Module: Readlines::Delete

Included in:
ReadDuc
Defined in:
lib/readlines/readlines/delete.rb

Instance Method Summary collapse

Instance Method Details

#delete_csv_columns_now(column_indices) ⇒ Object

Delete specific columns from a CSV file

Raises:

  • (Readlines::NotFoundError) 


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# File 'lib/readlines/readlines/delete.rb', line 53

def delete_csv_columns_now(column_indices)
  raise Readlines::NotFoundError, "File not found: #{@file_path}" unless ::File.exist?(@file_path)

  content = ::File.readlines(@file_path)
  updated_content = content.map do |line|
    values = line.chomp.split(',')
    column_indices.sort.reverse.each { |index| values.delete_at(index) }
    values.join(',')
  end.join("\n")
  ::File.write(@file_path, updated_content)
  updated_content
end

#delete_duplicate_lines_now ⇒ Object

Delete duplicate lines from the file

Raises:

  • (Readlines::NotFoundError) 


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# File 'lib/readlines/readlines/delete.rb', line 43

def delete_duplicate_lines_now
  raise Readlines::NotFoundError, "File not found: #{@file_path}" unless ::File.exist?(@file_path)

  content = ::File.readlines(@file_path)
  unique_content = content.uniq.join
  ::File.write(@file_path, unique_content)
  unique_content
end

#delete_empty_lines_now ⇒ Object

Raises:

  • (Readlines::NotFoundError) 


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# File 'lib/readlines/readlines/delete.rb', line 8

def delete_empty_lines_now
  raise Readlines::NotFoundError, "File not found: #{@file_path}" unless ::File.exist?(@file_path)
  content = ::File.read(@file_path)
  updated_content = content.lines.reject { |line| line.strip.empty? }.join
  ::File.write(@file_path, updated_content)
  updated_content
end

#delete_lines_now(line_numbers, delete_space: false) ⇒ Object

Delete specific lines from the file and optionally remove empty lines

Raises:

  • (Readlines::NotFoundError) 


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# File 'lib/readlines/readlines/delete.rb', line 27

def delete_lines_now(line_numbers, delete_space: false)
  raise Readlines::NotFoundError, "File not found: #{@file_path}" unless ::File.exist?(@file_path)

  content = ::File.readlines(@file_path)
  updated_content = content.reject.with_index { |_, index| line_numbers.include?(index + 1) }.join

  ::File.write(@file_path, updated_content)

  if delete_space
    remove_empty_lines
  end

  updated_content
end

#delete_right_left_separator_now(separator, delete_right: false, delete_left: false, keep_separator: false) ⇒ Object

Raises:

  • (Readlines::NotFoundError) 


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# File 'lib/readlines/readlines/delete.rb', line 66

def delete_right_left_separator_now(separator, delete_right: false, delete_left: false, keep_separator: false)
  raise Readlines::NotFoundError, "File not found: #{@file_path}" unless ::File.exist?(@file_path)

  result = ::File.readlines(@file_path).map do |line|
    line.strip!
    next if line.empty?

    parts = line.split(separator, 2)
    separator_keep = keep_separator ? separator : ''

    if delete_right && parts.size > 1
      parts.first + separator_keep
    elsif delete_left && parts.size > 1
      separator_keep + parts.last
    else
      line
    end
  end.compact

  ::File.write(@file_path, result.join("\n"))
  result
end

#delete_unwanted_characters_now(characters) ⇒ Object

Delete unwanted characters from the file

Raises:

  • (Readlines::NotFoundError) 


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# File 'lib/readlines/readlines/delete.rb', line 17

def delete_unwanted_characters_now(characters)
  raise Readlines::NotFoundError, "File not found: #{@file_path}" unless ::File.exist?(@file_path)

  content = ::File.read(@file_path)
  updated_content = content.gsub(/[#{Regexp.escape(characters)}]/, '')
  ::File.write(@file_path, updated_content)
  updated_content
end