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Edit File : display_code_with_line_numbers.rb \| Size : 1.77 KB
# frozen_string_literal: true module SyntaxSuggest # Outputs code with highlighted lines # # Whatever is passed to this class will be rendered # even if it is "marked invisible" any filtering of # output should be done before calling this class. # # DisplayCodeWithLineNumbers.new( # lines: lines, # highlight_lines: [lines[2], lines[3]] # ).call # # => # 1 # 2 def cat # > 3 Dir.chdir # > 4 end # 5 end # 6 class DisplayCodeWithLineNumbers TERMINAL_HIGHLIGHT = "\e[1;3m" # Bold, italics TERMINAL_END = "\e[0m" def initialize(lines:, highlight_lines: [], terminal: false) @lines = Array(lines).sort @terminal = terminal @highlight_line_hash = Array(highlight_lines).each_with_object({}) { \|line, h\| h[line] = true } @digit_count = @lines.last&.line_number.to_s.length end def call @lines.map do \|line\| format_line(line) end.join end private def format_line(code_line) # Handle trailing slash lines code_line.original.lines.map.with_index do \|contents, i\| format( empty: code_line.empty?, number: (code_line.number + i).to_s, contents: contents, highlight: @highlight_line_hash[code_line] ) end.join end private def format(contents:, number:, empty:, highlight: false) string = +"" string << if highlight "> " else " " end string << number.rjust(@digit_count).to_s if empty string << contents else string << " " string << TERMINAL_HIGHLIGHT if @terminal && highlight string << contents string << TERMINAL_END if @terminal end string end end end Back

Edit File : display_code_with_line_numbers.rb | Size : 1.77 KB

# frozen_string_literal: true

module SyntaxSuggest
  # Outputs code with highlighted lines
  #
  # Whatever is passed to this class will be rendered
  # even if it is "marked invisible" any filtering of
  # output should be done before calling this class.
  #
  #   DisplayCodeWithLineNumbers.new(
  #     lines: lines,
  #     highlight_lines: [lines[2], lines[3]]
  #   ).call
  #   # =>
  #       1
  #       2  def cat
  #     > 3    Dir.chdir
  #     > 4    end
  #       5  end
  #       6
  class DisplayCodeWithLineNumbers
    TERMINAL_HIGHLIGHT = "\e[1;3m" # Bold, italics
    TERMINAL_END = "\e[0m"

def initialize(lines:, highlight_lines: [], terminal: false)
      @lines = Array(lines).sort
      @terminal = terminal
      @highlight_line_hash = Array(highlight_lines).each_with_object({}) { |line, h| h[line] = true }
      @digit_count = @lines.last&.line_number.to_s.length
    end

def call
      @lines.map do |line|
        format_line(line)
      end.join
    end

private def format_line(code_line)
      # Handle trailing slash lines
      code_line.original.lines.map.with_index do |contents, i|
        format(
          empty: code_line.empty?,
          number: (code_line.number + i).to_s,
          contents: contents,
          highlight: @highlight_line_hash[code_line]
        )
      end.join
    end

private def format(contents:, number:, empty:, highlight: false)
      string = +""
      string << if highlight
        "> "
      else
        "  "
      end

string << number.rjust(@digit_count).to_s
      if empty
        string << contents
      else
        string << "  "
        string << TERMINAL_HIGHLIGHT if @terminal && highlight
        string << contents
        string << TERMINAL_END if @terminal
      end
      string
    end
  end
end

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