Function

GLib-2.0 ▶ GLib ▶ log_writer_standard_streams`Since 2.50`

log_writer_standard_streams(
    log_level: LogLevelFlags,
    fields: LogField[],
    user_data?: any,
): LogWriterOutput
Format a structured log message and print it to either stdout or stderr, depending on its log level.

GLib.LogLevelFlags.LEVEL_INFO and GLib.LogLevelFlags.LEVEL_DEBUG messages are sent to stdout, or to stderr if requested by GLib.log_writer_default_set_use_stderr; all other log levels are sent to stderr. Only fields which are understood by this function are included in the formatted string which is printed.

If the output stream supports ANSI color escape sequences, they will be used in the output.

A trailing new-line character is added to the log message when it is printed.

This is suitable for use as a GLib.LogWriterFunc.
Parameters
- log_level: LogLevelFlags
  log level, either from GLib.LogLevelFlags, or a user-defined level
- fields: LogField[]
  key–value pairs of structured data forming the log message
- Optionaluser_data: any
  user data passed to GLib.log_set_writer_func
Returns LogWriterOutput
GLib.LogWriterOutput.HANDLED on success, GLib.LogWriterOutput.UNHANDLED otherwise

Since
2.50
- Defined in glib-2.0/glib-2.0.d.ts:9050