Class: ImageSite::Options

Inherits:
Object
  • Object
show all
Defined in:
lib/image_site/options.rb

Constant Summary collapse

DEFAULT_COLUMNS = 
4
DEFAULT_ROWS = 
10

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Options

Returns a new instance of Options.



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# File 'lib/image_site/options.rb', line 10

def initialize
  @title = nil
  @columns = DEFAULT_COLUMNS
  @rows = DEFAULT_ROWS
  @descriptions_on_index_pages = false
  @parent_link_text = nil
  @output_dir = nil
end

Instance Attribute Details

#columns ⇒ Object (readonly)

Returns the value of attribute columns.



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# File 'lib/image_site/options.rb', line 8

def columns
  @columns
end

#descriptions_on_index_pages ⇒ Object (readonly)

Returns the value of attribute descriptions_on_index_pages.



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# File 'lib/image_site/options.rb', line 8

def descriptions_on_index_pages
  @descriptions_on_index_pages
end

#files ⇒ Object (readonly)

Returns the value of attribute files.



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# File 'lib/image_site/options.rb', line 8

def files
  @files
end

#output_dir ⇒ Object (readonly)

Returns the value of attribute output_dir.



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# File 'lib/image_site/options.rb', line 8

def output_dir
  @output_dir
end

#parent_link_text ⇒ Object (readonly)

Returns the value of attribute parent_link_text.



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# File 'lib/image_site/options.rb', line 8

def parent_link_text
  @parent_link_text
end

#rows ⇒ Object (readonly)

Returns the value of attribute rows.



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# File 'lib/image_site/options.rb', line 8

def rows
  @rows
end

#title ⇒ Object (readonly)

Returns the value of attribute title.



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# File 'lib/image_site/options.rb', line 8

def title
  @title
end

Instance Method Details

#abort_with_help(parser, message) ⇒ Object 



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# File 'lib/image_site/options.rb', line 67

def abort_with_help(parser, message)
  abort "#{message}\n#{parser}"
end

#parse! ⇒ Object 



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# File 'lib/image_site/options.rb', line 19

def parse!
  parser = OptionParser.new do |op|
    op.banner = "Usage: #{$PROGRAM_NAME} -t TITLE -o OUTPUT_DIR [other options] file [...]"

    op.on('-t TITLE', "Title of the set of images") do |title|
      @title = title
    end
    op.on('-c COLUMNS', "The number of columns of thumbnails on each index page (default #{DEFAULT_COLUMNS})") do |columns|
      @columns = columns.to_i
    end
    op.on('-r ROWS', "The number of rows of photos on each index page (default #{DEFAULT_ROWS})") do |rows|
      @rows = rows.to_i
    end
    op.on('-d', "Descriptions are included on index pages") do
      @descriptions_on_index_pages = true
    end
    op.on('-p PARENT_LINK_TEXT', "The text of the link to ../ on the last index page") do |parent_link_text|
      @parent_link_text = parent_link_text
    end
    op.on('-o OUTPUT_DIR', "Output directory") do |output_dir|
      @output_dir = output_dir
    end

    # -h and --help work by default, but implement them explicitly so they're
    # documented
    op.on("-h", "--help", "Prints this help") do
      warn op.to_s
      exit
    end

  end
  begin
    parser.parse!
  rescue OptionParser::ParseError
    abort parser.to_s
  end
  if !@title
    abort_with_help parser, "Please specify a title with -t."
  end
  if !@output_dir
    abort_with_help parser, "Please specify an output directory with -o."
  end
  if ARGV.empty?
    abort_with_help parser, "Please specify one or more image files."
  end
  @files = ARGV
end