Class: RGrep

Inherits:
Object
  • Object
show all
Defined in:
lib/rgrep.rb

Overview

RGrep class

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(regexp, *uris) ⇒ RGrep

Returns a new instance of RGrep.



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# File 'lib/rgrep.rb', line 7

def initialize regexp, *uris
  filenames = uris.select {|uri| File.file? uri}
  @result = filenames.map do |filename|
    rgrep_with regexp, filename
  end.inject([]) {|ret,val| ret += val}
end

Class Method Details

.cli(*argv) ⇒ Object 



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# File 'lib/rgrep.rb', line 3

def self.cli *argv
  puts new(*argv).to_s
end

Instance Method Details

#rgrep_with(regexp, filename) ⇒ Object 



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# File 'lib/rgrep.rb', line 14

def rgrep_with regexp, filename
  result = []
  File.readlines(filename).each_with_index do |contents,index|
    result.push [filename, index, contents] if contents =~ Regexp.new(regexp)
  end
  return result
end

#to_s ⇒ Object 



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# File 'lib/rgrep.rb', line 22

def to_s
  @result.map do |filename,index,contents|
    "#{filename}:#{index}:#{contents}".chomp
  end.join("\n")
end