package output import ( "bytes" "context" "fmt" "io" "os" "strings" "gitoa.ru/go-4devs/console/output/label" "gitoa.ru/go-4devs/console/output/verbosity" ) const newline = "\n" func Stderr() Output { return New(os.Stderr, FormatString) } func Stdout() Output { return New(os.Stdout, FormatString) } func Buffer(buf *bytes.Buffer) Output { return New(buf, FormatString) } func FormatString(_ verbosity.Verbosity, msg string, kv ...label.KeyValue) string { if len(kv) > 0 { nline := "" if msg[len(msg)-1:] == newline { nline = newline } return "msg=\"" + strings.TrimSpace(msg) + "\", " + label.KeyValues(kv).String() + nline } return msg } func New(w io.Writer, format func(verb verbosity.Verbosity, msg string, kv ...label.KeyValue) string) Output { return func(ctx context.Context, verb verbosity.Verbosity, msg string, kv ...label.KeyValue) (int, error) { return fmt.Fprint(w, format(verb, msg, kv...)) } }