Class: Teepee::Commander

Inherits:
Object
  • Object
show all
Defined in:
lib/teepee/commander.rb

Direct Known Subclasses

ActionableCommander

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(params) ⇒ Commander

Returns a new instance of Commander.



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# File 'lib/teepee/commander.rb', line 42

def initialize params
  # We don't use the params in the base class, but might in derived classes.
end

Instance Attribute Details

#parser ⇒ Object

Returns the value of attribute parser.



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# File 'lib/teepee/commander.rb', line 40

def parser
  @parser
end

Instance Method Details

#%(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 201

def % numbers
  to_numbers(numbers).inject { |base, percent| base*percent/100.0 }
end

#*(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 184

def * numbers
  ensure_numeric to_numbers(numbers).inject 1, :*
end

#**(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 197

def ** numbers
  ensure_numeric to_numbers(numbers).reduce :**
end

#+(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 171

def + numbers
  ensure_numeric to_numbers(numbers).inject 0, :+
end

#-(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 175

def - numbers
  numbers = to_numbers numbers
  if numbers.length == 1
    ensure_numeric -numbers.first
  else
    ensure_numeric numbers.reduce :-
  end
end

#/(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 188

def / numbers
  numbers = to_numbers numbers
  if numbers.length == 1
    ensure_numeric 1 / numbers.first
  else
    ensure_numeric numbers.reduce :/
  end
end

#acos(angle) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 217

def acos angle
  ensure_numeric Math.acos angle.to_number
end

#acosh(angle) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 221

def acosh angle
  ensure_numeric Math.acosh angle.to_number
end

#add_percentage(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 205

def add_percentage numbers
  to_numbers(numbers).inject {|base, percent| base * (1+percent/100.0) }
end

#asin(angle) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 225

def asin angle
  ensure_numeric Math.asin angle.to_number
end

#asinh(angle) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 229

def asinh angle
  ensure_numeric Math.asinh angle.to_number
end

#atan(angle) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 233

def atan angle
  ensure_numeric Math.atan angle.to_number
end

#atanh(angle) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 237

def atanh angle
  ensure_numeric Math.atanh angle.to_number
end

#b(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 241

def b expressions
  html_tag :b, expressions
end

#backquote ⇒ Object 



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# File 'lib/teepee/commander.rb', line 245

def backquote
  "`"
end

#backslash ⇒ Object 



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# File 'lib/teepee/commander.rb', line 249

def backslash
  "\\"
end

#big(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 253

def big expressions
  html_tag :big, expressions
end

#bookmarks_folder_id(id) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 257

def bookmarks_folder_id id
  id_command_handler id, :Folder, "folder", "folders", "folders/bookmarks_inline", "bookmarks"
end

#boolean_and(booleans) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 261

def boolean_and booleans
  if booleans.empty?
    true_constant
  elsif false_constant? booleans.first
    false_constant
  elsif true_constant? booleans.first or booleans.first.kind_of? WhitespaceToken
    boolean_and booleans[1..-1]
  else
    command_error "Not a boolean value #{booleans.first}"
  end
end

#boolean_nand(booleans) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 273

def boolean_nand booleans
  boolean_not boolean_and booleans
end

#boolean_nor(booleans) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 277

def boolean_nor booleans
  boolean_not boolean_or booleans
end

#boolean_not(boolean) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 281

def boolean_not boolean
  if true_constant? boolean
    false_constant
  elsif false_constant? boolean
    true_constant
  else
    command_error "Not a boolean value"
  end
end

#boolean_or(booleans) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 291

def boolean_or booleans
  if booleans.empty?
    false_constant
  elsif true_constant? booleans.first
    true_constant
  elsif false_constant? booleans.first or booleans.first.kind_of? WhitespaceToken
    boolean_or booleans[1..-1]
  else
    command_error "Not a boolean value"
  end
end

#boolean_xnor(booleans) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 303

def boolean_xnor booleans
  boolean_not boolean_xor booleans
end

#boolean_xor(booleans) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 307

def boolean_xor booleans
  # There are two schools of thought as to what a multi-variable XOR is.
  # 1. Chained XORs, giving a parity check.
  # 2. 'Exclusively' one true for ALL inputs.
  # I'm going with the second: one and only one true, the rest false.
  # It seems therefore that the zero-argument version should be false then.
  if booleans.empty?
    false_constant
  else
    any_trues = false
    booleans.each do |boolean|
      if true_constant? boolean
        if any_trues
          return false_constant
        else
          any_trues = true
        end
      elsif false_constant? boolean
        # do nothing
      elsif boolean.kind_of? WhitespaceToken
        # do nothing
      else
        return command_error "Not a boolean value"
      end
    end
    return any_trues.to_s
  end
end

#br ⇒ Object 



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# File 'lib/teepee/commander.rb', line 336

def br
  html_tag :br, nil
end

#case_operator(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 340

def case_operator expressions
  value, _, *rest = strip expressions
  if value and not rest.empty?
    def cond_helper value, expressions
      test_value, _, form, *rest = strip expressions
      if equal [value, test_value]
        form
      elsif not rest.empty?
        cond_helper value, rest
      end
    end
    cond_helper value, rest
  end
end

#ceiling(number) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 355

def ceiling number
  ensure_numeric number.to_number.ceil
end

#command_error(message) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 52

def command_error message
  %{<span style="color: red">[#{message}]</span>}
end

#command_not_yet_implemented(command) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 56

def command_not_yet_implemented command
  command_error "The command #{command} is not yet implemented."
end

#comment(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 359

def comment expressions
  nil
end

#cond_operator(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 363

def cond_operator expressions
  conditional, _, form, *rest = strip expressions
  if true_constant? conditional
    form
  elsif not rest.empty?
    cond_operator rest
  end
end

#cos(angle) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 372

def cos angle
  ensure_numeric Math.cos angle.to_number
end

#cosh(angle) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 376

def cosh angle
  ensure_numeric Math.cosh angle.to_number
end

#define(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 380

def define expressions
  variable, _, value = expressions
  k = variable.to_html
  v = value.to_html
  @parser.variables[k] = v
  get_operator k
end

#defined?(variables) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/teepee/commander.rb', line 388

def defined? variables
  if Set.new(variables.map(&:to_html)).subset? Set.new(@parser.variables.keys)
    true_constant
  else
    false_constant
  end
end

#degrees2radians(degrees) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 396

def degrees2radians degrees
  ensure_numeric degrees.to_number * Math::PI / 180.0
end

#del(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 400

def del expressions
  html_tag :del, expressions
end

#dollar ⇒ Object 



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# File 'lib/teepee/commander.rb', line 404

def dollar
  "$"
end

#dotimes(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 408

def dotimes expressions
  n = expressions.first.to_number
  return "" if n.nil? or n < 1
  span_operator expressions[1..-1] * n
end

#e ⇒ Object 



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# File 'lib/teepee/commander.rb', line 414

def e
  Math::E
end

#ensure_boolean(boolean) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 74

def ensure_boolean boolean
  if boolean.to_s == "true" or boolean.to_s == "false"
    boolean
  else
    command_error "Non-boolean value."
  end
end

#ensure_numeric(number) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 64

def ensure_numeric number
  if number.kind_of? Complex
    command_error "Complex numbers are not yet supported."
  elsif not number.kind_of? Numeric
    command_error "Non-numeric result."
  else
    number
  end
end

#enumerate(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 428

def enumerate expressions
  html_tag :ol, expressions
end

#enumerate_lowercase(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 440

def enumerate_lowercase expressions
  html_tag :ol, expressions, {type: "a"}
end

#enumerate_numeric(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 432

def enumerate_numeric expressions
  html_tag :ol, expressions, {type: "1"}
end

#enumerate_roman_lowercase(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 448

def enumerate_roman_lowercase expressions
  html_tag :ol, expressions, {type: "i"}
end

#enumerate_roman_uppercase(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 444

def enumerate_roman_uppercase expressions
  html_tag :ol, expressions, {type: "I"}
end

#enumerate_uppercase(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 436

def enumerate_uppercase expressions
  html_tag :ol, expressions, {type: "A"}
end

#equal(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 418

def equal expressions
  if expressions.empty?
    true_constant
  elsif expressions.length == 1
    true_constant
  else
    expressions[0].to_s == expressions[1].to_s and equal expressions.rest
  end
end

#erf(number) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 452

def erf number
  ensure_numeric Math.erf number.to_number
end

#erfc(number) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 456

def erfc number
  ensure_numeric Math.erfc number.to_number
end

#false_constant ⇒ Object 



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# File 'lib/teepee/commander.rb', line 460

def false_constant
  "false"
end

#false_constant?(expression) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/teepee/commander.rb', line 149

def false_constant? expression
  expression.to_s == "false"
end

#floor(number) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 464

def floor number
  ensure_numeric number.to_number.floor
end

#folder_id(id) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 468

def folder_id id
  id_command_handler id, :Folder
end

#forum_id(id) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 472

def forum_id id
  id_command_handler id, :Forum
end

#gamma(number) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 476

def gamma number
  ensure_numeric Math.gamma number.to_number
end

#get_operator(variable) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 480

def get_operator variable
  @parser.variables[variable.to_html].to_html
end

#greater_than(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 484

def greater_than numbers
  if numbers.empty?
    true_constant
  elsif numbers.length == 1
    true_constant
  else
    numbers[0].to_number > numbers[1].to_number and greater_than numbers.rest
  end
end

#greater_than_or_equal(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 494

def greater_than_or_equal numbers
  if numbers.empty?
    true_constant
  elsif numbers.length == 1
    true_constant
  else
    numbers[0].to_number >= numbers[1].to_number and greater_than_or_equal numbers.rest
  end
end

#h1(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 504

def h1 expressions
  html_tag :h1, expressions
end

#h2(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 508

def h2 expressions
  html_tag :h2, expressions
end

#h3(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 512

def h3 expressions
  html_tag :h3, expressions
end

#h4(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 516

def h4 expressions
  html_tag :h4, expressions
end

#h5(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 520

def h5 expressions
  html_tag :h5, expressions
end

#h6(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 524

def h6 expressions
  html_tag :h6, expressions
end

#html_tag(tag, expressions, attribs = nil) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 82

def html_tag tag, expressions, attribs=nil
  opening_tag = if attribs
                  attribs_string = attribs.map {|k,v| %{#{k}="#{v}"}}.join " "
                  if expressions.nil?
                    "<#{tag} #{attribs_string}/>"
                  else
                    "<#{tag} #{attribs_string}>"
                  end
                else
                  if expressions.nil?
                    "<#{tag}/>"
                  else
                    "<#{tag}>"
                  end
                end
  if expressions.nil?
    opening_tag
  else
    opening_tag + expressions.map(&:to_html).join.strip + "</#{tag}>"
  end
end

#hypot(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 585

def hypot numbers
  ensure_numeric Math.sqrt to_numbers(numbers).map {|n| n**2}
end

#i ⇒ Object 



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# File 'lib/teepee/commander.rb', line 528

def i
  command_error "Complex numbers are not yet supported."
end

#id_command_handler(id, klass, singular = klass.to_s.camelcase_to_snakecase, plural = singular.pluralize, partial = "#{plural}/inline", view = "") ⇒ Object 



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# File 'lib/teepee/commander.rb', line 108

def id_command_handler(id,
                       klass,
                       singular = klass.to_s.camelcase_to_snakecase,
                       plural = singular.pluralize,
                       partial = "#{plural}/inline",
                       view="")
  if not id
    command_error "#{singular}_id: error: no #{singular} ID specified"
  elsif not id.to_s =~ /\A[0-9]+\z/
    command_error "#{singular}_id: error: invalid #{singular} ID specified"
  else
    tb_href "#{plural}/#{id.to_s}/#{view}", "#{klass.to_s} ##{id.to_s}"
  end
end

#if_operator(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 532

def if_operator expressions
  expressions = strip expressions
  conditional, _, true_clause, _, false_clause = expressions
  if true_constant? conditional
    true_clause.to_html
  elsif false_clause
    false_clause.to_html
  end
end

#image(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 542

def image expressions
  expressions = strip expressions
  uri, *alt_text = expressions
  uri = ERB::Util.html_escape uri.to_s
  if not valid_uri? uri
    command_error "Not a valid URI for the image."
  else
    if alt_text.empty?
      html_tag :img, nil, {src: uri}
    else
      html_tag :img, nil, {src: uri, alt: alt_text.map(&:to_s).join.strip}
    end
  end
end

#it(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 557

def it expressions
  html_tag :i, expressions
end

#item(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 561

def item expressions
  html_tag :li, expressions
end

#itemize(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 565

def itemize expressions
  html_tag :ul, expressions
end

#itemize_circle(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 573

def itemize_circle expressions
  html_tag :ul, expressions, {style: "list-style-type:circle"}
end

#itemize_disc(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 569

def itemize_disc expressions
  html_tag :ul, expressions, {style: "list-style-type:disc"}
end

#itemize_none(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 581

def itemize_none expressions
  html_tag :ul, expressions, {style: "list-style-type:none"}
end

#itemize_square(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 577

def itemize_square expressions
  html_tag :ul, expressions, {style: "list-style-type:square"}
end

#keyword_id(id) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 589

def keyword_id id
  id_command_handler id, :Keyword
end

#ld(number) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 593

def ld number
  ensure_numeric Math.log2 number.to_number
end

#ldexp(fraction, exponent) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 597

def ldexp fraction, exponent
  ensure_numeric Math.ldexp fraction.to_number, exponent.to_number
end

#left_brace ⇒ Object 



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# File 'lib/teepee/commander.rb', line 601

def left_brace
  "{"
end

#left_bracket ⇒ Object 



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# File 'lib/teepee/commander.rb', line 605

def left_bracket
  "["
end

#left_strip(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 123

def left_strip expressions
  while expressions.first.kind_of? WhitespaceToken
    expressions.shift
  end
  expressions
end

#less_than(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 609

def less_than numbers
  if numbers.empty?
    true_constant
  elsif numbers.length == 1
    true_constant
  else
    numbers[0].to_number < numbers[1].to_number and less_than numbers.rest
  end
end

#less_than_or_equal(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 619

def less_than_or_equal numbers
  if numbers.empty?
    true_constant
  elsif numbers.length == 1
    true_constant
  else
    numbers[0].to_number <= numbers[1].to_number and less_than_or_equal numbers.rest
  end
end

#lgamma(number) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 629

def lgamma number
  ensure_numeric Math::lgamma(number.to_number).first
end

#link(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 633

def link expressions
  expressions = strip expressions
  uri, *desc = expressions
  uri = ERB::Util.html_escape uri.to_s
  if not valid_uri? uri
    command_error "Not a valid URI."
  else
    desc = [uri] if desc.empty?
    html_tag :a, desc, {href: uri}
  end
end

#link_id(id) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 645

def link_id id
  id_command_handler id, :Link
end

#ln(number) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 649

def ln number
  ensure_numeric Math.log number.to_number
end

#log(base, number) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 653

def log base, number
  if number.nil?
    number, base = base, number
    ensure_numeric Math.log10 number.to_number # default to log base 10
  else
    ensure_numeric Math.log number.to_number, base.to_number
  end
end

#log10(number) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 662

def log10 number
  ensure_numeric Math.log10 number.to_number
end

#mailto(email_address) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 666

def mailto email_address
  email_address = email_address.to_s
  if valid_email_address? email_address
    html_tag :a, [email_address], {href: "mailto:#{email_address}"}
  else
    command_error "I'm not sure that's a valid email address."
  end
end

#mod(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 675

def mod numbers
  ensure_numeric to_numbers(numbers).reduce :%
end

#nbsp(count) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 679

def nbsp count
  if count and count.to_number and count.to_number > 0
    "&nbsp;" * count.to_number
  else
    "&nbsp;"
  end
end

#not_equal(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 687

def not_equal numbers
  if numbers.empty?
    true_constant
  elsif numbers.length == 1
    true_constant
  else
    numbers[0].to_number != numbers[1].to_number and equal numbers.rest
  end
end

#note_id(id) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 697

def note_id id
  id_command_handler id, :Note
end

#number_from_word(word) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 157

def number_from_word word
  begin
    word.to_number
  rescue ArgumentError, NoMethodError
    nil
  end
end

#numeric?(*numbers) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/teepee/commander.rb', line 60

def numeric? *numbers
  numbers.all? {|number| number.kind_of? Numeric}
end

#percent_total(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 213

def percent_total numbers
  to_numbers(numbers).inject {|total, part| Float(part)/Float(total)*100.0 }
end

#pi ⇒ Object 



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# File 'lib/teepee/commander.rb', line 701

def pi
  Math::PI
end

#pipe ⇒ Object 



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# File 'lib/teepee/commander.rb', line 705

def pipe
  "|"
end

#pipe?(expression) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/teepee/commander.rb', line 153

def pipe? expression
  expression.is_a? PipeToken
end

#prog1_operator(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 709

def prog1_operator expressions
  expressions.map(&:to_html).first
end

#progn_operator(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 713

def progn_operator expressions
  expressions.map(&:to_html).last
end

#prognil(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 717

def prognil expressions
  expressions.map(&:to_html)
  ""
end

#radians2degrees(radians) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 722

def radians2degrees radians
  ensure_numeric(radians.to_number * 180.0 / Math::PI)
end

#right_brace ⇒ Object 



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# File 'lib/teepee/commander.rb', line 726

def right_brace
  "}"
end

#right_bracket ⇒ Object 



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# File 'lib/teepee/commander.rb', line 730

def right_bracket
  "]"
end

#right_strip(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 130

def right_strip expressions
  while expressions.last.kind_of? WhitespaceToken
    expressions.pop
  end
  expressions
end

#round(number, precision = nil, *_) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 734

def round number, precision = nil, *_
  if precision.nil? or precision.to_number.nil?
    ensure_numeric number.to_number.round
  else
    ensure_numeric number.to_number.round precision.to_number
  end
end

#sin(angle) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 742

def sin angle
  ensure_numeric Math.sin angle.to_number
end

#sinh(angle) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 746

def sinh angle
  ensure_numeric Math.sinh angle.to_number
end

#small(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 750

def small expressions
  html_tag :small, expressions
end

#space ⇒ Object 



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# File 'lib/teepee/commander.rb', line 762

def space
  " "
end

#span_operator(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 766

def span_operator expressions
  html_tag :span, expressions
end

#sqrt(number) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 758

def sqrt number
  ensure_numeric Math.sqrt number.to_number
end

#squiggle ⇒ Object 



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# File 'lib/teepee/commander.rb', line 754

def squiggle
  "~"
end

#strip(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 137

def strip expressions
  left_strip right_strip expressions
end

#sub(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 770

def sub expressions
  html_tag :sub, expressions
end

#subtract_percentage(numbers) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 209

def subtract_percentage numbers
  to_numbers(numbers).inject {|base, percent| base * (1-percent/100.0) }
end

#sup(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 774

def sup expressions
  html_tag :sup, expressions
end

#table(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 778

def table expressions
  html_tag :table, expressions
end

#table_data(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 782

def table_data expressions
  html_tag :td, expressions
end

#table_header(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 786

def table_header expressions
  html_tag :th, expressions
end

#table_row(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 790

def table_row expressions
  html_tag :tr, expressions
end

#tag_id(id) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 794

def tag_id id
  id_command_handler id, :Tag
end

#tan(angle) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 798

def tan angle
  ensure_numeric Math.tan angle.to_number
end

#tanh(angle) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 802

def tanh angle
  ensure_numeric Math.tanh angle.to_number
end

#tb_href(target, string) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 104

def tb_href target, string
  %{<a href="#{TB_COM}/#{target}">#{string}</a>}
end

#to_numbers(words) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 165

def to_numbers words
  words.map {|word| number_from_word word}.reject &:nil?
end

#true_constant ⇒ Object 



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# File 'lib/teepee/commander.rb', line 806

def true_constant
  "true"
end

#true_constant?(expression) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/teepee/commander.rb', line 145

def true_constant? expression
  expression.to_s == "true"
end

#tt(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 810

def tt expressions
  html_tag :tt, expressions
end

#u(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 814

def u expressions
  html_tag :u, expressions
end

#undefine(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 818

def undefine expressions
  expressions.each do |expression|
    @parser.variables.delete expression.to_html
  end
  ""
end

#unless_operator(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 825

def unless_operator expressions
  expressions = strip expressions
  conditional = expressions.first
  expressions = strip expressions.rest
  if false_constant? conditional
    if expressions.length <= 1
      expressions.first
    else
      span_operator expressions
    end
  end
end

#user(user) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 838

def user user
  if not user
    command_error "user: error: no user specified"
  else
    tb_href "users/#{user}", user.to_s
  end
end

#valid_email_address?(email_address) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/teepee/commander.rb', line 141

def valid_email_address? email_address
  email_address =~ /\A[[:graph:]]+@[\w.]+\z/
end

#valid_uri?(uri) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/teepee/commander.rb', line 46

def valid_uri? uri
  (!! (u = URI.parse(uri))) and not u.scheme.nil?
rescue URI::InvalidURIError
  false
end

#when_operator(expressions) ⇒ Object 



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# File 'lib/teepee/commander.rb', line 846

def when_operator expressions
  expressions = strip expressions
  conditional = expressions.first
  expressions = strip expressions.rest
  if true_constant? conditional
    if expressions.length <= 1
      expressions.first
    else
      span_operator expressions
    end
  end
end