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package keyvalue
import (
"fmt"
"github.com/felix/logger"
"io"
"strings"
)
// Writer implementation
type Writer struct{}
// New creates a new writer
func New() *Writer {
return &Writer{}
}
// Write implements the logger.MessageWriter interface
func (kv Writer) Write(w io.Writer, m logger.Message) {
prefix := fmt.Sprintf("%s [%-5s]", m.Time, strings.ToUpper(m.Level.String()))
io.WriteString(w, prefix)
if m.Name != "" {
io.WriteString(w, " ")
io.WriteString(w, m.Name)
io.WriteString(w, ":")
}
for i := 0; i < len(m.Fields); i = i + 2 {
io.WriteString(w, " ")
io.WriteString(w, maybeQuote(logger.ToString(m.Fields[i])))
io.WriteString(w, "=")
s := logger.ToString(m.Fields[i+1])
io.WriteString(w, maybeQuote(s))
}
}
func maybeQuote(s string) string {
if strings.ContainsAny(s, " \t\n\r") {
return fmt.Sprintf("%q", s)
}
return s
}
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