Module: Zlog::Layouts::SimpleCore

Included in:
Simple, SimpleNamed
Defined in:
lib/zlog/simple_layouts.rb

Constant Summary collapse

LOGLEVEL2NAME =

standard order: [“DEBUG”, “INFO”, “WARN”, “ERROR”, “FATAL”]

[:debug, :info, :warning, :ok, :section, :error, :fatal]
STDOUT_PATTERN_NOCOLORS = 
{
  :debug    => ".. %s",
  :info     => "-- %s",
  :warning  => "ww %s",
  :ok       => "++ %s",
  :section  => "\n== %s",
  :error    => "ee %s",
  :fatal    => "ff %s",
  :name     => "%s: "
}
STDOUT_PATTERN_8COLORS = 
{
  :debug   => "\033[37m.. %s\033[0m",
  :info    => "\033[0m-- %s\033[0m",
  :warning => "\033[1;33mww %s\033[0m",
  :ok      => "\033[1;32m++ %s\033[0m",
  :section => "\n\033[1;34m== %s\033[0m",
  :error   => "\033[1;31mee %s\033[0m",
  :fatal   => "\033[1;41mff\033[0m\033[1;31 %s\033[0m",
  :name    => "\033[37m%s: "
}
STDOUT_PATTERN_256COLORS = 
{
  :debug   => "\033[38;5;246m.. %s\033[0m",
  :info    => "\033[38;5;255m-- %s\033[0m",
  :warning => "\033[38;5;226mww %s\033[0m",
  :ok      => "\033[38;5;46m++ %s\033[0m",
  :section => "\n\033[38;5;33m== %s\033[0m",
  :error   => "\033[38;5;196mee %s\033[0m",
  :fatal   => "\033[48;5;196mff\033[0m\033[38;5;196m %s\033[0m",
  :name    => "\033[38;5;246m%s: "
}

Instance Method Summary collapse

Instance Method Details

#format_simple(event, print_name = false, pallette = STDOUT_PATTERN_256COLORS) ⇒ Object 



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# File 'lib/zlog/simple_layouts.rb', line 3

def format_simple event, print_name = false, pallette = STDOUT_PATTERN_256COLORS
  # Logging::LogEvent logger="zlog", level=2, data="warn me", time=2013-09-29 23:36:12 +0200, file="", line="", method=""
  level = LOGLEVEL2NAME[event.level]
  pattern = pallette[level]
  # get the core message
  mkmsg = lambda{ |data|
      obj = format_obj(data)
      if print_name
        (pallette[:name] % event.logger) + ( pattern % obj ) 
      else 
        pattern % obj 
      end
    }
  # handle continuous logging lines
  if (event.data.start_with? "\r")
    # this is a continuous message
    # there are 2 cases which need to be covered:
    # A: the last line was a regular log line,
    #    the cursor caret is at position 0
    # B: the last line was a continuous log line,
    #    the cursor caret is at the end of the last message
    # For case B we want to go back to the beginning of the line (via "\r")
    # then insert the message and the amount of white space needed to
    # overwrite any visible characters from the last message
    msg = mkmsg.(event.data[1..-1])
    # determine the length of the last message
    len = (@has_last_line_newline == false) ? @last.length : 0
    # calculate the amount of white spaces we need to overwrite
    # remnants of the last log message
    rem_len = len - msg.length
    rem_len = 0 if rem_len < 0
    # create the resulting string
    ret = "\r" + msg + (' '*rem_len)
    # make sure to update state parameters
    @last = msg
    @has_last_line_newline = false
    # return the result
    ret
  else
    # format the object
    msg = mkmsg.(event.data)
    # check if we need to add a newline at the start of the line
    # this only happens when the last message was a continuous message
    # and thus didn't set a \n at the end
    sl =
      if (@has_last_line_newline == false)
        @has_last_line_newline = true
        "\n"
      else "" end
    # return the resulting pattern
    sl + msg + "\n"
  end
end