Class: TestBench::Output::Writer::Buffer::Console::Geometry

Inherits:
Struct
  • Object
show all
Defined in:
lib/test_bench/output/writer/buffer/console.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#column ⇒ Object

Returns the value of attribute column

Returns:

  • (Object) —

    the current value of column



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# File 'lib/test_bench/output/writer/buffer/console.rb', line 83

def column
  @column
end

#height ⇒ Object

Returns the value of attribute height

Returns:

  • (Object) —

    the current value of height



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# File 'lib/test_bench/output/writer/buffer/console.rb', line 83

def height
  @height
end

#row ⇒ Object

Returns the value of attribute row

Returns:

  • (Object) —

    the current value of row



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# File 'lib/test_bench/output/writer/buffer/console.rb', line 83

def row
  @row
end

#width ⇒ Object

Returns the value of attribute width

Returns:

  • (Object) —

    the current value of width



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# File 'lib/test_bench/output/writer/buffer/console.rb', line 83

def width
  @width
end

Class Method Details

.get ⇒ Object 



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# File 'lib/test_bench/output/writer/buffer/console.rb', line 84

def self.get
  instance = new

  STDIN.raw do |stdin|
    instance.height, instance.width = stdin.winsize

    instance.row, instance.column = stdin.cursor
  end

  instance
end

Instance Method Details

#bottom_row? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/test_bench/output/writer/buffer/console.rb', line 96

def bottom_row?
  row + 1 == height && column == 0
end

#capacity ⇒ Object 



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# File 'lib/test_bench/output/writer/buffer/console.rb', line 120

def capacity
  capacity = 0

  rows_remaining = height - row - 1

  if rows_remaining > 0
    capacity += (rows_remaining - 1) * width

    final_row = width - column
    capacity += final_row
  end

  capacity
end

#next(text) ⇒ Object 



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# File 'lib/test_bench/output/writer/buffer/console.rb', line 100

def next(text)
  write_ahead_text = text.slice!(0, capacity)

  next!(write_ahead_text)

  write_ahead_text
end

#next!(text) ⇒ Object 



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# File 'lib/test_bench/output/writer/buffer/console.rb', line 108

def next!(text)
  escape_sequence_pattern = %r{\A\e\[[[:digit:]]+(?:;[[:digit:]]+)*[[:alpha:]]$}
  if escape_sequence_pattern.match?(text)
    return
  end

  row, column, _scroll_rows = next_position(text)

  self.row = row
  self.column = column
end

#next_position(text) ⇒ Object 



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# File 'lib/test_bench/output/writer/buffer/console.rb', line 135

def next_position(text)
  text_length = text.length

  newline = text.end_with?("\n")
  if newline
    text_length -= 1
  end

  row = self.row
  column = self.column

  text_rows, text_columns = text_length.divmod(width)

  row += text_rows

  columns_remaining = width - column
  if columns_remaining > text_columns
    column += text_columns
  else
    row += 1
    column = text_columns - columns_remaining
  end

  if newline
    reached_next_line = column == 0 && row > self.row

    newline_needed = !reached_next_line
    if newline_needed
      row += 1
      column = 0
    end
  end

  if row >= height
    row_limit = height - 1

    scroll_rows = row - row_limit
    row = row_limit
  else
    scroll_rows = 0
  end

  return row, column, scroll_rows
end