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#
# log.rb -- Log Class
#
# Author: IPR -- Internet Programming with Ruby -- writers
# Copyright (c) 2000, 2001 TAKAHASHI Masayoshi, GOTOU Yuuzou
# Copyright (c) 2002 Internet Programming with Ruby writers. All rights
# reserved.
#
# $IPR: log.rb,v 1.26 2002/10/06 17:06:10 gotoyuzo Exp $
module WEBrick
class BasicLog
# log-level constant
FATAL, ERROR, WARN, INFO, DEBUG = 1, 2, 3, 4, 5
attr_accessor :level
def initialize(log_file=nil, level=nil)
@level = level || INFO
case log_file
when String
@log = open(log_file, "a+")
@log.sync = true
@opened = true
when NilClass
@log = $stderr
else
@log = log_file # requires "<<". (see BasicLog#log)
end
end
def close
@log.close if @opened
@log = nil
end
def log(level, data)
if @log && level <= @level
@log << (data + "\n")
end
end
def <<(obj)
log(INFO, obj.to_s)
end
def fatal(msg) log(FATAL, "FATAL " << format(msg)); end
def error(msg) log(ERROR, "ERROR " << format(msg)); end
def warn(msg) log(WARN, "WARN " << format(msg)); end
def info(msg) log(INFO, "INFO " << format(msg)); end
def debug(msg) log(DEBUG, "DEBUG " << format(msg)); end
def fatal?; @level >= FATAL; end
def error?; @level >= ERROR; end
def warn?; @level >= WARN; end
def info?; @level >= INFO; end
def debug?; @level >= DEBUG; end
private
def format(arg)
str = if arg.is_a?(Exception)
"#{arg.class}: #{arg.message}\n\t" <<
arg.backtrace.join("\n\t")
elsif arg.respond_to?(:to_str)
arg.to_str
else
arg.inspect
end
end
end
class Log < BasicLog
attr_accessor :time_format
def initialize(log_file=nil, level=nil)
super(log_file, level)
@time_format = "[%Y-%m-%d %H:%M:%S]"
end
def log(level, data)
tmp = Time.now.strftime(@time_format)
tmp << " " << data
super(level, tmp)
end
end
end
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