Class: TxtFileHandler

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

Overview

Lil lib used to read txt files

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(fileadr, relative = true) ⇒ TxtFileHandler

Returns a new instance of TxtFileHandler.



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

def initialize(fileadr, relative = true)
  if relative
    @path = File.join(Rails.root, fileadr)
  else
    @path = fileadr
  end

end

Class Method Details

.exist?(fileadr, relative = true) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/txt_file_handler.rb', line 68

def self.exist?(fileadr, relative = true)
  if relative
    path = File.join(Rails.root, fileadr)
  else
    path = fileadr
  end
  FileTest.exist?(path)
end

Instance Method Details

#clear! ⇒ Object 



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# File 'lib/txt_file_handler.rb', line 77

def clear!
  close
  return unless wopen
  @file << ""
  close
end

#file ⇒ Object 



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# File 'lib/txt_file_handler.rb', line 64

def file
  @file
end

#line(nr) ⇒ Object 



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# File 'lib/txt_file_handler.rb', line 12

def line(nr)
  return unless ropen
  line = nil
  i = 0
  @file.each_line{ |s|      
    if i == nr
      line = s
      close
      break
    end
    i+=1
  }
  return line
end

#line_nr ⇒ Object 



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# File 'lib/txt_file_handler.rb', line 27

def line_nr
  return unless ropen
  i = 0
  @file.each_line{ |s|
    i+=1
  }
  close
  i
end

#lines(start, finish) ⇒ Object 



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# File 'lib/txt_file_handler.rb', line 37

def lines(start, finish)
  return unless ropen
  lines = []
  
  if start > finish
    temp = start
    start = finish
    finish = temp
    invert = true
  end
  
  i = 0
  j = 0
  @file.each_line{ |s|
    if (i >= start && i <= finish)
      lines[j] = s.gsub("", "Ruby")
      j+=1
    end
    i+=1
  }
  if invert
    lines = lines.reverse
  end
  close
  lines
end