Class: Spidy::CommandLine

Inherits:
Object
  • Object
show all
Defined in:
lib/spidy/command_line.rb

Overview

spidy shell interface

Instance Method Summary collapse

Constructor Details

#initialize(definition_file) ⇒ CommandLine

Returns a new instance of CommandLine.



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# File 'lib/spidy/command_line.rb', line 17

def initialize(definition_file)
  @definition_file = definition_file
  fail 'unloaded spidy' if definition_file.spidy.nil?
end

Instance Method Details

#build(name) ⇒ Object 



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# File 'lib/spidy/command_line.rb', line 63

def build(name)
  File.write("#{name}.sh", build_shell_script(name))
  File.write("#{name}.rb", build_ruby_script)
end

#build_ruby ⇒ Object 



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# File 'lib/spidy/command_line.rb', line 76

def build_ruby
  "    # frozen_string_literal: true\n\n    Spidy.define do\n      spider(as: :html) do |yielder, connector|\n        # connector.call(url) do |resource|\n        #   yielder.call(url or resource)\n        # end\n      end\n\n      define(as: :html) do\n      end\n    end\n  RUBY\nend\n"

#build_shell(name) ⇒ Object 



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# File 'lib/spidy/command_line.rb', line 68

def build_shell(name)
  "    #!/bin/bash\n    eval \"$(spidy $(dirname \"${0}\")/\#{name}.rb shell)\"\n    spider\n  SHELL\nend\n"

#call(name) ⇒ Object 



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# File 'lib/spidy/command_line.rb', line 38

def call(name)
  return call_stdin_lines(name) if FileTest.pipe?($stdin)
  spidy.call(name: name, &output) unless FileTest.pipe?($stdin)
rescue StandardError => e
  error_handler.call(e, nil)
end

#call_stdin_lines(name) ⇒ Object 



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# File 'lib/spidy/command_line.rb', line 30

def call_stdin_lines(name)
  $stdin.each_line do |url|
    spidy.call(url.strip, name: name, &output)
  rescue StandardError => e
    error_handler.call(e, url)
  end
end

#each(name) ⇒ Object 



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# File 'lib/spidy/command_line.rb', line 45

def each(name)
  return each_stdin_lines(name) if FileTest.pipe?($stdin)
  spidy.each(name: name, &output)
rescue StandardError => e
  error_handler.call(e, nil)
end

#each_stdin_lines(name) ⇒ Object 



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# File 'lib/spidy/command_line.rb', line 22

def each_stdin_lines(name)
  $stdin.each_line do |url|
    spidy.each(url.strip, name: name, &output)
  rescue StandardError => e
    error_handler.call(e, url)
  end
end

#eval_call(script) ⇒ Object 



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# File 'lib/spidy/command_line.rb', line 13

def eval_call(script)
  @definition_file.spidy.instance_eval(script)
end

#function ⇒ Object 



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# File 'lib/spidy/command_line.rb', line 52

def function
  print "    function spider() {\n      spidy spider \#{definition_file.path} $1\n    }\n    function scraper() {\n      spidy call \#{definition_file.path} $1\n    }\n  SHELL\nend\n"