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.



25
26
27
28
 
# File 'lib/spidy/command_line.rb', line 25

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

Instance Method Details

#build(name) ⇒ Object 



71
72
73
74
 
# File 'lib/spidy/command_line.rb', line 71

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

#build_ruby ⇒ Object 



84
85
86
87
88
89
90
91
92
93
94
95
96
97
 
# File 'lib/spidy/command_line.rb', line 84

def build_ruby
  "    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 



76
77
78
79
80
81
82
 
# File 'lib/spidy/command_line.rb', line 76

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

#call(name) ⇒ Object 



46
47
48
49
50
51
 
# File 'lib/spidy/command_line.rb', line 46

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 



38
39
40
41
42
43
44
 
# File 'lib/spidy/command_line.rb', line 38

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 



53
54
55
56
57
58
 
# File 'lib/spidy/command_line.rb', line 53

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 



30
31
32
33
34
35
36
 
# File 'lib/spidy/command_line.rb', line 30

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 



21
22
23
 
# File 'lib/spidy/command_line.rb', line 21

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

#function ⇒ Object 



60
61
62
63
64
65
66
67
68
69
 
# File 'lib/spidy/command_line.rb', line 60

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"