Method Format

text_formatter.go:133–230

Format renders a single log entry

(entry *Entry)

// Format renders a single log entry
func (f *TextFormatter) Format(entry *Entry) ([]byte, error) {
	data := make(Fields)
	for k, v := range entry.Data {
		data[k] = v
	}
	prefixFieldClashes(data, f.FieldMap, entry.HasCaller())
	keys := make([]string, 0, len(data))
	for k := range data {
		keys = append(keys, k)
	}

	var funcVal, fileVal string

	fixedKeys := make([]string, 0, 4+len(data))
	if !f.DisableTimestamp {
		fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyTime))
	}
	fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyLevel))
	if entry.Message != "" {
		fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyMsg))
	}
	if entry.err != "" {
		fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyLogrusError))
	}
	if entry.HasCaller() {
		if f.CallerPrettyfier != nil {
			funcVal, fileVal = f.CallerPrettyfier(entry.Caller)
		} else {
			funcVal = entry.Caller.Function
			fileVal = fmt.Sprintf("%s:%d", entry.Caller.File, entry.Caller.Line)
		}

		if funcVal != "" {
			fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyFunc))
		}
		if fileVal != "" {
			fixedKeys = append(fixedKeys, f.FieldMap.resolve(FieldKeyFile))
		}
	}

	if !f.DisableSorting {
		if f.SortingFunc == nil {
			sort.Strings(keys)
			fixedKeys = append(fixedKeys, keys...)
		} else {
			if !f.isColored() {
				fixedKeys = append(fixedKeys, keys...)
				f.SortingFunc(fixedKeys)
			} else {
				f.SortingFunc(keys)
			}
		}
	} else {
		fixedKeys = append(fixedKeys, keys...)
	}

	var b *bytes.Buffer
	if entry.Buffer != nil {