Class: CovLoupe::TableFormatter

Inherits:
Object
  • Object
show all
Defined in:
lib/cov_loupe/formatters/table_formatter.rb

Overview

General-purpose table formatter with Unicode box-drawing or ASCII characters.

Used by CLI subcommands (summary, raw, uncovered, detailed) to format per-file data as aligned tables. Column widths are computed from content. Supports horizontal alignment per column (left, right, center).

Class Method Summary collapse

Class Method Details

.format(headers:, rows:, alignments: nil, output_chars: :default) ⇒ String

Format data as a table with box-drawing or ASCII characters.

Parameters:

  • headers (Array<String>) —

    Column headers

  • rows (Array<Array>) —

    Data rows (each row is an array of cell values)

  • alignments (Array<Symbol>) (defaults to: nil) —

    Column alignments (:left, :right, :center)

  • output_chars (Symbol) (defaults to: :default) —

    Output character mode (:default, :fancy, or :ascii)

Returns:

  • (String) —

    Formatted table



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# File 'lib/cov_loupe/formatters/table_formatter.rb', line 18

def self.format(headers:, rows:, alignments: nil, output_chars: :default)
  return 'No data to display' if rows.empty?

  # Resolve mode and get appropriate charset
  resolved_mode = OutputChars.resolve_mode(output_chars)
  charset = OutputChars.charset_for(resolved_mode)

  # Convert cell contents to ASCII if needed
  convert = ->(text) { OutputChars.convert(text.to_s, resolved_mode) }

  alignments ||= [:left] * headers.size
  converted_headers = headers.map(&convert)
  converted_rows = rows.map { |row| row.map(&convert) }
  all_rows = [converted_headers] + converted_rows

  # Calculate column widths
  widths = headers.size.times.map do |col|
    all_rows.map { |row| row[col].to_s.length }.max
  end

  lines = []
  lines << border_line(widths, charset[:top_left], charset[:top_tee], charset[:top_right], charset)
  lines << data_row(converted_headers, widths, alignments, charset)
  lines << border_line(widths, charset[:left_tee], charset[:cross], charset[:right_tee], charset)
  converted_rows.each { |row| lines << data_row(row, widths, alignments, charset) }
  lines << border_line(widths, charset[:bottom_left], charset[:bottom_tee], charset[:bottom_right],
    charset)

  lines.join("\n")
end

.format_vertical(data, output_chars: :default) ⇒ String

Format a single key-value table (vertical layout)

Parameters:

  • data (Hash) —

    Key-value pairs

  • output_chars (Symbol) (defaults to: :default) —

    Output character mode (:default, :fancy, or :ascii)

Returns:

  • (String) —

    Formatted table



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# File 'lib/cov_loupe/formatters/table_formatter.rb', line 53

def self.format_vertical(data, output_chars: :default)
  rows = data.map { |k, v| [k.to_s, v.to_s] }
  format(headers: %w[Key Value], rows: rows, alignments: %i[left left], output_chars: output_chars)
end