func main() {
inputReader := strings.NewReader(input)
decoder := xml.NewDecoder(inputReader)
for {
// Read tokens from the XML document in a stream.
t, _ := decoder.Token()
if t == nil {
break
}
// Inspect the type of the token just read.
//fmt.Printf("\n<!--%#v-->\n", t)
switch x := t.(type) {
case xml.StartElement:
fmt.Printf("<%s", x.Name.Local)
for _, attr := range x.Attr {
fmt.Printf(" %s=\"", attr.Name.Local)
xml.EscapeText(os.Stdout, []byte(attr.Value))
os.Stdout.Write([]byte{'"'})
}
fmt.Printf(">")
case xml.CharData:
xml.EscapeText(os.Stdout, bytes.TrimSpace(x))
case xml.EndElement:
fmt.Printf("</%s>\n", x.Name.Local)
}
}
}
func value_to_xml(v interface{}) (string, error) {
switch t := v.(type) {
case int, int8, int64, int32, *int, *int8, *int64, *int32:
return fmt.Sprintf("<int>%d</int>", t), nil
case string:
buf := bytes.NewBuffer(make([]byte, 0))
err := xml.EscapeText(buf, []byte(t))
if err != nil {
return "", err
}
return fmt.Sprintf("<string>%s</string>", buf.String()), nil
case []byte:
return fmt.Sprintf("<base64>%s</base64>", base64.StdEncoding.EncodeToString(t)), nil
case float32, float64, *float32, *float64:
return fmt.Sprintf("<double>%f</double>", t), nil
case bool:
return fmt.Sprintf("<boolean>%d</boolean>", btoi(t)), nil
case time.Time:
buf := bytes.NewBuffer(make([]byte, 0))
err := xml.EscapeText(buf, []byte(t.Format(time_ISO8601_FORMAT)))
if err != nil {
return "", err
}
return fmt.Sprintf("<dateTime.iso8601>%s</dateTime.iso8601>", buf.String()), nil
case *time.Time:
buf := bytes.NewBuffer(make([]byte, 0))
err := xml.EscapeText(buf, []byte(t.Format(time_ISO8601_FORMAT)))
if err != nil {
return "", err
}
return fmt.Sprintf("<dateTime.iso8601>%s</dateTime.iso8601>", buf.String()), nil
case []interface{}:
tmp_str_arr := []string{"<array><data>"}
for _, v := range t {
subval, err := value_to_xml(v)
if err != nil {
return "", err
}
tmp_str_arr = append(tmp_str_arr, fmt.Sprintf("<value>%s</value>", subval))
}
tmp_str_arr = append(tmp_str_arr, "</data></array>")
return strings.Join(tmp_str_arr, ""), nil
case map[string]interface{}:
tmp_str_arr := []string{"<struct>"}
for name, item := range t {
tmp_str_arr = append(tmp_str_arr, "<member>")
tmp_str_arr = append(tmp_str_arr, fmt.Sprintf("<name>%s</name>", name))
subval, err := value_to_xml(item)
if err != nil {
return "", err
}
tmp_str_arr = append(tmp_str_arr, fmt.Sprintf("<value>%s</value>", subval))
tmp_str_arr = append(tmp_str_arr, "</member>")
}
tmp_str_arr = append(tmp_str_arr, "</struct>")
return strings.Join(tmp_str_arr, ""), nil
default:
return "", errors.New("Unrecognized type")
}
}
func encodeDomainCheck(buf *bytes.Buffer, domains []string, extFee bool) error {
buf.Reset()
buf.WriteString(xmlCommandPrefix)
buf.WriteString(`<check>`)
buf.WriteString(`<domain:check xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">`)
for _, domain := range domains {
buf.WriteString(`<domain:name>`)
xml.EscapeText(buf, []byte(domain))
buf.WriteString(`</domain:name>`)
}
buf.WriteString(`</domain:check>`)
buf.WriteString(`</check>`)
if extFee {
// Extensions
buf.WriteString(`<extension>`)
// CentralNic fee extension
buf.WriteString(`<fee:check xmlns:fee="urn:ietf:params:xml:ns:fee-0.5">`)
for _, domain := range domains {
buf.WriteString(`<fee:domain>`)
buf.WriteString(`<fee:name>`)
xml.EscapeText(buf, []byte(domain))
buf.WriteString(`</fee:name>`)
buf.WriteString(`<fee:command>create</fee:command>`)
buf.WriteString(`</fee:domain>`)
}
buf.WriteString(`</fee:check>`)
buf.WriteString(`</extension>`)
}
buf.WriteString(xmlCommandSuffix)
return nil
}
// meh3
func genQuery(query string, args dict) []byte {
var out bytes.Buffer
out.WriteString("<query")
for key, val := range args {
fmt.Fprintf(&out, " %s=\"", key)
xml.EscapeText(&out, []byte(val))
out.WriteString("\"")
}
out.WriteString(">")
xml.EscapeText(&out, []byte(query))
out.WriteString("</query>\r\n.\r\n")
return out.Bytes()
}
// ToXML marshal map[string]string to xmlWriter with xml format, the root node name is xml.
// NOTE: This function assumes the key of m map[string]string are legitimate xml name string
// that does not contain the required escape character!
func (x *Xml) ToXML(xmlWriter io.Writer, m map[string]string) (err error) {
if xmlWriter == nil {
return errors.New("nil xmlWriter")
}
if _, err = io.WriteString(xmlWriter, "<xml>"); err != nil {
return
}
for k, v := range m {
if _, err = io.WriteString(xmlWriter, "<"+k+">"); err != nil {
return
}
if err = xml.EscapeText(xmlWriter, []byte(v)); err != nil {
return
}
if _, err = io.WriteString(xmlWriter, "</"+k+">"); err != nil {
return
}
}
if _, err = io.WriteString(xmlWriter, "</xml>"); err != nil {
return
}
return
}
func (w *Writer) WriteQuad(q quad.Quad) error {
if w.err != nil {
return w.err
}
if !w.written {
if _, err := w.w.Write([]byte(header)); err != nil {
return err
}
w.written = true
w.nodes = make(map[string]int)
}
s := w.writeNode(quad.StringOf(q.Subject))
o := w.writeNode(quad.StringOf(q.Object))
if w.err != nil {
return w.err
}
_, w.err = fmt.Fprintf(w.w, "\t\t<edge source=\"n%d\" target=\"n%d\"><data key=\"d1\">", s, o)
if w.err != nil {
return w.err
}
if w.err = xml.EscapeText(w.w, []byte(quad.StringOf(q.Predicate))); w.err != nil {
return w.err
}
_, w.err = w.w.Write([]byte("</data></edge>\n"))
return w.err
}
// Return an XML-RPC fault
func writeFault(out io.Writer, code int, msg string) {
fmt.Fprintf(out, `<?xml version="1.0"?>
<methodResponse>
<fault>
<value>
<struct>
<member>
<name>faultCode</name>
<value><int>%d</int></value>
</member>
<member>
<name>faultString</name>
<value>`, code)
err := xml.EscapeText(out, []byte(msg))
fmt.Fprintf(out, `</value>
</member>
</struct>
</value>
</fault>
</methodResponse>`)
// XXX dump the error to Stderr for now
if err != nil {
fmt.Fprintf(os.Stderr, "Cannot write fault#%d(%s): %v\n", code, msg,
err)
}
}
// The HTTP voice processing endpoint reads DTMF (input from Twilio request) and translates it into a statement and execute.
func (sh *WebShell) httpAPIVoiceMessage(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/xml")
w.Header().Set("Cache-Control", "must-revalidate")
w.WriteHeader(http.StatusOK)
digits := r.FormValue("Digits")
decodedLetters := voiceDecodeDTMF(digits)
log.Printf("Voice message got digits: %s (decoded - %s)", digits, decodedLetters)
if cmd := sh.cmdFind(decodedLetters); cmd == "" {
// PIN mismatch
w.Write([]byte(`<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Say>Sorry</Say>
<Hangup/>
</Response>
`))
} else {
// Speak the command result and repeat
output := sh.cmdRun(cmd, sh.WebTimeoutSec, sh.WebTruncateLen, true, true)
var escapeOutput bytes.Buffer
if err := xml.EscapeText(&escapeOutput, []byte(output)); err != nil {
log.Printf("XML escape failed - %v", err)
}
w.Write([]byte(fmt.Sprintf(`<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Gather action="%s%s" method="POST" timeout="15" finishOnKey="#" numDigits="1000">
<Say voice="man" loop="1" language="en">%s over</Say>
</Gather>
</Response>
`, sh.VoiceEndpointPrefix, sh.VoiceProcEndpoint, escapeOutput.String())))
}
}
func serializeItem(k string, v interface{}, w io.Writer) {
w.Write([]byte(`<item key="`))
xml.EscapeText(w, []byte(k))
w.Write([]byte(`">`))
switch i := v.(type) {
case string:
xml.EscapeText(w, []byte(i))
case NestedStringMap:
serializeMap(i, w)
case []NestedStringMap:
serializeNSMArray(i, w)
case []string:
serializeStringArray(i, w)
}
w.Write([]byte(`</item>`))
}
func (s *Shell) NewCommand(cmd string, arguments []string) (string, error) {
var buf = bytes.NewBuffer(make([]byte, 0, len(cmd)))
if e := xml.EscapeText(buf, []byte(cmd)); nil != e {
return "", e
}
env := &envelope.CreateCommand{Uuid(), s.Id, strings.Replace(buf.String(), """, """, -1), arguments}
reader, err := s.Deliver(bytes.NewBufferString(env.Xml()))
if err != nil {
return "", err
}
defer closeReader(reader)
decoder := xml.NewDecoder(reader)
if err := ReadEnvelopeBody(decoder); nil != err {
return "", err
}
ok, err := locateElements(decoder, []string{"CommandResponse", "CommandId"})
if nil != err {
return "", errors.New("locate 'Envelope/Body/CommandResponse/CommandId' failed, " + err.Error())
}
if !ok {
return "", ElementNotExists("Envelope/Body/CommandResponse/CommandId")
}
id, e := readXmlText(decoder)
if nil != e {
return "", errors.New("read CommandId from the response failed, " + e.Error())
}
return id, nil
}
// 格式化 map[string]string 为 xml 格式
// 用于微信支付
func FormatMapToXML(xmlWriter io.Writer, Map map[string]string) (err error) {
if xmlWriter == nil {
return errors.New("xmlWriter == nil")
}
_, err = io.WriteString(xmlWriter, "<xml>\n")
if err != nil {
return
}
for key, value := range Map {
_, err = io.WriteString(xmlWriter, "<"+key+">")
if err != nil {
return
}
if err = xml.EscapeText(xmlWriter, []byte(value)); err != nil {
return
}
_, err = io.WriteString(xmlWriter, "</"+key+">\n")
if err != nil {
return
}
}
_, err = io.WriteString(xmlWriter, "</xml>")
if err != nil {
return
}
return
}
func escapeXml(in string) string {
var out bytes.Buffer
err := xml.EscapeText(&out, []byte(in))
if err != nil {
panic("Could not escape XML: " + err.Error())
}
return out.String()
}
func (this *Node) printText() []byte {
val := []byte(this.Value)
if len(this.Parent.Children) > 1 {
return val
}
var b bytes.Buffer
xml.EscapeText(&b, val)
return b.Bytes()
}
func escapeXml(s string) string {
buf := new(bytes.Buffer)
buf.Grow(len(s))
err := xml.EscapeText(buf, []byte(s))
if err != nil {
panic(err)
}
return buf.String()
}
func escapeXmlText(s string) (string, error) {
buffer := new(bytes.Buffer)
err := xml.EscapeText(buffer, []byte(s))
if err != nil {
return "", err
}
return buffer.String(), nil
}
// encodeRequestAction is a hacky way to create an encoded SOAP envelope
// containing the given action. Experiments with one router have shown that it
// 500s for requests where the outer default xmlns is set to the SOAP
// namespace, and then reassigning the default namespace within that to the
// service namespace. Hand-coding the outer XML to work-around this.
func encodeRequestAction(actionNamespace, actionName string, inAction interface{}) ([]byte, error) {
requestBuf := new(bytes.Buffer)
requestBuf.WriteString(soapPrefix)
requestBuf.WriteString(`<u:`)
xml.EscapeText(requestBuf, []byte(actionName))
requestBuf.WriteString(` xmlns:u="`)
xml.EscapeText(requestBuf, []byte(actionNamespace))
requestBuf.WriteString(`">`)
if inAction != nil {
if err := encodeRequestArgs(requestBuf, inAction); err != nil {
return nil, err
}
}
requestBuf.WriteString(`</u:`)
xml.EscapeText(requestBuf, []byte(actionName))
requestBuf.WriteString(`>`)
requestBuf.WriteString(soapSuffix)
return requestBuf.Bytes(), nil
}
func (p Post) Excerpt() string {
r := regexp.MustCompile("<p>(.+?)</p>")
result := r.FindStringSubmatch(p.htmlContent)
if len(result) > 1 {
buf := new(bytes.Buffer)
xml.EscapeText(buf, []byte(result[1]))
return buf.String() + " ..."
}
return ""
}
// Connect connects and logs in to a vSphere host.
func Connect(host, user, pwd string) (*Vsphere, error) {
header := http.Header{
"Content-Type": []string{`text/xml; charset=UTF-8`},
"SOAPAction": []string{`"urn:vim25/5.5"`},
}
jar, err := cookiejar.New(nil)
if err != nil {
return nil, err
}
v := &Vsphere{
url: &url.URL{
Scheme: "https",
Host: host,
Path: "/sdk",
},
header: header,
client: &http.Client{
Timeout: time.Minute,
Transport: &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
},
},
cookies: jar,
}
uuid := struct {
UUID string `xml:"Body>RetrieveServiceContentResponse>returnval>about>instanceUuid"`
}{}
if err := v.call(soapConnect, &uuid); err != nil {
return nil, err
}
if uuid.UUID == "" {
return nil, fmt.Errorf("vsphere: no UUID during connect")
}
userbuf := new(bytes.Buffer)
pwdbuf := new(bytes.Buffer)
xml.EscapeText(userbuf, []byte(user))
xml.EscapeText(pwdbuf, []byte(pwd))
if err := v.call(fmt.Sprintf(soapLogin, userbuf, pwdbuf), nil); err != nil {
return nil, err
}
return v, nil
}
func escape(s string) string {
for i := 0; i < len(s); i++ {
switch s[i] {
case '"', '&', '\'', '<', '>':
b := bytes.NewBuffer(nil)
xml.EscapeText(b, []byte(s))
return b.String()
}
}
return s
}
func (res *Resources) SetColor(name, value string) *Resources {
for index, _ := range res.Colors {
if name == res.Colors[index].Name {
m := new(bytes.Buffer)
xml.EscapeText(m, []byte(value))
res.Colors[index].Value = m.String()
break
}
}
return res
}
func transformContainer(o *bytes.Buffer, cont *namedContainer) error {
var printName string
if cont.name != "" {
escapedNameBuf := bytes.NewBuffer(nil)
err := xml.EscapeText(escapedNameBuf, []byte(cont.name))
if err != nil {
return err
}
printName = fmt.Sprintf(" name=\"%s\"", escapedNameBuf.String())
}
data := cont.Data()
switch data.(type) {
case nil:
o.WriteString(fmt.Sprintf("<json:null%s />", printName))
case bool:
o.WriteString(fmt.Sprintf("<json:boolean%s>%t</json:boolean>", printName, data))
case json.Number:
o.WriteString(fmt.Sprintf("<json:number%s>%v</json:number>", printName, data))
case string:
o.WriteString(fmt.Sprintf("<json:string%s>%v</json:string>", printName, data))
case []interface{}:
o.WriteString(fmt.Sprintf("<json:array%s>", printName))
arrayChildren, err := cont.Children()
if err != nil {
return err
}
for _, child := range arrayChildren {
if err := transformContainer(o, &namedContainer{Container: child}); err != nil {
return err
}
}
o.WriteString("</json:array>")
case map[string]interface{}:
o.WriteString(fmt.Sprintf("<json:object%s>", printName))
if err := sortAndTransformObject(o, cont); err != nil {
return err
}
o.WriteString("</json:object>")
}
return nil
}
func (xf xfdf) WriteTo(w io.Writer) (int64, error) {
cew := &countErrWriter{w: w}
if _, err := io.WriteString(cew, `<?xml version="1.0" encoding="UTF-8"?>
<xfdf xmlns="http://ns.adobe.com/xfdf/" xml:space="preserve">
<fields>
`); err != nil {
return cew.n, err
}
for _, key := range xf.Fields {
io.WriteString(cew, ` <field name="`)
cew.err = xml.EscapeText(cew, []byte(key))
io.WriteString(cew, `"><value>`)
cew.err = xml.EscapeText(cew, []byte(""))
io.WriteString(cew, "</value></field>\n")
if cew.err != nil {
return cew.n, cew.err
}
}
io.WriteString(cew, ` </fields>
</xfdf>`)
return cew.n, cew.err
}
func xml_addrs(w http.ResponseWriter, r *http.Request) {
if !ipchecker(r) {
return
}
w.Header()["Content-Type"] = []string{"text/xml"}
w.Write([]byte("<addrbook>"))
// Address Book
book := wallet.LoadWalfile(common.GocoinHomeDir+"wallet/"+wallet.AddrBookFileName, 0)
for i := range book {
w.Write([]byte("<entry>"))
w.Write([]byte("<addr>" + book[i].Enc58str + "</addr>"))
w.Write([]byte("<label>"))
xml.EscapeText(w, []byte(book[i].Extra.Label))
w.Write([]byte("</label>"))
w.Write([]byte("<wallet>"))
xml.EscapeText(w, []byte(book[i].Extra.Wallet))
w.Write([]byte("</wallet>"))
w.Write([]byte("</entry>"))
}
w.Write([]byte("</addrbook>"))
}
func (x *xmlObj) marshal() []byte {
b := new(bytes.Buffer)
for i := 0; i < len(x.xt); i++ {
switch token := x.xt[i].token.(type) {
case xml.StartElement:
if token.Name.Space == "" {
b.WriteString("<" + token.Name.Local)
} else {
b.WriteString("<" + token.Name.Space + ":" + token.Name.Local)
}
for _, attr := range token.Attr {
b.WriteByte(' ')
if attr.Name.Space == "" {
b.WriteString(attr.Name.Local + "=\"" + attr.Value + "\"")
} else {
b.WriteString(attr.Name.Space + ":" + attr.Name.Local + "=\"" + attr.Value + "\"")
}
}
b.WriteByte('>')
case xml.EndElement:
if token.Name.Space == "" {
b.WriteString("</" + token.Name.Local)
} else {
b.WriteString("</" + token.Name.Space + ":" + token.Name.Local)
}
b.WriteByte('>')
case xml.CharData:
if x.xt[i].isData {
xml.EscapeText(b, token)
} else {
b.Write(token)
}
case xml.ProcInst:
b.WriteString("<?" + token.Target + " ")
b.Write(token.Inst)
b.WriteString("?>")
case xml.Directive:
b.WriteString("<!")
b.Write(token)
b.WriteString(">")
case xml.Comment:
b.WriteString("<!--")
b.Write(token)
b.WriteString("-->")
}
}
return b.Bytes()
}
func encodeDomainInfo(buf *bytes.Buffer, domain string) error {
buf.Reset()
buf.WriteString(xmlCommandPrefix)
buf.WriteString(`<info>`)
buf.WriteString(`<domain:info xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">`)
buf.WriteString(`<domain:name>`)
xml.EscapeText(buf, []byte(domain))
buf.WriteString(`</domain:name>`)
buf.WriteString(`</domain:info>`)
buf.WriteString(`</info>`)
buf.WriteString(xmlCommandSuffix)
return nil
}
func (this *Node) printElement() []byte {
var b bytes.Buffer
if len(this.Name.Space) > 0 {
b.WriteRune('<')
b.WriteString(this.Name.Space)
b.WriteRune(':')
b.WriteString(this.Name.Local)
} else {
b.WriteRune('<')
b.WriteString(this.Name.Local)
}
for _, v := range this.Attributes {
if len(v.Name.Space) > 0 {
prefix := this.spacePrefix(v.Name.Space)
b.WriteString(fmt.Sprintf(` %s:%s="%s"`, prefix, v.Name.Local, v.Value))
} else {
b.WriteString(fmt.Sprintf(` %s="%s"`, v.Name.Local, v.Value))
}
}
if len(this.Children) == 0 && len(this.Value) == 0 {
b.WriteString(" />")
return b.Bytes()
}
b.WriteRune('>')
for _, v := range this.Children {
b.Write(v.bytes())
}
xml.EscapeText(&b, []byte(this.Value))
if len(this.Name.Space) > 0 {
b.WriteString("</")
b.WriteString(this.Name.Space)
b.WriteRune(':')
b.WriteString(this.Name.Local)
b.WriteRune('>')
} else {
b.WriteString("</")
b.WriteString(this.Name.Local)
b.WriteRune('>')
}
return b.Bytes()
}
// Look for command to execute from request body. The request/response content conform to Twilio SMS hook requirements.
func (sh *WebShell) httpAPIMessage(w http.ResponseWriter, r *http.Request) {
if cmd := sh.cmdFind(r.FormValue("Body")); cmd == "" {
// No match, don't give much clue to the client though.
http.Error(w, "404 page not found", http.StatusNotFound)
} else {
output := sh.cmdRun(cmd, sh.WebTimeoutSec, sh.WebTruncateLen, true, true)
var escapeOutput bytes.Buffer
if err := xml.EscapeText(&escapeOutput, []byte(output)); err != nil {
log.Printf("XML escape failed - %v", err)
}
w.Header().Set("Content-Type", "text/xml")
w.Header().Set("Cache-Control", "must-revalidate")
w.WriteHeader(http.StatusOK)
w.Write([]byte(fmt.Sprintf(`<?xml version="1.0" encoding="UTF-8"?>
<Response><Message>%s</Message></Response>
`, escapeOutput.String())))
}
}
func encodeDomainUpdateDS(buf *bytes.Buffer, domain string, add []DSRecord, rem []DSRecord) error {
buf.Reset()
buf.WriteString(xmlCommandPrefix)
buf.WriteString(`<update>`)
buf.WriteString(`<domain:update xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">`)
buf.WriteString(`<domain:name>`)
xml.EscapeText(buf, []byte(domain))
buf.WriteString(`</domain:name>`)
buf.WriteString(`</domain:update>`)
buf.WriteString(`</update>`)
buf.WriteString(`<extension>`)
buf.WriteString(`<secDNS:update xmlns:secDNS="urn:ietf:params:xml:ns:secDNS-1.1">`)
if len(rem) > 0 {
buf.WriteString(`<secDNS:rem>`)
for _, dsr := range rem {
buf.WriteString(`<secDNS:dsData>`)
buf.WriteString(fmt.Sprintf(`<secDNS:keyTag>%d</secDNS:keyTag>`, dsr.KeyTag))
buf.WriteString(fmt.Sprintf(`<secDNS:alg>%d</secDNS:alg>`, dsr.Algorithm))
buf.WriteString(fmt.Sprintf(`<secDNS:digestType>%d</secDNS:digestType>`, dsr.DigestType))
buf.WriteString(fmt.Sprintf(`<secDNS:digest>%s</secDNS:digest>`, dsr.Digest))
buf.WriteString(`</secDNS:dsData>`)
}
buf.WriteString(`</secDNS:rem>`)
}
if len(add) > 0 {
buf.WriteString(`<secDNS:add>`)
for _, dsr := range add {
buf.WriteString(`<secDNS:dsData>`)
buf.WriteString(fmt.Sprintf(`<secDNS:keyTag>%d</secDNS:keyTag>`, dsr.KeyTag))
buf.WriteString(fmt.Sprintf(`<secDNS:alg>%d</secDNS:alg>`, dsr.Algorithm))
buf.WriteString(fmt.Sprintf(`<secDNS:digestType>%d</secDNS:digestType>`, dsr.DigestType))
buf.WriteString(fmt.Sprintf(`<secDNS:digest>%s</secDNS:digest>`, dsr.Digest))
buf.WriteString(`</secDNS:dsData>`)
}
buf.WriteString(`</secDNS:add>`)
}
buf.WriteString(`</secDNS:update>`)
buf.WriteString(`</extension>`)
buf.WriteString(xmlCommandSuffix)
return nil
}
func escapeXML(s string) string {
for i := 0; i < len(s); i++ {
// As an optimization, if s contains only ASCII letters, digits or a
// few special characters, the escaped value is s itself and we don't
// need to allocate a buffer and convert between string and []byte.
switch c := s[i]; {
case c == ' ' || c == '_' ||
('+' <= c && c <= '9') || // Digits as well as + , - . and /
('A' <= c && c <= 'Z') ||
('a' <= c && c <= 'z'):
continue
}
// Otherwise, go through the full escaping process.
var buf bytes.Buffer
xml.EscapeText(&buf, []byte(s))
return buf.String()
}
return s
}
func (e *Encoder) Attribute(space, local, value string) error {
var err error
if e.openStartTag {
aname := local
if space != "" {
prefix, ok := e.namespaces[space]
if !ok || prefix == "" {
return errors.New("no prefix for namespace " + space)
}
aname = prefix + ":" + local
}
if _, err = e.w.WriteString(" " + aname + `="`); err == nil {
if err = xml.EscapeText(e.w, []byte(value)); err == nil {
_, err = e.w.WriteString(`"`)
}
}
} else {
err = errors.New(`attribute after ">"`)
}
return err
}