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Created September 29, 2008 19:59
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.gitignore
*.iml
*.ipr
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gems.downloads.thor
require "rubygems"
require "thor"
module Gems
class Downloads < Thor
desc "list", "Print list of Gem downloads from rubyforge.org"
def list
require "rubygems"
require "open-uri"
require "hpricot"
print_gems_list
end
protected
def print_gems_list
rows = parse_rubyforge_gems_page
max_lengths = calculate_maximum_row_lengths(rows)
hr max_lengths
row rows[0], max_lengths
hr max_lengths
rows[1..-1].each do |row|
row(row, max_lengths)
end
hr max_lengths
end
def parse_rubyforge_gems_page
content = ""
open("http://gems.rubyforge.org/stats.html").each do |line|
content << line
end
doc = Hpricot(content)
rows = []
doc.search("table/tr").each do |row|
cells = row.search("/")
rows << [cells[0].at("/").inner_html.to_s, cells[1].inner_html.to_s]
end
rows
end
def calculate_maximum_row_lengths(rows)
max_lengths = [0, 0]
rows.inject(max_lengths) do |max_lengths, row|
max_lengths[0] = row[0].length if row[0].length > max_lengths[0]
max_lengths[1] = row[1].length if row[1].length > max_lengths[1]
max_lengths
end
max_lengths
end
def hr(max_lengths)
out.puts '-' * (max_lengths[0] + max_lengths[1] + 7)
end
def row(row, max_lengths)
out.printf("| %#{max_lengths[0]}s | %#{max_lengths[1]}s |", row[0], row[1])
out.puts
end
def out
$stdout
end
end
end
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gems.downloads_spec.rb
require File.expand_path("#{File.dirname(__FILE__)}/gems_downloads_spec_helper")
module Gems
describe Downloads do
describe "#list" do
attr_reader :downloads, :out
before do
@downloads = Downloads.new
@out = out = StringIO.new("")
stub(downloads).out {out}
end
it "reformats the gem stat list from http://gems.rubyforge.org/stats.html into a console-friendly view" do
html = (<<-HTML).strip.gsub(/^ /, "")
<html><head><title>Gem download stats</title></head><body><h3>Generated Mon Sep 29 04:40:26 -0400 2008; 29618468 RubyGem downloads to date</h3><table><tr><th>Gem</th><th>Downloads</th></tr><tr><td><a name="rails">rails</a></td><td>2170030</td></tr>
<tr><td><a name="activerecord">activerecord</a></td><td>2139380</td></tr>
<tr><td><a name="activesupport">activesupport</a></td><td>2069193</td></tr>
<tr><td><a name="actionpack">actionpack</a></td><td>2045547</td></tr>
<tr><td><a name="actionmailer">actionmailer</a></td><td>1896488</td></tr>
<tr><td><a name="rake">rake</a></td><td>1597441</td></tr>
<tr><td><a name="actionwebservice">actionwebservice</a></td><td>1339385</td></tr>
<tr><td><a name="mysql">mysql</a></td><td>844519</td></tr>
<tr><td><a name="mongrel">mongrel</a></td><td>622147</td></tr>
<tr><td><a name="activeresource">activeresource</a></td><td>561454</td></tr>
<tr><td><a name="daemons">daemons</a></td><td>457133</td></tr>
</body></html>
HTML
mock(downloads).open("http://gems.rubyforge.org/stats.html") {html}
downloads.list
out.string.should == (<<-OUT).gsub(/^ /, "")
--------------------------------
| | Downloads |
--------------------------------
| rails | 2170030 |
| activerecord | 2139380 |
| activesupport | 2069193 |
| actionpack | 2045547 |
| actionmailer | 1896488 |
| rake | 1597441 |
| actionwebservice | 1339385 |
| mysql | 844519 |
| mongrel | 622147 |
| activeresource | 561454 |
| daemons | 457133 |
--------------------------------
OUT
end
end
end
end
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gems_downloads_spec_helper.rb
require "rubygems"
require "spec"
require "rr"
dir = File.dirname(__FILE__)
$LOAD_PATH.unshift(File.expand_path("#{dir}/../lib"))
load File.expand_path("#{dir}/../lib/gems.downloads.thor")
Spec::Runner.configure do |config|
config.mock_with RR::Adapters::Rspec
end
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