Class: LogFinder

Inherits:
Object
  • Object
show all
Defined in:
lib/log_finder.rb,
lib/log_finder/version.rb

Constant Summary collapse

VERSION = 
"0.1.0"

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(filename, read_length, number_of_lines) ⇒ LogFinder

Returns a new instance of LogFinder.



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# File 'lib/log_finder.rb', line 5

def initialize( filename , read_length , number_of_lines )
  raise unless filename.instance_of?( ::String )
  raise unless read_length.integer?
  @filename = filename
  @read_length = read_length
  @number_of_lines = number_of_lines
  @search_by = nil

  set_array
end

Class Method Details

.search_by(regexp, filename, read_length: 256 * 1024, number_of_lines: nil) ⇒ Object 



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# File 'lib/log_finder.rb', line 40

def self.search_by(
  regexp ,
  filename ,
  read_length: 256 * 1024 ,
  number_of_lines: nil
)
  self.new( filename , read_length , number_of_lines ).search_by( regexp )
end

Instance Method Details

#search_by(regexp) ⇒ Object 



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# File 'lib/log_finder.rb', line 16

def search_by( regexp )
  raise unless regexp.instance_of?( ::String ) or regexp.instance_of?( ::Regexp )
  @search_by = regexp
  n = row_number
  unless n.nil?
    from_n = Math.max( 0 , n - 10 )
    to_n = Math.min( n + 100 , @ary.length )
    unless from_n == n
      puts @ary[ from_n..( n - 1 ) ]
      puts ""
    end
    puts @ary[n]
    unless to_n == n
      puts ""
      puts @ary[ ( n + 1 )..to_n ]
    end
    puts ""
    puts "=" * 64
    puts "displayed from \##{ from_n } to \##{ to_n }"
  else
    puts "No row matched with #{ @search_by.inspect }"
  end
end