Class: Logger::ColorFormatter

Inherits:
Formatter
  • Object
show all
Defined in:
lib/innate/log/color_formatter.rb

Overview

Extended Formatter that supports ANSI colors.

The basic mapping of ANSI colors is as follows:

| reset | bold | dark | underline | blink | negative

MOD | 0 | 1 | 2 | 4 | 5 | 7

| black | red | green | yellow | blue | magenta | cyan | white

FG | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 BG | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47

The output is done by: “e[#mod;#fg;#bgm#stringe[0m” The suffix is to reset the terminal to the original state again.

Constant Summary collapse

LEVEL_COLOR = 
{
  'DEBUG'   => "\e[0;34;40m%s\e[0m", # blue on black
  'INFO'    => "\e[0;37;40m%s\e[0m", # white on black
  'WARN'    => "\e[0;33;40m%s\e[0m", # yellow on black
  'ERROR'   => "\e[0;31;40m%s\e[0m", # red on black
  'FATAL'   => "\e[0;35;40m%s\e[0m", # red on black
  'UNKNOWN' => "\e[0;32;40m%s\e[0m", # green on black
}
FORMAT_TIME = 
"%Y-%m-%d %H:%M:%S"
FORMAT_LINE = 
"%s [%s $%d] %5s | %s: %s\n"

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.color?(logdev) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/innate/log/color_formatter.rb', line 45

def self.color?(logdev)
  logdev.respond_to?(:tty?) and logdev.tty?
end

Instance Method Details

#call(severity, time, program, message) ⇒ Object 



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# File 'lib/innate/log/color_formatter.rb', line 28

def call(severity, time, program, message)
  hint = severity[0,1]
  time = format_time(time)
  pid = $$
  string = colorize(msg2str(message), severity)

  FORMAT_LINE % [hint, time, pid, severity, program, string]
end

#colorize(string, severity) ⇒ Object 



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# File 'lib/innate/log/color_formatter.rb', line 41

def colorize(string, severity)
  LEVEL_COLOR[severity] % string
end

#format_time(time) ⇒ Object 



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# File 'lib/innate/log/color_formatter.rb', line 37

def format_time(time)
  time.strftime(FORMAT_TIME)
end