Class: FileFilter

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

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(dir_pattern, size_threshold: 1000, cust_judge: nil, process_block: nil) ⇒ FileFilter

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

def initialize(dir_pattern, size_threshold: 1000,
               cust_judge: nil, process_block: nil)
  @dir_pattern = dir_pattern
  @size_threshold = size_threshold
  @cust_judge = cust_judge ? cust_judge : method(:default_judge)
  @total = 0
  @process_block = process_block
end

Class Method Details

.check(dir_pattern, size_threshold: 1000, cust_judge: nil) ⇒ Object 



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# File 'lib/file_filter.rb', line 45

def self.check(dir_pattern, size_threshold: 1000, cust_judge: nil)
  FileFilter.new(
    dir_pattern,
    size_threshold: size_threshold,
    cust_judge: cust_judge,
    process_block:
    proc do |f|
      puts "filterd file: #{f}"
    end
  ).start
end

.check_save_result(dir_pattern, save_file_name: 'filtered_file.txt', size_threshold: 1000, cust_judge: nil) ⇒ Object 



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# File 'lib/file_filter.rb', line 57

def self.check_save_result(dir_pattern, save_file_name: 'filtered_file.txt',
                           size_threshold: 1000, cust_judge: nil)
  result_file = File.open(save_file_name, 'wt')
  FileFilter.new(
    dir_pattern,
    size_threshold: size_threshold,
    cust_judge: cust_judge,
    process_block:
    proc do |f|
      puts "filterd file: #{f}"
      result_file << f << "\n"
    end
  ).start
  result_file.close
end

.delete(dir_pattern, size_threshold: 1000, cust_judge: nil) ⇒ Object 



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# File 'lib/file_filter.rb', line 32

def self.delete(dir_pattern, size_threshold: 1000, cust_judge: nil)
  FileFilter.new(
    dir_pattern,
    size_threshold: size_threshold,
    cust_judge: cust_judge,
    process_block:
    proc do |f|
      puts "deleted file: #{f}"
      File.delete(f)
    end
  ).start
end

Instance Method Details

#default_judge(f) ⇒ Object 



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

def default_judge(f)
  File.size(f) <= @size_threshold
end

#filter_file(f) ⇒ Object 



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# File 'lib/file_filter.rb', line 18

def filter_file(f)
  if @cust_judge.call(f)
    @total += 1
    @process_block.call(f)
  end
end

#start ⇒ Object 



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# File 'lib/file_filter.rb', line 25

def start
  Dir.glob(@dir_pattern) do |f|
    filter_file(f)
  end
  puts "total:#{@total}"
end