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Contents
class Logger
# 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};#{bg}m#{string}\e[0m"
# The suffix is to reset the terminal to the original state again.
class ColorFormatter < Formatter
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"
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
def format_time(time)
time.strftime(FORMAT_TIME)
end
def colorize(string, severity)
LEVEL_COLOR[severity] % string
end
def self.color?(logdev)
logdev.respond_to?(:tty?) and logdev.tty?
end
end
end
Version data entries
21 entries across 21 versions & 3 rubygems