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.



17
18
19
20
 
# 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 



63
64
65
66
 
# 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 



76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
 
# File 'lib/spidy/command_line.rb', line 76

def build_ruby
  <<~RUBY
    # frozen_string_literal: true

    Spidy.define do
      spider(as: :html) do |yielder, connector|
        # connector.call(url) do |resource|
        #   yielder.call(url or resource)
        # end
      end

      define(as: :html) do
      end
    end
  RUBY
end

#build_shell(name) ⇒ Object 



68
69
70
71
72
73
74
 
# File 'lib/spidy/command_line.rb', line 68

def build_shell(name)
  <<~SHELL
    #!/bin/bash
    eval "$(spidy $(dirname "${0}")/#{name}.rb shell)"
    spider
  SHELL
end

#call(name) ⇒ Object 



38
39
40
41
42
43
 
# 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 



30
31
32
33
34
35
36
 
# 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 



45
46
47
48
49
50
 
# 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 



22
23
24
25
26
27
28
 
# 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 



13
14
15
 
# File 'lib/spidy/command_line.rb', line 13

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

#function ⇒ Object 



52
53
54
55
56
57
58
59
60
61
 
# File 'lib/spidy/command_line.rb', line 52

def function
  print <<~SHELL
    function spider() {
      spidy spider #{definition_file.path} $1
    }
    function scraper() {
      spidy call #{definition_file.path} $1
    }
  SHELL
end