Class: IsItJRuby

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

Overview

Utilities for determining if a Gem::Specification is JRuby ready. Based on isitjruby.com

Constant Summary collapse

VERSION =

This version of rubygems-isitjruby

'1.0'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(spec) ⇒ IsItJRuby

Downloads comments for spec from isitjruby.com



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# File 'lib/isitjruby.rb', line 29

def initialize(spec)
  @spec = spec

  url = URI.parse "http://isitjruby.com/#{@spec.name}/comments.json"

  json = Gem::RemoteFetcher.fetcher.fetch_path url
  comments = JSON.parse json

  comments.map! do |comment|
    begin
      comment['comment']['version'] =
        Gem::Version.new comment['comment']['version']
      comment['comment']
    rescue ArgumentError # bad data from isitjruby.com
      next
    end
  end

  comments.compact!

  @comments = comments.sort_by do |comment|
    works = comment['works_for_me'] ? 1 : 0
    [comment['version'], works, comment['name']]
  end.reverse
end

Instance Attribute Details

#comments ⇒ Object (readonly)

Comments for this gem



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# File 'lib/isitjruby.rb', line 19

def comments
  @comments
end

#spec ⇒ Object (readonly)

The gemspec



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# File 'lib/isitjruby.rb', line 24

def spec
  @spec
end

Instance Method Details

#jruby? ⇒ Boolean

Strict check for this version

Returns:

  • (Boolean) 


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# File 'lib/isitjruby.rb', line 58

def jruby?
  @comments.any? do |comment|
    comment['version'] == @spec.version and comment['works_for_me']
  end
end

#maybe_jruby? ⇒ Boolean

Returns a comment from the latest version that worked with JRuby

Returns:

  • (Boolean) 


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# File 'lib/isitjruby.rb', line 67

def maybe_jruby?
  @comments.first do |comment|
    comment['works_for_me']
  end
end

#percent(version = @spec.version) ⇒ Object

Returns a percentage of people saying version worked for them



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# File 'lib/isitjruby.rb', line 76

def percent(version = @spec.version)
  matching = @comments.select do |comment|
    comment['version'] == version
  end

  works = matching.select do |comment| comment['works_for_me'] end.length

  percent = (matching.length.to_f / works * 100)
  percent = 0   if percent.nan?
  percent = 100 if percent > 100

  "%2.0f%%" % percent
end

#url ⇒ Object

URL of this gem on isitjruby.com



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# File 'lib/isitjruby.rb', line 93

def url
  "http://isitjruby.com/#{spec.name}"
end