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package format
import (
"bytes"
"fmt"
"github.com/mattermost/logr"
)
// Plain is the simplest formatter, outputting only text with
// no colors.
type Plain struct {
// DisableTimestamp disables output of timestamp field.
DisableTimestamp bool
// DisableLevel disables output of level field.
DisableLevel bool
// DisableMsg disables output of msg field.
DisableMsg bool
// DisableContext disables output of all context fields.
DisableContext bool
// DisableStacktrace disables output of stack trace.
DisableStacktrace bool
// Delim is an optional delimiter output between each log field.
// Defaults to a single space.
Delim string
// TimestampFormat is an optional format for timestamps. If empty
// then DefTimestampFormat is used.
TimestampFormat string
}
// Format converts a log record to bytes.
func (p *Plain) Format(rec *logr.LogRec, stacktrace bool, buf *bytes.Buffer) (*bytes.Buffer, error) {
delim := p.Delim
if delim == "" {
delim = " "
}
if buf == nil {
buf = &bytes.Buffer{}
}
timestampFmt := p.TimestampFormat
if timestampFmt == "" {
timestampFmt = logr.DefTimestampFormat
}
if !p.DisableTimestamp {
var arr [128]byte
tbuf := rec.Time().AppendFormat(arr[:0], timestampFmt)
buf.Write(tbuf)
buf.WriteString(delim)
}
if !p.DisableLevel {
fmt.Fprintf(buf, "%v%s", rec.Level().Name, delim)
}
if !p.DisableMsg {
fmt.Fprint(buf, rec.Msg(), delim)
}
if !p.DisableContext {
ctx := rec.Fields()
if len(ctx) > 0 {
logr.WriteFields(buf, ctx, " ")
}
}
if stacktrace && !p.DisableStacktrace {
frames := rec.StackFrames()
if len(frames) > 0 {
buf.WriteString("\n")
logr.WriteStacktrace(buf, rec.StackFrames())
}
}
buf.WriteString("\n")
return buf, nil
}
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