Class: Plotty::Function

Inherits:
Struct
  • Object
show all
Defined in:
lib/plotty/graph.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#command ⇒ Object

Returns the value of attribute command

Returns:

  • (Object) —

    the current value of command



60
61
62
 
# File 'lib/plotty/graph.rb', line 60

def command
  @command
end

#pattern ⇒ Object

Returns the value of attribute pattern

Returns:

  • (Object) —

    the current value of pattern



60
61
62
 
# File 'lib/plotty/graph.rb', line 60

def pattern
  @pattern
end

#title ⇒ Object

Returns the value of attribute title

Returns:

  • (Object) —

    the current value of title



60
61
62
 
# File 'lib/plotty/graph.rb', line 60

def title
  @title
end

Class Method Details

.parse(pattern, command) ⇒ Object 



61
62
63
64
65
66
67
68
69
 
# File 'lib/plotty/graph.rb', line 61

def self.parse(pattern, command)
	pattern = Regexp.new(pattern, Regexp::MULTILINE)
	
	if command =~ /^(\w+):(.*?)$/
		self.new(pattern, $2, $1)
	else
		self.new(pattern, command, command)
	end
end

Instance Method Details

#call(value) ⇒ Object 



71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
 
# File 'lib/plotty/graph.rb', line 71

def call(value)
	r, w = IO.pipe
	
	$stderr.puts "Running #{self.command} with x = #{value}..."
	
	pid = Process.spawn({'x' => value.to_s}, self.command, out: w, err: STDERR)
	
	w.close
	
	buffer = r.read
	
	Process.waitpid pid
	
	if match = self.pattern.match(buffer)
		$stderr.puts "\tresult = #{match.inspect}"
		
		if match.captures.empty?
			return [match[0]]
		else
			return match.captures
		end
	end
end