Class: YouPlot::Command::Parser

Inherits:
Object
  • Object
show all
Defined in:
lib/youplot/command/parser.rb

Defined Under Namespace

Classes: Error

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Parser

Returns a new instance of Parser.



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# File 'lib/youplot/command/parser.rb', line 15

def initialize
  @command = nil

  @options = Options.new(
    delimiter: "\t",
    transpose: false,
    headers: nil,
    pass: false,
    output: $stderr,
    fmt: 'xyy',
    encoding: nil,
    color_names: false,
    debug: false
  )

  @params = PlotParams.new
end

Instance Attribute Details

#command ⇒ Object (readonly)

Returns the value of attribute command.



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# File 'lib/youplot/command/parser.rb', line 12

def command
  @command
end

#main_parser ⇒ Object (readonly)

Returns the value of attribute main_parser.



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# File 'lib/youplot/command/parser.rb', line 12

def main_parser
  @main_parser
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/youplot/command/parser.rb', line 12

def options
  @options
end

#params ⇒ Object (readonly)

Returns the value of attribute params.



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# File 'lib/youplot/command/parser.rb', line 12

def params
  @params
end

#sub_parser ⇒ Object (readonly)

Returns the value of attribute sub_parser.



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# File 'lib/youplot/command/parser.rb', line 12

def sub_parser
  @sub_parser
end

Instance Method Details

#create_default_parser ⇒ Object 



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# File 'lib/youplot/command/parser.rb', line 33

def create_default_parser
  OptionParser.new do |parser|
    parser.program_name  = 'YouPlot'
    parser.version       = YouPlot::VERSION
    parser.summary_width = 24
    parser.on_tail('') # Add a blank line at the end
    parser.separator('')
    parser.on('Common options:')
    parser.on('-O', '--pass [FILE]', 'file to output input data to [stdout]',
              'for inserting YouPlot in the middle of Unix pipes') do |v|
      options[:pass] = v || $stdout
    end
    parser.on('-o', '--output [FILE]', 'file to output plots to [stdout]',
              'If no option is specified, plot will print to stderr') do |v|
      options[:output] = v || $stdout
    end
    parser.on('-d', '--delimiter DELIM', String, 'use DELIM instead of [TAB] for field delimiter') do |v|
      options[:delimiter] = v
    end
    parser.on('-H', '--headers', TrueClass, 'specify that the input has header row') do |v|
      options[:headers] = v
    end
    parser.on('-T', '--transpose', TrueClass, 'transpose the axes of the input data') do |v|
      options[:transpose] = v
    end
    parser.on('-t', '--title STR', String, 'print string on the top of plot') do |v|
      params.title = v
    end
    parser.on('-x', '--xlabel STR', String, 'print string on the bottom of the plot') do |v|
      params.xlabel = v
    end
    parser.on('-y', '--ylabel STR', String, 'print string on the far left of the plot') do |v|
      params.ylabel = v
    end
    parser.on('-w', '--width INT', Integer, 'number of characters per row') do |v|
      params.width = v
    end
    parser.on('-h', '--height INT', Numeric, 'number of rows') do |v|
      params.height = v
    end
    parser.on('-b', '--border STR', String, 'specify the style of the bounding box') do |v|
      params.border = v.to_sym
    end
    parser.on('-m', '--margin INT', Numeric, 'number of spaces to the left of the plot') do |v|
      params.margin = v
    end
    parser.on('--padding INT', Numeric, 'space of the left and right of the plot') do |v|
      params.padding = v
    end
    parser.on('-c', '--color VAL', String, 'color of the drawing') do |v|
      params.color = v =~ /\A[0-9]+\z/ ? v.to_i : v.to_sym
    end
    parser.on('--[no-]labels', TrueClass, 'hide the labels') do |v|
      params.labels = v
    end
    parser.on('-p', '--progress', TrueClass, 'progressive mode [experimental]') do |v|
      options[:progressive] = v
    end
    parser.on('--encoding STR', String, 'Specify the input encoding') do |v|
      options[:encoding] = v
    end
    # Optparse adds the help option, but it doesn't show up in usage.
    # This is why you need the code below.
    parser.on('--help', 'print sub-command help menu') do
      puts parser.help
      exit if YouPlot.run_as_executable?
    end
    parser.on('--debug', TrueClass, 'print preprocessed data') do |v|
      options[:debug] = v
    end
    # yield opt if block_given?
  end
end

#create_main_parser ⇒ Object 



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# File 'lib/youplot/command/parser.rb', line 107

def create_main_parser
  @main_parser = create_default_parser
  main_parser.banner = \
    "\n      Program: YouPlot (Tools for plotting on the terminal)\n      Version: \#{YouPlot::VERSION} (using UnicodePlot \#{UnicodePlot::VERSION})\n      Source:  https://github.com/kojix2/youplot\n\n      Usage:   uplot <command> [options] <in.tsv>\n\n      Commands:\n          barplot    bar           draw a horizontal barplot\n          histogram  hist          draw a horizontal histogram\n          lineplot   line          draw a line chart\n          lineplots  lines         draw a line chart with multiple series\n          scatter    s             draw a scatter plot\n          density    d             draw a density plot\n          boxplot    box           draw a horizontal boxplot\n          colors     color         show the list of available colors\n\n          count      c             draw a baplot based on the number of\n                                   occurrences (slow)\n\n      General options:\n          --help                   print command specific help menu\n          --version                print the version of YouPlot\n    MSG\n\n  # Help for the main parser is simple.\n  # Simply show the banner above.\n  main_parser.on('--help', 'print sub-command help menu') do\n    puts main_parser.banner\n    puts\n    exit if YouPlot.run_as_executable?\n  end\nend\n"

#create_sub_parser ⇒ Object 



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# File 'lib/youplot/command/parser.rb', line 182

def create_sub_parser
  @sub_parser = create_default_parser
  sub_parser.banner = \
    "\n      Usage: YouPlot \#{command} [options] <in.tsv>\n\n      Options for \#{command}:\n    MSG\n\n  case command\n\n  # If you type only `uplot` in the terminal.\n  when nil\n    warn main_parser.banner\n    warn \"\\n\"\n    exit 1 if YouPlot.run_as_executable?\n\n  when :barplot, :bar\n    sub_parser_add_symbol\n    sub_parser.on_head('--fmt STR', String, 'xy : header is like x, y...', 'yx : header is like y, x...') do |v|\n      options[:fmt] = v\n    end\n    sub_parser_add_xscale\n\n  when :count, :c\n    sub_parser_add_symbol\n    sub_parser_add_xscale\n\n  when :histogram, :hist\n    sub_parser_add_symbol\n    sub_parser.on_head('--closed STR', String, 'side of the intervals to be closed [left]') do |v|\n      params.closed = v\n    end\n    sub_parser.on_head('-n', '--nbins INT', Numeric, 'approximate number of bins') do |v|\n      params.nbins = v\n    end\n\n  when :lineplot, :line\n    sub_parser_add_canvas\n    sub_parser_add_grid\n    sub_parser.on_head('--fmt STR', String, 'xy : header is like x, y...', 'yx : header is like y, x...') do |v|\n      options[:fmt] = v\n    end\n    sub_parser_add_ylim\n    sub_parser_add_xlim\n\n  when :lineplots, :lines\n    sub_parser_add_canvas\n    sub_parser_add_grid\n    sub_parser.on_head('--fmt STR', String, 'xyxy : header is like x1, y1, x2, y2, x3, y3...',\n                       'xyy  : header is like x, y1, y2, y2, y3...') do |v|\n      options[:fmt] = v\n    end\n    sub_parser_add_ylim\n    sub_parser_add_xlim\n\n  when :scatter, :s\n    sub_parser_add_canvas\n    sub_parser_add_grid\n    sub_parser.on_head('--fmt STR', String, 'xyxy : header is like x1, y1, x2, y2, x3, y3...',\n                       'xyy  : header is like x, y1, y2, y2, y3...') do |v|\n      options[:fmt] = v\n    end\n    sub_parser_add_ylim\n    sub_parser_add_xlim\n\n  when :density, :d\n    sub_parser_add_canvas\n    sub_parser_add_grid\n    sub_parser.on('--fmt STR', String, 'xyxy : header is like x1, y1, x2, y2, x3, y3...',\n                  'xyy  : header is like x, y1, y2, y2, y3...') do |v|\n      options[:fmt] = v\n    end\n    sub_parser_add_ylim\n    sub_parser_add_xlim\n\n  when :boxplot, :box\n    sub_parser_add_xlim\n\n  when :colors, :color, :colours, :colour\n    sub_parser.on_head('-n', '--names', 'show color names only', TrueClass) do |v|\n      options[:color_names] = v\n    end\n\n  else\n    error_message = \"uplot: unrecognized command '\#{command}'\"\n    if YouPlot.run_as_executable?\n      warn error_message\n      exit 1\n    else\n      raise Error, error_message\n    end\n  end\nend\n"

#parse_options(argv = ARGV) ⇒ Object 



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# File 'lib/youplot/command/parser.rb', line 278

def parse_options(argv = ARGV)
  begin
    create_main_parser.order!(argv)
  rescue OptionParser::ParseError => e
    warn "uplot: #{e.message}"
    exit 1 if YouPlot.run_as_executable?
  end

  @command = argv.shift&.to_sym

  begin
    create_sub_parser&.parse!(argv)
  rescue OptionParser::ParseError => e
    warn "uplot: #{e.message}"
    exit 1 if YouPlot.run_as_executable?
  end
end

#sub_parser_add_canvas ⇒ Object 



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# File 'lib/youplot/command/parser.rb', line 158

def sub_parser_add_canvas
  sub_parser.on_head('--canvas STR', String, 'type of canvas') do |v|
    params.canvas = v.to_sym
  end
end

#sub_parser_add_grid ⇒ Object 



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# File 'lib/youplot/command/parser.rb', line 176

def sub_parser_add_grid
  sub_parser.on_head('--[no-]grid', TrueClass, 'draws grid-lines at the origin') do |v|
    params.grid = v
  end
end

#sub_parser_add_symbol ⇒ Object 



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# File 'lib/youplot/command/parser.rb', line 145

def sub_parser_add_symbol
  sub_parser.on_head('--symbol STR', String, 'character to be used to plot the bars') do |v|
    params.symbol = v
  end
end

#sub_parser_add_xlim ⇒ Object 



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# File 'lib/youplot/command/parser.rb', line 164

def sub_parser_add_xlim
  sub_parser.on_head('--xlim FLOAT,FLOAT', Array, 'plotting range for the x coordinate') do |v|
    params.xlim = v.take(2)
  end
end

#sub_parser_add_xscale ⇒ Object 



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# File 'lib/youplot/command/parser.rb', line 151

def sub_parser_add_xscale
  xscale_options = UnicodePlot::ValueTransformer::PREDEFINED_TRANSFORM_FUNCTIONS.keys.join(', ')
  sub_parser.on_head('--xscale STR', String, "axis scaling (#{xscale_options})") do |v|
    params.xscale = v
  end
end

#sub_parser_add_ylim ⇒ Object 



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# File 'lib/youplot/command/parser.rb', line 170

def sub_parser_add_ylim
  sub_parser.on_head('--ylim FLOAT,FLOAT', Array, 'plotting range for the y coordinate') do |v|
    params.ylim = v.take(2)
  end
end