forked from TrueCloudLab/frostfs-s3-gw
49 lines
853 B
Go
49 lines
853 B
Go
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package xmlutils
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import (
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"bytes"
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"encoding/base64"
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"encoding/xml"
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"io"
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)
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type nopCloseWriter struct {
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io.Writer
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}
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func (b nopCloseWriter) Close() error {
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return nil
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}
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const (
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nonXML = "nonXML"
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typeXML = "application/xml"
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)
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func DetectXML(data []byte) string {
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token, err := xml.NewDecoder(bytes.NewReader(data)).RawToken()
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if err != nil {
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return nonXML
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}
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switch token.(type) {
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case xml.StartElement, xml.ProcInst:
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return typeXML
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}
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return nonXML
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}
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func ChooseWriter(dataType string, bodyWriter io.Writer) io.WriteCloser {
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if dataType == typeXML {
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return nopCloseWriter{bodyWriter}
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}
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return base64.NewEncoder(base64.StdEncoding, bodyWriter)
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}
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func ChooseReader(dataType string, bodyReader io.Reader) io.Reader {
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if dataType == typeXML {
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return bodyReader
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}
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return base64.NewDecoder(base64.StdEncoding, bodyReader)
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}
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