int
|
||||||
func (this *Node) I(namespace, name string) int {
|
func (this *Node) I(namespace, name string) int {
|
||||||
if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
|
if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
|
||||||
|
@ -71,10 +66,6 @@ func (this *Node) I(namespace, name string) int {
|
||||||
return 0
|
return 0
|
||||||
}
|
}
|
||||||
|
|
||||||
// Deprecated - use Node.I()
|
|
||||||
func (this *Node) GetValuei(namespace, name string) int { return this.I(namespace, name) }
|
|
||||||
|
|
||||||
|
|
||||||
// Get node value as int64
|
// Get node value as int64
|
||||||
func (this *Node) I64(namespace, name string) int64 {
|
func (this *Node) I64(namespace, name string) int64 {
|
||||||
if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
|
if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
|
||||||
|
@ -84,10 +75,6 @@ func (this *Node) I64(namespace, name string) int64 {
|
||||||
return 0
|
return 0
|
||||||
}
|
}
|
||||||
|
|
||||||
// Deprecated - use Node.I64()
|
|
||||||
func (this *Node) GetValuei64(namespace, name string) int64 { return this.I64(namespace, name) }
|
|
||||||
|
|
||||||
|
|
||||||
// Get node value as uint
|
// Get node value as uint
|
||||||
func (this *Node) U(namespace, name string) uint {
|
func (this *Node) U(namespace, name string) uint {
|
||||||
if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
|
if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
|
||||||
|
@ -97,10 +84,6 @@ func (this *Node) U(namespace, name string) uint {
|
||||||
return 0
|
return 0
|
||||||
}
|
}
|
||||||
|
|
||||||
// Deprecated - use Node.U()
|
|
||||||
func (this *Node) GetValueui(namespace, name string) uint { return this.U(namespace, name) }
|
|
||||||
|
|
||||||
|
|
||||||
// Get node value as uint64
|
// Get node value as uint64
|
||||||
func (this *Node) U64(namespace, name string) uint64 {
|
func (this *Node) U64(namespace, name string) uint64 {
|
||||||
if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
|
if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
|
||||||
|
@ -110,9 +93,6 @@ func (this *Node) U64(namespace, name string) uint64 {
|
||||||
return 0
|
return 0
|
||||||
}
|
}
|
||||||
|
|
||||||
// Deprecated - use Node.U64()
|
|
||||||
func (this *Node) GetValueui64(namespace, name string) uint64 { return this.U64(namespace, name) }
|
|
||||||
|
|
||||||
// Get node value as float32
|
// Get node value as float32
|
||||||
func (this *Node) F32(namespace, name string) float32 {
|
func (this *Node) F32(namespace, name string) float32 {
|
||||||
if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
|
if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
|
||||||
|
@ -122,10 +102,6 @@ func (this *Node) F32(namespace, name string) float32 {
|
||||||
return 0
|
return 0
|
||||||
}
|
}
|
||||||
|
|
||||||
// Deprecated - use Node.F32()
|
|
||||||
func (this *Node) GetValuef32(namespace, name string) float32 { return this.F32(namespace, name) }
|
|
||||||
|
|
||||||
|
|
||||||
// Get node value as float64
|
// Get node value as float64
|
||||||
func (this *Node) F64(namespace, name string) float64 {
|
func (this *Node) F64(namespace, name string) float64 {
|
||||||
if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
|
if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
|
||||||
|
@ -135,10 +111,6 @@ func (this *Node) F64(namespace, name string) float64 {
|
||||||
return 0
|
return 0
|
||||||
}
|
}
|
||||||
|
|
||||||
// Deprecated - use Node.F64()
|
|
||||||
func (this *Node) GetValuef64(namespace, name string) float64 { return this.F64(namespace, name) }
|
|
||||||
|
|
||||||
|
|
||||||
// Get node value as bool
|
// Get node value as bool
|
||||||
func (this *Node) B(namespace, name string) bool {
|
func (this *Node) B(namespace, name string) bool {
|
||||||
if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
|
if node := rec_SelectNode(this, namespace, name); node != nil && node.Value != "" {
|
||||||
|
@ -158,10 +130,6 @@ func (this *Node) As(namespace, name string) string {
|
||||||
return ""
|
return ""
|
||||||
}
|
}
|
||||||
|
|
||||||
// Deprecated - use Node.As()
|
|
||||||
func (this *Node) GetAttr(namespace, name string) string { return this.As(namespace, name) }
|
|
||||||
|
|
||||||
|
|
||||||
// Get attribute value as int
|
// Get attribute value as int
|
||||||
func (this *Node) Ai(namespace, name string) int {
|
func (this *Node) Ai(namespace, name string) int {
|
||||||
if s := this.As(namespace, name); s != "" {
|
if s := this.As(namespace, name); s != "" {
|
||||||
|
@ -171,10 +139,6 @@ func (this *Node) Ai(namespace, name string) int {
|
||||||
return 0
|
return 0
|
||||||
}
|
}
|
||||||
|
|
||||||
// Deprecated - use Node.Ai()
|
|
||||||
func (this *Node) GetAttri(namespace, name string) int { return this.Ai(namespace, name) }
|
|
||||||
|
|
||||||
|
|
||||||
// Get attribute value as uint
|
// Get attribute value as uint
|
||||||
func (this *Node) Au(namespace, name string) uint {
|
func (this *Node) Au(namespace, name string) uint {
|
||||||
if s := this.As(namespace, name); s != "" {
|
if s := this.As(namespace, name); s != "" {
|
||||||
|
@ -184,10 +148,6 @@ func (this *Node) Au(namespace, name string) uint {
|
||||||
return 0
|
return 0
|
||||||
}
|
}
|
||||||
|
|
||||||
// Deprecated - use Node.Au()
|
|
||||||
func (this *Node) GetAttrui(namespace, name string) uint { return this.Au(namespace, name) }
|
|
||||||
|
|
||||||
|
|
||||||
// Get attribute value as uint64
|
// Get attribute value as uint64
|
||||||
func (this *Node) Au64(namespace, name string) uint64 {
|
func (this *Node) Au64(namespace, name string) uint64 {
|
||||||
if s := this.As(namespace, name); s != "" {
|
if s := this.As(namespace, name); s != "" {
|
||||||
|
@ -197,10 +157,6 @@ func (this *Node) Au64(namespace, name string) uint64 {
|
||||||
return 0
|
return 0
|
||||||
}
|
}
|
||||||
|
|
||||||
// Deprecated - use Node.Au64()
|
|
||||||
func (this *Node) GetAttrui64(namespace, name string) uint64 { return this.Au64(namespace, name) }
|
|
||||||
|
|
||||||
|
|
||||||
// Get attribute value as int64
|
// Get attribute value as int64
|
||||||
func (this *Node) Ai64(namespace, name string) int64 {
|
func (this *Node) Ai64(namespace, name string) int64 {
|
||||||
if s := this.As(namespace, name); s != "" {
|
if s := this.As(namespace, name); s != "" {
|
||||||
|
@ -210,9 +166,6 @@ func (this *Node) Ai64(namespace, name string) int64 {
|
||||||
return 0
|
return 0
|
||||||
}
|
}
|
||||||
|
|
||||||
// Deprecated - use Node.Ai64()
|
|
||||||
func (this *Node) GetAttri64(namespace, name string) int64 { return this.Ai64(namespace, name) }
|
|
||||||
|
|
||||||
// Get attribute value as float32
|
// Get attribute value as float32
|
||||||
func (this *Node) Af32(namespace, name string) float32 {
|
func (this *Node) Af32(namespace, name string) float32 {
|
||||||
if s := this.As(namespace, name); s != "" {
|
if s := this.As(namespace, name); s != "" {
|
||||||
|
@ -222,9 +175,6 @@ func (this *Node) Af32(namespace, name string) float32 {
|
||||||
return 0
|
return 0
|
||||||
}
|
}
|
||||||
|
|
||||||
// Deprecated - use Node.Af32()
|
|
||||||
func (this *Node) GetAttrf32(namespace, name string) float32 { return this.Af32(namespace, name) }
|
|
||||||
|
|
||||||
// Get attribute value as float64
|
// Get attribute value as float64
|
||||||
func (this *Node) Af64(namespace, name string) float64 {
|
func (this *Node) Af64(namespace, name string) float64 {
|
||||||
if s := this.As(namespace, name); s != "" {
|
if s := this.As(namespace, name); s != "" {
|
||||||
|
@ -234,10 +184,6 @@ func (this *Node) Af64(namespace, name string) float64 {
|
||||||
return 0
|
return 0
|
||||||
}
|
}
|
||||||
|
|
||||||
// Deprecated - use Node.Af64()
|
|
||||||
func (this *Node) GetAttrf64(namespace, name string) float64 { return this.Af64(namespace, name) }
|
|
||||||
|
|
||||||
|
|
||||||
// Get attribute value as bool
|
// Get attribute value as bool
|
||||||
func (this *Node) Ab(namespace, name string) bool {
|
func (this *Node) Ab(namespace, name string) bool {
|
||||||
if s := this.As(namespace, name); s != "" {
|
if s := this.As(namespace, name); s != "" {
|
||||||
|
@ -298,94 +244,100 @@ func rec_SelectNodes(cn *Node, namespace, name string, list *[]*Node) {
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
// Convert node to appropriate []byte representation based on it's @Type.
|
||||||
|
// Note that NT_ROOT is a special-case empty node used as the root for a
|
||||||
|
// Document. This one has no representation by itself. It merely forwards the
|
||||||
|
// String() call to it's child nodes.
|
||||||
|
func (this *Node) Bytes() (b []byte) {
|
||||||
|
switch this.Type {
|
||||||
|
case NT_PROCINST:
|
||||||
|
b = this.printProcInst()
|
||||||
|
case NT_COMMENT:
|
||||||
|
b = this.printComment()
|
||||||
|
case NT_DIRECTIVE:
|
||||||
|
b = this.printDirective()
|
||||||
|
case NT_ELEMENT:
|
||||||
|
b = this.printElement()
|
||||||
|
case NT_ROOT:
|
||||||
|
b = this.printRoot()
|
||||||
|
}
|
||||||
|
return
|
||||||
|
}
|
||||||
|
|
||||||
// Convert node to appropriate string representation based on it's @Type.
|
// Convert node to appropriate string representation based on it's @Type.
|
||||||
// Note that NT_ROOT is a special-case empty node used as the root for a
|
// Note that NT_ROOT is a special-case empty node used as the root for a
|
||||||
// Document. This one has no representation by itself. It merely forwards the
|
// Document. This one has no representation by itself. It merely forwards the
|
||||||
// String() call to it's child nodes.
|
// String() call to it's child nodes.
|
||||||
func (this *Node) String() (s string) {
|
func (this *Node) String() (s string) {
|
||||||
switch this.Type {
|
return string(this.Bytes())
|
||||||
case NT_PROCINST:
|
|
||||||
s = this.printProcInst()
|
|
||||||
case NT_COMMENT:
|
|
||||||
s = this.printComment()
|
|
||||||
case NT_DIRECTIVE:
|
|
||||||
s = this.printDirective()
|
|
||||||
case NT_ELEMENT:
|
|
||||||
s = this.printElement()
|
|
||||||
case NT_ROOT:
|
|
||||||
s = this.printRoot()
|
|
||||||
}
|
|
||||||
return
|
|
||||||
}
|
}
|
||||||
|
|
||||||
func (this *Node) printRoot() (s string) {
|
func (this *Node) printRoot() []byte {
|
||||||
var data []byte
|
var b bytes.Buffer
|
||||||
buf := bytes.NewBuffer(data)
|
|
||||||
for _, v := range this.Children {
|
for _, v := range this.Children {
|
||||||
buf.WriteString(v.String())
|
b.WriteString(v.String())
|
||||||
}
|
}
|
||||||
return buf.String()
|
return b.Bytes()
|
||||||
}
|
}
|
||||||
|
|
||||||
func (this *Node) printProcInst() string {
|
func (this *Node) printProcInst() []byte {
|
||||||
return "<?" + this.Target + " " + this.Value + "?>"
|
return []byte("<?" + this.Target + " " + this.Value + "?>")
|
||||||
}
|
}
|
||||||
|
|
||||||
func (this *Node) printComment() string {
|
func (this *Node) printComment() []byte {
|
||||||
return "<!-- " + this.Value + " -->"
|
return []byte("<!-- " + this.Value + " -->")
|
||||||
}
|
}
|
||||||
|
|
||||||
func (this *Node) printDirective() string {
|
func (this *Node) printDirective() []byte {
|
||||||
return "<!" + this.Value + "!>"
|
return []byte("<!" + this.Value + "!>")
|
||||||
}
|
}
|
||||||
|
|
||||||
func (this *Node) printElement() string {
|
func (this *Node) printElement() []byte {
|
||||||
var data []byte
|
var b bytes.Buffer
|
||||||
buf := bytes.NewBuffer(data)
|
|
||||||
|
|
||||||
if len(this.Name.Space) > 0 {
|
if len(this.Name.Space) > 0 {
|
||||||
buf.WriteRune('<')
|
b.WriteRune('<')
|
||||||
buf.WriteString(this.Name.Space)
|
b.WriteString(this.Name.Space)
|
||||||
buf.WriteRune(':')
|
b.WriteRune(':')
|
||||||
buf.WriteString(this.Name.Local)
|
b.WriteString(this.Name.Local)
|
||||||
} else {
|
} else {
|
||||||
buf.WriteRune('<')
|
b.WriteRune('<')
|
||||||
buf.WriteString(this.Name.Local)
|
b.WriteString(this.Name.Local)
|
||||||
}
|
}
|
||||||
|
|
||||||
for _, v := range this.Attributes {
|
for _, v := range this.Attributes {
|
||||||
if len(v.Name.Space) > 0 {
|
if len(v.Name.Space) > 0 {
|
||||||
buf.WriteString(fmt.Sprintf(` %s:%s="%s"`, v.Name.Space, v.Name.Local, v.Value))
|
b.WriteString(fmt.Sprintf(` %s:%s="%s"`, v.Name.Space, v.Name.Local, v.Value))
|
||||||
} else {
|
} else {
|
||||||
buf.WriteString(fmt.Sprintf(` %s="%s"`, v.Name.Local, v.Value))
|
b.WriteString(fmt.Sprintf(` %s="%s"`, v.Name.Local, v.Value))
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
if len(this.Children) == 0 && len(this.Value) == 0 {
|
if len(this.Children) == 0 && len(this.Value) == 0 {
|
||||||
buf.WriteString(" />")
|
b.WriteString(" />")
|
||||||
return buf.String()
|
return b.Bytes()
|
||||||
}
|
}
|
||||||
|
|
||||||
buf.WriteRune('>')
|
b.WriteRune('>')
|
||||||
|
|
||||||
for _, v := range this.Children {
|
for _, v := range this.Children {
|
||||||
buf.WriteString(v.String())
|
b.WriteString(v.String())
|
||||||
}
|
}
|
||||||
|
|
||||||
buf.WriteString(this.Value)
|
b.WriteString(this.Value)
|
||||||
if len(this.Name.Space) > 0 {
|
if len(this.Name.Space) > 0 {
|
||||||
buf.WriteString("</")
|
b.WriteString("</")
|
||||||
buf.WriteString(this.Name.Space)
|
b.WriteString(this.Name.Space)
|
||||||
buf.WriteRune(':')
|
b.WriteRune(':')
|
||||||
buf.WriteString(this.Name.Local)
|
b.WriteString(this.Name.Local)
|
||||||
buf.WriteRune('>')
|
b.WriteRune('>')
|
||||||
} else {
|
} else {
|
||||||
buf.WriteString("</")
|
b.WriteString("</")
|
||||||
buf.WriteString(this.Name.Local)
|
b.WriteString(this.Name.Local)
|
||||||
buf.WriteRune('>')
|
b.WriteRune('>')
|
||||||
}
|
}
|
||||||
|
|
||||||
return buf.String()
|
return b.Bytes()
|
||||||
}
|
}
|
||||||
|
|
||||||
// Add a child node
|
// Add a child node
|
||||||
|
|
1
test.xml
1
test.xml
|
@ -1,4 +1,3 @@
|
||||||
<!DOCTYPE xml>
|
|
||||||
<?xml version="1.0" encoding="utf-8"?>
|
<?xml version="1.0" encoding="utf-8"?>
|
||||||
<rss version="0.91">
|
<rss version="0.91">
|
||||||
<channel>
|
<channel>
|
||||||
|
|
|
@ -1 +1 @@
|
||||||
<?xml version="1.0" encoding="utf-8" standalone="yes"?><!DOCTYPE xml!><rss version="0.91"><channel><title>WriteTheWeb</title><link>http://writetheweb.com</link><description>News for web users that write back</description><language>en-us</language><copyright>Copyright 2000, WriteTheWeb team.</copyright><managingEditor>editor@writetheweb.com</managingEditor><webMaster>webmaster@writetheweb.com</webMaster><image><title>WriteTheWeb</title><url>http://writetheweb.com/images/mynetscape88.gif</url><link>http://writetheweb.com</link><width>88</width><height>31</height><description>News for web users that write back</description></image><item><title>Giving the world a pluggable Gnutella</title><link>http://writetheweb.com/read.php?item=24</link><description>WorldOS is a framework on which to build programs that work like Freenet or Gnutella -allowing distributed applications using peer-to-peer routing.</description></item><item><title>Syndication discussions hot up</title><link>http://writetheweb.com/read.php?item=23</link><description>After a period of dormancy, the Syndication mailing list has become active again, with contributions from leaders in traditional media and Web syndication.</description></item><item><title>Personal web server integrates file sharing and messaging</title><link>http://writetheweb.com/read.php?item=22</link><description>The Magi Project is an innovative project to create a combined personal web server and messaging system that enables the sharing and synchronization of information across desktop, laptop and palmtop devices.</description></item><item><title>Syndication and Metadata</title><link>http://writetheweb.com/read.php?item=21</link><description>RSS is probably the best known metadata format around. RDF is probably one of the least understood. In this essay, published on my O'Reilly Network weblog, I argue that the next generation of RSS should be based on RDF.</description></item><item><title>UK bloggers get organised</title><link>http://writetheweb.com/read.php?item=20</link><description>Looks like the weblogs scene is gathering pace beyond the shores of the US. There's now a UK-specific page on weblogs.com, and a mailing list at egroups.</description></item><item><title>Yournamehere.com more important than anything</title><link>http://writetheweb.com/read.php?item=19</link><description>Whatever you're publishing on the web, your site name is the most valuable asset you have, according to Carl Steadman.</description></item></channel></rss>
|
<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="0.91"><channel><title>WriteTheWeb</title><link>http://writetheweb.com</link><description>News for web users that write back</description><language>en-us</language><copyright>Copyright 2000, WriteTheWeb team.</copyright><managingEditor>editor@writetheweb.com</managingEditor><webMaster>webmaster@writetheweb.com</webMaster><image><title>WriteTheWeb</title><url>http://writetheweb.com/images/mynetscape88.gif</url><link>http://writetheweb.com</link><width>88</width><height>31</height><description>News for web users that write back</description></image><item><title>Giving the world a pluggable Gnutella</title><link>http://writetheweb.com/read.php?item=24</link><description>WorldOS is a framework on which to build programs that work like Freenet or Gnutella -allowing distributed applications using peer-to-peer routing.</description></item><item><title>Syndication discussions hot up</title><link>http://writetheweb.com/read.php?item=23</link><description>After a period of dormancy, the Syndication mailing list has become active again, with contributions from leaders in traditional media and Web syndication.</description></item><item><title>Personal web server integrates file sharing and messaging</title><link>http://writetheweb.com/read.php?item=22</link><description>The Magi Project is an innovative project to create a combined personal web server and messaging system that enables the sharing and synchronization of information across desktop, laptop and palmtop devices.</description></item><item><title>Syndication and Metadata</title><link>http://writetheweb.com/read.php?item=21</link><description>RSS is probably the best known metadata format around. RDF is probably one of the least understood. In this essay, published on my O'Reilly Network weblog, I argue that the next generation of RSS should be based on RDF.</description></item><item><title>UK bloggers get organised</title><link>http://writetheweb.com/read.php?item=20</link><description>Looks like the weblogs scene is gathering pace beyond the shores of the US. There's now a UK-specific page on weblogs.com, and a mailing list at egroups.</description></item><item><title>Yournamehere.com more important than anything</title><link>http://writetheweb.com/read.php?item=19</link><description>Whatever you're publishing on the web, your site name is the most valuable asset you have, according to Carl Steadman.</description></item></channel></rss>
|
Loading…
Reference in New Issue