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package format
import (
"bufio"
"bytes"
"strconv"
"gopkg.in/mcuadros/go-syslog.v2/internal/syslogparser/rfc5424"
)
type RFC6587 struct{}
func (f *RFC6587) GetParser(line []byte) LogParser {
return &parserWrapper{rfc5424.NewParser(line)}
}
func (f *RFC6587) GetSplitFunc() bufio.SplitFunc {
return rfc6587ScannerSplit
}
func rfc6587ScannerSplit(data []byte, atEOF bool) (advance int, token []byte, err error) {
if atEOF && len(data) == 0 {
return 0, nil, nil
}
if i := bytes.IndexByte(data, ' '); i > 0 {
pLength := data[0:i]
length, err := strconv.Atoi(string(pLength))
if err != nil {
if string(data[0:1]) == "<" {
// Assume this frame uses non-transparent-framing
return len(data), data, nil
}
return 0, nil, err
}
end := length + i + 1
if len(data) >= end {
// Return the frame with the length removed
return end, data[i+1 : end], nil
}
}
// Request more data
return 0, nil, nil
}
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