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.



15
16
17
18
 
# File 'lib/spidy/command_line.rb', line 15

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

Instance Method Details

#build(name) ⇒ Object 



61
62
63
64
 
# File 'lib/spidy/command_line.rb', line 61

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

#build_ruby ⇒ Object 



74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
 
# File 'lib/spidy/command_line.rb', line 74

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 



66
67
68
69
70
71
72
 
# File 'lib/spidy/command_line.rb', line 66

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

#call(name) ⇒ Object 



36
37
38
39
40
41
 
# File 'lib/spidy/command_line.rb', line 36

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 



28
29
30
31
32
33
34
 
# File 'lib/spidy/command_line.rb', line 28

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 



43
44
45
46
47
48
 
# File 'lib/spidy/command_line.rb', line 43

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 



20
21
22
23
24
25
26
 
# File 'lib/spidy/command_line.rb', line 20

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 



11
12
13
 
# File 'lib/spidy/command_line.rb', line 11

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

#function ⇒ Object 



50
51
52
53
54
55
56
57
58
59
 
# File 'lib/spidy/command_line.rb', line 50

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