Add bin and edit workflow

bin/gems/webrick-1.9.1/lib/webrick/log.rb

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+# frozen_string_literal: true
+#--
+# 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
+
+  ##
+  # A generic logging class
+
+  class BasicLog
+
+    # Fatal log level which indicates a server crash
+
+    FATAL = 1
+
+    # Error log level which indicates a recoverable error
+
+    ERROR = 2
+
+    # Warning log level which indicates a possible problem
+
+    WARN  = 3
+
+    # Information log level which indicates possibly useful information
+
+    INFO  = 4
+
+    # Debugging error level for messages used in server development or
+    # debugging
+
+    DEBUG = 5
+
+    # log-level, messages above this level will be logged
+    attr_accessor :level
+
+    ##
+    # Initializes a new logger for +log_file+ that outputs messages at +level+
+    # or higher.  +log_file+ can be a filename, an IO-like object that
+    # responds to #<< or nil which outputs to $stderr.
+    #
+    # If no level is given INFO is chosen by default
+
+    def initialize(log_file=nil, level=nil)
+      @level = level || INFO
+      case log_file
+      when String
+        @log = File.open(log_file, "a+")
+        @log.sync = true
+        @opened = true
+      when NilClass
+        @log = $stderr
+      else
+        @log = log_file  # requires "<<". (see BasicLog#log)
+      end
+    end
+
+    ##
+    # Closes the logger (also closes the log device associated to the logger)
+    def close
+      @log.close if @opened
+      @log = nil
+    end
+
+    ##
+    # Logs +data+ at +level+ if the given level is above the current log
+    # level.
+
+    def log(level, data)
+      if @log && level <= @level
+        data += "\n" if /\n\Z/ !~ data
+        @log << data
+      end
+    end
+
+    ##
+    # Synonym for log(INFO, obj.to_s)
+    def <<(obj)
+      log(INFO, obj.to_s)
+    end
+
+    # Shortcut for logging a FATAL message
+    def fatal(msg) log(FATAL, "FATAL " + format(msg)); end
+    # Shortcut for logging an ERROR message
+    def error(msg) log(ERROR, "ERROR " + format(msg)); end
+    # Shortcut for logging a WARN message
+    def warn(msg)  log(WARN,  "WARN  " + format(msg)); end
+    # Shortcut for logging an INFO message
+    def info(msg)  log(INFO,  "INFO  " + format(msg)); end
+    # Shortcut for logging a DEBUG message
+    def debug(msg) log(DEBUG, "DEBUG " + format(msg)); end
+
+    # Will the logger output FATAL messages?
+    def fatal?; @level >= FATAL; end
+    # Will the logger output ERROR messages?
+    def error?; @level >= ERROR; end
+    # Will the logger output WARN messages?
+    def warn?;  @level >= WARN; end
+    # Will the logger output INFO messages?
+    def info?;  @level >= INFO; end
+    # Will the logger output DEBUG messages?
+    def debug?; @level >= DEBUG; end
+
+    private
+
+    ##
+    # Formats +arg+ for the logger
+    #
+    # * If +arg+ is an Exception, it will format the error message and
+    #   the back trace.
+    # * If +arg+ responds to #to_str, it will return it.
+    # * Otherwise it will return +arg+.inspect.
+    def format(arg)
+      if arg.is_a?(Exception)
+        +"#{arg.class}: #{AccessLog.escape(arg.message)}\n\t" <<
+        arg.backtrace.join("\n\t") << "\n"
+      elsif arg.respond_to?(:to_str)
+        AccessLog.escape(arg.to_str)
+      else
+        arg.inspect
+      end
+    end
+  end
+
+  ##
+  # A logging class that prepends a timestamp to each message.
+
+  class Log < BasicLog
+    # Format of the timestamp which is applied to each logged line.  The
+    # default is <tt>"[%Y-%m-%d %H:%M:%S]"</tt>
+    attr_accessor :time_format
+
+    ##
+    # Same as BasicLog#initialize
+    #
+    # You can set the timestamp format through #time_format
+    def initialize(log_file=nil, level=nil)
+      super(log_file, level)
+      @time_format = "[%Y-%m-%d %H:%M:%S]"
+    end
+
+    ##
+    # Same as BasicLog#log
+    def log(level, data)
+      tmp = Time.now.strftime(@time_format)
+      tmp << " " << data
+      super(level, tmp)
+    end
+  end
+end